Key Takeaways
Working out how much life insurance you need in NZ is simpler than most people expect. You add up what your family would need if you died, subtract what you already have, and the gap is roughly the amount of life cover worth considering.
- Start with your debts, especially the mortgage, then add future costs such as raising children and replacing your income for a set number of years.
- Subtract savings, KiwiSaver balances and any existing cover, including life cover through work.
- A common rule of thumb is around ten times the highest earner's annual income, but a needs-based calculation is usually more accurate.
- Your life cover need usually falls over time as the mortgage shrinks and children become independent, so review your cover regularly.
- Choosing between stepped and level premiums affects what your cover costs over the long term, not how much cover you need.
Why the amount of life insurance matters
Life insurance pays a lump sum to your family or estate if you die, and many policies also pay early if you are diagnosed with a terminal illness. The amount you choose is the single biggest decision you make, because too little leaves your family short and too much means paying for cover you do not need.
Many New Zealanders have no life cover at all. Research commissioned by the Financial Services Council found that 33% of New Zealanders had life insurance, down from 35% the year before, and life insurance penetration as a share of GDP sits well below the OECD average, as reported by Chatswood. For those who do hold cover, the question is often whether the sum insured still fits their life today.
How much life insurance do I need in NZ? The simple method
The clearest way to answer how much life insurance you need in NZ is a needs-based calculation. It takes four steps and you can do a first pass with a pen and paper.
Step 1: Add up your debts
List everything that would need to be repaid or would become a burden for your family. For most households the mortgage is the largest item. Add car loans, personal loans, credit cards and any business debt you have personally guaranteed.
Step 2: Add future living costs
Think about how long your family would need financial support. A common approach is to replace your after-tax income for a set number of years, often until the youngest child finishes school or until a surviving partner could reasonably manage on their own. Include childcare that would no longer be covered by a parent at home, and education costs you want to protect.
Step 3: Add final and one-off costs
Funeral costs, legal fees to settle the estate and a buffer for the first few months are easy to forget. Some families also want to leave enough for a partner to take time off work.
Step 4: Subtract what you already have
Take away cash savings, investments you would be happy to use, KiwiSaver balances that would pass to your estate and any life cover you already hold, including group life cover through your employer. Remember that work cover usually ends when you leave the job, so it is worth treating as a bonus rather than the foundation of your plan.
The figure left over is a reasonable starting point for your life cover. Consumer NZ also suggests a rule of thumb of around ten times the highest earner's annual income, which can be a useful sense check against your own calculation, as explained in its guide to life insurance.
A worked example (illustrative only)
The example below uses round, illustrative numbers to show how the method works. It is not a recommendation for any particular household.
| Item | Illustrative amount |
|---|---|
| Mortgage balance | $600,000 |
| Car loan and credit card | $20,000 |
| Income replacement: $60,000 a year for 10 years | $600,000 |
| Funeral and estate costs | $20,000 |
| Total need | $1,240,000 |
| Less savings and KiwiSaver | -$90,000 |
| Less life cover through work | -$150,000 |
| Indicative life cover gap | $1,000,000 |
In this illustration the household might look at around $1 million of personal life cover. If the work cover was left out because the person may change jobs, the figure would be closer to $1.15 million. These choices are personal, which is why the calculation is a guide rather than a final answer.
Life insurance for parents in NZ
Parents usually have the biggest life insurance need because children depend on them for many years. The younger the children, the more years of support you may want to cover.
Covering both parents
A common gap is only insuring the parent who earns the higher income. If a parent at home with the children died, the surviving parent may need to pay for childcare, school pick-ups and help around the house, or cut back on work. Life cover on a parent at home can protect against that cost, even though there is no salary to replace.
Single-income and blended families
Single-income families often rely heavily on one person, so the income replacement part of the calculation matters even more. Blended families should also check who owns each policy and who each policy is meant to pay, so the money goes where it is intended.
How your life cover need changes over time
Your need for life cover is not fixed. It usually peaks when the mortgage is largest and the children are youngest, then falls as debt is repaid and the children become independent.
- Buying a home: a new or larger mortgage often means increasing cover. Our guide to mortgage protection insurance in NZ explains how life cover and repayment cover work alongside a home loan.
- Having children: each child adds years of future costs.
- Paying down debt: as the mortgage falls, your cover may be bigger than you need.
- Children leaving home: many people can reduce cover and lower their premium at this stage.
Reviewing your cover at each of these moments helps keep the sum insured in line with real life, rather than a figure set years ago.
Stepped vs level premiums
Once you know how much life cover you need, the next decision is how you pay for the cover. With stepped premiums, the cost starts lower and usually rises each year as you age. With level premiums, the cost starts higher but stays fixed for an agreed period, often until a set age, depending on the policy.
Stepped premiums can suit people who expect their need for cover to fall within a shorter period. Level premiums can suit people who expect to hold cover for many years and want more predictable costs. Consumer NZ notes that the better option depends on how long you need the policy and what you can afford over the long term.
Common mistakes when choosing a life cover amount
- Relying only on work cover: group life cover through an employer usually ends when you leave the job, and the amount may not match your family's needs.
- Forgetting inflation: living costs rise over time. Many policies offer inflation adjustments that increase the sum insured each year, usually with a matching premium increase.
- Never reviewing the amount: cover set when the children were babies may be too high or too low years later.
- Ignoring other cover types: life insurance only pays on death or terminal illness. If you are more likely to be off work sick, trauma insurance and income protection may matter just as much.
- Getting the disclosure wrong: answer every health and lifestyle question carefully when you apply, because an incorrect answer can affect a claim later.
How SHARE - The Advisory can help
We help you work out how much life insurance you need, compare cover across insurers and set up your policy so the right people are paid. We also review your cover as your mortgage, family and income change, so you are not paying for more than you need. Learn more about our life insurance advice or contact us to talk through your numbers.
Conclusion
The answer to how much life insurance you need comes down to a simple sum: what your family would need, minus what you already have. Start with your debts, add the years of support your family would rely on, include one-off costs and subtract savings and existing cover.
Use the ten times income rule as a sense check, choose a premium structure that fits how long you need cover, and review the amount whenever your life changes. If you are weighing up who to talk to, read our guide on how to choose a life insurance adviser in New Zealand. This article is general information only and is not personalised advice.
Frequently Asked Questions
How much life insurance do I need in NZ?
Add your debts, the years of income your family would need and one-off costs, then subtract savings and existing cover. The gap is a reasonable starting point for your life cover.
Is 10 times my salary enough life insurance?
Ten times the highest earner's income is a common rule of thumb and a useful sense check. A needs-based calculation that reflects your mortgage, children and savings is usually more accurate.
Do I need life insurance if I have life cover through work?
Work cover is helpful but usually ends when you leave the job, and the amount may not match your family's needs. Many people hold personal cover as well.
Does a stay-at-home parent need life insurance?
Often, yes. If a parent at home died, the family may need to pay for childcare and help, or the other parent may need to reduce work hours.
Should I reduce my life cover as my mortgage goes down?
Many people do. As debt falls and children become independent, a review can bring your cover in line with what you need now and may lower your premium.