Industry vertical

Tax & Compliance Software

Tax determination and filing — sales tax and VAT calculation, e-invoicing and clearance regimes, crypto and information reporting, and the tax authorities' own APIs.

175 providers 1047 APIs 3 enterprise adopters

Tax & Compliance Software on the APIs.io network indexes 175 providers publishing 1047 APIs across this industry vertical.

Notable providers include Avalara, FlowAccount, Wingspan, QuickBooks, ZenLedger, Thomson Reuters, and 169 more — each profile links out to that provider’s APIs, schemas, and governance artifacts.

Related industries: Accounting & Finance Operations, Professional Services, Human Resources & Payroll, and Financial Technology. Browse every industry vertical at industries.apis.io.

About this industry

Tax determination and filing — sales tax and VAT calculation, e-invoicing and clearance regimes, crypto and information reporting, and the tax authorities’ own APIs. Membership is computed from every provider in the catalog whose tags match this vertical — 175 at the last build — rather than from a fixed list. API Evangelist research additionally tracks 1 sub-sector within it: General.

Market demand

Providers above are the supply side. This is the demand side — enterprises adopting API & AI technology in this vertical, drawn from APIs.io Insights. Names and maturity are enterprise-scoped; they don't overlap with the provider catalog.

3enterprises adopting

#6 / 50adoption maturity rank

Statefulnessstrongest layer

Customization & Adaptationweakest layer

Leading adopters

EY233Intuit196KPMG51

AI & API adoption maturity

Mean adoption intensity across the enterprises above, by capability layer — how this vertical is maturing, from foundational models through governance and FinOps.

Statefulness

78.0

Economics & Sustainability

71.9

Foundational Layer

68.3

Retrieval & Grounding

51.8

Governance & Risk

49.4

Efficiency & Specialization

45.1

Measurement & Accountability

40.3

Productivity

38.7

Integration & Interoperability

30.2

Customization & Adaptation

19.5

Demand data: APIs.io Insights, enterprise API & AI adoption read from job postings. These figures predate the Q3 2026 read and are being rebuilt on it.

Providers (175)

