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Personal Loan Calculator Australia

Calculate your personal loan repayments. Enter the loan amount, interest rate, and term to see your monthly repayment, total interest, and full repayment schedule.

Loan Details

$
% p.a.
years

Monthly Repayment

$410

$189/fortnight ยท $95/week

Loan Amount$20 000
Interest Rate8.5% p.a.
Loan Term5 years (60 payments)

Total Repaid$24 620
Total Interest$4 620

Principal vs Interest

Principal
Interest

Term Comparison

TermMonthlyTotal Interest
5 years (selected)$410$4 620
3 years$631$2 729
7 years$317$6 605
Repayment Schedule
YearBalancePrincipal PaidInterest Paid
1$16 647$3 353$1 571
2$12 998$7 002$2 846
3$9 027$10 973$3 799
4$4 705$15 295$4 400
5$0$20 000$4 620
Mottalib Radif

By Mottalib Radif

MBA INSEAD · Finance Enthusiast

Updated for 2026-27 financial year · Last verified 2026-07-01

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Quick Loan Repayment Estimator

Enter your loan details for an instant monthly repayment estimate and total interest calculation.

Understanding Personal Loan Repayments in Australia

Personal loans are one of the most common forms of consumer credit in Australia, used to finance everything from car purchases and home renovations to debt consolidation and emergency expenses. As of 2024, Australians hold approximately $22 billion in personal loan debt across an estimated 2.5 million active loan accounts. The typical personal loan ranges from $5 000 to $50 000 with terms of 1 to 7 years and interest rates between 6% and 14% depending on the loan type, security, and the borrower's creditworthiness.

Personal loan repayments are structured using amortisation, a process where equal monthly instalments cover both interest and principal over the life of the loan. Each payment is split between interest (calculated on the remaining balance) and principal reduction. In the early months of the loan, a larger proportion of each payment goes toward interest because the outstanding balance is at its highest. As the balance decreases with each payment, the interest component shrinks and more of each payment goes toward reducing the principal. By the final months, nearly the entire payment is principal.

For a $25 000 loan at 8.5% over 5 years, the monthly repayment is approximately $512. Of the first month's payment, approximately $177 is interest ($25 000 multiplied by 8.5% divided by 12) and $335 is principal. Over the full 5-year term, you pay approximately $5 730 in total interest, making the total cost $30 730. Understanding this total cost, not just the monthly repayment, is essential for evaluating whether a loan is financially appropriate for your situation.

Types of Personal Loans in Australia

Secured Personal Loans

A secured personal loan is backed by an asset, typically a car or other vehicle, that the lender can repossess if you default on repayments. Because the lender has security against the loan, the interest rates are lower, typically 6% to 10%. Secured loans are most commonly used for car purchases, boat purchases, and large equipment purchases. The asset remains in your possession during the loan term but the lender registers a security interest over it through the Personal Property Securities Register (PPSR).

Unsecured Personal Loans

An unsecured personal loan has no asset backing. The lender relies solely on your credit history, income, and ability to repay. Because there is no asset to recover in case of default, interest rates are higher, typically 7% to 14%. Unsecured loans are used for a wide range of purposes, including debt consolidation, renovations, holidays, weddings, and medical expenses. The flexibility of use is a key advantage, as you do not need to specify or prove the purpose of the loan in most cases.

Fixed vs Variable Rate Loans

Fixed-rate loans lock in the interest rate for the entire term, providing certainty about your repayments. Variable-rate loans can change during the term based on market conditions and the lender's discretion. Fixed rates are generally higher than initial variable rates because the lender is bearing the risk of rate changes. However, if market rates rise, a fixed-rate loan protects you from increases. Most personal loans in Australia are fixed-rate, unlike mortgages where variable rates are more common.

Interest Rate Comparison by Loan Type

Loan TypeTypical Rate RangeMonthly Repayment ($25K, 5yr)Total Interest ($25K, 5yr)
Secured car loan6.0% - 8.0%$483 - $507$3 980 - $5 420
Unsecured personal loan8.0% - 12.0%$507 - $556$5 420 - $8 360
Green/EV loan5.5% - 7.5%$478 - $500$3 680 - $5 000
Debt consolidation loan8.0% - 14.0%$507 - $581$5 420 - $9 860
Credit card (minimum payments)15% - 22%VariesCan exceed original balance

Rates are indicative for borrowers with good credit scores (700+). Actual rates depend on individual circumstances, lender, and loan features.

