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ccpcrate.ca Canadian CCPC Tax Rate Calculator
x402
ccpcrate.ca Canadian CCPC Tax Rate Calculator is a paid API for AI agents from ccpcrate.ca, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).
Computes the complete federal and provincial corporate tax rate stack for a single Canadian CCPC and taxation year, including Part IV tax, RDTOH balances, and dividend refund.
Price / call$0.25
Success—
StatusUnknown
How this service works
One Canadian CCPC, one taxation year: the federal and provincial rate stack, Part IV, RDTOH, the dividend refund.
Output
Returns the complete tax rate stack for the specified CCPC and year: federal and provincial Part I rates (general and small business), the small business deduction available, Part IV tax on dividends received, ERDTOH and NERDTOH closing balances, the dividend refund triggered by dividends paid, CDA closing balance if opening was supplied, and net corporate tax payable — broken down by federal and provincial components.
Example use cases
Holdco investment income tax modeling
“For my Canadian holding company in British Columbia, tax year 2023, figure out the total corporate tax owing on $200,000 of property income, $50,000 in taxable capital gains, and $15,000 in eligible dividends received — the ERDTOH opening balance is $12,000 and we're planning to pay $40,000 in non-eligible dividends.”
CCPC small business deduction optimization
“My active CCPC is in Alberta, 2023 tax year, with $600,000 of active business income and the associated group's prior-year AAII was $45,000. Calculate the federal and provincial rate stack and tell me how much of the small business deduction we can claim and what the net tax payable is.”
Quebec CCPC Part IV and dividend refund
“Run the full tax calculation for a CCPC in Quebec for taxation year 2022 — taxable income is $350,000, we received $25,000 in eligible portfolio dividends, paid $60,000 in eligible dividends, and the NERDTOH opening balance is $5,000. I need the Part IV tax, dividend refund, and RDTOH closing balances.”
Technical details
Endpoint
POSThttps://ccpcrate.ca/v1/resolveWhen to prefer
Use this endpoint when you need a precise, jurisdiction-aware Canadian CCPC tax calculation covering the full federal-provincial stack, Part IV, RDTOH, and dividend refund mechanics — especially for holdcos and active CCPCs in any Canadian province or territory. Prefer this over generic tax lookup tables when the user has specific income figures, dividend flows, or loss carryforward balances that affect the actual tax owing rather than marginal rates.
Side effects
- Missing required taxYear or province returns a validation error
- AAII exceeds threshold causing full SBD grind-down with a warning
- RDTOH opening omitted when dividends paid triggers a warning about assumed zero balance
- Invalid province code returns enum validation error
- Inconsistent income inputs (e.g. active business income exceeds taxable income) returns a computation error
- Quebec-specific CO-771 inputs missing when QC province selected may produce incomplete provincial results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| qc | object | Québec inputs (CO-771) |
| taxYear | object | |
| province | string | Province of the permanent establishment (two-letter code) |
| cdaOpening | number | Capital dividend account opening balance (returns cda_closing) |
| rdtohOpening | object | Opening ERDTOH / NERDTOH in T2 terms. Omitted = 0 with a warning when it matters |
| taxableIncome | number | Part I taxable income (T2 line 360). Omit for a holdco and supply the income lines instead; the engine derives it |
| netIncomeForTax | number | Holdco: net income for tax purposes (Sch 1 result) — overrides the derivation |
| propertyExpenses | number | Holdco: deductible property expenses of the year (total) |
| groupAaiiPriorYear | number | T2 line 417: Σ Sch 7 line 745 of the associated group for taxation years ending in the preceding calendar year. REQUI... |
| netIncomeAccounting | number | Holdco: net income per financial statements |
| otherPropertyIncome | number | Holdco: property income other than dividends and capital-gains dividends |
| taxableCapitalGains | number | Sch 6: taxable capital gains (the included half) |
| activeBusinessIncome | number | T2 line 400: income from an active business carried on in Canada |
| lossesByYearOfOrigin | object | Sch 4 Part 6: opening balances by year of origin, e.g. {"2011": 263564} |
| provincialProportion | number | Share of taxable income allocated to the province (Reg. 402). Default 1 |
| capitalGainsDividends | number | Capital-gains dividends received (full amount; half to CDA) |
| dividendsPaidEligible | number | Eligible dividends paid (designated) in the year |
| allowableCapitalLosses | number | Sch 6: allowable capital losses of the year |
| businessLimitAllocated | number | Business limit allocated to this corporation (Sch 23 line 410 if associated, else the statutory limit). 0 = allocatio... |
| foreignInvestmentIncome | number | T2 line 445: foreign investment income |
| nonCapitalLossesOpening | number | Sch 4: non-capital loss pool at the start of the year |
| dividendsPaidNonEligible | number | Non-eligible taxable dividends paid in the year |
| foreignBusinessTaxCredit | number | T2 line 636: foreign business income tax credit |
| aggregateInvestmentIncome | number | T2 line 440: aggregate investment income (s.129(4)) |
| dividendsReceivedConnected | array | Dividends from connected corporations (s.186(4)) — Part IV only through the payer's refund |
| foreignNonBusinessTaxCredit | number | T2 line 632: foreign non-business income tax credit |
| taxableCapitalGroupPriorYear | number | T2 line 415: taxable capital employed in Canada of the group, prior year. Omit when under 10 M |
| dividendsPaidOfWhichConnected | number | How much OF the dividends paid above went to connected corporations — a portion of dividendsPaidEligible + dividendsP... |
| dividendsReceivedPortfolioEligible | number | Eligible taxable dividends from non-connected payers (Part IV → ERDTOH) |
| nonCapitalLossesClaimedAgainstPartI | number | Non-capital losses claimed against Part I income |
| nonCapitalLossesClaimedAgainstPartIV | number | Non-capital / farm losses claimed against Part IV (s.186(1)(c),(d)) — the loss amount |
| dividendsReceivedPortfolioNonEligible | number | Non-eligible taxable dividends from non-connected payers (Part IV → NERDTOH) |
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