Provider	Description	APIs	Rating
Avalara	Avalara helps businesses of all sizes get tax compliance right. We deliver cloud-based solutions that work with existing business applications to calculate tax accurately and fi...	73	exemplar
FlowAccount	FlowAccount is a Thai cloud accounting platform serving 130,000+ SMEs, 17,000+ accountants and admins, and 5,900+ accounting firms. Its products cover online accounting (quotati...	19	exemplar
Wingspan	Wingspan is a contractor payments and payroll platform built for the independent workforce, giving enterprises a single system to onboard 1099 contractors, collect W-9 and compl...	15	exemplar
QuickBooks	QuickBooks is Intuit's accounting software platform for small businesses, self-employed, and accountants, available as QuickBooks Online (cloud) and QuickBooks Desktop. The Quic...	82	strong
ZenLedger	ZenLedger is a Seattle-founded crypto tax and digital-asset accounting company whose platform ingests transactions from 400+ exchanges, 100+ DeFi protocols and 10+ NFT marketpla...	13	strong
Thomson Reuters	Thomson Reuters provides over 137 APIs across legal, tax and accounting, risk and fraud, and trade and supply industries through their global developer portal. APIs cover Westla...	324	strong
Intuit	Collection of APIs offered by Intuit for financial and business management services.	11	strong
flatin.pt	Portuguese property-tax APIs providing keyless access to IMI rates for all 308 municipalities and IMT/stamp duty purchase-cost calculations, sourced from official Autoridade Tri...	1	strong
OptionsAhoy	AlphaLatitude Inc. is a Sunnyvale, California C-corporation (founded March 2026) that builds OptionsAhoy, an equity-compensation optimization product for individual investors: m...	11	developing
UniRate API	The UniRate API provides current foreign-exchange rates, currency conversion, a list of supported currencies, and country VAT rates over a simple REST interface. Current-rate en...	4	developing
africacompliancedata-com	Africa Compliance Data provides a public API and dataset covering holidays, business days, VAT rates, withholding tax, tax identification formats, filing deadlines, payroll tax ...	6	developing
Contalink	Contalink is a Mexican cloud accounting and payroll platform ("contabilidad en la nube") built for independent accountants, accounting firms (despachos) and SMEs. It automates r...	8	developing
Anrok	Anrok is a SaaS-focused global sales tax and VAT compliance platform built for modern commerce. It provides a REST API that enables software companies to calculate sales tax in ...	8	developing
Cadana	Cadana is a white-label global payment and payroll infrastructure provider for talent platforms, staffing companies, and HR providers. Its APIs let partners onboard and pay empl...	30	developing
cryptotaxedge-com	CryptoTaxEdge provides a digital-asset tax classification API that transforms on-chain transaction data into tax-ready categories and treatments. It offers an AI-driven classifi...	1	developing
TaxJar	TaxJar is a sales tax automation platform, now a Stripe company, providing APIs for real-time sales tax calculations, rooftop-level rate lookups, transaction recording, and auto...	9	developing
MileIQ	MileIQ is an automatic mileage-tracking service for individuals and teams that logs every drive in the background, classifies each trip as business or personal, and calculates t...	2	developing
inFakt	inFakt is a Polish fintech platform that combines invoicing software, online accounting, and dedicated bookkeeper services for sole proprietors (JDG), limited-liability companie...	1	developing
Swap	Swap (Swap Commerce, Inc.) is an agentic commerce platform that helps merchants sell, ship, and scale globally, powering 700+ brands across AI-led product discovery, cross-borde...	6	developing
Conecta Media LLC	Arkrel, a product of Conecta Media LLC, provides a SaaS solution that turns a year of bank and credit card statements into a tax-ready report for self-employed individuals, free...	18	developing
Zoho Books	Zoho Books is online accounting software for small and growing businesses that handles invoicing, expenses, banking, projects, inventory, vendor bills, reporting, and end-to-end...	4	developing
TaxBit	TaxBit is an end-to-end tax compliance and information-reporting platform for the digital economy, serving enterprises and governments across 70+ jurisdictions and 140+ countrie...	1	developing
Storecove	Storecove provides e-invoicing software and a global compliance API. A single API connection gives businesses and ERP providers access to the Peppol network and to other e-invoi...	11	developing
Aibidia	Aibidia is a Helsinki-based transfer pricing technology company whose cloud platform lets multinational enterprises manage transfer pricing policy, intercompany transaction data...	6	developing
Reach	Reach is the premier partner for ambitious, forward‑thinking online brands that want to connect with consumers around the world. Using its unique, local service provider model, ...	6	developing
Vayana Network	Vayana (legal entity Vay Network Services Pvt. Ltd., founded 2016, headquartered in Pune, India) operates India's trade credit infrastructure network, connecting buyers, sellers...	6	developing
0s and 1s	0s and 1s provides free CIS (Construction Industry Scheme) software for UK contractors, offering tools to verify subcontractors, record payments, file CIS300 returns, send state...	1	developing
Column Tax	Column Tax is an IRS-authorized, API-first tax filing platform that lets banks, brokerages, neobanks, and SMB/freelancer fintech apps embed a full white-label income-tax prepara...	1	developing
AI2Fin	Track and categorise transactions, find tax deductions and estimate what you owe with 2Fin. Intelligent money tools in every country. Start free today. 2Fin is a tax and money a...	17	developing
