Loans and debt questions, answered

Split Loan Optimiser Calculator NZ 2026/27

What is a split home loan?

A split home loan divides your mortgage into two or more separate portions, each with its own interest rate, term and structure, instead of putting the entire balance on one fixed rate or one floating rate. A common example is part of the loan on a 1-year fixed rate, part on a 2-year fixed rate, and the remainder floating, so you are never entirely locked into a single rate decision.

How do you calculate the blended interest rate on a split loan?

The blended rate is the amount-weighted average of each portion's rate. Multiply each portion's balance by its interest rate, add the results together, then divide by the total loan amount. A larger portion has a bigger influence on the blended rate than a smaller one at the same interest rate.

How many portions can I split a mortgage into?

Most New Zealand banks allow a mortgage to be split into several portions, commonly up to around five, though the exact number, any minimum portion size and whether a fee applies to restructure an existing loan all vary by lender. Check your own bank's current lending criteria before assuming a particular limit.

What is floating-rate exposure and why does it matter?

Floating-rate exposure is the percentage of your total loan sitting on a floating (variable) rate rather than a fixed term. A higher floating percentage means more of your repayment moves immediately when your bank changes its floating rate, which usually tracks the Official Cash Rate over time. It also means more of your loan can be repaid early or restructured without a break fee, since fixed portions carry break costs and floating portions do not.

Why doesn't my repayment total exactly match a single loan at the blended rate?

Because each portion amortises separately over the loan term as its own smaller loan, then the repayments are added together. This is mathematically slightly different from calculating one repayment on the full balance at the blended rate, since the loan repayment formula is not perfectly linear across different rates. The difference is normally small, often only a few dollars a month, but it explains why a bank's actual split-loan repayment schedule will not tie out to the cent against a single blended-rate calculation.

What happens when one portion of a split loan reaches the end of its fixed term?

That portion rolls over, meaning you choose a new rate and term for it, either refixing it again or moving it to floating, while your other portions continue on their existing terms undisturbed. Only the portion that has matured is exposed to whatever rates are available on that day, which is the main reason for staggering fixed terms rather than fixing everything on the same date.

Is a split loan the same as a revolving credit or offset mortgage?

No, they solve different problems. A split loan is about dividing your balance across different rates and terms to manage rate risk. A revolving credit or offset facility is a floating structure that lets extra cash sitting in a linked account reduce the interest charged, useful for paying a loan down faster with surplus income. Many borrowers use both together, for example a floating portion of a split loan structured as revolving credit alongside separately fixed portions.

Does splitting an existing mortgage cost anything?

Splitting a loan at the time you first draw it down or refix a portion generally does not cost extra. Restructuring an existing loan into new portions partway through a fixed term can trigger a break fee on the portion you are changing, calculated by your bank based on the difference between your fixed rate and current wholesale rates. Ask your bank or a mortgage adviser for the actual cost of any restructure before committing to it.

Debt Payoff Strategies

What is the best way to pay off debt?

Two popular methods are the avalanche (highest interest rate first, cheapest overall) and the snowball (smallest balance first, best for motivation).

What is the debt avalanche method?

You make minimum payments on all debts and put any extra toward the debt with the highest interest rate, which minimises total interest paid.

What is the debt snowball method?

You clear the smallest balance first for a quick win, then roll that payment into the next smallest, building momentum.

Should I pay off debt or save first?

Clear high-interest debt like credit cards before saving beyond a small emergency buffer, as that interest usually costs more than savings earn.

Loan Calculator NZ

How are loan repayments calculated?

Repayments use the standard amortisation formula. The payment equals P x i x (1+i)^n divided by ((1+i)^n - 1), where P is the loan amount, i is the interest rate per period (annual rate divided by the number of payments per year), and n is the total number of payments. This calculator does the maths for weekly, fortnightly, or monthly repayments.

Does paying weekly or fortnightly save interest?

Paying more often can reduce total interest slightly because the balance is reduced sooner, and paying fortnightly at half the monthly amount means you make the equivalent of one extra monthly payment a year. The biggest saving comes from a higher total amount paid per year and a shorter term.

What interest rate should I use?

Use the annual interest rate quoted by your lender. Personal loans in New Zealand are often higher than secured loans like mortgages or car finance. If you are comparing offers, also check fees, because the advertised rate does not always include them.

Is this the same as a mortgage calculator?

