If you retire abroad without knowing this one rule, your OAS can disappear after just six months. Most Canadians have no idea it even exists.
Picture two retirees. Same age. Same savings. They both retire overseas. One keeps OAS for life. The other loses it permanently.
The difference is not income, taxes, or work history. It comes down to one residency rule that decides whether OAS follows you abroad or stops cold. It surprises many of our clients, and I’ll walk you through the rules and pitfalls in this blog post.
Why OAS Matters More When You Retire Abroad
When you retire abroad, OAS matters more than most people realize. For many expats, it’s the one piece of income that’s guaranteed, predictable, and shows up every month no matter what markets do.
The maximum OAS is about $742 per month if you’re 65 to 74, and $816 per month once you turn 75. That’s roughly $9,000 to $9,800 per year, indexed to inflation, for life.
In many countries, that alone can cover rent, healthcare, or basic living costs. Lose it, and you’re suddenly forced to replace close to $10,000 a year of guaranteed income, potentially hundreds of thousands of dollars over a retirement.
And losing OAS abroad hurts more than in Canada, because you don’t have Canadian safety nets to fall back on. No provincial healthcare. No local subsidies. No easy way to plug the gap.
That’s why getting this right matters so much when you plan to retire outside Canada.
The 1 OAS Rule That Decides Everything
Here’s the rule that decides everything: the 20-year residency rule.
If you want to keep receiving OAS while living outside Canada, you must have at least 20 years of Canadian residency after age 18. Not years worked. Not years contributed. Residency years.
According to Service Canada, residency means when you ordinarily make Canada your home. In plain English, it’s about where you physically lived, not how you filed your taxes.
This is where people get caught. The Canada Revenue Agency can still treat you as a Canadian tax resident if you keep ties like a home or bank accounts. But Service Canada uses a different test. Years spent physically abroad usually do not count toward the 20-year OAS requirement, even if you paid Canadian tax the entire time.
Quick example: Jerry lived in Canada for 19 years, then worked overseas while still filing Canadian taxes. When he retired abroad, his OAS stopped after six months. He was one year short.
That surprised me too. It feels counterintuitive. But miss 20 years, even by one, and OAS can stop cold.
Why So Many Canadians Get OAS Abroad Wrong
Here’s where the confusion starts. If you stay in Canada, OAS is easy to qualify for. You only need 10 years of Canadian residency after age 18 to receive OAS at 65, vs 20. The amount is prorated, with 40 years giving full OAS, and each year earning one-fortieth of the benefit.
You might get a partial pension based on how long you lived in Canada (years lived in Canada ÷ 40)
Meet Jerry. Jerry moved to Canada at 55, lived here for 10 years, and retired at 65. Because he stayed in Canada, he qualifies for OAS. But with only 10 years of residency, he receives about 25% of the full OAS, paid for life as long as he remains in Canada.
Also, many people think OAS works like CPP. It doesn’t.
CPP is based on income and contributions. You pay into it while you work, and your benefit depends on how much and how long you contribute. OAS is not tied to work at all. It’s based entirely on residency.
That distinction matters the moment you leave Canada. To keep OAS while living abroad, you must have 20 years of physical Canadian residency after age 18. Tax residency does not count.
Have less than 20 years, and OAS stops after six months abroad. Have 20 or more, and it can follow you permanently, subject to tax and clawback rules.
And if you’re thinking about lying on your OAS application about your physical presence, please reconsider. If you’ve seen my video How Does the CRA Know If You’re Leaving Canada?, you know border entry records are easy to verify. If you get caught, OAS can be clawed back in full, plus penalties.
OAS residency is like collecting loyalty points – Only in-country purchases count, and you have to collect 20 years to qualify.
If you’re planning to retire abroad, don’t leave thousands on the table. At Blueprint Financial, we specialize in cross-border retirement planning for Canadians. We’ll audit your residency status, optimize your tax withholding, and build a plan that protects your OAS. Book a free discovery call today. Build the life you want, with the right Blueprint.