HMRC UK Tax Authority	HM Revenue and Customs (HMRC) provides over 115 APIs through the HMRC Developer Hub for UK tax compliance including Making Tax Digital for VAT and Income Tax, PAYE, customs decl...	8	developing
stackin-io	Stackin provides a Brazilian fiscal API platform that enables developers to issue electronic invoices (NF-e) and service invoices (NFS-e) via a simple REST interface. The servic...	1	developing
Workday Payroll	Workday Payroll provides comprehensive APIs for managing payroll operations, employee compensation, tax calculations, and payment processing within the Workday platform.	21	developing
FreeAgent	FreeAgent is UK-focused cloud accounting software for small businesses, freelancers, and accountants, providing invoicing, expense tracking, time tracking, project management, b...	4	developing
Filed	Filed is an AI tax platform for accounting firms and tax professionals. It reads source documents (W-2s, 1099s, K-1s, brokerage statements, prior-year returns), compares them li...	1	developing
Casey's General Stores	Casey's General Stores (NASDAQ: CASY) is one of the largest convenience-store chains in the United States, operating more than 2,900 stores selling fuel, made-from-scratch pizza...	41	developing
TAXO	Taxo (Contadores del Futuro) is an AI-powered tax and accounting automation platform for accountants and firms (despachos) in Ecuador and Mexico, used by 2,000+ practices. It au...	1	developing
Zamp	Zamp provides a fully managed sales tax compliance platform with a robust API that enables businesses to automate sales tax calculations, filing, and remittance across the Unite...	8	developing
Fonoa	Fonoa is a global indirect tax automation platform that connects the full indirect tax lifecycle on one platform, serving enterprises across 100+ countries and jurisdictions. Th...	5	developing
Kintsugi	Kintsugi is an AI-driven sales tax compliance and automation platform that calculates US sales tax, VAT, and GST in real time, monitors economic and physical nexus, manages exem...	9	thin
takehomeapi-com	TakeHome API provides UK take‑home pay calculations, including income tax (England, Wales, Northern Ireland and Scotland), National Insurance, student loans, pensions and the Hi...	3	thin
Gigstack	Gigstack (gigstack.pro) is a Mexican fintech and revenue-automation platform that automates electronic invoicing and tax compliance for businesses operating in Mexico. It genera...	1	thin
Planomy Tax Data	A free, keyless open-data JSON API publishing the 2026 US retirement and tax figures that drive the Planomy local-first personal-finance planner: federal income-tax brackets and...	1	thin
FastSpring	FastSpring is a full-service ecommerce and merchant-of-record platform for SaaS, software, and digital product companies, handling global payments, tax compliance, subscription ...	12	thin
Co-Legal	Co-Legal B.V. is a Dutch company (KvK 42135345, Delft) building AI-native legal software and dossier support for Belgian and cross-border Belgium–Netherlands matters — wealth pl...	2	thin
Outpost	Outpost provides a modular platform for global commerce, handling payments, tax, customs, and invoicing across borders. Their solution enables merchants to sell internationally ...	3	thin
arcandledger-com	Arc & Ledger Accounting provides plain-English U.S. tax guides, IRS notice explanations, and free calculators tied to primary sources. Based in Los Angeles, the firm offers prof...	7	thin
Mosey	Mosey is a business compliance platform that helps multi-state companies open and manage state and local tax, HR, payroll, insurance, and registration accounts. The Mosey API is...	12	thin
Outpost	Outpost is a Merchant of Record and Tax of Record platform for cross-border commerce, letting retailers sell into new markets while Outpost takes on the legal and tax liability ...	3	thin
CharityAPI	CharityAPI provides a simple REST API for data about US nonprofits and charities sourced directly from IRS filings. Developers can retrieve nonprofit records by EIN, verify whet...	3	thin
Taxley (UK Corporation Tax API)	Taxley provides free UK Corporation Tax calculators and a public JSON API for developers and AI assistants. It offers tools to compute corporation tax, deadlines, penalties, and...	2	thin
Hnry	Hnry is a New Zealand-founded financial administration and accounting service for sole traders, contractors and freelancers, operating in New Zealand, Australia and the United K...	1	thin
kryptos-io	Kryptos provides a Crypto Tax, Portfolio Tracker and Finance API that connects to over 5,000 integrations across exchanges, wallets, and blockchains. It enables developers to pu...	6	thin
Cyprus Non-Dom Calculator	Cyprus Non-Dom Calculator (cyprusnondomcalculator.com) is a free web calculator and reference site that estimates what Cyprus non-domiciled status is worth in Special Defence Co...	3	thin
Vatstack	VAT number validation and EU tax rates REST API for validating European business VAT IDs via VIES and accessing current VAT rates for all EU member states. Vatstack provides aut...	7	thin
Australian Business Register	The Australian Business Register (ABR), administered within the Australian Taxation Office (ATO), holds the publicly available information businesses provide when they register ...	3	thin
TaxBandits	TaxBandits provides an e‑filing platform for IRS forms such as 1099, W‑2, W‑9, 1095, 941 and more, offering APIs that let developers integrate tax form filing, status checks, an...	1	thin
Facturama	Facturama is a cloud-based Mexican electronic invoicing (CFDI) platform that lets businesses generate, stamp, download, and cancel digital tax receipts (Comprobante Fiscal Digit...	1	thin
Cleartax	Cleartax (operating as Clear, clear.in) is an Indian fintech and financial-compliance automation platform that provides tax, GST, and e-invoicing software for individuals, tax p...	5	thin
