T4A
T4A(OAS) — Statement of Old Age Security
Issued by: Service Canada Deadline: Mailed by Service Canada
What is this slip?
Reports Old Age Security pension payments and any tax withheld. You receive this if you collected OAS during the year.
Every box explained
| Box | Label | Where it goes on your T1 |
|---|---|---|
| 18 | Old Age Security pension Total OAS payments received during the year. Goes to: Line 11300 of your T1 | Line 11300 of your T1 |
| 21 | OAS recovery tax If your income exceeded the OAS clawback threshold, this is the recovery tax withheld directly from your payments. Goes to: Deducted on Line 23500 of your T1 | Deducted on Line 23500 of your T1 |
| 22 | Income tax deducted Voluntary income tax withheld from your OAS at source. Goes to: Line 43700 of your T1 | Line 43700 of your T1 |
| 25 | Retroactive OAS payments OAS arrears paid as a lump sum, potentially eligible for a tax averaging provision. Goes to: Schedule J / Line 11300 | Schedule J / Line 11300 |
Quick tips
- You can view slips filed by your employer or payer in CRA My Account — usually within a few days of the February 28 deadline.
- If you received this slip but haven't filed your return, the income is still taxable. File using your own records if the slip is late.
- Keep your slips for at least 6 years — CRA can reassess that far back.
Calculate your tax with these numbers
Put your slip amounts into our income tax calculator to see your full federal + provincial breakdown.
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