For a long time, moving overseas really was a HECS loophole: no Australian income, no repayment. That closed from 1 July 2017. If you have a study loan and move abroad, you're required to keep the ATO informed and to report your worldwide income each Australian financial year — and repayments are levied against the same thresholds as if you'd earned the money at home.
Two practical obligations follow. First, tell the ATO you're leaving — update your contact details through myGov if you're moving abroad long-term (the ATO's trigger is an intention to be overseas for six months or more). Second, report every year, even in years you earn little: below the reporting threshold you lodge a simple non-lodgment advice instead of an income report, but silence is not an option.
Your foreign income is converted to Australian dollars and assessed against the standard bands. Earn the equivalent of $80,000 in London or Singapore and the 2026-27 repayment is $1,570.80 — exactly what a Sydney salary of $80,000 produces. The nil threshold ($69,528), the 15% and 17% bands, the 10% ceiling: the whole table applies unchanged. For self-assessment the ATO offers simplified conversion methods based on average exchange rates; the mechanics are on the ATO's overseas-repayments page linked below.
One asymmetry to plan around: there's no employer in the loop. No foreign payroll withholds HECS, so the entire year's repayment arrives as a single bill when you report — the overseas version of the second-job problem, and the same fix applies: put aside a proportion of each pay yourself.
If you're planning a move: check your balance before you go (myGov works from anywhere), keep your details current, and treat the annual worldwide-income report as a fixture like a tax return — because that's what it is. The precise lodgment mechanics and current reporting thresholds are maintained on the ATO's overseas repayments page, which is the source to trust over any calculator site, including this one.
Return, and the machinery reverts on its own: an Australian employer sees the study-loan box ticked on your TFN declaration and fortnightly withholding resumes; your repayment income goes back to being assembled from Australian payroll data instead of self-reported worldwide income. Two joins are worth watching in the transition year.
First, a part-year mix: the assessment covers the full July–June year, so foreign income from the months abroad and Australian salary from the months home are combined into one repayment income — the repayment lands on the total, even though withholding only ever saw the Australian part. Expect the same reconciliation gap as a second job creates, for the same one-payroll-can't-see-everything reason.
Second, the balance you return to is the one that's been indexing while you were away. If the years abroad were also years of not repaying, the payoff arithmetic restarts from a higher number — put the current balance and your new salary through the payoff planner rather than resuming an old mental estimate. The plan you left with is stale by exactly the indexation the absence added.
Every figure on this page is computed at build time by the same engine that powers the calculators on this site — nothing is typed in by hand, so the tables cannot drift away from the tools. The engine is checked against the ATO's published thresholds by a golden test suite that fails the build if any figure moves unexpectedly.