DDD Invoices	DDD Invoices is a unified e-invoicing, fiscalization, and real-time tax reporting compliance platform delivered as a single API. It lets software companies, ERPs, SaaS platforms...	1	thin
KPMG	KPMG is one of the Big Four professional services organizations, operating through a global network of independent member firms affiliated with KPMG International Limited, a pri...	5	thin
Crypto Accountants Directory	Crypto Accountants Directory is a UK‑based guide helping individuals and businesses choose a crypto accountant. It explains key tax rules such as the 30‑day rule, token‑to‑token...	3	thin
Declarar Fácil	Declarar Fácil provides accounting services and automated tax filing for freelancers in Spain. It offers an AI‑powered agent that reads invoices and extracts data, validates it ...	12	thin
MainStreet	MainStreet is a US small-business tax-credit and back-office platform that identifies, calculates, and files R&D tax credits alongside a client's CPA. Its service covers qualifi...	1	thin
Black Ore Technologies	Black Ore Technologies is an Austin, Texas AI company building AI infrastructure for tax and financial services. Founded in 2022 by Eyal Shinar (previously founder of the fintec...	0	thin
DigitalK2	DigitalK2 (digitalk2.se) is a Swedish online service for small limited companies (aktiebolag) to create a K2 annual report (årsredovisning) and file it digitally with Bolagsverk...	1	thin
ClickDrag Finance	ClickDrag Finance provides cost segregation reports and studies for U.S. rental and commercial real estate owners, CPAs, and financial advisors. Their platform offers an API and...	1	thin
Remitian	Remitian is a fintech platform providing embedded tax payment infrastructure for tax software providers and accounting firms. Often described as the "Stripe for tax," Remitian o...	5	thin
Taina	TAINA Technology provides a fully automated, AI-driven regulatory tax compliance platform that validates and manages IRS W-series forms, CRS self-certifications, FATCA, CARF, an...	1	thin
CalcBright	CalcBright provides free online calculators and converters for Gulf gratuity, salary, GOSI, Zakat, home loans, and more. Founded in 2026, it aggregates official data sources to ...	6	thin
Quaderno	Quaderno is a tax compliance, invoicing, and sales-tax / VAT automation platform. Its REST API calculates the correct sales tax, VAT, and GST in real time for any jurisdiction, ...	14	thin
Capital Gains Tax HQ	Capital Gains Tax HQ provides a calculator that quotes the IRS and six US taxing authorities word‑for‑word, publishing the source text and date for each capital gains question. ...	3	thin
Sphere	Sphere is a developer-first global indirect tax compliance platform that automates sales tax, VAT, and GST across nexus monitoring, registration, real-time calculation, and fili...	2	thin
Tipalti	Tipalti is a global accounts payable and mass payments automation platform that enables businesses to onboard suppliers, process payments across 196 countries in 120 currencies ...	3	thin
Warp	Warp provides AI‑native payroll, tax compliance, benefits administration, and IT management tools for finance and HR teams at high‑growth companies. The platform automates onboa...	0	thin
Numeral	Numeral (Numeral HQ) is a sales-tax compliance and automation platform for ecommerce and SaaS companies. Its REST API calculates real-time sales tax by customer location at stat...	9	thin
Zeal	Zeal is an embedded, payroll-as-a-service platform. Its API lets software companies build their own payroll products - onboarding companies, employees, and 1099 contractors, run...	10	thin
H&R Block	H&R Block (NYSE: HRB) is a US tax-preparation company and Fortune 1000 constituent, operating retail tax offices, consumer and small-business tax software, and the MyBlock digit...	2	thin
Dividvo	Dividvo provides free UK limited company tax calculators and tools for directors, including corporation tax, salary versus dividend, stamp duty for company purchases, and direct...	1	thin
axel-trade	A.X.E.L (axel.trade) provides an online filing service for UK limited companies to submit their annual accounts and CT600 corporation tax returns, as well as a job management pl...	1	thin
Octobat	Octobat is a billing, invoicing, and tax-compliance platform for online businesses. It automates the creation, delivery, and storage of legally compliant invoices, credit notes,...	9	thin
Teleship	Teleship provides a DDP (Delivered Duty Paid) shipping solution for e‑commerce merchants, enabling automatic calculation and collection of duties and taxes at checkout, and ship...	1	emerging
Salsa	Salsa is embedded payroll infrastructure that lets SaaS platforms add native, multi-country (US and Canada) payroll to their products through REST and GraphQL APIs, embeddable U...	8	emerging
Australian Tax MCP	Australian Tax MCP is an independent project providing AI agents with cited retrieval over 34,500 ATO documents, the Income Tax and GST Acts, and 4,900 public rulings via the Mo...	1	emerging
Commenda	Commenda provides an AI‑native global compliance platform that helps businesses manage entity formation, local director services, registered address, compliance calendars, indir...	1	emerging
brasilnfe-com-br	Brasil NFe provides a comprehensive REST API for issuing electronic invoices (NF-e, NFC-e, NFS-e, CT-e, MDF-e, DC-e) and related tax documents in Brazil. The platform offers ser...	2	emerging
Everlance	Everlance is an automatic mileage and expense tracking platform for self-employed professionals, gig workers, contractors, and businesses, building an infrastructure platform fo...	1	emerging
Earnipay	Earnipay is a Nigerian fintech that operates an NRS/FIRS-compliant e-invoicing platform for businesses. As an accredited Nigeria Revenue Service (NRS) and NITDA systems integrat...	13	emerging
Blue J	Blue J is an AI-powered tax research platform that delivers defensible, source-backed answers to complex tax questions in seconds, drawing on primary law plus Tax Notes and IBFD...	0	emerging
