🇺🇸Tax & Compliance Software in United States
12 tax & compliance software providers in United States, publishing 12 APIs.
Tax & Compliance Software in United States — 12 providers on the APIs.io network sit in both cohorts, and between them they publish 12 indexed APIs.
2 of the 12 publish at least one machine-readable API; 10 publish nothing indexed at all. That split is the first thing worth reading here — a vertical can be well represented in a market and still have almost no programmable surface.
By Kin Score band: 6 emerging, 5 minimal, and 1 developing.
Leading by rating: OptionsAhoy, IVIX, HubSync, Fifteenth, BossTax, Heard, and 6 more.
Country membership reads a tag, a stated headquarters or a stated nationality. A provider lands in United States when one of its own top-level tags names the country, when its own description states a headquarters that names the country or one of its cities, or when it describes itself by nationality (“a French company”; roadmap#542, #719). Region words (“Latin American”), language uses (“French-speaking”) and a city named outside a headquarters statement are not counted, so this cell is a floor, not a census.
Providers (12)
| Provider | Description | APIs | Rating |
|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
Indexed API documents (12)
Two numbers, both real: these providers publish 12 APIs as their own documents, which the catalog indexes split one-per-resource into 12 documents.
OptionsAhoy MCP Server
OptionsAhoy Equity Planner (A2A Agent)
OptionsAhoy Concentration API
OptionsAhoy Discovery API
OptionsAhoy Equity Funding API
OptionsAhoy Hedging API
OptionsAhoy ISO API
OptionsAhoy NSO API
OptionsAhoy QSBS API
OptionsAhoy RSU API
OptionsAhoy Rsu Lot Optimize API
Blank Rome Public Website
Other industries in United States
Tax & Compliance Software elsewhere
This page is the intersection of two independently computed cohorts:
United States and
Tax & Compliance Software. A provider appears here only when it is
already a member of both. United States membership is matched on tag, stated HQ,
so this is a floor rather than a census — coverage gaps show up here as small numbers, not as absent pages.
Work with this as data
Every country here is available over the APIs.io API and to AI agents over MCP. Countries is not yet its own endpoint on the v1 API. Reach it through catalog search and the tag graph, or the MCP server.