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 offers a developer-friendly API that acts as a unified gateway to multiple tax authorities, enabling automated, jurisdiction-aware payment processing. The platform raised $7M in seed funding in 2026 and enables partners to embed payment initiation, validation, and confirmation directly within their existing platforms, replacing manual government portal logins with automated payment infrastructure.

Remitian publishes 5 API contracts indexed on the APIs.io network, including Accounts API, Audit Logs API, Jurisdictions API, and 2 more. Tagged areas include Tax, Payments, Fintech, Accounting, and Webhook.

The Remitian catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 3 Spectral governance rulesets.

Remitian’s developer surface includes engineering blog, authentication, documentation, and 12 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

29.8/100 thin ▬ flat Agent 29/100 agent ready Front door AI 1/6 silent Heartbeat 89/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Tax Payments Fintech Accounting Webhook Embedded Payments

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Tax Management

BC-220

Payments

POST /v1/payments POST /v1/payments/{paymentId}/confirm

Developer Platform & API Ecosystem Management

BC-4270

Webhooks

POST /v1/webhooks

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 29.8/100 · thin

Contract Quality 11.8 / 19

Developer Ergonomics 2.9 / 15

Access Clarity 1.2 / 15

Operational Transparency 0.8 / 10

Contract Governance 1.2 / 9

Discoverability 5.6 / 8

Regulatory Posture 2.3 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 29/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Payments regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

6 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 7.9 — up to +18.4 composite points
Developer Ergonomics scores 19.0 — up to +16.2 composite points
Operational Transparency scores 7.9 — up to +12.0 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/remitian/apis.yml: open an issue on github.com/api-evangelist/remitian to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 5

Individual APIs this provider publishes, each with its own machine-readable definition.

Remitian Accounts API

Manage client accounts and their linked bank connections for tax payment processing.

Remitian Audit Logs API

Access bank-grade audit logs that track every payment from initiation to completion for compliance and reconciliation.

Remitian Jurisdictions API

Retrieve and manage supported tax jurisdictions and their associated payment requirements and routing rules.

Remitian Payments API

Initiate, validate, and confirm tax payments across multiple jurisdictions through a single unified gateway.

Remitian Webhooks API

Manage webhook subscriptions for real-time payment status updates and event notifications.

Open Collections 6

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Remitian Tax Payment Accounts API

OPEN COLLECTION

Remitian Tax Payment Accounts Audit Logs API

OPEN COLLECTION

Remitian Tax Payment Accounts Jurisdictions API

OPEN COLLECTION

Remitian Tax Payment Accounts Payments API

OPEN COLLECTION

Remitian Tax Payment API

OPEN COLLECTION

Remitian Tax Payment Accounts Webhooks API

OPEN COLLECTION

Remitian API pricing

Not yet checked against Remitian's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against Remitian's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Remitian Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Remitian Rate Limits

5 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Remitian

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Remitian Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Remitian Tax Payment Events

Real-time webhook events from the Remitian Tax Payment API. These events provide status updates for tax payments as they move through initiation, validation, processing, and com...

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Remitian Context

0 classes · 6 properties

JSON-LD

Spectral Rules 3

Spectral governance rulesets for linting and validating these APIs.

Remitian — asyncapi rules

8 rules · 1 errors 7 warnings

SPECTRAL

Remitian — jsonschema rules

6 rules · 4 warnings 2 info

SPECTRAL

Remitian API Rules

11 rules · 6 errors 4 warnings 1 info

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

Remitian Tax Payment

14 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Remitian Payment Structure

0 properties

JSON STRUCTURE

Examples 3

Example request and response payloads for these APIs.