MYOB	MYOB is an Australian business management platform providing REST APIs for accounting and business operations. The MYOB Business API enables integrations with invoices, bills, c...	1	emerging
Vertex	Vertex Inc. provides tax technology software and solutions that help businesses automate global tax compliance, calculate taxes, and manage tax data across multiple jurisdiction...	8	emerging
Inkle	Inkle provides AI‑powered bookkeeping, tax filing, incorporation, and virtual address services for U.S. startups and small businesses. Their platform integrates with popular acc...	1	emerging
Sage Accounting	Sage Accounting (formerly Sage Business Cloud Accounting and Sage One) is Sage's cloud-based accounting software for UK and international small and medium businesses, covering i...	1	emerging
PrestaShop	PrestaShop is an open-source e-commerce platform with a REST API for managing products, categories, orders, customers, carriers, stock, and tax rules for online stores. The Webs...	2	emerging
Clear Books	Clear Books is UK cloud accounting software with a REST API for managing invoices, expenses, bank transactions, contacts, reports, and tax submissions for small businesses.	1	emerging
Firstbase	Firstbase is an all-in-one startup operating system that helps founders form, run, and grow a US business from anywhere in the world. Its products cover incorporation (Firstbase...	0	emerging
Wealthsimple	Wealthsimple is a Toronto-based Canadian financial technology company, founded in 2014, offering a full suite of consumer financial products: managed investing (Invest), self-di...	0	emerging
Sovos	Sovos provides a global, cloud‑based platform for tax compliance, regulatory reporting, and e‑invoicing. It helps enterprises automate indirect tax calculations, filing, and inf...	6	emerging
CoinLedger	CoinLedger provides free crypto tax software that helps individuals and professionals generate tax reports for cryptocurrency transactions. Founded in 2018, the platform offers ...	0	emerging
Deloitte	Deloitte is one of the Big Four professional services organizations, operating through a network of member firms coordinated by Deloitte Touche Tohmatsu Limited (DTTL). The orga...	0	emerging
Found	Found is a fintech business-banking app for the self-employed, freelancers, and sole proprietors that combines a free business checking account (banking services provided by Lea...	5	emerging
databutler-dev	Data Butler provides official rates, thresholds, and reference data for AI agents across multiple jurisdictions such as the UK, US, Germany, and the EU. The service offers a RES...	2	emerging
Accordance Ai	Accordance (operated by Agnetic Labs Inc.) is a San Francisco frontier AI platform built for tax, audit, and accounting professionals. Founded by researchers from the Stanford A...	0	emerging
IRS	The US Internal Revenue Service (IRS) provides REST APIs and Application-to-Application (A2A) interfaces for tax information access, identity verification, income verification, ...	5	emerging
Neo.Tax	Neo.Tax is an AI-powered tax automation platform that helps enterprises and their accounting teams generate audit-ready R&D tax credit studies, software capitalization (ASC 350-...	0	emerging
Rates and Limits	A free, keyless open-data publisher exposing US federal and state tax, payroll, benefits, and wage figures as JSON. Every figure ships bundled with provenance: the exact quoted ...	1	emerging
IVIX	IVIX is an AI-powered financial-intelligence platform that analyzes publicly available data at scale to surface hidden and unreported business activity, helping government tax a...	0	emerging
Exactera	Exactera is a corporate tax technology and advisory company that pairs AI-powered software with expert tax professionals to help multinational corporations manage the full corpo...	0	emerging
Bloomberg Tax (BTAX)	Bloomberg Tax (BTAX) is a comprehensive tax research, planning, and compliance platform providing tax professionals with authoritative primary sources, expert analysis, and prac...	2	emerging
DataSnipper	DataSnipper is an AI-powered, agentic productivity platform built specifically for audit, tax, and finance teams. It automates repetitive testing and analysis work - extracting,...	0	emerging
Finaloop	Finaloop is a real-time, ecommerce-native bookkeeping and accounting platform for direct-to-consumer (DTC) and multichannel brands. It replaces QuickBooks/Xero, human bookkeeper...	0	emerging
HubSync	HubSync is an AI-powered, end-to-end tax and accounting workflow platform built for CPA firms, founded in 2019 by John McGowan and headquartered in Franklin, Tennessee. The SaaS...	0	emerging
Fifteenth	Fifteenth is a San Francisco-based fintech company operating an AI-powered personal tax platform for ambitious earners — founders, investors, executives, and technology professi...	0	emerging
Getbasis	Basis (getbasis.ai) is an AI-powered accounting platform that builds autonomous agents purpose-built for accountants. Its agents execute accounting workflows end-to-end across t...	0	emerging
Accrual	Accrual is an augmented accounting intelligence platform for accounting firms and growing service businesses, offering what it calls the complete accounting workspace spanning e...	0	emerging
BossTax	BossTax is a mobile bookkeeping and tax-filing app for 1099 workers, freelancers, and independent contractors. Founded in 2022 and based in Stamford, Connecticut, BossTax lets s...	0	emerging
Pilot	Pilot provides bookkeeping, tax, and CFO services for startups and small businesses, pairing purpose-built financial software with a team of finance experts and former operators...	0	emerging
Car Import Calculator	Car Import Calculator provides a free online tool and guides to calculate UK import duty, VAT and registration costs for vehicles imported from any country. It sources rates fro...	1	emerging
