Using a HELP Debt Repayment Calculator in Australia: A Step-by-Step Guide
Estimates your compulsory HELP (HECS) repayment for the year. This guide walks through what each input means, the formula behind the answer and a worked example using typical Australian figures. You can follow along in the free HELP Debt Repayment Calculator.
Why it matters
Australia taxes individuals on a progressive scale, so each extra dollar can be taxed at a different rate from the last. On top of income tax, most residents pay the 2% Medicare levy, and many carry HELP debts that are repaid through the tax system. Employers withhold tax from each pay under PAYG, and the annual tax return squares up the difference.
What you need to enter
The calculator asks for 2 inputs. The table shows each one with the example value used later in this guide.
| Input | Example value |
|---|---|
| Repayment income ($) | 80000 |
| HELP debt balance ($) | 30000 |
The formula
From 2025–26 repayments apply only to income above $67,000: 15 cents per dollar up to $125,000, then $8,700 plus 17 cents per dollar above that.
Worked example
Entering the example values above gives these results:
| Result | Value |
|---|---|
| Compulsory repayment this year | $1,950.00 |
| Per fortnight (approx.) | $75.00 |
| Years to repay (ignoring indexation) | 15.4 |
The headline figure is $1,950.00 (compulsory repayment this year). Change any input in the calculator and every result updates instantly, so you can test different scenarios side by side.
How the compulsory repayment this year changes with repayment income
The table below keeps every other input at the example value and moves only “Repayment income ($)” up and down by 10% and 20%. It shows how sensitive the compulsory repayment this year is to that one figure.
| Repayment income ($) | Compulsory repayment this year |
|---|---|
| 64,000 | $0.00 |
| 72,000 | $750.00 |
| 80,000 | $1,950.00 |
| 88,000 | $3,150.00 |
| 96,000 | $4,350.00 |
At 64,000 the result is $0.00; at 96,000 it is $4,350.00. If a small change in this input moves the answer a lot, it is worth double-checking that figure before you rely on the result.
A practical tip
Repayment income includes reportable fringe benefits, net investment losses and reportable super contributions, so it can be higher than your taxable income.
Keep going
Before relying on the number, read Common HELP Debt Repayment Mistakes (and a Better Way). You might also find these guides useful:
- Medicare Levy Calculator Explained for Australians
- How the Bonus Tax Calculator Works (With a Worked Example)
- Pay Rise Calculator: Formula, Example and What the Result Means
Frequently asked questions
- Are these results exact?
- They are estimates based on standard resident rates. Your actual tax depends on your full circumstances, offsets and any private health insurance position. The ATO’s own tools or a registered tax agent give a definitive answer.
- Do the calculators work for non-residents?
- No. Non-residents have different rates, no tax-free threshold and no Medicare levy. These calculators assume you are an Australian resident for tax purposes.
- When do tax rates change?
- Rates usually change on 1 July, the start of the Australian financial year. Check the ATO website each July for the current figures.
Run your own numbers in the HELP Debt Repayment Calculator.
Open the calculatorGeneral information only. Rates and thresholds change, usually on 1 July. Confirm current figures with the ATO or the relevant authority, and get personal advice for decisions about your situation.