The Guaranteed Income Supplement (GIS) provides tax-free monthly payments to low-income seniors who receive Old Age Security (OAS). But GIS is income-tested — if your income exceeds certain thresholds, your payments are reduced dollar-for-dollar and can drop to zero.
For many seniors, a single RRSP withdrawal, pension payout, or part-time job can push income over the limit and trigger a surprise GIS clawback. Here is how the income test works, what triggers it, and how to structure your finances to keep as much GIS as possible.
How GIS income testing works
GIS is calculated based on your (or your household’s) net income from the previous calendar year, excluding OAS itself. Payments are recalculated each July.
| Status | Income Used | GIS Eliminated At (Approximate, 2024-2025) |
|---|---|---|
| Single, widowed, or divorced | Your net income (Line 23600) minus OAS | ~$21,624 |
| Couple, both receiving OAS | Combined net income minus both OAS | ~$28,560 |
| Couple, only one receives OAS | Combined net income minus OAS | ~$51,840 |
Note: These thresholds are updated annually and vary based on OAS pension amount and GIS rate tables. Check the Service Canada GIS tables for exact current figures.
The GIS clawback rate
GIS uses a 50% to 75% effective clawback rate depending on income type and level:
| Income Range | Effective Clawback Rate | What It Means |
|---|---|---|
| First $5,000 of employment/self-employment income | 0% (fully exempt) | No GIS reduction |
| Next $10,000 of employment income ($5,001–$15,000) | 25% (50% exemption) | GIS reduced by $0.25 per $1 |
| Other income (pensions, RRSP, investment income) | 50% | GIS reduced by $0.50 per $1 |
| Higher income ranges | Up to 75% for some income sources | Combined federal/provincial benefit clawback |
This means every extra $1,000 of RRSP withdrawal costs you approximately $500 in lost GIS — on top of the income tax on the withdrawal. When you add the GIS clawback to your marginal tax rate, the effective rate for a low-income senior making an RRSP withdrawal can exceed 70%.
Income sources: what counts and what does not
| Income Source | Counts Toward GIS? | Notes |
|---|---|---|
| OAS pension | No | Excluded from the GIS income test |
| GIS payments | No | Not counted as income |
| TFSA withdrawals | No | This is the key advantage of TFSA for seniors |
| CPP/QPP | Yes | Fully counted |
| RRSP/RRIF withdrawals | Yes | Fully counted — biggest GIS trap for seniors |
| Workplace pension | Yes | Fully counted |
| Employment income | Partially | First $5,000 exempt, next $10,000 at 50% |
| Self-employment income | Partially | Same exemption as employment income |
| Interest and dividends | Yes | Fully counted |
| Capital gains | Yes | Taxable portion (50%) counted |
| Rental income | Yes | Net rental income counted |
| Foreign pension | Yes | Fully counted |
| EI benefits | Yes | Fully counted |
Worked example: RRSP withdrawal triggers GIS loss
Maria is a single senior receiving full OAS ($727/month) and maximum GIS ($1,065/month). Her only other income is CPP of $800/month ($9,600/year). She withdraws $12,000 from her RRSP to pay for home repairs.
Before the RRSP withdrawal:
| Item | Annual Amount |
|---|---|
| CPP income | $9,600 |
| GIS income for calculation | $9,600 |
| GIS payment | ~$846/month (~$10,152/year) |
After the RRSP withdrawal:
| Item | Annual Amount |
|---|---|
| CPP income | $9,600 |
| RRSP withdrawal | $12,000 |
| GIS income for calculation | $21,600 |
| GIS payment | ~$12/month (~$144/year) |
| GIS lost | ~$834/month (~$10,008/year) |
The $12,000 RRSP withdrawal cost Maria approximately $10,000 in lost GIS for the entire following payment year (July to June). Add the income tax on the withdrawal (~$1,800 at the 15% bracket), and the true cost of accessing that $12,000 was almost $12,000 in combined tax and lost benefits. She essentially paid 100% of the withdrawal in penalties.
If Maria had a TFSA instead: The $12,000 TFSA withdrawal would not count as income, GIS would remain unchanged, and she would keep the full $10,000+ in benefits.
Strategies to protect GIS
1. Prioritize TFSA over RRSP before retirement
For Canadians who expect to be low-income in retirement (and therefore likely GIS-eligible), the TFSA is almost always a better savings vehicle than the RRSP. TFSA withdrawals are invisible to the GIS income test.
| Strategy | GIS Impact |
|---|---|
| Save in TFSA | No GIS reduction on withdrawal |
| Save in RRSP | Full GIS clawback (50%+) on withdrawal |
2. Melt down your RRSP before age 65
If you have RRSP savings and expect to qualify for GIS, consider withdrawing from your RRSP between ages 60 and 64 (before GIS eligibility at 65). You pay income tax on the withdrawals, but you avoid the GIS clawback that would apply after 65.
3. Convert RRSP to RRIF and take minimum withdrawals
Once you convert to a RRIF, you are required to withdraw a minimum amount each year. Keep withdrawals as close to the minimum as possible to minimize GIS impact.
| RRIF Age | Minimum Withdrawal % |
|---|---|
| 65 | 4.00% |
| 70 | 5.00% |
| 75 | 5.82% |
| 80 | 6.82% |
| 85 | 8.51% |
| 90 | 10.99% |
4. Split CPP with your spouse
If one spouse has significantly higher CPP than the other, pension sharing (assigning up to 50% of CPP to the lower-income spouse) can reduce the higher-income spouse’s GIS calculation and increase the household’s total GIS entitlement.
5. Time one-time income carefully
If you are selling an asset, receiving an inheritance, or getting a lump-sum payment, consider the timing. Income received in January affects GIS for the following July-to-June period. Deferring income to the year with the least GIS impact can save thousands.
How to request early GIS reassessment
If your income dropped due to retirement, job loss, or reduced pension, you do not have to wait until the next July recalculation.
- Complete Form ISP-3041 (Statement of Estimated Income After Retirement or Reduction in Retirement Income).
- Provide your estimated current-year income.
- Service Canada will recalculate your GIS based on the estimate.
- Payments can be adjusted within 1-2 months of the request.
This is particularly valuable if you had a one-time high-income year that reduced your GIS but your ongoing income is much lower.
What to do if GIS was reduced or suspended
- File your tax return on time. GIS cannot be calculated without your return — late filing delays payments.
- Check for errors. Review your Notice of Assessment to ensure income was reported correctly.
- Apply for reassessment if your current-year income is lower than last year’s.
- Contact Service Canada: 1-800-277-9914 if you believe your GIS was calculated incorrectly.
- Plan ahead. Work with a financial advisor to structure future withdrawals to minimize GIS clawback.
Related pages
- GIS Payment Dates — when payments arrive
- GIS Calculator — estimate your entitlement
- OAS Clawback — how OAS is also income-tested
- RRSP vs TFSA — which account to prioritize
- RRIF Minimum Withdrawal — required withdrawal rates