Collective	Collective is an all-in-one financial back-office platform built for self-employed entrepreneurs, solopreneurs, and businesses-of-one. It bundles S Corp formation and election, ...	0	emerging
PayPro Global	PayPro Global is an all-in-one Merchant of Record platform that lets SaaS, software, video game, and AI tool companies sell globally. The platform handles international payments...	1	emerging
Every	Every is an AI-native, all-in-one back-office and finance platform built for startups, unifying incorporation, business banking and cards, treasury and cash management, global p...	0	emerging
Heard	Heard (Heard Technologies, Inc.) is the financial management platform built specifically for therapists and wellness practitioners in private practice. Founded in 2019 and based...	0	emerging
Indinero	Indinero is a Finance-as-a-Service (FaaS) provider that combines professional accountants, tax experts, and fractional CFOs with AI-accelerated workflows to deliver outsourced a...	0	emerging
Aiwyn	Aiwyn is a practice-automation platform built for modern accounting and CPA firms, unifying payments, practice management, client experience, and tax into a single relationship-...	0	emerging
Harness Wealth	Harness — the company that launched as Harness Wealth, and today a wholly owned business of Multiplier, Inc. — is a New York City firm that runs an advisory platform for tax and...	0	emerging
Fintua	Fintua provides a comprehensive platform for indirect tax compliance, offering solutions for VAT registration, e‑invoicing, VAT recovery, and global payment integration. Their s...	0	emerging
VAT API	EU and UK VAT compliance REST API providing VAT rate retrieval, VAT number validation via the European Commission VIES system and UK HMRC, currency conversion, and VAT-compliant...	1	emerging
AdminLanding	AdminLanding is a bilingual French‑administration SaaS that helps residents and expats generate legally‑valid leases, rent receipts, tax forms and other official documents. The ...	1	emerging
USgeocoder	USgeocoder provides robust US sales tax rates and political district data for every address and geocode, including congressional, state legislative, county, municipality, school...	1	emerging
Taxfix	Taxfix is a Berlin-based fintech that lets individuals and self-employed people in Germany prepare and file their annual income tax return from a mobile app or web browser. User...	0	emerging
Bhub	BHub (bhub.com) is a Brazilian accounting and financial back-office company serving small and medium-sized businesses across Brazil. It combines bookkeeping and tax accounting (...	0	emerging
Tax ID Pro	Tax ID Pro provides an API service that validates tax identification numbers for over 100 countries worldwide. It offers a simple REST endpoint and an MCP integration, enabling ...	0	emerging
Topia	Topia is a global mobility platform for distributed workforces, used by HR, Finance and Legal teams at mid-market and enterprise companies to manage international assignments, r...	0	emerging
Alvarez & Marsal	Alvarez & Marsal (A&M) is a leading global professional services firm, founded in 1983 by Tony Alvarez II and Bryan Marsal and headquartered in New York City. Privately held, th...	0	emerging
Aerial Partners	Aerial Partners (株式会社Aerial Partners, Roppongi, Minato-ku, Tokyo) builds digital-asset accounting, tax and data-management software for the Japanese market. Its current product ...	0	emerging
LedgiFi	LedgiFi (formerly Krypto Ledgers) is a Latin American cryptocurrency tax and portfolio-tracking platform founded in 2020 and headquartered in Antofagasta, Chile. The product syn...	0	minimal
Edicom	EDICOM is a Spanish B2B data-integration company, operating since 1995 and headquartered in the Parque Tecnológico de Paterna, Valencia, that provides cloud EDI, electronic invo...	0	minimal
TaxNexus	TaxNexus is a cannabis tax compliance REST API and financial technology service that automates calculation of state, county, and local cannabis excise taxes across supported jur...	1	minimal
Loctax	Loctax is a collaborative tax compliance, risk, and governance platform built for global in-house tax teams. Founded in 2020 and based in Gent, Belgium, its Global Tax Intellige...	0	minimal
FlyFin	FlyFin is an AI-powered tax preparation and filing platform for freelancers, self-employed individuals, 1099 contractors, sole proprietorships, LLCs, S-Corps, C-Corps, partnersh...	0	minimal
VAT IT	VAT IT provides global indirect tax solutions, leveraging AI-driven technology to streamline e‑invoicing, VAT compliance, US sales tax, and VAT reclaim for businesses. Their pla...	0	minimal
Velotax	Velotax is a Brazilian digital-credit fintech (mobile app plus velotax.com.br), operating 100% online, that offers unsecured personal loans and income-tax (IRPF) refund advances...	0	minimal
Numbi	Numbi is a tech-enabled accounting and payroll firm for Colombian companies — especially SAS entities, SMBs, and startups. It pairs expert accountants with automation and AI to ...	0	minimal
Stride Health	Stride Health is a benefits platform that helps independent, gig, and part-time workers access portable benefits that stay with the individual regardless of where or how they wo...	0	minimal
Taxdoo	Taxdoo is a Hamburg-based fintech providing real-time e-commerce accounting software for online retailers and tax advisors. The platform automatically captures sales, fees, paym...	0	minimal
Prime Meridian	Prime Meridian (Prime Meridian Labs) is an AI-powered consumer tax preparation and e-filing service that files federal and state income tax returns for free. Users upload their ...	0	minimal
Loctax	Loctax provides a global tax intelligence platform powered by AI, delivering actionable tax insights across 220+ jurisdictions. It integrates IBFD’s authoritative tax content, o...	0	minimal