The repayment maths is the same. For a home loan with deposit, equity, and property costs, use our dedicated Mortgage Calculator. For a quick repayment figure on any loan amount, this calculator is the fastest option.

After-Tax Cost of Debt Calculator NZ

How do you calculate the after-tax cost of debt?

Multiply the pre-tax cost of debt by one minus the tax rate. If your loans carry an interest rate of 7.5 percent and your company tax rate is 28 percent, the after-tax cost of debt is 7.5 times (1 minus 0.28), which is 5.4 percent. Interest is tax deductible, so the true cost is lower than the headline rate.

Why is the after-tax cost of debt lower than the interest rate?

Because interest expense is deductible against company profit, every dollar of interest reduces your tax bill. That reduction is the tax shield. On $37,500 of interest at a 28 percent tax rate, the shield is $10,500, so the interest actually costs your business only $27,000, which is 5.4 percent of the debt rather than 7.5 percent.

What tax rate should I use?

Use the tax rate that applies to the profit the interest deduction offsets. For a New Zealand company that is usually the 28 percent company tax rate. A sole trader or partnership would use their marginal income tax rate instead. Only use the deduction if the business is profitable enough to actually claim it.

Balance Transfer Break-Even Calculator NZ

What is a credit card balance transfer?

You move the balance from a high-interest card to a new card offering a low or zero percent rate for a promotional period. It can save a lot of interest, but watch for a transfer fee and what the rate jumps to when the promo ends.

Is a balance transfer worth it?

It is worth it when the interest you save at the low rate over the promo period is more than the transfer fee, and you can clear or move the balance before the promo ends. This tool compares the saving against the fee for you.

What is the catch with balance transfers?

New purchases on the card may be charged at the standard rate, and the transferred balance reverts to a high rate once the promo ends. Paying it off within the promo period, and not spending on the card, is the key to coming out ahead.

Bridging Loan Calculator NZ

What is a bridging loan?

Bridging finance is a short-term loan that lets you buy a new home before your current one sells. You pay interest on the bridged amount until the sale settles and the loan is repaid.

How much does bridging finance cost?

It depends on the amount bridged, the interest rate, and how long the overlap lasts. The longer the two properties overlap, the more interest you pay, which is why a quick sale matters.

Is bridging finance risky?

The main risk is your current home taking longer to sell than expected, which extends the interest cost and can stretch your finances. Plan for a longer overlap than you hope for.

Car Loan Balloon Payment Calculator NZ 2026

What is a balloon payment on a car loan?

A balloon or residual payment is a large lump sum left at the end of the loan term. By deferring part of the loan to the end, your monthly repayments are lower, but you still owe the balloon amount in full at the end, and you pay interest on it the whole way through.

Does a balloon payment save money?

No. A balloon lowers the monthly payment but increases the total interest, because more of the loan stays outstanding for longer. This calculator shows the extra interest a balloon costs compared with a standard loan, so you can weigh lower monthly payments against the higher total.

How do I pay the balloon at the end?

At the end of the term you can pay the balloon as a lump sum, refinance it into a new loan, or sell or trade the vehicle and use the proceeds. If the car is worth less than the balloon, you would need to cover the shortfall, so it pays to keep the balloon below the expected resale value.

Car Loan EMI Calculator NZ

What is an EMI on a car loan?

EMI stands for equated monthly instalment. It is the fixed amount you pay every month to repay your car loan over the agreed term. Each payment covers both interest charged for that month and a portion of the outstanding principal. In the early months most of the payment goes to interest; towards the end of the loan, most goes to principal. The formula is: EMI = P x r x (1 + r)^n divided by ((1 + r)^n minus 1), where P is the principal loan amount, r is the monthly interest rate (annual rate divided by 12), and n is the number of monthly payments.

What interest rate should I use for a car loan in New Zealand?

New Zealand car loan interest rates vary by lender and borrower profile. As of 2026, rates typically range from around 8% per annum for borrowers with excellent credit through mainstream banks and credit unions, up to 18% or more through dealer finance or consumer lenders for borrowers with limited credit history. Credit unions and community lenders often offer lower rates than banks or dealer finance. Always compare the annual interest rate and any establishment or monthly account fees, as these affect the true cost of the loan.

Does a shorter or longer loan term save money?

