Our mortgage repayment calculator helps you estimate your monthly repayments based on loan amount, interest rate, and term, so you can plan ahead, compare options, and stay in control of your property journey.
Use our tools to become a property investment expert.
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Thrive’s property investment calculators give investors the knowledge they need to make informed decisions. Whether you're assessing rental yield, equity, or long-term returns, these tools help you make smarter decisions, backed by local NZ data and Thrive’s proven logic. They're designed to cut through guesswork and give you confidence in every scenario.
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Your repayment estimate is just one piece of the puzzle. To get a clearer picture of what your mortgage could cost, explore our live interest rate comparisons across major lenders - updated regularly with the latest fixed and floating offers.
It calculates your estimated monthly mortgage payments based on your loan amount, interest rate, and loan term. The results are shown as interest-only payments and principal and interest payments.
Principal and interest payments cover both the loan amount (principal) and the interest, reducing your balance over time. Interest-only payments cover just the interest, so your loan balance stays the same during the loan term. Read more about loan structures here.
It depends on your goals. Principal and interest reduces your debt over time and builds equity, while interest-only payments can lower short-term costs but don’t reduce your loan balance. Both have pros and cons for investors. Discuss your situation with an advisor to choose the best option.
The calculator assumes a fixed interest rate for the full loan term and uses standard loan amortisation for principal and interest payments. It doesn’t include property taxes, insurance, or other fees.
Yes. You can change the loan amount, interest rate, and loan term to see how different factors affect your monthly repayments.
No, this calculator provides estimates based on your inputs. For tailored advice considering your financial situation and the latest market conditions, speak to a Thrive advisor.
Here are some tools to help your property investment journey:
At Thrive we take a strategic approach to evidence-based property investment. With a view to helping you build wealth using our expert knowledge and market research to structure your portfolio in a way that gives you a superior outcome than merely buying and holding a few houses.
