Why the GIS depends on filing a tax return every year

Dear reader,

People who receive the Guaranteed Income Supplement are often surprised to learn that there is no annual GIS application. There is something that does the same job, though, and it is easy to overlook in a year when nothing seems to have changed: the income tax return.

Service Canada’s page for GIS recipients puts it plainly. Each year, the benefit is reviewed using your federal tax return, and you must file your taxes by April 30 every year to avoid any disruption of payments.¹ This letter explains why the supplement works that way, what the July letter says, and what to do if a return cannot be filed.

Why the supplement needs a return

Old Age Security is based on age and residence. The GIS is different: it is an income-tested supplement for OAS pensioners with low income, and the amount depends on income and marital status. For October to December 2026, the maximum is $1,138.90 a month for a single, widowed or divorced pensioner with annual income below $23,112, and $685.56 for a pensioner whose spouse or partner receives the full OAS, with combined income below $30,528.²

Because the amount is tied to income, Service Canada needs a new income figure every year. The simplest source is the return you file with the Canada Revenue Agency. That is why a pensioner with little income and nothing to pay may still need to file: the return is not about tax owed, it is about keeping the supplement going.

For couples, the figure that matters is combined income, so both partners’ returns count, including the partner who does not receive the GIS. A household where one spouse files every year and the other has stopped because “there is no income to report” is exactly the situation in which the July letter asks for more information.

The yearly cycle

How the renewal year runs · illustrative

When	What happens
February	T4A(OAS) and other slips arrive; box 21 of the OAS slip shows supplements paid
By April 30	You file the return for the previous year
Spring	The income on the return is passed on for the GIS review
July	A letter says the GIS is renewed, stopped, started or resumed, or that more information is needed
July to June	Payments at the new rate for the benefit year

Simplified outline based on Service Canada’s description of the GIS review. Amounts are also adjusted for the cost of living each quarter.

What the July letter tells you

According to Service Canada, the July letter says whether your benefit is renewed (with the new amount), stopped, started or resumed, or whether more income information is needed.¹ It is the single most useful GIS document of the year, because it shows the income figure the new amount was based on. If that figure looks wrong, it is much easier to raise in July than months later.

If the letter never comes, the official advice is to call as soon as possible. A missing July letter is a signal, not something to wait out.

If the return is late, or cannot be filed

A late return does not cancel eligibility, but it can interrupt payments while Service Canada waits for the income figure. The government’s spring 2026 reminder warned that GIS payments may stop or be reduced for people who had not filed their 2025 taxes.³

A tax return is not the only way to report income. A federal briefing note on the GIS describes how, each July, Service Canada writes to recipients for whom no income information was received; the letter explains that ongoing entitlement cannot be determined without it and includes a form to report income directly, without filing a return. Income information can also be given to Service Canada by phone, by mail or in person.⁴ The exact form sent can change, so follow the instructions in the letter you actually receive.

Important

The renewal letter comes by post from Service Canada. Nobody legitimate will text you a link to “renew” the GIS or ask for a fee to file it. See the scam letters and texts that imitate Service Canada.

Other things that change the supplement

Because the GIS is income-tested and residence-based, a few other events matter too. Service Canada asks recipients to report changes in contact information, income and marital status as soon as possible.¹ And the GIS cannot be collected while you are outside Canada for more than six months, so a long winter abroad deserves a call before you go; the wider rules are in what changes for CPP and OAS when you move abroad.

One more link is easy to miss: there is no GIS without OAS. Someone who chooses to defer OAS gives up the supplement for the same months, which is why delaying OAS rarely suits anyone likely to qualify for it.

Who this matters for

• Every GIS recipient, including those with no tax to pay.
• Couples where one partner handles the paperwork, since each spouse’s income counts.
• Anyone whose income dropped this year, for example after a spouse’s death or the end of part-time work.
• Family members who file returns for a parent.

Free help exists. Many community organisations run volunteer tax clinics for people with modest, simple incomes through the CRA’s Community Volunteer Income Tax Program, which can make the April deadline less daunting.⁵

The takeaway

For a GIS recipient, the tax return is the renewal form. File it by April 30, look out for the July letter, check the income figure it used, and keep both together in the folder until the next July arrives.

P.S. The next letter goes out on Tuesday. If it does not reach you yet, the reply card is below.