When the deposit doesn't match the letter

A letter says one number. The bank says another. Neither is obviously wrong, and there is nothing on the bank statement to explain the difference — just a credit, a date and the word “Canada”.

This is among the most common reasons people phone Service Canada, and in the large majority of cases nothing has gone wrong at all. Four ordinary mechanisms account for nearly every mismatch, and you can usually work out which one applies in about ten minutes.

Start by identifying what the deposit contains

Before comparing anything, establish what you are comparing. A single monthly credit from the federal government can contain more than one benefit, because Canada Pension Plan and Old Age Security are paid on the same dates.

If you receive both, the figure in your account may be CPP plus OAS, and possibly plus the Guaranteed Income Supplement. Comparing that total against a CPP statement will never reconcile, no matter how carefully you do the arithmetic — and this is the single most frequent cause of the confusion.

Reason one: two benefits arriving as one credit

The fix is to stop using the bank statement as the source of truth and use the payment record instead. My Service Canada Account shows CPP payment details for the current year and the previous two years, and OAS separately. Those records distinguish what the bank combines.

The same distinction appears on your tax slips, which arrive early each year: a T4A(P) for CPP and a T4A(OAS) for Old Age Security, as two separate documents with two separate amounts.

Reason two: tax you asked to have deducted

Benefit statements generally quote a gross monthly entitlement. If you have asked Service Canada to deduct federal income tax from your payments, the deposit is net of that deduction and will be lower.

Because the deduction is voluntary and requested once — sometimes years earlier, sometimes on a form someone else helped fill in — plenty of people genuinely do not remember whether they have one in place. The quickest way to check is last year’s T4A slips, which show tax deducted as its own figure. More on the mechanics in the tax bill that surprises people in their first year of CPP.

Reason three: the OAS recovery tax

If your income is above the published threshold, part of your Old Age Security is recovered, and it is collected as a monthly reduction to the OAS payment over the July-to-June period following the income year.

Two features make this especially confusing. The reduction is based on income from a year that has already finished, so it can start when nothing about your current circumstances has changed. And it appears as a smaller OAS payment rather than as a separate charge, so there is no line item saying what happened. The mechanism is set out in how the OAS recovery tax quietly takes some of it back.

Reason four: an adjustment or an amount in arrears

Occasionally a deposit is larger or smaller than the ongoing figure because it is not purely a monthly payment:

• Retroactive payments. A benefit granted with an earlier start date can bring arrears, sometimes in the first payment, sometimes separately.
• A recalculation. A revised contribution record, a credit split, an approved child-rearing provision or a change in marital status can all alter the ongoing amount.
• GIS recalculated from your tax return. The Guaranteed Income Supplement is income-tested and reassessed annually, so a July payment can differ from a June one even though CPP and OAS did not change.
• Recovery of an earlier overpayment, which is generally notified in writing beforehand.

A reconciliation that actually works

Rather than comparing two numbers and hoping, build the deposit up from its parts. On illustrative figures:

Building up one month’s deposit

CPP retirement pension, gross$912.00

OAS pension, gross$762.50

Less OAS recovery tax withheld this period−$82.00

Less voluntary federal tax deduction on CPP−$91.20

Expected credit to the account$1,501.30

Illustrative arithmetic to demonstrate the method. The CPP and recovery-tax figures are invented; the OAS amount is the published 2026 maximum for ages 65 to 74 and will not be most people’s. Use your own payment record for the real numbers.

Set out that way, a mismatch becomes a specific question — which line is wrong — rather than a vague sense that the amount is off. In practice the answer is usually that one of the lines was missing from the mental arithmetic rather than that any figure is incorrect.

When it is worth calling

Four situations justify picking up the phone, after you have done the reconciliation above:

1. The payment record itself — not the bank statement — shows an amount you cannot account for.
2. A payment is missing entirely, and five to ten business days have passed since the published payment date, which is the waiting period Service Canada asks for.
3. The amount changed and no letter arrived. Material changes are normally notified.
4. Your circumstances changed — a bereavement, a separation, a move abroad — and you are not sure the record reflects it.

Have the payment record open when you call, and the specific month and figure you are asking about. It converts a long call into a short one.

The habit worth having

Once a year, in February when the tax slips arrive, compare the slips against twelve months of bank credits. It takes twenty minutes, it catches the rare genuine error while the records are still fresh, and it means that when a deposit does look odd in some random month, you already know what the deposit is supposed to consist of.

Candy On Bone is published by SPV Consulting Estonia OÜ and provides general information about Canadian public pensions and taxes. It is not a Government of Canada, Service Canada or Canada Revenue Agency publication and has no affiliation with them. Nothing here is financial, tax or legal advice, and no figure in this article is a promise, quotation or entitlement for any individual reader. Benefit amounts and tax rules depend on personal circumstances and change over time; the figures cited were taken from the official sources listed above on 19 October 2026. There is no application, registration or fee on this website for any government benefit. Never give your Social Insurance Number, banking details or government account credentials to a website in response to an article. Use My Service Canada Account or contact Service Canada for anything concerning your own payments.

Next in the series · Part 4

The tax bill that surprises people in their first year of CPP