The Sneaky Exception: Social Security Agreements
Here’s an exception that surprises a lot of people: Canada has social security agreements with many countries, and in some cases, these agreements can help if you’re short of the 20-year residency rule.
According to Service Canada, time spent living or working in a treaty country may be combined with your Canadian residency only to help you qualify for OAS payments abroad.
But this is the key point most people miss:
These agreements do not increase how much OAS you receive. Your OAS amount is still calculated only based on the years you physically lived in Canada.
Example:
Meet Linda. Linda lived in Canada for 15 years, then moved to the United States, a country with a social security agreement with Canada, where she worked for another 10 years. Because of the agreement, Linda may qualify to receive OAS while living abroad, even though she has fewer than 20 Canadian years.
But her payment is still based on 15 years, not 25. That means she receives 15/40ths of full OAS, not the full amount.
So these agreements can help you get paid, but they won’t help you get more paid.
You’re probably noticing the pattern here – the government doesn’t make this easy to understand. If you’ve made it this far in the video, you’re doing the homework most people skip
OAS Taxes Abroad: The Second Trap People Miss
This is where many retirees get even more confused. OAS eligibility and OAS taxation are two completely separate systems, and mixing them up causes real problems.
Automatic non-resident withholding
If you’re considered a non-resident for tax purposes, your OAS is subject to an automatic 25% withholding tax, deducted right at the source. There’s no opt-in and no warning. It just happens.
Importantly, this has nothing to do with eligibility. You can be a non-resident for tax purposes and still receive OAS, as long as you meet the 20-year residency rule.
How tax treaties reduce the tax
In many cases, tax treaties reduce that 25% withholding, often to 15%, and in some cases 0%.
For example:
- United States: Under the Canada–U.S. tax treaty, U.S. residents can often have Canadian non‑resident tax reduced or eliminated on certain Canadian pension‑type payments, including OAS.
- Portugal and Italy: withholding is commonly reduced to 15%
To apply the reduced treaty rate upfront, you must file Form NR5 with the Canada Revenue Agency. If you don’t, the full 25% is withheld and you’ll need to recover any excess later.
Don’t forget local taxes
Even if Canada withholds less or nothing, your new country may still tax your OAS. Some countries won’t tax it at all. Others treat it as foreign pension income and tax it locally. Same OAS, very different outcomes depending on where you live.
Before we move on, if you’re thinking about leaving Canada, make sure you’re not missing any key steps. I put together a free guide on the 7 biggest CRA tax traps Canadians face when moving abroad. You can grab it at the link below.
📥 https://blueprintfinancial.ca/exit-canada-tax-guide-download
Strategic Planning for Retiring Abroad
Before you leave Canada, don’t guess your OAS residency status. There’s no single dashboard that shows your official count. The most reliable step is to request a residency determination from Service Canada, ideally in writing.
To support that review, gather objective records: immigration documents showing when you became a permanent resident or citizen, border entry and exit history, employment records (T4s, pay stubs), school enrollment documents, and housing records like leases or property ownership. Tax returns can support your timeline, but they don’t decide residency on their own.
If you’re close to 20 years, consider delaying your move. Even one additional year can secure lifetime OAS payments abroad and increase your benefit by 2.5%.
If staying longer isn’t possible, look at alternatives. Check whether a social security agreement with your destination country can help you qualify. If not, plan to replace the income through higher CPP deferral, larger RRSP or TFSA withdrawals, rental income, or lower fixed costs abroad.
Don’t leave this to chance. A small planning decision now can protect tens of thousands of dollars over retirement.
Getting OAS right while living abroad can be surprisingly complex. Whether you’re five years or five months from leaving Canada, the good news is this is fixable with the right planning.
At Blueprint Financial, we help Canadians retire abroad without accidentally losing benefits they’ve spent decades earning. To stay informed as you plan, you can sign up for our free financial newsletter for practical insights on OAS, CPP, residency rules, and cross-border retirement strategies.
If you’d like personalized guidance, explore our financial planning services to see how we help Canadians structure their move, protect benefits, and retire with confidence—wherever life takes them.
Planning ahead is the difference between keeping your benefits and losing them.
