Planning for retirement in Canada means more than just building savings — it also requires careful tax planning to protect key government benefits like Old Age Security (OAS). A single oversight can lead to an OAS clawback, which can cost retirees thousands of dollars each year.
This detailed guide explains how one Canadian retiree lost $20,000 in OAS payments because of a common tax mistake, and how using a Tax-Free Savings Account (TFSA) could have prevented it.
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The OAS Clawback: What It Is and How It Works
The OAS pension provides a monthly payment to Canadians aged 65 and older. But once your income crosses a certain threshold, the government begins to “claw back” part of those payments through what’s officially called the OAS Recovery Tax.
- Clawback Threshold for 2025: $90,997 net income
- Clawback Rate: 15% of every dollar above the threshold
- Full OAS Loss: At roughly $148,000 net income (for ages 65–74) or $154,000 (for ages 75+), your OAS is completely clawed back.
This means that if your annual income is too high—whether from employment, investments, or RRSP withdrawals—you could lose some or all of your OAS benefits.
How One Retiree Lost $20,000 in OAS
Consider Robert, a 68-year-old retiree in Ontario. He carefully saved for decades and had $650,000 in his RRSP, which he converted into a Registered Retirement Income Fund (RRIF) at age 65.
But Robert made a critical mistake:
- He withdrew a large lump sum of $50,000 from his RRIF in 2024 to pay for a home renovation.
- That extra income pushed his total net income for the year to $125,000, well over the OAS clawback threshold.
- As a result, the government reduced his OAS payments by 15% of the excess amount.
The Costly Result
- Amount over the clawback threshold: $125,000 – $90,997 = $34,003
- Clawback rate: 15%
- OAS lost for the year: 34,003 × 0.15 = $5,100
Because Robert took a similar lump sum withdrawal again the following year, he lost over $10,000 in two years. Factoring in the ongoing impact of higher taxable income, including higher taxes on other income sources, his total loss reached $20,000 in OAS and tax penalties over just a few years.
Why the TFSA Could Have Saved Him
The Tax-Free Savings Account (TFSA) is one of the most powerful tools to avoid OAS clawbacks. Here’s why:
- TFSA Withdrawals Don’t Count as Income
- Money you take out of a TFSA is tax-free and not included in the net income calculation used for OAS.
- If Robert had saved part of his funds in a TFSA and withdrawn from there, his net income would have stayed below the clawback threshold.
- Flexible Contributions and Growth
- Canadians 18+ can contribute up to $7,000 for 2025, with total cumulative room of $95,000 (if eligible since 2009).
- Investments inside a TFSA—whether stocks, ETFs, or bonds—grow tax-free, meaning higher long-term savings without triggering OAS clawbacks.
- Ideal for Large Expenses
- For big purchases like home renovations or vacations, using a TFSA prevents an unexpected tax hit that can reduce OAS.
Other Strategies to Avoid OAS Clawbacks
While the TFSA is a key tool, here are additional ways to protect your OAS:
1. Split Pension Income
- Couples can shift up to 50% of eligible pension income to the lower-income spouse to reduce the higher earner’s net income.
2. Delay OAS
- You can delay OAS until age 70 and receive up to 36% more monthly. If you expect high income in your late 60s, deferring OAS can reduce clawback exposure.
3. RRSP/RRIF Withdrawal Planning
- Start gradual RRSP withdrawals in your early 60s, before OAS begins, to reduce large mandatory RRIF withdrawals later.
4. Consider Charitable Donations or Medical Expense Deductions
- These tax credits lower net income and may help you stay below the OAS clawback threshold.
Key Lessons for Retirees
Robert’s story is a cautionary tale for all Canadians approaching retirement:
- Understand the OAS clawback rules. Even modest income above the threshold can cost thousands.
- Plan withdrawals early. Strategically draw down RRSPs before age 65 to avoid large RRIF minimums.
- Use a TFSA as a safety valve. Tax-free withdrawals give flexibility for big expenses without risking government benefits.
The OAS clawback is often overlooked until it’s too late. For Robert, a simple financial move—using a TFSA for his renovation—could have saved $20,000 in lost OAS benefits and taxes.
If you’re planning retirement, don’t wait. Review your income sources now, consider maximizing TFSA contributions, and work with a financial advisor to build a withdrawal strategy that keeps your government pension intact.
A little planning today can mean thousands of dollars more in your pocket throughout retirement.