GIS Decoded
Canada's Guaranteed Income Supplement, in plain English

GIS overpayments and appeals

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An overpayment is GIS money you received but were not entitled to — usually because income was higher than the figure used to calculate the payment, or because a change (a marriage, a move abroad, a return to work) was reported late. Overpayments are common, they are not a penalty, and they are fixable. What matters is acting quickly once you know about one.

How overpayments usually happen

Repayment, and hardship

Service Canada will tell you the amount and how it will be recovered. Recovery is normally by deduction from future benefits, in instalments, and the regulations require that the deduction not cause undue hardship — if the proposed deduction would leave you unable to meet basic needs, contact Service Canada and ask for a longer repayment period or a smaller deduction. In some cases Service Canada can remit (cancel) all or part of an overpayment, particularly where it resulted from its own administrative error or wrong advice: make that request in writing to the office that issued the decision, with the facts set out plainly. Ignoring an overpayment letter does not make it go away; it makes the deduction start without your input.

If you disagree with a decision: reconsideration, then appeal

If you disagree with a Service Canada decision about GIS — eligibility, amount, or an overpayment — first ask Service Canada to reconsider it. A different officer reviews the file, and you should send any documents that support your case. If the reconsideration decision still goes against you, you have 90 days from receiving it to appeal to the General Division of the Social Security Tribunal (SST). If the General Division decision goes against you, you have a further 90 days to ask the SST's Appeal Division for permission to appeal. Late appeals need a reasonable explanation, and the Tribunal cannot accept an appeal filed more than a year after the reconsideration decision. Keep every letter: the deadlines run from when you received the decision, not from when you first disagreed with it.

Do not confuse an overpayment with fraud. An overpayment caused by a late report or a wrong estimate is an administrative debt, and it is handled by repayment. Deliberately hiding income to obtain GIS is a different matter, and it can lead to penalties and prosecution. If you discover an error in your favour, report it yourself: voluntary disclosure is always treated better than discovery by audit.
General information only. This page explains the Guaranteed Income Supplement in plain English. It is not legal, financial, or tax advice, and it cannot decide whether you qualify. Only Service Canada can decide a claim. Rates and rules change over time — the figures here are for October to December 2026 unless another period is stated — so always confirm the current position with Service Canada or Canada.ca before you act on it. Contact: hello [at] tapetoolhq.com.