Sorting out CPP vs OAS vs GIS is one of the most common sources of confusion for seniors across the Greater Toronto Area. The three programs sound similar, the acronyms blur together, and many retirees only start digging into the details once retirement is around the corner or a tax slip arrives with surprises. If you’re approaching 65, helping a parent plan their next chapter, or already collecting one of these benefits, knowing how each program works and how they affect each other can mean the difference between a comfortable retirement and one that feels uncomfortably tight.
This guide breaks down the Canada Pension Plan (CPP), Old Age Security (OAS), and the Guaranteed Income Supplement (GIS) in plain language. You’ll learn who qualifies for each, how much you can receive in 2026, when to start, and how to avoid the common tax traps that catch seniors off guard. Long-term clients often tell us that having an accountant who explains complex retirement rules in everyday language is what made the planning feel manageable in the first place.
What Are CPP, OAS, and GIS?
These three federal programs make up the foundation of public retirement income for most Canadians. They look similar from a distance, but they’re funded, calculated, and taxed in very different ways.
Canada Pension Plan (CPP)
CPP is a contributory pension. You and your employer paid into it during your working years (self-employed Canadians paid both portions), and the amount you receive in retirement reflects how much you contributed and for how long. According to the Government of Canada’s CPP guidelines, CPP is taxable, adjusted for inflation each January, and you can start it as early as 60 or as late as 70.
If you’ve never worked, or only worked briefly in Canada, your CPP will be small or zero. The other two programs may still apply. CPP also includes a survivor benefit for your spouse or common-law partner, a children’s benefit for dependents, and a one-time death benefit of $2,500 paid to your estate.
Old Age Security (OAS)
OAS works on a completely different principle. It’s funded from general tax revenue and based on residency, not work history. Most seniors who have lived in Canada for at least 10 years after age 18 qualify at 65, even if they never earned a paycheque. OAS is taxable, and payment amounts are reviewed quarterly based on the Consumer Price Index. Seniors aged 75 and over receive a permanent 10% top-up that was added in July 2022.
Guaranteed Income Supplement (GIS)
GIS is a non-taxable monthly top-up for low-income seniors who already receive OAS. It exists to keep retirees with little or no other income above a basic standard of living. GIS doesn’t depend on contributions or work history. Eligibility is based entirely on your previous year’s income, which is one reason filing your personal income tax return on time matters once you’re collecting it.
You don’t need to apply for GIS separately. When you apply for OAS, Service Canada automatically reviews whether you qualify. The amount is recalculated each July using the income you reported on your previous year’s return. If you skip filing, your GIS payments can be paused or stopped entirely.
CPP vs OAS vs GIS: Key Differences at a Glance
Here’s how the three programs stack up side by side:
| Feature | CPP | OAS | GIS |
| Based on | Work contributions | Canadian residency | Income level (must already get OAS) |
| Start age | 60 to 70 | 65 (can defer to 70) | 65 |
| Taxable? | Yes | Yes | No |
| Subject to clawback? | No | Yes, above an income threshold | Phased out as income rises |
| Funded by | CPP contributions | General tax revenue | General tax revenue |
The takeaway: CPP is income you earned, OAS is income you qualify for by living in Canada long enough, and GIS is targeted help for seniors who need extra support. Most Canadian seniors qualify for some combination of all three.
CPP vs OAS vs GIS in 2026: How Much Can You Receive?
The maximum payment amounts look generous on paper, but most retirees receive considerably less than the headline numbers.
CPP Payments
For 2026, the maximum CPP retirement pension at age 65 sits at roughly $1,433 per month, but very few people receive that amount. To qualify, you need to have contributed at or near the maximum every year for close to four decades. The average new CPP recipient typically receives closer to $800 per month. Your actual amount depends on your contribution history, which you can check through your My Service Canada Account.
OAS Payments
OAS amounts are split by age. Seniors aged 65 to 74 receive approximately $740 per month at the maximum, while those 75 and older receive about $814 thanks to the 10% age-based increase. These figures adjust slightly each quarter based on inflation, as confirmed in the most recent CPP and OAS quarterly report.
GIS Amounts
The maximum monthly GIS for a single senior is around $1,108 in 2026, but the amount drops as your other income rises. For a single senior, GIS is fully phased out once annual income (excluding OAS) reaches roughly $22,488. For couples where both partners receive OAS, the combined income cutoff sits closer to $29,712. These thresholds are reviewed quarterly and indexed to the cost of living.
Can You Collect CPP, OAS, and GIS Together?
Yes, you can receive all three at the same time if you meet the eligibility rules for each. The catch is that your CPP and other taxable income directly affect how much GIS you receive.
