Retiring in Canada with American Ties

If you have worked in both Canada and the United States, retirement planning can involve many moving parts. You may eventually receive Canada Pension Plan (CPP) or Quebec Pension Plan (QPP) benefits, Old Age Security (OAS), U.S. Social Security, employer pensions, and withdrawals from Canadian and U.S. retirement accounts.

Many people are surprised to learn that working on both sides of the border does not mean starting from scratch in each country's pension system. But qualifying for benefits is only part of the planning. You also need to decide when to take them and how they fit with the rest of your retirement income.

You May Qualify for Benefits From Both Countries

Canada and the United States have a Social Security Agreement that helps coordinate the two systems. If you do not have enough years of coverage to qualify for a benefit in one country, periods of coverage in the other country may sometimes help you qualify.

For example, someone who worked in the United States for fewer than the 40 credits generally required for U.S. Social Security retirement benefits may still qualify by using Canadian coverage under the agreement, provided the applicable requirements are met.

The same concept can work in the other direction for CPP and OAS eligibility in certain circumstances.

One misunderstanding is that your Canadian and U.S. pension credits somehow get combined into one larger pension. That is not how it works. The agreement may help you qualify, but each country generally calculates and pays its own benefit based on its rules and your applicable history.

WEP Is No Longer the Problem It Used to Be

For years, Canadians with U.S. work history had another issue to consider called the Windfall Elimination Provision. WEP could reduce U.S. Social Security benefits for someone who also received a pension based on work that was not covered by U.S. Social Security. CPP or QPP benefits could therefore result in a lower Social Security benefit for some retirees.

That changed with the Social Security Fairness Act, which was signed into law in January 2025. The legislation eliminated WEP, with the repeal applying retroactively to January 2024. For Canadians who previously expected CPP or QPP to reduce their U.S. Social Security under WEP, this can materially change retirement-income projections.

When Should You Start CPP and Social Security?

Qualifying for benefits is only the beginning. You still need to decide when to take them. Both CPP and U.S. Social Security give retirees choices about when to begin receiving benefits, and delaying can result in a larger monthly payment. The rules and available starting dates are different for each program.

Many retirees instinctively start whichever pension becomes available first. In practice, the decision is often more nuanced. The best time to start CPP may not be the best time to start Social Security.

Life expectancy, other retirement income, taxes, investment assets, your spouse's benefits, and your need for cash flow all matter.

Currency matters too. CPP and OAS are paid in Canadian dollars, while Social Security is based in U.S. dollars. If you retire in Canada, currency fluctuations may increase or decrease the Canadian-dollar value of your U.S. income.

OAS Has Different Rules

Old Age Security is different from CPP and Social Security because eligibility is generally based on your years of Canadian residency rather than employment contributions. The amount you receive can depend on how long you have lived in Canada after age 18.

The Canada-U.S. Social Security Agreement may help some people meet the minimum eligibility requirements for OAS, but it does not turn years spent in the United States into years of Canadian residence for purposes of calculating a full OAS pension.

OAS is also subject to an income-tested recovery tax, commonly called the OAS clawback. If you have significant pension, investment, or other retirement income, including income from the United States, those sources should be considered when planning your withdrawal strategy.

How Is U.S. Social Security Taxed in Canada?

If you live in Canada and receive U.S. Social Security, the Canada-U.S. tax treaty generally gives Canada the exclusive right to tax the benefit. For most Canadian residents, the full U.S. Social Security benefit is reported in Canadian dollars on the Canadian tax return. A deduction equal to 15% of the benefit is generally available, effectively leaving 85% subject to Canadian tax.

That is different from simply having U.S. tax withheld and claiming a Canadian foreign tax credit.

Other U.S. retirement income needs to be considered separately. A traditional IRA, Roth IRA, 401(k), and employer pension do not necessarily receive identical Canadian or U.S. tax treatment.

For a U.S. citizen living in Canada, there is another layer as well. U.S. citizenship generally means continuing U.S. tax filing obligations even while you are resident in Canada.

Coordinate Your Pensions and Retirement Accounts

Taking more from an RRSP could increase your Canadian marginal tax rate or OAS recovery tax. Delaying Social Security may mean drawing more heavily from investments earlier in retirement. Exchange rates will affect the Canadian-dollar value of U.S. income. Survivor benefits and your spouse's citizenship or residency can add another layer.

Looking at each decision in isolation can miss those interactions.

Build One Retirement Plan

If you have worked in both Canada and the United States, start by obtaining estimates of the benefits you expect to receive from each country. Then put everything on the same timeline: CPP or QPP, OAS, Social Security, employer pensions, RRSPs and RRIFs, IRAs and 401(k)s, and your other savings.

From there, you can compare different pension starting dates, withdrawal strategies, tax outcomes, and exchange-rate assumptions. The goal is rarely to maximize CPP, OAS, or Social Security in isolation. What matters is how all of your income sources work together to support your after-tax spending needs and provide flexibility during your retirement.

For someone who has spent a career on both sides of the border, that combined view is much more useful than making a series of separate decisions about pensions and retirement accounts.