Remitian Initiate Payment Example

2 fields

EXAMPLE

Remitian List Jurisdictions Example

2 fields

EXAMPLE

Remitian Validate Payment Example

2 fields

EXAMPLE

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Remitian Authentication

http · 1 scheme

SECURITY

Remitian Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Remitian Agentic Access

15 operations · 7 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LlmsText

LlmsText

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

Help Center

Help Center

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 5

The organization behind the API

Blog

Blog

LinkedIn

Website

Website

About

About

Press

Press

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: remitian
name: Remitian
description: 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 offers a developer-friendly API that acts as a unified gateway
  to multiple tax authorities, enabling automated, jurisdiction-aware payment processing. The platform raised $7M in seed
  funding in 2026 and enables partners to embed payment initiation, validation, and confirmation directly within their existing
  platforms, replacing manual government portal logins with automated payment infrastructure.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/remitian.png
tags:
- Tax
- Payments
- Fintech
- Accounting
- Webhook
- Embedded Payments
tags_raw:
- Tax
- Payments
- Fintech
- Accounting
- Webhooks
- Embedded Payments
url: https://raw.githubusercontent.com/api-evangelist/remitian/refs/heads/main/apis.yml
created: '2026-03-24'
modified: '2026-10-06'
specificationVersion: '0.23'
apis:
- aid: remitian:remitian-accounts-api
  name: Remitian Accounts API
  description: Manage client accounts and their linked bank connections for tax payment processing.
  humanURL: https://remitian.com/integrations/integrate-remitian
  baseURL: https://api.remitian.com
  tags:
  - Account
  tags_raw:
  - Accounts
  properties:
  - type: OpenAPI
    url: openapi/remitian-accounts-api-openapi.yml
  - type: Documentation
    url: https://remitian.com/integrations/integrate-remitian
  - type: AsyncAPI
    url: asyncapi/remitian-tax-payment-asyncapi.yml
- aid: remitian:remitian-audit-logs-api
  name: Remitian Audit Logs API
  description: Access bank-grade audit logs that track every payment from initiation to completion for compliance and reconciliation.
  humanURL: https://remitian.com/integrations/integrate-remitian
  baseURL: https://api.remitian.com
  tags:
  - Audit Logs
  properties:
  - type: OpenAPI
    url: openapi/remitian-audit-logs-api-openapi.yml
  - type: Documentation
    url: https://remitian.com/integrations/integrate-remitian
  - type: AsyncAPI
    url: asyncapi/remitian-tax-payment-asyncapi.yml
- aid: remitian:remitian-jurisdictions-api
  name: Remitian Jurisdictions API
  description: Retrieve and manage supported tax jurisdictions and their associated payment requirements and routing rules.
  humanURL: https://remitian.com/integrations/integrate-remitian
  baseURL: https://api.remitian.com
  tags:
  - Jurisdictions
  properties:
  - type: OpenAPI
    url: openapi/remitian-jurisdictions-api-openapi.yml
  - type: Documentation
    url: https://remitian.com/integrations/integrate-remitian
  - type: AsyncAPI
    url: asyncapi/remitian-tax-payment-asyncapi.yml
- aid: remitian:remitian-payments-api
  name: Remitian Payments API
  description: Initiate, validate, and confirm tax payments across multiple jurisdictions through a single unified gateway.
  humanURL: https://remitian.com/integrations/integrate-remitian
  baseURL: https://api.remitian.com
  tags:
  - Payments
  properties:
  - type: OpenAPI
    url: openapi/remitian-payments-api-openapi.yml
  - type: Documentation
    url: https://remitian.com/integrations/integrate-remitian
  - type: AsyncAPI
    url: asyncapi/remitian-tax-payment-asyncapi.yml
- aid: remitian:remitian-webhooks-api
  name: Remitian Webhooks API
  description: Manage webhook subscriptions for real-time payment status updates and event notifications.
  humanURL: https://remitian.com/integrations/integrate-remitian
  baseURL: https://api.remitian.com
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/remitian-webhooks-api-openapi.yml
  - type: Documentation
    url: https://remitian.com/integrations/integrate-remitian
  - type: AsyncAPI
    url: asyncapi/remitian-tax-payment-asyncapi.yml
common:
- type: Plans
  url: plans/remitian-plans-pricing.yml
