instalment_plan
Determine whether a Canadian individual must pay quarterly income-tax instalments (the $3,000 / $1,800-Quebec net-tax-owing tests) and compute all three CRA payment options (no-calculation, prior-year, current-year) as quarterly schedules with a suggested no-interest choice. Per the CRA's instalment calculation chart, 'net tax owing' EXCLUDES CPP contributions and EI premiums payable — pass those separately as cpp_payable and they are added to the instalment amounts only (chart line 24), never to the threshold test.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| quebec | No | Quebec resident (lower federal threshold; amounts cover the FEDERAL side only — Revenu Québec runs a separate instalment system, form TP-1026) | |
| cpp_payable | No | OPTIONAL: current-year CPP contributions and EI premiums payable on self-employment income, CAD. The CRA chart excludes this from the net-tax-owing threshold test but ADDS it to the instalment amounts (chart line 24). Ignored for Quebec residents — QPP/QPIP are billed by Revenu Québec, not the CRA. | |
| prior_year_owing | Yes | Net tax owing for the prior year, CAD (same chart basis: excludes CPP/EI payable) | |
| current_year_estimate | Yes | Estimated NET TAX OWING for the CURRENT year, CAD — per the CRA calculation chart: income tax minus amounts withheld, EXCLUDING CPP/EI payable on self-employment income (pass those in cpp_payable, do NOT include them here) | |
| second_prior_year_owing | Yes | Net tax owing two years ago, CAD (same chart basis: excludes CPP/EI payable) |