Taxscouts	TaxScouts is a UK online tax-return and Self Assessment service that pairs individuals, sole traders, landlords and investors with accredited accountants to prepare, review and ...	0	minimal
Solomon	Solomon (Solomon AI, solomontax.ai) is an agentic AI platform for tax preparation aimed at accounting firms, automating the preparation of review-ready individual 1040 returns f...	0	minimal
Aprilgetaprilcom	Aprilgetaprilcom, operating as April, provides embedded tax solutions for modern financial platforms. Their AI‑powered tax engine enables platforms to offer tax filing, planning...	0	minimal
CohnReznick	CohnReznick is a top-25 US accounting, tax, and advisory firm formed in 2012 by the merger of J.H. Cohn LLP and Reznick Group, P.C. The firm serves clients across more than 30 i...	0	minimal
CoinTracker	CoinTracker is a cryptocurrency portfolio tracker and crypto tax software that connects a user's exchange accounts and blockchain wallets to automatically track holdings, calcul...	0	minimal
Bensaid Avocats	Cabinet d'avocats fiscalistes : fiscalité immobilière, internationale, non-résidents, fiducie, art, contentieux fiscal. Bensaid Avocats advises an international clientele on str...	0	minimal
Canada Payroll Calculators	Canada Payroll Calculators provides free, browser‑based payroll deduction calculators built on CRA’s 2026 T4127 formulas and cross‑checked against PDOC. It offers tools for nann...	1	minimal
ExpressSteuer (fka Express Group)	ExpressSteuer (formerly Express Group) is a German tax-technology company, originally a Hamburg-based fintech backed by Insight Partners that offered an app-based, largely autom...	0	minimal
DATEV	DATEV provides software and IT services for tax consultants, auditors, and small businesses in Germany. It offers a comprehensive suite of solutions for accounting, payroll, and...	1	minimal
botcorpus	botcorpus-com is a company surfaced via the API Evangelist harvest backlog (source: mcp-registry) and added to the network as a stub for full-pipeline profiling.	1	minimal
EY	One of the Big Four professional services firms providing audit, tax, consulting, and advisory services. Operates in over 150 countries helping businesses navigate regulatory an...	0	minimal
Crete Professionals Alliance	Crete Professionals Alliance (rebranded in 2025 as "Current", current.co) is a growth platform for independent accounting firms, backed by Bessemer Venture Partners. The allianc...	0	minimal
eBilanz Fabrik	eBilanz Fabrik provides a cloud-based service to create electronic balance sheets (e‑Bilanz) from PDF, Excel or CSV files and submit them to the German tax authority via ELSTER....	1	minimal
AnyTax	AnyTax provides API‑driven tax solutions, offering tax filing, estimation, and planning services through a white‑label integration. Their platform enables banks, financial advis...	0	minimal
PwC (PricewaterhouseCoopers)	PricewaterhouseCoopers (PwC) is one of the Big Four professional services firms, with approximately 370,000 staff across a global network of member firms coordinated by Pricewat...	0	minimal
Duane Morris	Duane Morris LLP is a Philadelphia-headquartered, full-service U.S. and international law firm founded in 1904 by Russell Duane, Steven Heckscher, and Roland S. Morris. Chaired ...	0	minimal
Abacus	Abacus is an AI‑powered accounting platform that automates tax preparation, audit tie‑outs, and advisory services for accounting firms. Backed by Menlo Ventures, it integrates d...	0	minimal
Blank Rome	Blank Rome LLP is an Am Law 100 U.S. law firm founded in 1946 and headquartered in Philadelphia, with approximately 600+ attorneys across roughly 14 U.S. offices plus an interna...	1	minimal
Carr, Riggs & Ingram (CRI)	Carr, Riggs & Ingram (CRI) is a top-25 nationally ranked accounting and advisory firm headquartered in Alabama, operating 70+ locations across 13 states plus Mexico. The firm de...	0	minimal
WISECRICKET HOLDING KY	WiseCricket (WISECRICKET HOLDING KY) offers AI-powered fiscal and accounting audit software for businesses ("Software de Auditoria Fiscal y Contable con IA para Empresas"). The ...	0	minimal
LumaTax	LumaTax is a US and Canadian sales tax automation platform that helps businesses automate sales tax filings, manage nexus exposure, and streamline remittance across multiple sta...	0	minimal
Arvo Tech	ArvoTech provides tech-driven bookkeeping, tax planning, R&D credits and CFO support to help startups and small businesses save money, stay compliant, and grow. Their platform a...	0	minimal
Ruby Money	Ruby Money is a mobile accounting and tax management app designed for freelancers and independent contractors. The platform automates tax set‑asides, tracks income and expenses,...	0	minimal
Ballard Spahr	Ballard Spahr LLP is a national U.S. law firm founded in 1885 and headquartered in Philadelphia. Following its January 1, 2025 combination with Seattle-based Lane Powell, the fi...	0	minimal
Folhamatic	Folhamatic (IOB Folhamatic Group) is a Brazilian developer of integrated accounting, payroll, and fiscal/tax software for accounting firms and businesses, founded in 1990 and he...	0	minimal
Sabrix	Sabrix was a transaction (indirect / sales & use) tax determination and compliance software company whose engine calculated sales, use, VAT and GST taxes for enterprise ERP and ...	0	minimal
Dechert	Dechert LLP is a global law firm founded in 1875 and headquartered in Philadelphia, Pennsylvania, with "more than 900 lawyers" across 22 offices in the United States, Europe, th...	0	minimal
Abound	Abound was a US tax-compliance API company for platforms, marketplaces and fintechs serving the 1099 economy. Its v4 REST API covered the full information-return lifecycle: coll...	14	minimal
TrustWeaver	TrustWeaver was a Stockholm-based provider of on-demand e-invoicing and e-signature compliance services, giving multinational enterprises legally compliant electronic invoicing ...	0

