Your credit score is one of the first things a bank checks when you apply for a mortgage. A poor credit history won’t necessarily prevent you from getting a home loan — but it may reduce your options, push you to non-bank lenders, or result in a higher interest rate. Understanding how NZ credit scoring works and what lenders actually look at lets you enter the process prepared.
NZ credit scores are issued by Equifax (scale 0–1,000) and illion (0–1,200). Major banks typically expect a minimum score around 500 for mortgage approval, with most approved borrowers at 600 or above. Scores below 500 usually require non-bank lenders — available but at higher interest rates.
How Credit Scores Work in New Zealand
NZ has two main credit bureaus:
- Equifax NZ (formerly Veda) — most widely used by banks and lenders
- illion (formerly Dun & Bradstreet) — used by some lenders
Both agencies assign a score based on your credit history. Equifax uses a score from 0 to 1,000 (higher is better). illion uses a scale from 0 to 1,200.
You can check your credit score for free:
- Equifax: equifax.co.nz
- CreditSimple (powered by illion): creditsimple.co.nz
Under the Privacy Act, you’re entitled to one free credit report per year from each bureau.
What’s Included in Your Credit Score
Your credit score reflects:
| Factor | What it captures |
|---|---|
| Repayment history | Whether you’ve made payments on time |
| Credit enquiries | How many times you’ve applied for credit recently |
| Credit accounts | Types and number of active accounts |
| Account age | How long your credit history is |
| Defaults and judgments | Unpaid debts that have been recorded |
| Bankruptcies or insolvencies | Formal insolvency events |
What is NOT included:
- Your income or savings
- Your employment history
- Bank account balance
- Age, gender, address, or ethnicity (by law)
NZ Credit Score Ranges (Equifax)
| Score range | Rating | Mortgage impact |
|---|---|---|
| 800–1,000 | Excellent | Full access to all lenders; best rates available |
| 700–799 | Very good | All major banks; competitive rates |
| 500–699 | Average | Most banks will lend; some may add conditions |
| 300–499 | Below average | Major banks may decline; non-banks available |
| 0–299 | Poor | Most mainstream lenders will decline; specialist options only |
What Banks Actually Look For
Banks don’t only look at your score number — they review your full credit report, which includes:
Defaults A default is recorded when a creditor gives up trying to recover a debt and registers it formally. Even a small default (a $50 unpaid gym membership) can affect mortgage approval. Defaults typically remain on your record for 5 years from the date they’re recorded.
Late payments Repeated missed or late payments signal unreliability to lenders — even if no default was lodged. Banks review 6–24 months of payment history.
Credit enquiries Every time you apply for credit (car loan, credit card, Buy Now Pay Later), a hard enquiry is recorded. Multiple enquiries in a short period signal financial stress or desperation to lenders. Space out credit applications and avoid applying for new credit in the 6–12 months before a mortgage application.
Buy Now Pay Later (BNPL) Afterpay, Laybuy, and similar services may not appear on your credit report — but some do, and lenders are increasingly asking borrowers to disclose them. Beyond credit score impact, BNPL reduces your assessed serviceability.
Court judgments Any court judgment against you for unpaid debt is a significant red flag and will likely result in declined applications with major banks.
Minimum Credit Score for a Mortgage in NZ
Banks don’t publish official minimum scores. However:
- Major NZ banks (ANZ, ASB, BNZ, Westpac, Kiwibank): Generally expect a score in the 500–600+ range at minimum. Below 500, approval becomes unlikely with mainstream lenders.
- Non-bank lenders (Liberty Financial, Resimac, Avanti): Can work with lower scores but charge higher rates — typically 1%–4% above bank rates.
- Credit unions and building societies: May have more flexibility with members.
If you’ve been declined by a bank due to credit history, a mortgage broker can direct you to lenders who work with impaired credit. See Bad Credit Mortgage NZ.
How to Improve Your Credit Score Before Applying
Step 1: Get your credit report and check it Look for any errors, outdated defaults, or accounts you don’t recognise. Dispute anything incorrect directly with the credit bureau — errors do occur.
Step 2: Pay all existing debts on time — without exception Every on-time payment improves your score over time. Even one missed payment in the 3 months before application can flag your file.
Step 3: Reduce credit card limits Lenders assess the full credit limit as potential debt. Reduce limits on cards you don’t use heavily. Closing old accounts removes the history — so reduce the limit rather than closing if the account is old.
Step 4: Don’t apply for new credit Avoid car loans, personal loans, new credit cards, or BNPL accounts in the 6–12 months before a mortgage application. Each application adds a hard enquiry.
Step 5: Pay off or resolve any defaults A paid default is still listed on your credit file, but it looks better than an unpaid one. If you have old defaults, pay them and get confirmation that the creditor has updated the record.
Step 6: Build a track record If you have a thin credit history (few accounts, recent to NZ), spend 6–12 months building it: use a credit card responsibly, pay every bill on time, show a consistent pattern.
Credit History as a New Migrant
If you’ve recently arrived in NZ, you may have no NZ credit history — even if you had an excellent record in your home country. NZ credit bureaus can’t access overseas credit files.
Starting from scratch, you can build a NZ credit history by:
- Opening a NZ bank account and using it regularly
- Getting a NZ credit card with a modest limit and paying it in full each month
- Setting up automatic bill payments (power, phone, internet) to avoid missed payments
After 12–24 months of consistent behaviour, your NZ credit file will be sufficient for most lenders. See Mortgage as a New Migrant NZ for other migrant-specific considerations.
Frequently Asked Questions
What credit score do I need to get a mortgage in NZ?
There is no published minimum, but major NZ banks typically decline applications below 500 on the Equifax scale. Most approved borrowers sit at 600+. Below 500, non-bank lenders such as Liberty Financial, Resimac, or Avanti Finance may lend at higher rates — usually 1%–4% above standard bank rates.
How can I check my credit score for free in NZ?
Check your Equifax score for free at equifax.co.nz. Your illion score is available free at creditsimple.co.nz. Under the Privacy Act, you’re entitled to one free credit report per year from each bureau. Check both, as different lenders use different bureaus.
Does Afterpay or Laybuy affect my credit score in NZ?
BNPL services may or may not appear on your credit file depending on the provider. Regardless, banks increasingly ask you to disclose all BNPL accounts, which reduces your assessed serviceability even if they don’t formally appear on the credit report.
How long does a default stay on my credit file in NZ?
A default stays on your NZ credit file for 5 years from the date it is recorded. A paid default is viewed more favourably than an unpaid one by lenders, but both remain on file for the full 5-year period.
Can I get a mortgage with bad credit in New Zealand?
Yes — non-bank lenders such as Liberty Financial, Resimac, Avanti Finance, and First Mortgage Trust can lend to borrowers with impaired credit. A mortgage broker is the most effective way to access these lenders, as they don’t widely advertise. Expect rates 1%–4% above major bank rates.