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Business Loan Calculator NZ: Repayments, Interest, and Amortisation

Updated 5 May 2026​
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How to Use Our Business Loan Calculator
  • Enter the loan amount you need to borrow, the loan term in years (most business loans run 1-7 years), and the interest rate the lender is offering. Business loan rates typically range from around 10% (secured bank loans for established businesses) to 18%+ (unsecured fast-funded loans for newer businesses or those with limited security).
  • Then choose your loan purpose: The editorial insight panel adjusts to suggest cheaper or better-suited alternatives if applicable. For instance, if you need working capital, a line of credit (where you only pay interest on what you actually use) often costs less than a term loan that locks you into paying interest on the full amount.
  • Know this first: Our guide to business loans explains everything you need to know, and popular low-cost alternatives. 

Business Loan Calculator

Work out your business loan repayments, total interest, and full amortisation schedule. Choose the loan purpose for tailored guidance.

Loan purpose
Monthly repayment $2,122
Total to repay $127,335
Total interest $27,335
Number of payments 60
!
21% of your total payments will be interest. Of the $127,335 you pay back, $27,335 is the cost of borrowing. For working capital needs, a line of credit or invoice finance often costs less because you only pay interest on what you actually use.
Year-by-year breakdown
Principal Interest Balance
Amortisation schedule
Important: Our calculations are based on the assumption that you make the same fixed business loan repayment for the entire loan period, the interest rate does not increase or decrease, you don't miss any repayment deadlines, overpay or underpay.

Video guidance: MoneyHub Founder Christopher Walsh explains how our business loan calculator works, and why interest costs (in dollar terms) can be higher than you expect:
Business loan fees and interest rates
  • ​Be aware that advertised interest rates from lenders may vary from your actual rate due to your personal circumstances. 
  • Many lenders charge loan approval fees (usually around 1% to 3% of the loan amount) which is added to the borrowing amount. 
  • The interest rate is dependent on the credit score of the borrower and any guarantors, the affordability or the loan  (i.e. your financial position) and the purpose of the loan (e.g. is it for working capital, growth or an asset purchase).
  • Because every business is different, the only way to find out the interest rate for your business is to approach lenders directly.

Our video guide to business loans has more details around the risks and true costs of a business loan:
Fast Business Funding: Compare Your Options​
We compared business loans from Prospa and five major banks (ANZ, ASB, BNZ, Kiwibank and Heartland). The results were clear - Prospa offers several advantages:
  • Same-day funding vs 2-4 week bank waits
  • ​Decision in one hour (vs weeks of uncertainty with banks)
  • No property security needed up to $150,000
  • 10-minute online application
  • Unlimited extra repayments without penalties
  • 24/7 app with Xero integration
  • Unique benefit: 14-day Change of Mind Policy - return funds at no cost

Know More: We Reviewed Prospa's Financial Statements - Here's What Matters
We obtained Prospa NZ's audited accounts from the Companies Office for the year ended June 2025. Four things stood out to us that are relevant to any small-to-medium-sized business considering applying for a loan:
  • They're financially healthy: Prospa NZ is profitable and has positive equity. We believe a stable, well-capitalised lender is more likely to treat you fairly and work with you if your circumstances change.
  • They have money to lend: Prospa secured $190 million in new funding for SMEs in late 2025. When they say they can fund your loan quickly, they have the capacity to do it.
  • They're reinvesting, not extracting: Prospa NZ paid no dividends - profits are being kept in the business, suggesting a commitment to growing their lending operation.
  • They're part of a larger group: Prospa NZ is backed by its parent company, which has funded over $4 billion in small-business loans across Australia and New Zealand since launching its SME lending service in 2012. 

Prospa offers three flexible options:
Prospa has funded 50,000+ NZ business loans and lines of credit, with over $4 billion delivered. Based on consistent reader feedback, our view is that Prospa funds faster, requires less security, and actually wants to help businesses grow

Frequently Asked Questions

Know this: Missing a payment on a business loan will have severe consequences for the going concern of your business. Lenders may request your business is put into administration. Any delayed payments may make borrowing in the future far more difficult as well. 

If you have security over your business loan, the security will be repossessed if you do not keep up with repayments. 

What is the maximum limit for a business loan?

It depends on the size of your business, but generally, unsecured loans can be as high as $75,000, and for small businesses, a $200,000 secured loan is not unusual. Different businesses attract different lending terms, so the only thing that matters is how much your business can borrow.​

Where can I get the best business loan deal and terms?

  • Our guide to business loans explains everything you need to know, and popular alternatives. We also review Prospa and Bizcap, both specialised business lenders.
  • Our guide to business credit cards outlines current offers available, and why business credit cards can be a low-cost alternative to applying for a business loan.
  • Having a good personal credit history is important - our guide to credit scores and reporting explains what you need to know.
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