A shorter loan term means higher monthly repayments but significantly less total interest paid over the life of the loan. For example, a $25,000 loan at 12.5% per annum costs $8,747 in interest over 60 months, but only $5,108 over 36 months. A longer term lowers the monthly payment but increases the total amount you repay. If you can afford the higher repayment, choosing a shorter term saves money. Check whether your lender allows early repayment without fees, as paying extra off the principal reduces interest further.

Credit Card vs Debit Card Cost Calculator NZ

Is a credit card cheaper than a debit card?

It depends on how you use it. If you clear the balance every month and earn rewards, a credit card can be cheaper or even pay you. If you carry a balance, the interest usually outweighs any rewards, making a low-fee debit card cheaper.

What costs does a credit card have?

Typically an annual or monthly fee, interest on any balance not paid in full, and sometimes foreign transaction fees. Against these you can offset rewards or cashback earned.

When is a debit card the better choice?

When you tend to carry a balance, since debit cards charge no interest, or when the card fee and interest exceed the rewards you would realistically earn.

Cost of an Overdraft Habit Calculator NZ

How much does an overdraft cost in New Zealand?

Arranged overdrafts charge interest, often around 15 to 23 percent a year on the overdrawn amount, plus a monthly or annual facility fee. Unarranged overdrafts can cost much more in fees, so the habit adds up over a year.

Is being overdrawn worse than a credit card?

It can be, once fees are included. A small persistent overdraft with a monthly fee can have a very high effective cost relative to the amount borrowed, especially if you are only a little into the red.

How do I stop relying on an overdraft?

Build a small buffer in your account, line up bills with paydays, and use a budget so spending stays under income. Even one month's buffer breaks the cycle of starting each pay period behind.

Credit Card Interest Calculator NZ

How is credit card interest calculated?

Interest is charged on the balance, usually daily, at the card's annual rate divided by 365. Each month the interest is added and your payment reduces the balance. Because interest compounds on what is left, paying only the minimum stretches the debt out for years.

Why does paying the minimum cost so much?

The minimum payment is often only 2 to 3% of the balance, much of which is interest. With little going to the actual debt, the balance barely moves and you pay interest for a very long time. Paying a fixed higher amount clears it far faster and cheaper.

What if my payment is less than the interest?

If your monthly payment is smaller than the monthly interest, the balance grows rather than shrinks and the card is never paid off. The calculator warns you when this happens so you can increase the payment.

Credit Card Minimum Payment Trap Calculator NZ

Why does paying the minimum take so long?

The minimum payment is usually a small percentage of the balance, often around 2% to 3%, or a few dollars, whichever is greater. As the balance falls, the required minimum falls with it, so each payment shrinks and most of it goes on interest. On a typical card this can stretch a few thousand dollars of debt into well over a decade and roughly double what you repay.

What is the minimum payment on a NZ credit card?

Most New Zealand cards set the minimum as the greater of a fixed dollar amount, often around $10, or a percentage of the balance, commonly 2% or 3%. Check your statement or cardholder agreement for the exact rule, then enter those figures here.

How do I get out of the minimum payment trap?

Pay a fixed amount each month rather than the shrinking minimum, and keep it the same even as the balance drops. Even a modest fixed payment clears the card far faster and saves a large amount of interest. A balance transfer or a lower-rate personal loan can also help. This calculator shows the difference a fixed payment makes.

Debt Avalanche Calculator NZ

What is the debt avalanche method?

You pay the minimum on every debt, then put all your spare cash toward the debt with the highest interest rate. When it is cleared, you roll that money onto the next-highest rate. It clears debt with the least total interest.

Is avalanche better than snowball?

The avalanche method saves the most interest and is usually fastest, because it kills your most expensive debt first. The snowball method targets the smallest balance first for quick wins and motivation. Avalanche wins on maths; snowball can win on willpower.

How do I make avalanche work?

Keep paying the same total amount every month even as debts clear, so the freed-up minimums roll onto the next debt. Avoid taking on new debt, and direct any extra cash to the highest-rate balance.

Debt Consolidation Calculator NZ 2026

What is the Debt Consolidation Calculator NZ 2026?

Calculate whether consolidating your debts into a single NZ loan saves money. Compare total interest paid, monthly repayment changes, and break-even point for your consolidation decision.

Is the Debt Consolidation Calculator NZ 2026 free to use?

