Personal Loan Calculator
Calculate monthly repayments, total interest and total cost for NZ personal loans. Includes establishment fees and ongoing monthly fees to show the true cost — so you can compare loan offers on total cost, not just the advertised rate.
Some lenders charge a monthly account-keeping fee on top of interest.
How NZ Personal Loans Work
Personal loans in New Zealand are regulated under the Credit Contracts and Consumer Finance Act (CCCFA). Lenders must disclose the annual interest rate, the comparison rate (including fees), the total amount repayable, and all fees before you sign.
Most personal loans are fixed-rate, fixed-term — your rate and repayment stay the same for the life of the loan. This makes budgeting straightforward. Early repayment may attract a fee (typically a small fixed charge or a percentage of the remaining balance), though some lenders allow fee-free extra payments.
The key numbers to compare across loan offers are the total cost (everything you will pay back) and the effective annual rate (the true annualised rate including all fees). A lower advertised rate with high fees can cost more overall than a slightly higher rate with no fees.
Frequently asked questions
How does personal loan interest work in New Zealand?
NZ personal loans use a fixed or variable annual interest rate applied to the reducing balance. Each monthly repayment covers the interest accrued that month plus part of the principal. As the balance reduces, the interest portion shrinks and the principal portion grows — a standard amortising loan. The rate you qualify for depends on your credit score, security, and the lender.
What is the difference between the advertised rate and the comparison rate?
The advertised rate is interest only. The comparison rate (or effective annual rate) folds in establishment fees, monthly account-keeping fees and annual fees into a single percentage — showing the true cost. Under the CCCFA, NZ lenders must disclose both. A loan with a low advertised rate but high fees can have a much higher comparison rate.
How do establishment fees affect the true cost?
An establishment fee ($150–$500 for personal loans) is the upfront charge for setting up the loan. If added to the loan balance, you pay interest on it for the full term — a $250 fee at 13% over 5 years adds roughly $85 in extra interest. Ongoing monthly fees ($5–$15/month) also compound the cost. Always compare total cost, not just the monthly payment.
How does the loan term affect total cost?
A longer term lowers your monthly payment but increases total interest significantly. A $10,000 loan at 13% over 3 years costs about $2,160 in interest; over 5 years it rises to $3,700. The tradeoff is monthly affordability vs total cost. Use the term selector above to compare — watch the total interest and total cost figures change.
What is the difference between a secured and unsecured personal loan?
A secured loan is backed by an asset (typically a car) that the lender can repossess if you default — rates are lower, often 8%–13%. An unsecured loan has no asset backing, so rates are higher — typically 13%–25%. Approval for unsecured loans depends more on your credit score and income. This calculator works for both — just adjust the rate to match your offer.
Sources
Loan calculations follow standard amortisation formulas. Fee structures and disclosure requirements are based on the Credit Contracts and Consumer Finance Act 2003 (CCCFA) and Commerce Commission guidance on responsible lending.
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Last updated May 2026. Calculations follow standard amortisation formulas. Fee structures based on CCCFA disclosure requirements.
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