Costa Rica Taxes for Canadians: What Happens to Your CPP and OAS

By Taraji Abroad · Move Abroad Rentals

Important: This article is educational — not tax or financial advice. Tax rules are complex and change frequently. Consult a qualified cross-border tax accountant before making any decisions about your tax residency or pension payments. Every situation is different.

The 10% Problem

A Canadian retiree collecting $2,000/month in combined CPP and OAS will take home roughly $200 less per month in Costa Rica than they would in Mexico or Portugal. That’s $2,400 per year — real money when you’re budgeting a retirement.

The reason is simple: no tax treaty. And it’s the one thing most “retire in Costa Rica” articles gloss over.

This post breaks down exactly how Canadian pension income is taxed when you live in Costa Rica, what Costa Rica’s territorial system actually means for your bottom line, and the one CRA provision that might lower your bill.

Two Countries, Two Tax Systems — and a Gap

What Costa Rica Does (Territorial Tax)

Costa Rica taxes only income earned inside Costa Rica. If you don’t work in Costa Rica and don’t have Costa Rican investments or rental income, you owe Costa Rica zero income tax. Your CPP, OAS, RRIF withdrawals, workplace pension, Canadian rental income, investment dividends — all untaxed by Costa Rica.

This is a genuine advantage and the main reason Costa Rica is attractive for retirees. In Mexico, if you become a tax resident (183+ days), your worldwide income is subject to Mexican tax (though the treaty prevents double taxation). In Costa Rica, there’s no worldwide taxation regardless of how long you stay.

What Canada Does (Non-Resident Withholding)

When you become a non-resident of Canada (by severing your residential ties — selling your home, closing accounts, informing CRA), Canada withholds tax at source on certain payments:

Income Source	Default Rate (No Treaty)	Treaty Rate (Mexico/Portugal)
CPP	25%	15%
OAS	25%	15%
RRSP/RRIF withdrawals	25%	15%
Workplace pension	25%	15%
Interest, dividends	25%	10–15%

The Gap

Canada and Costa Rica have a Tax Information Exchange Agreement (signed 2011) — this lets the two countries share tax data. But it is not a comprehensive tax treaty and does nothing to reduce withholding rates. You pay the default 25%.

Countries with comprehensive treaties — Mexico (15%), Portugal (15%), even Thailand (25% default but with specific pension article provisions) — have negotiated lower rates. Costa Rica hasn’t.

The Real-Dollar Impact

Let’s look at what this means for a typical Canadian retiree:

Scenario	Living in Costa Rica	Living in Mexico	Difference
CPP + OAS = $2,000/month	$1,500 (25% withheld)	$1,700 (15% withheld)	-$200/mo
+ RRIF = $800/month	$600 (25% withheld)	$680 (15% withheld)	-$80/mo
Total annual difference			-$3,360/year

On a $2,800/month total income, living in Costa Rica instead of Mexico costs you roughly $280/month in extra withholding. Whether that’s a dealbreaker depends on your priorities — Costa Rica offers proximity, safety, territorial tax, and the lowest retiree visa threshold. But the withholding gap is real and you should know about it before you commit.

Section 217: The Potential Offset

There is one CRA provision that might reduce your effective rate below 25%: the Section 217 election.

Here’s how it works: normally, non-residents pay the flat 25% withholding and that’s the end of it — no Canadian tax return needed. Section 217 lets you voluntarily file a Canadian tax return and be taxed at the regular graduated rates instead.

When Section 217 helps: If your total worldwide income is low enough that the graduated rates produce a lower tax bill than the flat 25%. The basic personal amount ($16,129 for 2026, subject to change) shelters the first chunk of income from tax entirely. For a retiree with modest pension income and no other sources, the effective rate can drop well below 25%.

When it doesn’t help: If your total income is high enough that the graduated rates equal or exceed 25%, the election offers no benefit. Roughly speaking, if your total income exceeds $60,000–$70,000 CAD, Section 217 likely doesn’t save you anything. But the exact math depends on your specific situation, deductions, and credits.

The catch: Filing under Section 217 requires reporting your worldwide income to CRA — even income Costa Rica doesn’t tax. This is a disclosure trade-off. You also need to file annually, which means ongoing compliance costs (accountant fees).

Bottom line: Section 217 is worth exploring with a cross-border tax accountant. It won’t eliminate the treaty gap entirely, but for retirees with modest income, it can narrow it significantly.

OAS-Specific Rules

Two OAS quirks to know about:

OAS portability requires 20+ years of Canadian residence. If you lived in Canada for 20 or more years after age 18, your OAS follows you anywhere in the world. Less than 20 years? OAS payments stop after 6 months abroad. This isn’t Costa Rica-specific — it applies everywhere.

OAS Recovery Tax (clawback). If your net income exceeds the threshold (~$90,997 for 2025, adjusted annually), you repay part of your OAS. Living in Mexico or Portugal, the tax treaty exempts you from the recovery tax. Living in Costa Rica? No treaty exemption — if your income is high enough, the clawback applies.

GIS — The Hard Stop

The Guaranteed Income Supplement (GIS) stops after 6 months outside Canada. No exceptions. No treaty overrides this. If GIS is part of your retirement income, Costa Rica (or any country) is a seasonal option only — not a permanent move.

What to Do

1. Run the numbers with a cross-border tax accountant. This is not optional. The interaction between non-resident withholding, Section 217, OAS clawback, and Costa Rica’s territorial system requires professional analysis specific to your income sources and amounts.
2. Don’t let the tax tail wag the dog. A $200/month withholding difference is meaningful — but if Costa Rica is where you want to be for lifestyle, safety, proximity, and community, the tax math alone shouldn’t stop you. It should inform your budget.
3. Keep your money transfer costs low. You’re already losing 25% to withholding — don’t lose another 3–5% to bank transfer fees. Wise uses the real exchange rate and charges $1–$5 per transfer. Full comparison here.
4. Read the visa guide. The Pensionado visa only requires $1,000 USD/month — the lowest in the Americas. The withholding is the trade-off for that accessibility.

Last updated April 2026. Tax rules change frequently and are highly situation-dependent. All rates, thresholds, and provisions should be verified with a qualified cross-border tax professional. This article is educational — not tax, financial, or legal advice.