Canadian payroll API

Payroll deductions for all 13 provinces and territories: CPP and CPP2 (QPP for Quebec), EI, QPIP, and federal and provincial income tax, plus the employer's total cost and net-to-gross. Every answer comes from the same 2026 engine as our calculators, built on CRA's T4127 formulas and checked against CRA's PDOC to the cent.

Free today: the MCP endpoint

There's no key and no signup. Send JSON-RPC 2.0 over HTTP POST to https://canada-payroll.ca/mcp; a GET returns the discovery document. AI agents that speak the Model Context Protocol can connect to the same URL.

Tool	What it returns
employee_take_home	Net pay per year and per pay period, with CPP/QPP, EI, QPIP and income tax withheld
employer_total_cost	Gross salary plus the employer's CPP, EI (1.4x) and Quebec levies, with excluded items listed
net_to_gross_salary	The gross salary that delivers an agreed take-home, the employer cost and the per-period remittances

curl -s https://canada-payroll.ca/mcp -H 'Content-Type: application/json' -d '{
  "jsonrpc": "2.0", "id": 1, "method": "tools/call",
  "params": { "name": "employee_take_home",
    "arguments": { "annual_salary": 60000, "province": "ON", "pay_frequency": "biweekly" } } }'

For a $60,000 Ontario salary paid biweekly, that returns net pay of $1,820.78 per period ($47,340.23 a year).

Founding prices for the REST API

These are the prices we plan to launch with. The API isn't live yet, so reserving is free: there's no card and no charge, and the MCP endpoint above stays free. If you reserve, we'll email you once when the API opens and hold this price for you.

Plan	Founding price	What's included
Starter	CA$49/month	Keyed REST API for the 12 provinces and territories outside Quebec, one calculation per request
Growth	CA$249/month	Everything in Starter, plus Quebec (QPP, QPIP and Revenu Québec tax) and batch requests
Scale	CA$499/month	Everything in Growth, for higher volumes, plus email support

Coming next: a keyed REST API

We're building /api/v1/payroll for payroll apps, HR tools and spreadsheets: plain JSON in and out, any pay frequency, year-to-date inputs, and a 2027 rule set as soon as CRA publishes it. It will launch for provinces we've checked against PDOC first. Join the waitlist and we'll email you when it opens.