Repayments on a $1.2m Home Loan: Monthly, Fortnightly, Weekly
Repayments on a $1.2 million home loan at different rates and terms, interest only versus principal and interest, and the income behind the loan.

The repayments on a $1,200,000 home loan are about $7,195 a month at the 6% example rate over 30 years. That is $3,321 a fortnight or $1,660 a week. Interest only at 6% is $6,000 a month. At 5% the principal and interest figure is about $6,442, and at 7% about $7,984.
| Rate and term | Monthly | Fortnightly | Weekly |
|---|---|---|---|
| 5.5%, 30 years | $6,813 | $3,145 | $1,572 |
| 6%, 30 years | $7,195 | $3,321 | $1,660 |
| 6.5%, 30 years | $7,585 | $3,501 | $1,750 |
| 6%, 25 years | $7,732 | $3,568 | $1,784 |
| 6%, 20 years | $8,597 | $3,968 | $1,984 |
| 9%, 30 years (assessment rate) | $9,655 | $4,456 | $2,228 |
| 6%, interest only | $6,000 | $2,769 | $1,385 |
The weekly and fortnightly columns divide the yearly cost evenly. They are not the faster true-fortnightly method. The repayment calculator runs a split or a different term.
Interest only or principal and interest on $1.2 million?
Interest only saves about $1,195 a month at first, but the balance does not fall. When a five-year interest-only period ends, the full $1,200,000 is repaid over the remaining 25 years: about $7,732 a month at 6%. Investors often choose it for cash flow. Owner-occupiers usually pay more interest overall. See interest-only home loans.
Should a $1.2 million loan be split?
Many borrowers fix part and leave part variable, for example $600,000 fixed for certainty and $600,000 variable with an offset. On a loan this size each 0.25 percentage point is about $194 a month, so the split decides how much of a rate move reaches you. See split home loans.
What income does $1.2 million need?
On our assumptions about $256,000 combined as a couple or $267,000 single with no other debts. See income needed for a $1.2m home loan. Lenders test the loan at about $9,655 a month.
What do extra repayments save on $1.2 million?
Extra money goes straight to principal, so it cuts the interest for every month that follows. Paying off a home loan faster covers the other ways to do it.
| Extra | Time saved | Interest saved |
|---|---|---|
| $200 a month | 2.1 years | $117,000 |
| $500 a month | 4.7 years | $256,000 |
| $1,000 a month | 7.9 years | $425,000 |
What does each rate rise add on $1.2 million?
- A 0.25% rise: about $194 more a month.
- A 0.50% rise: about $390 more a month.
- A 1% rise: about $789 more a month.
The rate rise calculator runs your own balance and term, and the RBA cash rate page lists the next decision dates.
Does paying fortnightly help on $1.2 million?
Only if you pay half the monthly amount every fortnight. That is 26 half-payments a year, or 13 monthly repayments. On $1.2 million at 6% it clears the loan about 5.4 years sooner and saves about $295,000 of interest. Paying the fortnightly equivalent of the monthly figure saves almost nothing.
How much of each repayment is interest on $1.2 million?
In the early years, nearly all of it: of the first $7,195 repayment, $6,000 is interest and $1,195 reduces the debt.
| When | Balance owing | Repaid so far |
|---|---|---|
| After 5 years | $1,116,700 | $83,300 |
| After 10 years | $1,004,200 | $195,800 |
| After 20 years | $648,000 | $552,000 |
How much does $1.2 million cost over the life of the loan?
At 6% over 30 years, about $1,390,100 in interest on top of the $1,200,000 borrowed, if the rate never changed. It will change: Australian lenders fix for one to five years at a time. See 30-year fixed rate home loans.
| Rate | Monthly repayment | Total interest |
|---|---|---|
| 5% | $6,442 | $1,119,100 |
| 6% | $7,195 | $1,390,100 |
| 7% | $7,984 | $1,674,100 |
How much does an offset account save on $1.2 million?
- $20,000 sitting in an offset saves about $1,200 of interest in the first year at 6%.
- $50,000 sitting in an offset saves about $3,000 of interest in the first year at 6%.
- $100,000 sitting in an offset saves about $6,000 of interest in the first year at 6%.
The saving repeats every year the money stays there, and it is not taxed the way savings interest is.
The same tables for a $1 million or a $1.5 million loan are worked the same way, and the repayment calculator does any amount, rate and term.
Questions people ask
What are the repayments on a $1.2 million mortgage?
About $7,195 a month at 6% over 30 years.
What are the fortnightly repayments on $1.2 million?
About $3,321 a fortnight at 6%, converted from the monthly figure.
How much interest on $1.2 million over 30 years?
About $1,390,000 at 6% if the rate stayed the same.
What are the repayments over 25 years?
About $7,732 a month at 6%.
Charles Touma structures a $1.2 million loan, including splits, offset and interest only where it suits, across lenders. A free 30-minute call covers your loan. General information only, not credit advice. Lender policies change, and your own circumstances decide what suits you.
Sources: Moneysmart, mortgage calculator; Moneysmart, home loans, checked 27 October 2026.
General information only, not credit, legal or tax advice. Your situation is assessed properly before any recommendation. Government scheme details change; figures are current at the time of writing.
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