- type: RateLimits
  url: rate-limits/remitian-rate-limits.yml
- type: FinOps
  url: finops/remitian-finops.yml
- url: https://remitian.com/blog/
  type: Blog
- type: CapabilityMap
  url: capabilities/remitian-capability-edges.yml
  name: Remitian Business Capability Map
- type: AgenticAccess
  url: agentic-access/remitian-agentic-access.yml
- type: DomainSecurity
  url: security/remitian-domain-security.yml
- type: Authentication
  url: authentication/remitian-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/remitian
- type: Website
  url: https://remitian.com
- type: Documentation
  url: https://remitian.com/integrations/integrate-remitian
- type: Help Center
  url: https://help.remitian.com
- type: About
  url: https://remitian.com/about-us
- type: Integrations
  url: https://remitian.com/integrations
- type: Press
  url: https://www.cpapracticeadvisor.com/2026/03/20/remitian-raises-7-million-unveils-tax-payment-api/180028/
- type: LlmsText
  url: https://remitian.com/llms.txt
features:
- name: Jurisdiction-Aware Routing
  description: Automatically routes payments to the correct tax authority based on jurisdiction rules, supporting federal,
    state, provincial, and local authorities.
- name: Payment Lifecycle Management
  description: Full payment lifecycle from draft through validation, confirmation, processing, and completion with status
    tracking at each stage.
- name: Webhook Event Delivery
  description: Real-time payment status notifications via webhooks with HMAC-SHA256 signature verification for secure event
    delivery.
- name: Bank-Grade Audit Logs
  description: Immutable audit logs tracking every payment event from initiation to completion for compliance and reconciliation.
- name: Multi-Jurisdiction Support
  description: Single API integration spanning federal, state, provincial, and local tax authorities across multiple countries.
- name: Account Management
  description: Client account management with verified bank connections for direct payment routing to tax authorities.
solutions:
- name: Tax Software Integration
  description: Embed tax payment capabilities directly in tax preparation software, enabling a seamless "ready to file → ready
    to pay" workflow for clients.
- name: Accounting Firm Portal
  description: Automate multi-client tax payment processing for accounting firms managing payments across multiple jurisdictions
    from a single dashboard.
- name: ERP Tax Automation
  description: Integrate tax payment automation into ERP and financial systems to eliminate manual bank portal interactions
    for corporate tax payments.
useCases:
- name: Embedded Tax Payment
  description: Integrate tax payment initiation and confirmation into existing tax software workflows so users never leave
    the application to pay taxes.
- name: Multi-Jurisdiction Tax Processing
  description: Manage quarterly estimated tax payments, payroll taxes, and annual returns across federal, state, and local
    jurisdictions from one API.
- name: Automated Reconciliation
  description: Use audit logs and webhook events to automatically reconcile tax payments in accounting ledgers without manual
    data entry.
integrations:
- name: Tax Software Platforms
  description: Integration with tax preparation and filing software providers
- name: Accounting Firm Portals
  description: White-label integration for accounting firm client portals
- name: ERP Systems
  description: Integration with enterprise resource planning systems for corporate tax
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Remitian API — frequently asked questions

Does Remitian have an API?

Yes. APIs.io lists 5 APIs from Remitian, including Remitian Accounts API, Remitian Audit Logs API and Remitian Jurisdictions API, and 2 more.

Is there an OpenAPI specification for the Remitian API?

Yes. APIs.io indexes 5 OpenAPI specifications for Remitian, each linked for download from this page.

How do I authenticate with the Remitian API?

Remitian uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Remitian Authentication.

How much does the Remitian API cost?

APIs.io lists 3 pricing plans for Remitian, with each plan's price, limits and inclusions under Pricing on this page.

Is the Remitian API ready for AI agents?

Remitian has a Kin Score of 29.8 out of 100 (thin) and an Agent Readiness score of 28.8 (agent-ready), scored by API Evangelist on 2026-11-06.

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