APIs in this industry (1047)

Showing 200 of 1047 — search the full set on apis.io.

Facet	This cohort	Catalog	Difference	Scored
Access Clarity	31.2	25	+6.2	157
Contract Quality	21.8	18.2	+3.6	157
Discoverability	60.8	57.9	+2.9	157
Developer Ergonomics	24.5	22.1	+2.4	157
Operational Transparency	14	12.4	+1.6	157
Contract Governance	9.8	9.4	+0.4	157

Artifact	This cohort	Catalog	Difference
MCP server (any)	24%	16%	+8
MCP server (first-party)	22%	14%	+8
Agent Skills	0%	0%	0
OAuth scopes	13%	13%	0
Security	99%	98%	+1
Arazzo workflows	3%	2%	+1
Governance rules	38%	35%	+3

Tax & Compliance Software

About this industry

Market demand

Leading adopters

AI & API adoption maturity

Providers (175)

APIs in this industry (1047)

Avalara

Avalara 1099 Forms API

Avalara Accounts API

Avalara Addresses API

Avalara AdvancedRules API

Avalara Age Verification API

Avalara Attributes API

Avalara Authentication API

Avalara AvaFileForms API

Avalara Batches API

Avalara Business Entities API

Avalara CertExpressInvites API

Avalara Certificates API

Avalara Classification API

Avalara Classification Requests API

Avalara Companies API

Avalara Contacts API

Avalara Customers API

Avalara Customization API

Avalara Data Sources API

Avalara Definitions API

Avalara DistanceThresholds API

Avalara Documents API

Avalara eCommerce API

Avalara ECommerceToken API

Avalara Electronic Invoices API

Avalara Filing API

Avalara Filing Calendar API

Avalara FirmClientLinkages API

Avalara Free API

Avalara FundingRequests API

Avalara Geocoding API

Avalara HS Codes API

Avalara Interop API

Avalara Items API

Avalara JurisdictionOverrides API

Avalara Licenses API

Avalara Locations API

Avalara Lookup API

Avalara Mandates API

Avalara MultiDocument API

Avalara Nexus API

Avalara Notices API

Avalara Notifications API

Avalara Obligations API

Avalara Onboarding API

Avalara Orders API

Avalara Products API

Avalara Properties API

Avalara Provisioning API

Avalara Registrar API

Avalara Registrations API

Avalara Reports API

Avalara Returns API

Avalara Settings API

Avalara Shipping Verification API

Avalara Subscriptions API

Avalara Tax Calculation API

Avalara Tax Codes API

Avalara Tax Content for Retail Configuration API

Avalara Tax Determination API

Avalara Tax Rates API

Avalara Tax Rules API

Avalara TaxContent API

Avalara Transactions API

Avalara Upcs API

Avalara UserDefinedFields API

Avalara Users API

Avalara Utilities API

Avalara W-9 Forms API

AvaTax SOAP API

License Guidance Order API

Self-Serve Tariff Classification API