Form IT-112-C: New York Resident Credit for Taxes Paid to a Province of Canada (2026)

Last reviewed: 2025-10-28

Use the New York Tax Form Calculator Form IT-112-C — New York State Resident Credit for Taxes Paid to a Province of Canada as a stand alone tax form calculator to quickly calculate specific amounts for your 2026 New York state tax return. Alternatively, you can use one of our Combined Federal and State Tax Estimators to quickly calculate your salary, tax, and take-home pay.

Form IT-112-C allows New York residents to claim a credit for provincial income tax paid to Canada. This credit prevents double taxation on income that is both taxed by a Canadian province and by New York State. Only provincial tax qualifies—not Canadian federal tax—and all amounts must be converted to U.S. dollars for reporting. Estates and trusts may also file this form when Canadian provincial income is subject to New York tax.

Attach Form IT-112-C to your IT-201 return (for residents) or, if applicable, to IT-203-ATT for part-year or nonresident filers. Each Canadian province requires a separate IT-112-C; use consistent exchange rates and retain proof of conversion.

1. Who must file: Full-year New York residents and resident estates or trusts who paid Canadian provincial income tax on income also taxed by New York. Part-year residents file for the portion of the year they were New York residents.
2. What qualifies: Only provincial tax paid on income that is also taxable by New York. Do not include Canadian federal tax or municipal surcharges.
3. Separate forms: File one IT-112-C per province. For example, a taxpayer with income in Ontario and British Columbia files two separate forms.
4. Exchange rate: Convert Canadian income and taxes to U.S. dollars using a consistent annual average exchange rate. Retain documentation for audit purposes.
5. Addback rule: If you later claim a federal foreign tax credit on the same provincial tax (via Form 1116), you must add that credit back to New York income tax in the later year.

Understanding the Credit Calculation

The credit equals the lesser of (a) the tax actually paid to the Canadian province (converted to USD) or (b) the portion of your New York State tax that applies to the same income. This ensures that New York does not credit more than its own tax liability for that income.

Part 1 – Income and Adjustments: Report each income category—such as wages, business profits, or rental income—earned in the province. Include adjustments consistent with New York AGI sourcing. Part-year residents should only include income earned while a New York resident.

Part 2 – Credit or Addback: Compute the provincial-source fraction of New York taxable income, then apply it to your total New York tax. The resulting figure represents New York’s tax on the same income. The allowable credit is the smaller of this value or the provincial tax paid. If a federal foreign tax credit is later claimed for the same provincial tax, that amount must be added back to New York tax for that future year.

Example: A taxpayer resident in New York for the full year earns CAD 40,000 in Ontario and pays CAD 4,000 in provincial tax. Using an annual exchange rate of 1 CAD = 0.75 USD, the tax equals USD 3,000. If New York’s tax on that same income equals USD 2,600, the allowable credit is USD 2,600 —the lesser of the two amounts. Should the taxpayer later use USD 500 of that same tax on federal Form 1116, the USD 500 must be added back on the New York return in that later year.

Documentation Requirements: Keep copies of provincial assessments, payment confirmations, exchange-rate proof, and reconciliations showing how provincial-sourced income ties to New York taxable income. Missing documentation may delay or disallow the credit.

Cross-Form Interaction: When computing your New York taxable income, coordinate this form with IT-225 for modifications and IT-272 for tuition deductions, if applicable. Do not use IT-112-C for non-Canadian income; use IT-112-R for other U.S. or foreign jurisdictions.

Practical Filing Tips

Use consistent exchange rates across all Canadian tax documents to simplify review. Many taxpayers rely on the annual average from the Bank of Canada or IRS-approved foreign currency tables. Consistency across provincial and federal filings supports audit accuracy.

To prevent double taxation, confirm whether the same income was also reported on Form IT-112-R. If both forms apply, complete IT-112-C first for the Canadian provincial tax, then IT-112-R for other foreign or interstate taxes.

Audit and Record-Keeping Strategy

Maintain clear links between your provincial tax slips (e.g., T4 or T5 equivalents), New York taxable income, and currency conversion logs. Proper documentation expedites review and reduces dispute risk. If a subsequent federal credit is claimed, prepare a schedule showing the corresponding New York addback to demonstrate compliance.

For complex cross-border income (e.g., self-employment or partnership allocations across Canada and New York), consult Publication 54 and NY DTF guidance for allocation rules. This ensures consistent treatment of Canadian income under both state and federal law.

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Important Notes

All calculations are estimates for guidance only. Always review your return and consider professional advice when submitting official filings.