I have lost count of the clients who walk in convinced their HELP debt is a rounding error. It sat quietly on the ATO statement for years, it never showed up as a repayment they consciously made, and nobody told them it mattered until a lender handed back a borrowing number lower than they expected. Then the penny drops. A HECS or HELP debt does not stop you getting a home loan, but it does shrink what the bank will lend you, and in FY2026-27 that hit is bigger than most people assume because of how serviceability is built. The compulsory-repayment threshold from 1 July 2026 is $69,528. Cross it and the ATO starts skimming a percentage of your income to clear the debt, and every dollar of that skim is treated by a lender as a fixed commitment competing directly with your mortgage repayment.
Lenders assess the repayment, not the balance
This is the single most misunderstood thing about HELP and home loans, so let me be blunt. The bank does not care whether your HELP balance is $8,000 or $45,000. It cares about the compulsory repayment coming out of your salary, because that repayment is what reduces the income available to service a mortgage. The ATO calculates your compulsory repayment as a percentage of your repayment income once you clear the $69,528 threshold, and the percentage steps up as your income rises. A borrower on $95,000 is losing a few hundred dollars a month to that compulsory repayment before they have paid a cent of rent or mortgage. The lender takes that monthly figure, treats it as an ongoing living commitment, and subtracts the borrowing capacity it supports from the top of your loan.
Now layer on the APRA serviceability buffer, which is still 3 per cent while the consultation runs (it closes on 18 July 2026, and the outcome is not yet known). Lenders are testing new borrowers at roughly 9.2 to 9.5 per cent: the variable rate around 6.2 to 6.5 per cent plus that 3 per cent buffer. Your HELP repayment does not get buffered, but the mortgage it displaces does. Every dollar of income the HELP repayment consumes is a dollar that cannot service a loan assessed at 9-point-something per cent. That is the quiet mechanism that turns a modest monthly repayment into tens of thousands of lost capacity.
A worked example on $95,000
Take a single applicant earning $95,000, no other debts, applying for an owner-occupier loan. Their compulsory HELP repayment runs at roughly $300 a month, call it $3,600 a year off the top of their assessable servicing income. Here is the leverage effect. At an assessment rate near 9.3 per cent over 30 years, a dollar of annual repayment capacity supports somewhere around $10 to $12 of loan principal. So $3,600 a year of income redirected to HELP does not cost you $3,600 of borrowing power; it costs you roughly $35,000 to $45,000 of it. Treat that as an estimate, not a quote, because the exact number swings on the lender, your other expenses and how they read your living costs. But the direction and the scale are real: a HELP debt most people wave away as trivial routinely takes $30,000 to $50,000 off a single borrower on this kind of income. On a couple where both carry HELP, the combined drag can clear six figures.
Run your own numbers through the borrowing power calculator with and without the HELP repayment field, and the gap will surprise you. That gap is the thing worth managing, not the balance sitting on your ATO statement.
Where policy varies, and where a broker earns their keep
Here is the part the bank comparison sites never tell you: lender HELP policy is not uniform, and the differences are worth real money. Most lenders assess the compulsory repayment as an ongoing commitment for as long as the debt exists. But some will disregard the HELP repayment entirely if the balance is small and demonstrably going to be cleared inside roughly the next 12 months, usually on sight of your payslips and ATO statement showing how fast it is running down. That single policy difference can be the whole approval. A borrower with a $6,000 HELP balance and a repayment big enough to knock $30,000 off capacity at one lender can have that repayment ignored at another, because the second lender accepts the debt will be gone within a year. Same borrower, same income, materially different loan amount, purely because of which lender read the file.
This is exactly the terrain a broker is built for. Guessing which of thirty-odd lenders has the friendliest HELP treatment for your specific balance is not something you can reverse-engineer from a rate table. It is written into credit policy, it changes, and it is the difference between an approval and a decline for people sitting near the edge.
Should I pay it off before I apply? The honest answer
Everyone asks this, and the honest answer has conditions attached. Paying a lump sum off your HELP debt only helps your borrowing power if it removes the compulsory repayment before the lender assesses you. If your balance is large enough that a partial payment still leaves you above the threshold with a repayment, you have spent cash and moved your capacity almost nothing. Clearing the debt entirely, so there is no compulsory repayment at all, restores the full slab of capacity the repayment was suppressing. That is the only version of paying it down that reliably shifts the loan number.
The trade-off is brutal and it is about your deposit. Money you throw at HELP is money not sitting in your deposit or your emergency buffer. If clearing a $12,000 HELP debt buys you back, say, $40,000 of borrowing capacity but drains $12,000 out of your deposit, you may have pushed your loan-to-value ratio the wrong way, tripped lenders mortgage insurance, or left yourself with no cash reserve the day the hot water system dies. Capacity you cannot fund with a deposit is not capacity. The maths only works cleanly when you have surplus cash beyond a healthy deposit and buffer, and clearing the debt removes the repayment outright.
- Do not pay HELP down if it comes out of your deposit and pushes your LVR above 80 per cent, because the LMI cost or rate loading will usually swamp the benefit.
- Do not make a partial payment that leaves you still above the $69,528 threshold with a compulsory repayment, because the repayment, and therefore the capacity hit, barely moves.
- Do consider clearing it in full if you have genuine surplus cash beyond your deposit and buffer, and the balance is small enough that wiping it removes the repayment entirely.
- Remember voluntary repayments no longer earn any bonus or discount, and mind the indexation timing: HELP balances are indexed annually, so a voluntary payment made just before indexation reduces the amount that gets indexed, but that is a minor saving, not a reason to raid your deposit.
What you should actually do
Before you spend a dollar clearing HELP, find out what the debt is actually costing you. Pull your latest ATO statement and payslip so you know your compulsory repayment and your balance, then run the borrowing power calculator twice, once with the repayment and once without, to see the real gap in your own numbers. If the gap is large and your balance is small enough to clear from surplus cash without touching your deposit or emergency buffer, clearing it in full is often the right move. If it is not, leave the money where it is and let a broker do the work that actually pays: matching you to a lender whose HELP policy treats a small, soon-to-be-cleared balance kindly, rather than guessing and copping the strictest assessment by default. And read up on how the buffered stress test compounds the effect before you assume your pre-approval number is fixed. The lender you choose can matter more than the debt you carry.
Disclosure: Your Finance Guide partners with Australian Lending and Investment Centre (ALG) ACL 505575 for broker matching, and ALG receives lender commissions on settled loans. Note the honest tension here: if the right answer is to clear a small HELP debt from surplus cash and hold off applying for a month, or to route your file to the lender who ignores a near-cleared balance, none of that pays a broker anything extra, and it is still the move we would make. Thresholds and repayment rates cited are for FY2026-27 from 1 July 2026; confirm current figures with the ATO, as they are indexed and change.