The short answer
Income protection replaces a percentage of your whole income — commonly up to about 75% — while illness or injury stops you working. Mortgage repayment cover replaces one specific bill: your mortgage or rent payment.
Mortgage cover is cheaper and simpler. Income protection is more complete. If your repayments are $2,800 and your household runs on $6,200, mortgage cover is solving 45% of the problem.
Last reviewed 2026-07-30
| Income protection | Mortgage protection | |
|---|---|---|
| Benefit is sized to | Your income (up to ~75%) | Your mortgage or rent payment |
| Covers illness | Yes | Yes |
| Covers accident | Yes (usually offsets ACC) | Yes (usually offsets ACC) |
| Covers food, power, childcare | Yes — it is income | No |
| Covers redundancy | No | Sometimes, briefly |
| Premium | Higher | Lower |
| If you rent | Still fully useful | Covers rent on some policies |
| If your partner also earns | Sized to your share | Sized to the whole bill |
Work the actual numbers
The comparison stops being abstract the moment you write down two figures: your monthly mortgage or rent, and your total monthly outgoings. The gap between them is precisely what mortgage protection does not cover.
Run your own version through the income runway calculator.
Keeping the house is not the same as keeping the household running.
When mortgage protection is genuinely the right call
We are not going to pretend it is always the inferior product. It is the right starting point when:
- You have just bought your first home and the budget is genuinely at its limit. A cheaper policy you keep beats a better policy you cancel in eight months — and lapsed cover protects nobody.
- Your partner earns enough to cover living costs, and the mortgage is the specific thing that would break.
- Your occupation makes full income protection expensive and mortgage cover is what is actually obtainable.
- You want redundancy cover in the mix and can accept its narrow limits.
When income protection is worth the extra
- You are the household's main or only earner.
- You are self-employed or contracting — no sick leave, no employer scheme, and an ACC entitlement based on your last filed return rather than what you live on. See self-employed cover.
- You have children, where childcare and school costs are a large fixed line that does not pause.
- Your mortgage is small relative to your outgoings, which makes mortgage-only cover cover very little.
Do not buy both without checking
Because income protection is capped at a percentage of your income, holding a mortgage repayment policy alongside it can mean paying two premiums toward one ceiling — with the second one unable to pay out in full. It is not always wasteful, but it is worth someone checking the offset clauses before you run both.
A reasonable progression
Plenty of households sensibly start with mortgage protection at 28 when the deposit has just cleared them out, and move to full income protection at 35 when income and stability have improved. That is a good path. The failure mode is not starting there — it is staying there at 45 with two kids and double the outgoings, because nobody ever revisited it.
Common follow-up questions
Does mortgage protection pay off my mortgage if I die?
No. Mortgage repayment cover pays the monthly repayments while you cannot work. Clearing the balance in a lump sum on death is what life insurance sized to the mortgage does — and clearing it on diagnosis is what trauma cover does.
Is the cover the bank offered me the same thing?
Not necessarily. Cover arranged at the lending table is often sized to the lender's exposure rather than yours, sometimes has the bank as beneficiary, and is sometimes underwritten at claim time rather than at application — which means you find out whether you were covered at the worst possible moment. It is worth knowing which kind you have.
I rent. Is mortgage protection useless to me?
Some policies cover rent as well as mortgage payments, so it can still work. But for renters the case for full income protection is usually stronger, because rent is generally a smaller share of outgoings than a mortgage and the rest of your costs are the bigger exposure.
Keep reading
This page is general information about how insurance works in New Zealand. It is not regulated financial advice and it does not take your situation into account. For advice about your own cover, talk to a licensed financial adviser.