Private, independent site — not affiliated with any government agency, the IRS, SSA, DOL, or CRA.workmoneytax.com is a private, independent website. It is NOT affiliated with, endorsed by, or connected to any government agency, including the IRS, SSA, U.S. Department of Labor, any state workforce or revenue agency, or the CRA. For official determinations, use the official agency links provided on each page.

Developers

Work Money Tax exposes four developer surfaces: an MCP server for AI assistants, public versioned rule packs, embeddable calculator widgets, and llms.txt. Everything is backed by the same verified data our own calculators use — every response and every pack carries its provenance.

MCP server

Streamable-HTTP Model Context Protocol endpoint:

https://api.cosyslabs.com/workmoneytax/mcp

Tools are generated from the same registry that powers the site’s calculators, so the live list is always the server’s own tools/list response. Every tool response cites the rule pack it computed from — packId, verifiedDate, and the official sourceUrl — so agents can show users exactly where each figure comes from. Coverage follows the six wings of the hub, with tools landing as each wing’s rule packs are verified:

Unemployment Benefits
Severance & Layoffs
1099 & Gig Taxes
Nanny & Household Employer Taxes
Creator Taxes
Paycheck & Salary

See the MCP quickstart for Claude Desktop and ChatGPT setup.

Public rule packs

Every changing figure on this site (state unemployment benefit tables, IRS FICA and self-employment tax rates, federal and state withholding tables, FUTA thresholds, CPP/EI and CRA withholding figures) lives in a versioned JSON rule pack, published read-only:

https://workmoneytax.com/rulepacks/index.json   — pack directory
https://workmoneytax.com/rulepacks/<packId>.json — individual packs

Each pack includes provenance fields: packId, effectiveYear, sourceUrl (the official agency document it was transcribed from), verifiedDate, and status (verified or update-pending). If you consume a pack, honor status — stale data should fail loud, not silently.

llms.txt

AI crawlers and agents should start at /llms.txt, which maps the site’s tools, rule packs, and compliance notes in a machine-friendly format.

Embeddable widgets

Embed any calculator with a single iframe using the /embed/<slug> pattern:

<iframe
  src="https://workmoneytax.com/embed/<tool-slug>"
  width="100%"
  height="620"
  style="border:none;border-radius:12px"
  title="Calculator name"
></iframe>

No API key required.

Attribution requirements

Embeds include an attribution link back to workmoneytax.com — it must remain visible and unmodified.
If you republish figures from our rule packs, cite both the official agency source (sourceUrl) and this site as the transcription source.
Bulk scraping or redistribution of the site or rule packs without written permission is not allowed — ask us instead.
Anything you build on this data inherits our framing: estimates only, not legal, tax, financial, or benefits advice, and only the responsible agency can determine an actual tax or benefit amount.

Contact

Integration or partnership inquiries: [email protected]