Yes. The Debt Consolidation Calculator NZ 2026 is free to use on Calculate.co.nz, with no sign-up, paywall or account required.

Is the Debt Consolidation Calculator NZ 2026 made for New Zealand?

Yes. It is built for New Zealand and uses current New Zealand rules and rates where they apply. Results are indicative estimates and not financial advice.

Debt Consolidation vs Avalanche Calculator NZ

Is debt consolidation better than the avalanche method?

Consolidating into one lower-rate loan usually wins if the new rate is well below your current average rate and you do not stretch the term too long. The avalanche method keeps your existing debts and attacks the highest rate first, with no new loan or fees.

What is the risk with consolidation?

A longer loan term can lower your monthly payment but increase total interest, and freeing up your old cards can tempt new spending. Consolidation only helps if you do not run the debts back up and the rate is genuinely lower.

How does this calculator compare them?

It works out the monthly payment for a consolidation loan at your chosen rate and term, then applies that same monthly payment to your current debts at their average rate, and compares the total interest each path costs.

DSCR Calculator

What is a good DSCR?

A DSCR above 1.0 means income covers debt repayments, but most lenders want a buffer. Figures around 1.2 to 1.35 or higher are commonly preferred for commercial and investment lending. The higher the ratio, the more comfortably the income covers the debt.

What counts as debt service?

Debt service is the total principal and interest you must pay on your loans over the year. Include all relevant loans and both the interest and any required principal repayments. It is the full annual cost of servicing your debt.

How do I work out net operating income?

Take your income and subtract operating expenses such as rates, insurance, maintenance and management fees, but do not subtract loan repayments or tax. The result is net operating income. This is the cash available to service debt.

Debt Service Ratio Calculator NZ 2026

What is the Debt Service Ratio Calculator NZ 2026?

Calculate the Debt Service Ratio (DSR) for a New Zealand property investment. Divide net operating income by annual debt service cost to assess lending capacity and property viability.

Is the Debt Service Ratio Calculator NZ 2026 free to use?

Yes. The Debt Service Ratio Calculator NZ 2026 is free to use on Calculate.co.nz, with no sign-up, paywall or account required.

How is the debt service ratio worked out?

It divides your total debt repayments by your gross income over the same period, showing the share of income committed to servicing debt. Lenders use it as a standard affordability measure. Results are indicative estimates and not financial advice.

Debt Snowball Calculator

What is the debt snowball method?

You make the minimum payment on every debt, then put any extra money on the smallest balance first. When it is paid off, you roll its whole payment onto the next smallest, and so on. The payments snowball and clear your debts faster and faster.

Is snowball better than avalanche?

The avalanche method targets the highest interest rate first, so it usually saves a little more interest. The snowball targets the smallest balance first, giving quick wins that keep you motivated. The best method is the one you will stick to.

How do I become debt free faster?

Add as much extra as you can to the smallest debt, avoid taking on new debt, and keep the total payment the same even as debts clear. The freed up payments accelerate the remaining balances, which is the power of the snowball.

Debt to Equity Ratio Calculator

What is a good debt to equity ratio?

It depends heavily on your industry. Many businesses aim for a ratio between roughly 0.5 and 1.5, while capital intensive sectors run higher. Compare against peers and watch your own trend rather than a single target.

What should I include in total debt?

Total debt usually means interest bearing borrowings such as bank loans, overdrafts and the current portion of long term debt. Some analysts include all liabilities. Be consistent so your trend stays comparable over time.

Why does a high ratio mean more risk?

A high ratio means the business relies heavily on borrowing. Interest and repayments are fixed commitments that must be met even when trading is poor. This makes earnings and cash flow more volatile.

Guarantor Loan Calculator NZ

What does going guarantor mean?

As a guarantor you promise to repay someone else's loan if they cannot. If they default, the lender can pursue you for the guaranteed amount, including missed repayments, and may be able to claim against your assets, sometimes your own home.

How much am I liable for as a guarantor?

It depends on whether your guarantee is limited to a set amount or unlimited (the whole loan plus costs). A limited guarantee caps your exposure; an unlimited one does not. Always check the wording and get independent legal advice before signing.

Can I be released as a guarantor?

Sometimes, once the borrower has enough equity or income to stand alone, but it is not automatic and the lender must agree. Treat a guarantee as a long-term commitment, not a quick favour.

