A tax return can show income that does not affect the Guaranteed Income Supplement (GIS) in exactly the way you might expect. GIS uses a specific definition of income, with exclusions for certain amounts and special treatment for employment and self-employment earnings. For couples, the calculation also looks at combined income rather than only the recipient’s income. For the 2026 GIS rules, your payment is generally based on income from the previous calendar year. Your marital status determines which income threshold and payment structure applies. Old Age Security (OAS) itself is excluded from GIS income, while sources such as Canada Pension Plan (CPP) benefits, private pensions, Registered Retirement Savings Plan (RRSP) withdrawals and investment income can count.
- GIS Is Usually Calculated From the Previous Year’s Income
- What Income Counts for GIS?
- OAS and Some Other Amounts Do Not Count
- Employment and Self-Employment Income Get a GIS Earnings Exemption
- Your Spouse’s or Partner’s Income Can Change the Calculation
- How Income Reduces Your GIS
- A Drop in Income Can Be Treated Differently
- Other Questions About Income and GIS
GIS Is Usually Calculated From the Previous Year’s Income
GIS operates on a July-to-June benefit cycle. Your entitlement is normally recalculated for each new cycle using income from the previous calendar year. That means income can affect your GIS later rather than changing the payment in the same month you receive it.
For example, the July 2026 to June 2027 GIS payment period is generally based on your 2025 income. The calculation starts broadly with income determined under the Income Tax Act and then applies the adjustments and exclusions established under the Old Age Security Act.
This annual calculation is one reason filing an income tax return matters even though GIS itself is not taxable. Your tax information gives the government much of the income data needed to reassess the benefit.
What Income Counts for GIS?
Many common sources of retirement income count when GIS is calculated. These include CPP or Quebec Pension Plan (QPP) benefits, private and workplace pensions, RRSP withdrawals, Registered Retirement Income Fund (RRIF) withdrawals, Employment Insurance benefits, interest, taxable Canadian dividends, capital gains, net rental income and other taxable income that is not specifically excluded.
That can make withdrawals from retirement accounts more consequential for a GIS recipient than the income tax alone suggests. A taxable RRIF withdrawal, for example, can form part of the income used for GIS purposes. The same principle applies when money is withdrawn from an RRSP.
Employment and self-employment income also enter the calculation, but they receive special treatment under the GIS earnings exemption. They should not simply be treated like pension or investment income.
OAS and Some Other Amounts Do Not Count
Your OAS pension is excluded when income is calculated for GIS. GIS, the Allowance and the Allowance for the Survivor are also excluded. This matters because someone whose only income is OAS can still qualify for the maximum GIS amount applicable to their circumstances.
Other exclusions include lottery winnings, inheritances and money withdrawn from a Tax-Free Savings Account (TFSA). Certain government benefits, credits, rebates, social assistance payments and specified compensation or pension payments are also excluded under the applicable rules.
The TFSA treatment is particularly useful to understand. A TFSA withdrawal does not become taxable income and does not count as GIS income simply because you took money out. An RRSP withdrawal generally does. Two seniors withdrawing the same amount of cash from those two account types can therefore have different GIS consequences.
Employment and Self-Employment Income Get a GIS Earnings Exemption
The 2026 GIS earnings exemption allows the first $5,000 of annual employment and self-employment earnings to be excluded from the GIS calculation. For the next $10,000 of earnings, 50% is exempt. The current exemption has applied to both employment and self-employment income since July 2020.
Consider $12,000 of qualifying work earnings. The first $5,000 is fully exempt. Of the remaining $7,000, half is exempt, so another $3,500 is removed from the GIS calculation. In this example, $3,500 of the $12,000 is left to be considered after applying those earnings exemptions. The calculation can also involve applicable Canada Pension Plan or Quebec Pension Plan contributions and Employment Insurance premiums under the statutory definition of GIS income.
We think this rule is worth separating from the rest of the GIS calculation because saying that “income reduces GIS” is too broad. Working income receives treatment that pension, RRSP and investment income do not receive.
Your Spouse’s or Partner’s Income Can Change the Calculation
For a single, divorced or widowed person, GIS is determined using that person’s income. If you are married or living common-law, the calculation generally uses the couple’s combined annual income.
Your payment category also depends on whether your spouse or common-law partner receives OAS, receives the Allowance, or receives neither. Those situations have different income thresholds and maximum GIS payments. The current amounts can be checked against the 2026 GIS payment tables.
This is why comparing your GIS payment with another person’s payment can be misleading even when your personal incomes look similar. Household circumstances form part of the calculation. Our breakdown of how much GIS you can receive covers the current payment amounts and thresholds separately.
How Income Reduces Your GIS
A person with no income other than OAS can receive the maximum GIS available for their category. From there, GIS is generally reduced as other countable income rises. For many recipients, the general reduction is $1 of GIS for every $2 of other income, although the precise calculation varies with marital status, income type and the applicable payment table.
The official GIS payment tables therefore matter more than applying a single reduction percentage to every situation. They incorporate the recipient’s marital category and income level. If you want to test an income amount without working through those tables manually, our GIS calculator provides an estimate.
Your eligibility also ends once countable income reaches the applicable limit for your situation. Those thresholds can change, so they should not be treated as permanent numbers. We cover the qualification rules separately in who is eligible for GIS.
A Drop in Income Can Be Treated Differently
Using last year’s income can produce an unrealistic result when someone has just retired or experienced a reduction or termination of pension income. The rules allow an estimated current-year income to be used in specified circumstances instead of simply continuing to rely on the previous year’s higher amount.
For example, someone who stopped working after the income year used for the normal calculation may be able to have the benefit reconsidered using estimated income. The Old Age Security Act provides for estimated-income statements when employment, self-employment or certain pension income stops or decreases.
We would contact Service Canada rather than wait for the next automatic annual recalculation when one of those changes occurs. Otherwise, an older income figure may continue to determine the payment even though it no longer reflects the person’s current circumstances.
Other Questions About Income and GIS
Do savings in a bank account reduce GIS?
The amount sitting in a savings account is not itself income merely because you own the money. Interest earned on those savings can count as income, however.
Does selling an investment affect GIS?
A taxable capital gain can form part of the income used for GIS. The amount of cash received from selling an asset and the taxable income produced by the sale are not necessarily the same thing.
Do RRSP contributions affect the income used for GIS?
The GIS definition of income begins with income calculated under the Income Tax Act and makes additional statutory adjustments. An RRSP deduction can therefore affect the income figure used in the calculation. The result is different from an RRSP withdrawal, which can increase income.
Can GIS change even when my income stays the same?
GIS maximum payments are reviewed quarterly in January, April, July and October to reflect increases in the cost of living. The payment amounts do not decrease when the cost of living falls. Your individual payment can therefore change because the program’s payment rates are adjusted, even without a new source of income.
