Mortgage Calculator
See your repayments instantly — then see how extra repayments, an offset account, or switching to fortnightly payments could cut years and thousands of dollars off your loan.
ⓘ Interest rate vs comparison rate
The interest rate sets your repayment. The comparison rate folds in most fees to show the loan's true annual cost — always compare loans using the comparison rate, not just the headline rate.
✓ Extra repayments compound over time
Even a small regular extra repayment can cut years off a 30-year loan, because it comes straight off the principal that interest is calculated on.
⚠ Estimate only
This is a repayment estimate, not a loan approval or formal quote. Actual repayments depend on your lender's exact terms and fees.
Year-by-year schedule
| Year | Opening balance | Interest paid | Principal paid | Closing balance |
|---|
Your last saved calculations
Change any value and it'll be saved here automatically.
Four steps to your full picture
Enter the basics
Loan amount, rate, term, and how often you'll repay.
Add extras (optional)
Extra repayments, an offset balance, or a lump sum.
See the full picture
Repayment amount, total interest, and time saved, instantly.
Check the schedule
A year-by-year breakdown of principal, interest, and balance.
How this compares
| Feature | Typical bank calculator | CalcuHive |
|---|---|---|
| Extra repayments modeling | Rarely shown, or a separate tool | Built in, one panel |
| Offset account modeling | Usually not included | Included |
| Year-by-year schedule | Often not shown | Full breakdown, every year |
| Fortnightly vs monthly savings | Rarely spelled out in dollars | Calculated automatically |
| Tied to one lender's rates | Yes, usually that bank's own rate | No — use any rate you're comparing |
Common questions
Why is my repayment different from what my bank quoted?
Small differences usually come from rounding conventions, fees folded into the repayment, or a slightly different rate than what you entered. Always treat your lender's formal quote as the accurate figure — this tool is for comparing scenarios, not a substitute for that quote.
How much difference do extra repayments really make?
A lot, because extra repayments reduce the principal balance that interest is calculated on every single period. On a 30-year loan, even a modest regular extra repayment can save years and tens of thousands of dollars in interest — the calculator shows your exact numbers above.
How does an offset account save me interest?
Money sitting in a linked offset account is subtracted from your loan balance before interest is calculated, without actually reducing your loan balance. So $20,000 in offset against a $600,000 loan means you're only charged interest on $580,000 — but you can still access that $20,000 anytime.
Why does paying fortnightly save money?
Paying half your monthly repayment every fortnight means 26 payments a year instead of 24 — the equivalent of one extra monthly repayment annually, snuck in almost painlessly. It's one of the simplest ways to pay off a mortgage faster without changing your budget much.
Does this include stamp duty or lenders mortgage insurance (LMI)?
No — deliberately. Stamp duty varies significantly by state and territory, and LMI depends on your specific lender and deposit size, so estimating them here risks giving you a misleading number. Check your state revenue office and lender directly for those figures.
Related reading
Offset account vs redraw: what's the difference
Two ways to use extra cash against your mortgage, compared.
Read article →Interest rate vs comparison rate, explained
Why the comparison rate is the number that actually matters.
Read article →5 ways to pay off your mortgage faster
Practical tactics beyond just "pay more."
Read article →This calculator provides estimates only and is not a loan offer, approval, or formal quote. It does not include stamp duty, LMI, or other upfront costs. Always confirm exact figures with your lender or a mortgage broker before making a decision.