GIS in Canada: The Guaranteed Income Supplement, Explained (2026)

By Jordan Ellis · Published August 16, 2026 · Reviewed September 14, 2026

Quick Answer

The Guaranteed Income Supplement (GIS) pays low-income OAS recipients up to $1,123.17/month (single, July to September 2026, indexed quarterly) — completely tax-free. It's reduced 50 cents per dollar of other income, so a single senior with zero income beyond OAS gets the maximum, while every RRSP/RRIF dollar withdrawn cuts GIS in half — making TFSAs the critical account for lower-income retirees.

GIS is the least-understood major benefit in the Canadian retirement system — and for lower-income seniors, it’s worth more than OAS itself.

The basics

If you’re 65+, receiving OAS, and your other income is low, GIS tops you up to a livable floor — up to $1,123.17/month tax-free for singles (July to September 2026). Combined with full OAS ($751.97), that’s a guaranteed ~$1,875/month with zero personal savings. Estimate your OAS side with the CPP & OAS calculator.

The 50-cent rule

GIS falls 50 cents for every dollar of income above the exemptions (excluding OAS itself). First $5,000 of employment income is fully exempt, the next $10,000 at half — working a little doesn’t kill it. But pension income, RRSP/RRIF withdrawals, and investment income count dollar-for-dollar into the clawback.

Why the RRSP is a trap for future GIS recipients

Here’s the math nobody shows at the bank: a retiree receiving GIS who withdraws $1,000 from a RRIF loses $500 of GIS plus regular income tax on the withdrawal — an effective marginal rate north of 70%. The same retiree with a TFSA withdraws $1,000 and loses nothing. For households that will plausibly qualify for GIS, the RRSP vs TFSA decision isn’t close: TFSA first, RRSP maybe never.

The rules that keep money on the table

File taxes every year, even with zero income. GIS renews automatically from your return; no return, no GIS.
Don’t delay OAS past 65 if you’ll qualify for GIS. The usual “wait for +36%” logic backfires — GIS eligibility doesn’t start until OAS does, and GIS recipients gain little from deferral.
Couples: check the Allowance. If one spouse is 60–64 and combined income is low (~~$40k or less), the younger spouse can receive the Allowance (~~$1,400/month max) until they hit 65.
Sponsored immigrants face a 10-year residency wrinkle — partial OAS affects GIS differently; get advice before assuming.

The planning takeaway

GIS flips conventional retirement advice on its head. For higher earners, RRSPs and delaying OAS are the play. For those who’ll land in GIS territory, the strategy is: TFSA savings only, take OAS and GIS at 65, and keep taxable income near zero. Estimate the government-benefit floor for your situation with the CPP & OAS calculator — then decide which account deserves your next dollar.

Official sources

Rules and dollar limits change. Confirm current amounts with the official pages below before you act · Last reviewed September 14, 2026.

Guaranteed Income Supplement (Employment and Social Development Canada)
OAS pension recovery tax (clawback) (Employment and Social Development Canada)

Frequently Asked Questions

Who qualifies for GIS in Canada?

You must be 65+, receiving OAS, and have low income: for a single senior, full GIS phases out around $22,000 of annual income excluding OAS; for couples, combined-income thresholds are higher. You must also file a tax return every year — GIS is reassessed annually off your return.

How much is GIS per month in 2026?

$1,123.17/month maximum for a single OAS recipient in July to September 2026 (amounts are indexed quarterly). Couples where both receive OAS get up to $676.09 each. Amounts step down 50 cents per dollar of other income — employment income gets an exemption on the first $5,000 and 50% on the next $10,000.

Is GIS taxable?

No — GIS is completely tax-free and doesn't count as income for most other benefits. But it must be renewed annually via your tax return; skip filing and payments stop, even if your income is zero.

Do RRSP withdrawals affect GIS?

Yes, brutally: RRSP/RRIF withdrawals count as income and claw back GIS at 50 cents per dollar — combined with regular income tax, low-income retirees can face effective rates above 70%. TFSA withdrawals don't count at all, which is why TFSA-first saving is the standard advice for anyone likely to receive GIS.

How do I apply for GIS?

Many new OAS recipients are auto-enrolled, but if you aren't contacted, apply through My Service Canada Account or with form ISP-3025. File your taxes every year to keep it — and apply for the Allowance if your spouse is 60–64 and your combined income is low.