Disability Benefits Across the Border: CPP-D, SSDI, and the Disability Tax Credit

Canada and the United States each pay disability benefits through their social security systems, and the treaty taxes both the same way it taxes retirement benefits: only in the recipient's country of residence, with a partial exclusion. What does not travel is the tax credit. Canada's Disability Tax Credit is available only to Canadian residents (and, in limited cases, to non-residents with Canadian-source income), and the US has no direct equivalent. A person with a disability who moves keeps the benefit and loses the credit, and the benefit's tax treatment changes with the move.

Key takeaways

• CPP disability (CPP-D) paid to a US resident is taxable only in the US under Article XVIII(5), treated like US Social Security: up to 85% is included in income depending on total income; no Canadian withholding.
• US Social Security Disability Insurance (SSDI) paid to a Canadian resident is taxable only in Canada, treated like a CPP benefit: 85% is included in income (a 15% deduction applies); no US withholding.
• CPP-D paid to a Canadian resident is fully taxable in Canada. SSDI paid to a US resident is taxable in the US under the domestic rules, up to 85% depending on income.
• The Disability Tax Credit (DTC) is a Canadian non-refundable credit (federal about $1,500 of tax value plus provincial) for a severe and prolonged impairment certified on Form T2201; it is available to Canadian residents and unlocks the RDSP, the child disability benefit, and other measures. It is not available to a non-resident except against Canadian-source income in narrow cases.
• Private disability insurance benefits follow different rules: taxable if the employer paid the premiums, tax-free if the employee did, in both countries, with the treaty sourcing them to the country where the employment was exercised.

CPP-D for a US resident

A Canadian who becomes disabled and later moves to the US, or who is already in the US when approved, receives CPP-D from Service Canada with no Canadian withholding. Under the treaty, the benefit is taxable only in the US, and the US treats it as Social Security: the taxable portion is 0%, 50%, or 85% depending on the recipient's combined income. For a low-income recipient, it can be entirely tax-free. The recipient reports it on the 1040 (Form SSA-1099 equivalent is the Canadian T4A(P), converted to US dollars). Florida, Texas, and most states do not tax Social Security-type benefits; a few do.

SSDI for a Canadian resident

An American, or a Canadian who worked in the US, who receives SSDI while resident in Canada receives it with no US withholding under the treaty. Canada taxes it as if it were a CPP benefit, with a 15% deduction, so 85% is included in income at Canadian rates. The recipient reports the gross amount on the T1 (converted to Canadian dollars) and claims the deduction. Provincial tax applies. No US return is required for the SSDI alone.

The Disability Tax Credit

The DTC requires a medical practitioner to certify on Form T2201 that the person has a severe and prolonged impairment in physical or mental functions. Once approved, it reduces federal tax by about $1,500 a year and provincial tax by a further amount, can be transferred to a supporting relative, and unlocks the Registered Disability Savings Plan (with its matching grants and bonds), the child disability benefit, and the disability supplement to the Canada Workers Benefit.

A Canadian who moves to the US loses the DTC as a non-resident (it can be claimed against Canadian-source income only where the non-resident's Canadian-source income is substantially all of their income). The RDSP stays open but contributions and grants stop, and the US treats it as a foreign trust. The US has no equivalent credit; its disability-related relief runs through the medical expense deduction, the credit for the elderly or disabled (small and income-limited), and ABLE accounts.

Private disability insurance

Long-term disability benefits from an employer plan are taxable if the employer paid the premiums and tax-free if the employee paid them with after-tax dollars, in both countries. The treaty sources them under Article XV to the country where the employment was exercised, so a Canadian on LTD from a Canadian employer who moves to the US continues to have Canadian-source employment income, taxable in Canada with a US foreign tax credit, unless the benefit is characterized as a pension under Article XVIII.

Worked example

A Toronto engineer approved for CPP-D at $1,600 a month moves to Arizona to live with family. She also receives $2,500 a month of LTD from her former employer's plan (employer-paid premiums) and had the DTC in Canada.

• CPP-D. Taxable only in the US; treated as Social Security; with her total income, 85% is included on the 1040. Arizona does not tax Social Security-type benefits.
• LTD. Employer-paid, so taxable. Canadian-source employment income under Article XV; Canadian withholding applies; taxed in Canada as a non-resident on that income; US foreign tax credit.
• DTC. Lost on departure; her Canadian-source LTD income may allow a non-resident claim if it is substantially all her income, which it is not.
• RDSP. Stays open; no further contributions or grants; foreign trust reporting in the US.

Official sources

"Benefits under the social security legislation in a Contracting State (including tier 1 railroad retirement benefits but not including unemployment benefits) paid to a resident of the other Contracting State shall be taxable only in that other State, subject to the following conditions: (a) a benefit under the social security legislation in the United States paid to a resident of Canada shall be taxable in Canada as though it were a benefit under the Canada Pension Plan, except that 15 per cent of the amount of the benefit shall be exempt from Canadian tax; and (b) a benefit under the social security legislation in Canada paid to a resident of the United States shall be taxable in the United States as though it were a benefit under the Social Security Act, except that a type of benefit that is not subject to Canadian tax when paid to residents of Canada shall be exempt from United States tax." — Canada-United States Tax Convention, Article XVIII(5), https://www.canada.ca/en/department-finance/programs/tax-policy/tax-treaties/country/united-states-america-convention-consolidated-1980-1983-1984-1995-1997.html

"The disability tax credit (DTC) is a non-refundable tax credit that helps people with disabilities, or their supporting family member, reduce the amount of income tax they may have to pay." — Canada Revenue Agency, Disability tax credit, https://www.canada.ca/en/revenue-agency/services/tax/individuals/segments/tax-credits-deductions-persons-disabilities/disability-tax-credit.html

Practitioner note

Disability files are the ones where the benefit follows the person and the credit does not. We tell clients before the move that the CPP-D will be taxed more lightly in the US than in Canada for most incomes, and that the DTC, the RDSP grants, and the provincial supplements end the day they become non-residents. For some clients that changes the decision.

See also: Planning a move? Start with the Canada-to-US tax checklist and browse every corridor by city, province, and state.

Next step

Fairlight prepares the treaty position on CPP-D or SSDI, the returns in both countries, and the RDSP and DTC analysis for a client with a disability who is moving. See cross-border pricing or book a call.