Australia's Most Common
Home Loan — Explained
A principal and interest loan is the most common type of mortgage in Australia. Your repayments cover both the amount borrowed (principal) and the cost of borrowing (interest) — so your loan balance gradually decreases over time.
Why the benefits far outweigh the higher monthly cost
While the monthly repayments are higher than an interest-only loan, the benefits far outweigh the initial cost for most owner-occupiers.
You actually own your home
With P&I, you are building equity immediately. Equity is the difference between what your house is worth and what you owe — and it grows with every single repayment.
Lower interest rates
Lenders view P&I borrowers as lower risk. In the current 2026 market, the gap between P&I and interest-only rates can be as much as 0.50% to 1.00% — adding up to thousands of dollars over time.
Massive long-term savings
By chipping away at the principal from day one, you pay significantly less total interest over the life of the loan. On a $600,000 loan at 5.5%, choosing IO instead of P&I could cost over $35,000 extra.
Forced savings plan
P&I is like a forced savings plan — every repayment ensures you're moving forward and building wealth, not just treading water by paying interest indefinitely.
Is P&I right for you?
If your goal is to be debt-free and eventually own your home outright, Principal and Interest is almost always the right move. It is a "forced savings" plan that ensures you are moving forward — not just treading water. However, some investors prefer interest-only for tax purposes, and some buyers need lower payments short-term during renovations.
P&I vs interest-only — at a glance
Understanding the key differences helps you make the right choice for your financial goals and situation.
Feature
Principal & interest
RecommendedInterest-only
Real-world example — $600,000 loan at 5.5%
With 5-year interest-only period
$35,000+
Extra interest paid over the life of the loan compared to starting with P&I from day one.
Starting with P&I from day one
$35,000 saved
By chipping away at the principal from the start, you keep that money in your pocket — not the bank's.
Calculate your P&I repayments
Use the interactive calculator to see your monthly repayments, total interest, and how your loan balance reduces over time — and what extra repayments can do.
P&I loan & amortisation calculator
Your loan summary
Amortisation at a glance — how your loan balance reduces over time
Clean financial data — what lenders look for in 2026
The most critical part of a P&I application is your living expenses and credit conduct. In 2026, lenders use sophisticated AI to scan your bank statements — they are looking for much more than just your salary.
What lenders are checking in your bank statements
Required documents
The lender's AI scan — what it means for you
In 2026, lenders use automated tools that categorise every bank transaction. They benchmark your living expenses against the Household Expenditure Measure (HEM) for your household size. Reducing discretionary spending in the 3 months before applying can materially improve your assessed borrowing capacity.
Common questions
Everything homeowners and investors ask about principal and interest home loans.