How the Loan Term Affects Total Cost

The loan term has a dramatic impact on both the monthly repayment amount and the total interest paid. A shorter term means higher monthly payments but substantially less total interest, while a longer term reduces monthly payments but significantly increases the total cost of the loan.

TermMonthly RepaymentTotal InterestTotal Cost
2 years$1 131$2 148$27 148
3 years$789$3 410$28 410
5 years$512$5 730$30 730
7 years$395$8 210$33 210

Based on a $25 000 loan at 8.5% interest. Choosing a 7-year term instead of 3 years saves $394 per month but costs an additional $4 800 in total interest.

The general rule is to choose the shortest term you can comfortably afford. "Comfortably" means the repayment should not exceed approximately 10% of your after-tax income, and you should still have an adequate emergency fund and be meeting other financial obligations. If the only way to afford a loan is to extend the term to 7 years, consider whether the purchase is truly necessary or whether a smaller loan would be more appropriate.

Credit Score and Its Impact on Loan Rates

Your credit score, maintained by the three major credit bureaus in Australia (Equifax, Experian, and illion), is one of the primary factors lenders use to determine your interest rate. A higher credit score indicates lower risk to the lender and typically results in a lower interest rate. The score ranges and their typical impact on personal loan rates are approximately:

You are entitled to request your credit report for free once per year from each bureau. Checking your report before applying for a loan allows you to identify and correct any errors, understand your score, and target lenders whose criteria match your profile. Each loan application creates a "hard inquiry" on your credit report, which can temporarily reduce your score by 5 to 10 points. Avoid submitting multiple applications simultaneously; instead, use comparison websites that perform "soft checks" (which do not affect your score) to identify the best options before making a formal application.

Strategies for Getting the Best Loan Deal

Debt Consolidation: When It Makes Sense

Debt consolidation involves combining multiple debts (credit cards, store cards, personal loans) into a single loan, ideally at a lower interest rate. This simplifies your finances (one payment instead of many) and can reduce the total interest paid if the consolidation loan rate is lower than the weighted average of your existing debts.

For example, if you have $5 000 on a credit card at 20%, $8 000 on a store card at 18%, and $12 000 on a personal loan at 12%, your total debt is $25 000 with a weighted average rate of approximately 15.6%. Consolidating into a single personal loan at 9% reduces the average rate by 6.6 percentage points and saves approximately $1 650 in interest per year. Over a 3-year repayment period, the total savings could exceed $4 000.

However, debt consolidation only works if you address the underlying spending behaviour that created the debt in the first place. If you consolidate $25 000 in debt and then continue using credit cards without paying them off in full each month, you end up with the consolidation loan plus new credit card debt, making your financial situation worse than before. The most successful consolidation strategies involve cutting up the credit cards (or at least reducing their limits to zero) and committing to a strict budget during the repayment period.

Sources

Frequently Asked Questions

How are personal loan repayments calculated?
Personal loan repayments are calculated using amortisation, where each monthly payment covers both interest and principal. The formula divides the loan amount into equal monthly payments over the loan term, with early payments going mostly to interest and later payments mostly to principal.
What is a good personal loan interest rate in Australia?
As of 2025-26, competitive personal loan rates in Australia range from about 6% to 10% for secured loans and 7% to 14% for unsecured loans. Your actual rate depends on your credit score, income, loan amount, and whether the loan is secured (e.g. by a car).
Should I choose a shorter or longer loan term?
A shorter term means higher monthly payments but much less total interest paid. A longer term has lower monthly payments but costs significantly more in interest over the life of the loan. Choose the shortest term you can comfortably afford.
What is the difference between secured and unsecured loans?
Secured loans are backed by an asset (like a car) that the lender can repossess if you default. They typically have lower interest rates (6-10%). Unsecured loans have no asset backing, so they carry higher rates (7-14%) to compensate for the lender's increased risk.
Can I pay off my personal loan early?
Most Australian personal loans allow early repayment, but some charge an early repayment fee (typically 1-2 months of interest). Fixed-rate loans are more likely to have break costs. Check your loan contract or ask your lender before making extra payments.
How does a personal loan affect my credit score?
Applying for a loan creates a hard inquiry on your credit report (which may temporarily lower your score). Making all repayments on time builds a positive repayment history. Missing payments or defaulting significantly damages your credit score.