--- title: Personal Loan Repayment Calculator Australia | GNT Finance description: Estimate personal loan repayments, total interest and how the term changes the cost. Compare secured and unsecured options with GNT Finance, Melbourne brokers. url: https://gntfinance.com.au/calculators/personal-loan/ section: calculators updated: 2026-09-01 author: Gorakh Timilsina, GNT Finance --- # Personal loan repayment calculator **In short:** This calculator estimates the regular repayment and total interest on a personal loan of $2,000 to $75,000 over one to seven years. The key rule: personal loan rates are far higher than home-loan rates, so keep the term short. A $20,000 loan at 12.00% p.a. costs $3,914 in interest over three years but $9,657 over seven. ## How this calculator works The maths is the standard amortisation formula for any principal-and-interest loan: equal instalments over the term, with interest charged on the balance still owing. Early repayments are mostly interest; later ones mostly principal. ### Assumptions the calculator makes - A fixed interest rate for the whole term, which is how most Australian personal loans are structured. - Repayments in arrears at the frequency you select. Fortnightly repayments are the annual figure divided by 26, so you make the equivalent of one extra monthly payment each year. - No fees included unless you add them to the loan amount. - No redraw or extra repayments, which many variable-rate personal loans allow. Because pricing is risk-based, the calculator cannot tell you what rate you will get. Lenders price on your credit score, income, existing debts and whether the loan is secured, and a strong file can earn a rate several points below a blemished one. ## How to use the result Compare the repayment with the room in your budget after rent or mortgage, groceries, transport and existing debts. If it only fits with the longest term available, the loan is probably too large. Then look at total interest: the term is often the biggest lever you control. Also ask whether a personal loan is the right product. Homeowners can often borrow against equity at home-loan rates through a top-up or [refinance](/services/refinancing/), and our [debt consolidation calculator](/calculators/debt-consolidation/) shows whether folding debts together saves money. Anyone planning a [home loan](/services/home-loans/) soon should know that a personal loan repayment reduces borrowing capacity in the same way a car loan does. ## Worked example A Sunbury tradie borrows $20,000 unsecured to fit out a new ute and clear a credit card. For illustration, the fixed rate is 12.00% p.a. with no fees. | Term | Monthly repayment | Total repaid | Total interest | |---|---|---|---| | 2 years | $941 | $22,595 | $2,595 | | 3 years | $664 | $23,914 | $3,914 | | 5 years | $445 | $26,693 | $6,693 | | 7 years | $353 | $29,657 | $9,657 | Choosing seven years instead of three halves the repayment but costs $5,743 more in interest. Paying fortnightly over three years instead ($306 a fortnight) reduces interest slightly to $3,861 because the balance falls faster. Rate matters too: on the three-year loan, 9.00% p.a. gives a $636 repayment and $2,896 interest, while 15.00% p.a. gives $693 and $4,959. ## What this calculator doesn't include - **Establishment fees**, typically a few hundred dollars, and ongoing monthly fees that some lenders charge. - **Early repayment or exit fees** on fixed-rate loans. - **Rate changes** on variable-rate personal loans. - **Risk-based pricing.** The rate you type in may not be the rate you are offered. ## Tips to improve the outcome - Borrow only what you need. Rounding up "just in case" costs interest for years. - Pick the shortest term you can manage, and check that the loan allows extra repayments without penalty. - Offer security if you have it. A secured loan against a car or term deposit usually attracts a lower rate than an unsecured one, and the [car loan calculator](/calculators/car-loan/) covers vehicle finance specifically. - Fix the small things on your credit file first. Our guide to [credit scores and home loans](/guides/credit-score-and-home-loans/) explains what lenders see. - If the purpose is clearing several debts, read the [debt consolidation guide](/guides/debt-consolidation-guide/) before choosing a product, because a longer term can quietly increase what you pay. ## Frequently asked questions ### How much is a $20,000 personal loan per month? For illustration, at 12.00% p.a. a $20,000 personal loan costs $941 a month over two years, $664 over three, $445 over five and $353 over seven. Total interest ranges from $2,595 on the shortest term to $9,657 on the longest, so the term you pick matters as much as the rate. ### How much can I borrow on a personal loan? Most Australian lenders offer personal loans from around $2,000 up to $50,000 unsecured, and higher amounts when secured. What you are approved for depends on income after living expenses and existing commitments. A broker can check several lenders' criteria without multiple enquiries landing on your credit file. ### Is it better to get a personal loan or use home equity? If you own a home with usable equity, borrowing against it through a top-up or refinance is usually far cheaper because home-loan rates are much lower than personal-loan rates. The trade-off is that spreading a small debt over 30 years can cost more overall unless you repay it quickly. Ask us to model both options before deciding. ### Does a personal loan affect my credit score? Applying creates a credit enquiry, and several enquiries in a short period can lower your score. Once approved, the loan appears on your file, and paying on time builds positive repayment history. Missed payments stay visible for years, so only borrow what you can comfortably service. ### Can I pay a personal loan off early? Usually yes. Variable-rate personal loans typically allow extra repayments and early payout without penalty. Fixed-rate loans may charge an early termination fee, so read the contract if you expect to clear the debt early. Paying out even six months early on a five-year loan saves the interest for those months, so it is worth asking the lender for a payout figure before you decide. ## Talk to GNT Finance Our [personal loans](/services/personal-loans/) service compares lenders on rate, fees and flexibility so you are not stuck with the first offer. Gorakh Timilsina spent years assessing applications as a credit officer and knows what makes one land well. [Book a free consultation](/contact/) or call 0426 403 703.