Does ATO debt expire?

Why ATO debt does not expire

Most ordinary debts, like an unpaid invoice or a personal loan, have a limitation period under state law. Once enough years pass without payment or acknowledgement, the creditor loses the right to sue. Tax is different. A tax debt is a debt to the Commonwealth, and the law places no limitation period on the ATO recovering it. Our page on the statute of limitations on ATO debt covers the details.

Interest does not expire either. The general interest charge (GIC) is currently 11.43% p.a., compounding daily, and it accrues on an unpaid debt unless the ATO remits it. A debt that was $8,000 a decade ago can be far larger now, and interest incurred from 1 July 2025 is no longer tax deductible.

What happens to old debt instead

When the ATO decides a debt is not cost effective to collect, it can put the debt on hold. The ATO calls this non-pursuit. It stops calling and writing, and for years it left the amount out of the account balance you see online. The debt stayed legally payable the whole time, and any tax refund or credit was still used to pay it down. Our guide to what a debt on hold is explains the mechanics.

Since August 2025 the ATO has been progressively adding debts placed on hold from 1 January 2017 onwards back into account balances. People with a debt of $100 or more get a letter first. GIC is remitted for 6 months after the debt is added, then starts again. Debts placed on hold before 1 January 2017 are on a different track: the ATO has paused collection and refund offsets on those while the government's proposed law change, which would let the Commissioner choose not to offset refunds against them, works through.

Ways an old ATO debt can actually end

A debt does not disappear with time, but there are real ways it can be reduced or finished.

• Paying it, in full or through a payment plan, which can be set up online for debts up to $200,000.
• Correcting it. Old debts sometimes rest on a default assessment or a lodgement error. If the amount is wrong, lodging the missing return or disputing the assessment can shrink or remove it.
• Interest remission. The original tax usually stands, but the ATO can remit GIC where there is a fair reason. On an old debt, interest is often the biggest part.
• Serious hardship release, for individuals and sole traders with income tax debt, not GST or PAYG withholding.
• Bankruptcy or liquidation. Personal tax debt is generally released on discharge from bankruptcy, and a company's debt ends with the company, subject to director penalty rules.

None of these happen by waiting. The ATO's forgiveness options all need an application or a formal process.

What to do next

1. Log in to ATO online services and check every account, filtering transactions from 01/01/2000 and searching for the word non-pursuit, so you know whether an old debt exists.
2. If a debt has been added back to your balance, note the date on the letter: the 6 months of GIC remission runs from the day it was included.
3. Before paying, ask the ATO which period the debt relates to and how it was calculated, then decide whether to pay, dispute, or set up a plan.

More questions: 8 Old debts and time limits questions answered · Full guide: Old ATO debts resurfacing