Hire Purchase Calculator NZ 2026

What is the Hire Purchase Calculator NZ 2026?

Calculate the true cost of any hire purchase agreement. Enter the item price, interest rate, and term to see monthly principal, interest, total cost, and total interest paid over the life of the contract.

Is the Hire Purchase Calculator NZ 2026 free to use?

Yes. The Hire Purchase Calculator NZ 2026 is free to use on Calculate.co.nz, with no sign-up, paywall or account required.

Is the Hire Purchase Calculator NZ 2026 made for New Zealand?

Yes. It is built for New Zealand and uses current New Zealand rules and rates where they apply. Results are indicative estimates and not financial advice.

Loan Comparison Calculator NZ 2026

What is the Loan Comparison Calculator NZ 2026?

Compare two loans side by side in NZ. Enter loan amounts, rates, and terms to see total interest, total cost, and which loan saves more money. Free NZ loan comparison tool.

Is the Loan Comparison Calculator NZ 2026 free to use?

Yes. The Loan Comparison Calculator NZ 2026 is free to use on Calculate.co.nz, with no sign-up, paywall or account required.

Is the Loan Comparison Calculator NZ 2026 made for New Zealand?

Yes. It is built for New Zealand and uses current New Zealand rules and rates where they apply. Results are indicative estimates and not financial advice.

Loan Interest Calculator

How is loan interest calculated?

Most personal loans are amortising, so interest is charged each month on the balance still owing. Early on, most of your payment is interest and little reduces the balance. As the balance falls, more of each payment goes to the principal, so the interest paid each month drops over time.

How can I pay less interest?

A shorter term raises the monthly payment but cuts the total interest sharply, because the balance is cleared faster. Paying extra when you can, or choosing a lower rate, also reduces the total interest. Try different terms in the calculator to see the effect.

Does this include fees?

No. This shows the interest from the rate only. Real loans may also charge an establishment fee, monthly account fees, or insurance, which add to the cost. Always compare the annual interest rate and the total cost across the full term.

Loan Payment Count Calculator

What is the Loan Payment Count Calculator?

Calculate exactly how many payments are required to pay off any loan. Enter present value, future value (target balance), and interest rate to find the number of payment periods needed.

Is the Loan Payment Count Calculator free to use?

Yes. The Loan Payment Count Calculator is free to use on Calculate.co.nz, with no sign-up, paywall or account required.

Is the Loan Payment Count Calculator made for New Zealand?

Yes. It is built for New Zealand and uses current New Zealand rules and rates where they apply. Results are indicative estimates and not financial advice.

Loan Top-Up True Cost Calculator NZ

What is a loan top-up?

A top-up is extra borrowing added to an existing loan, such as a personal loan or mortgage. It is convenient, but it adds interest over the remaining term, so the true cost is more than the amount you draw.

How is the true cost worked out?

The calculator amortises the top-up amount at your interest rate over the remaining term to find the extra monthly repayment, then the total interest is the sum of those payments less the amount borrowed.

Is topping up a mortgage cheap money?

The rate is usually low, but spreading a small purchase over 20 or 30 years can multiply the interest. For short-life purchases, a shorter loan term often costs far less overall even at a higher rate.

Overdraft Cost Calculator NZ

How is overdraft interest calculated?

Overdraft interest is charged on the overdrawn balance for each day you are in the red, at the annual rate divided by 365. So a larger overdraft, or more days overdrawn, costs more.

What fees come with an overdraft?

Many overdrafts have an establishment or monthly facility fee on top of interest. Unarranged overdrafts, where you go below zero without an agreed limit, can attract higher fees again.

How can I reduce the cost?

Clear the overdraft as quickly as you can, keep a small buffer in the account, and check whether a low-rate option would be cheaper than a persistent overdraft with fees.

Personal Loan vs Credit Card Calculator NZ

Is a personal loan cheaper than a credit card?

Usually yes for a planned, fixed amount. Personal loans have lower rates than credit cards and a set term that forces the balance down, so the total interest is normally much less than carrying the same amount on a card.

When is a credit card better?

For small amounts you can clear within the interest-free period, a card is effectively free. The card only becomes expensive when a balance is carried month after month.

What rate do personal loans charge in New Zealand?

Unsecured personal loan rates vary widely by lender and your credit history, often from around 7 to 20 percent. Credit card purchase rates are typically in the high teens to low twenties.