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How to compare two loans properly

The loan with the lowest rate isn't always the cheapest once fees and timing are included.

Lenders advertise rates, but fees add to the cost. Upfront fees are paid once, ongoing fees are paid every month, and a lower rate saves money slowly over many years.

Worked example: $500,000 over 30 years

Loan ALoan B
Rate6.20%6.00%
Upfront and monthly feesnone$1,000 plus $10 a month
Monthly repayment$3,062.34$2,997.75
Interest over 30 years$602,444$579,191
Fees over 30 years$0$4,600
Total cost$602,444$583,791
πŸ’‘ Pro Tip: Loan B is cheaper by about $18,653 over the full term. After 5 years it is ahead by about $3,411, so the fees take a while to pay back.

Questions to ask

1
How long will I keep the loan?

If you expect to refinance or sell early, upfront fees and the first few years matter most.

2
What are the ongoing and exit fees?

Monthly or annual package fees and discharge fees add up.

3
What features do I get?

Offset accounts, redraw and extra repayment rules can be worth more than a small rate cut.

4
What does the comparison rate say?

It folds common fees into one rate, but only for a standard loan size and term.

✨ Key Takeaways

  • Compare total cost, not just the rate.
  • Include fees paid over the whole time you will hold the loan.
  • Features like offset can change the real cost.
  • Check the lender's comparison rate and speak to a licensed adviser.

Sources and checks

You can cross-check results with:

Results can differ slightly from other tools because of rounding, fees and the assumptions each one makes.

Standard fixed-rate amortisation formula. Ignores offset accounts, redraw and rate changes.

Figures last checked: 29 October 2026. Spotted a mistake? Tell us.

Open the loan comparison calculator β†’

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