How CPP and Other Income Reduce Your GIS
GIS is income-tested. For every dollar of taxable income above the small allowable thresholds, your GIS is generally reduced by 50 cents. That includes CPP, workplace pensions, RRSP and RRIF withdrawals, and investment income. According to CIBC’s retirement income guide, GIS does not increase if you delay your OAS, so deferring OAS purely to boost GIS is not a strategy that works.
This is where the order of withdrawals matters. Money pulled from a TFSA does not count as income, so it doesn’t reduce GIS. Money pulled from an RRSP or RRIF does count, and it can erode your GIS dollar by dollar.
The Earnings Exemption Rule
If you’re still working part time while receiving GIS, you get a break. The first $5,000 of employment or self-employment income is fully exempt from the GIS calculation, and only 50% of the next $10,000 counts as income. That means you can earn up to $15,000 in a year while only $5,000 of it counts against your benefit.
When Should You Start Receiving CPP and OAS?
This is the question that comes up in nearly every retirement conversation, and there’s no universal answer. Your health, other income sources, and tax picture all play a role. Working through the timing with retirement tax planning before you commit can save thousands over your lifetime.
Taking CPP Early at 60 vs Delaying to 70
Starting CPP at 60 reduces your monthly payment by 0.6% for every month you take it before 65, which works out to a permanent 36% cut if you start at the earliest age. Delaying past 65 increases your payment by 0.7% per month, capping at a 42% boost if you wait until 70.
The break-even age between starting at 60 and starting at 65 lands around age 74. Between 65 and 70, the break-even shifts to about age 82 or 83. If you’re in good health and have other income sources to bridge the gap, deferring usually pays off. If your health is compromised or you need the cash now, taking CPP early often makes more sense.
When Deferring OAS Makes Sense
You can also delay OAS up to age 70 for a 0.6% monthly increase, or 36% total. Deferring OAS is most useful when your income at 65 is high enough to trigger the clawback. Pushing OAS to a year when your income has dropped (after RRSP melt-down, for example) lets you keep the full payment instead of handing part of it back to the CRA.
One important caveat: if you defer OAS, you cannot receive GIS during the deferral period. So OAS deferral makes sense for higher-income retirees but rarely for seniors who would otherwise qualify for GIS. The math also works differently than CPP. OAS is not wage-indexed during deferral and it doesn’t include a survivor benefit, so the case for waiting is generally weaker than the case for deferring CPP.
How Do You Avoid the OAS Clawback?
The OAS clawback, officially called the OAS recovery tax, is one of the most misunderstood parts of Canada’s retirement system. Many seniors only find out about it after a chunk of their OAS disappears.
The 2026 Recovery Tax Thresholds
The clawback kicks in once your net annual income exceeds a set threshold. According to Wealthsimple’s clawback breakdown, for OAS payments received between July 2026 and June 2027, the threshold is $93,454 (based on 2025 income). For every dollar above that line, the CRA recovers 15 cents of your OAS.
Edward Jones notes that the full clawback point for that period sits at $152,062 for ages 65 to 74 and $157,923 for those 75 and older. If your income hits those upper limits, your entire OAS is recovered. The official CRA guidance on the recovery tax confirms the calculation works on a one-year lag, so a high-income year shows up in your OAS the following July.
Tax-Smart Income Strategies
There are several ways to keep your net income below the threshold:
- Hold growth investments inside a TFSA whenever possible. TFSA withdrawals are not counted as income for clawback or GIS purposes.
- Split eligible pension income with your spouse after age 65 to balance both partners’ incomes and reduce the higher earner’s exposure.
- Spread large capital gains across multiple tax years instead of triggering them all at once. Selling a rental property, a cottage, or a non-registered investment portfolio in a single year can spike your income enough to wipe out an entire year of OAS.
- Time RRSP and RRIF withdrawals carefully to avoid pushing yourself over the threshold in any single year. A drawdown plan that uses your TFSA, non-registered accounts, and RRIF in the right order can protect your full benefit.
Clients who work with us on both personal and corporate taxes often note the proactive advice they receive on managing retirement income, particularly around finding ways to keep more of their OAS and reduce the overall tax bill before filing season arrives.
Ready to Make Sense of Your Retirement Benefits in the GTA?
The three pillars of Canadian retirement income, CPP, OAS, and GIS, work best when you understand how they fit together. Layer in Ontario-specific support like the Guaranteed Annual Income System (GAINS), which adds up to $90 per month for low-income Ontario seniors who already receive OAS and GIS, and the picture starts to feel manageable. The right timing on when to claim, where to draw your savings from, and how to keep your income below the clawback line can mean thousands of extra dollars staying in your pocket each year.
If you’re a senior, soon-to-be retiree, or family member helping a parent in Toronto, Mississauga, Vaughan, Brampton, Markham, or anywhere else in the GTA, our team at Simplified Accounting offers personal tax services for GTA residents and full accounting and tax services across the Greater Toronto Area. Book a free consultation today and let’s map out your retirement income plan together.