Open Banking in New Zealand 2026: What It Is and Is It Safe?

 

Open banking has moved from a nice idea to actual law in New Zealand. If you’ve applied for a mortgage recently, or you’re about to, this is worth understanding, because it’s changing how quickly and how simply your financial information can be verified.

What Open Banking Actually Means

Open banking lets you securely share your own banking data, things like balances, transactions, and account details, with trusted providers you choose, such as budgeting apps, accounting software, or a mortgage adviser gathering information for a loan application. You stay in control the whole time. Nothing is shared without your direct consent, and you can switch that access off whenever you like.

The Law Behind It

Open banking in New Zealand now sits under the Customer and Product Data Act 2025, which received Royal Assent in March 2025. Banking was chosen as the first sector to come under this new Consumer Data Right, and the rollout has been happening in stages:

  • From 1 December 2025, ANZ, ASB, BNZ, and Westpac became legally required “data holders” under the Act.
  • Kiwibank is joining on a phased basis, starting with payments from 1 June 2026, and full account data by December 2026.
  • Banks are not allowed to charge you a fee for sharing your data through this system.
  • Any provider wanting to access your data must first become an accredited requestor, meeting strict security, insurance, and dispute resolution standards before they’re allowed anywhere near your information.

This is a genuine shift from how things worked previously, where some providers relied on older, less secure methods to access banking data. The new law brings everyone onto one properly regulated, government backed standard.

How This Makes Life Easier When Working With a Mortgage Adviser

For anyone applying for a home loan, this is where open banking becomes genuinely useful. Historically, gathering bank statements has meant hunting through months of PDFs, downloading them one by one, and hoping nothing important got missed. With your consent, open banking allows that information to be pulled through securely and directly, cutting out a fair bit of admin on your end.

It also means a clearer, faster picture of your actual spending and serviceability, which can speed up how quickly your application comes together. As the Minister overseeing this legislation put it when the law passed, tasks like manually combing through months of bank statements for a mortgage application could soon be a thing of the past.

How the Process Works for You as a Customer

Here’s what actually happens when you use open banking:

  1. You choose a provider. This might be your mortgage adviser’s platform, a budgeting app, or an accounting tool.
  2. You give explicit consent. You’re taken to your own bank’s secure login page, not a third party page, to approve exactly what’s being shared and for how long.
  3. Your bank confirms and shares only what you approved. This might be a single snapshot of your accounts, or ongoing access if you’ve chosen that option.
  4. You stay in control. You can view, manage, and revoke this access at any time, directly through your bank or the provider.

Because the authorisation happens directly between you and your bank, no third party ever sees or stores your actual online banking password. That’s one of the most important safety upgrades this new system brings.

Is It Actually Safe?

This is the question most people want answered before they’ll use it, and the honest answer is, this new regulated system is considerably safer than what came before it.

  • You never hand over your banking password to a third party. Authentication happens directly with your bank, the same login you already trust.
  • Providers must be accredited. Anyone requesting your data has to meet government set standards for security, insurance, and how they handle disputes, before they’re allowed to operate.
  • Bank grade security standards apply. Providers operating in this space are expected to meet recognised international security certifications and use strong encryption to protect your data both in transit and at rest.
  • You can revoke access instantly. If you change your mind, or stop using a service, you can cut off data access immediately, and providers are required to honour that straight away.
  • No selling your data. Reputable providers operating under this regime are contractually barred from selling or renting your information for marketing or research purposes.

Frequently Asked Questions

Do I have to use open banking to apply for a mortgage? No, it’s entirely optional. You can still provide your own bank statements manually if you’d prefer. Open banking simply offers a faster, more convenient alternative.

Can a provider access my account without my permission? No. Every connection requires your explicit consent, given directly through your own bank’s login, and you can see and manage exactly what’s been approved at any time.

What happens if I stop using a provider’s app? You can revoke your consent at any time, either through your bank or the provider itself, and access is cut off immediately.

Curious How This Could Simplify Your Mortgage Application?

If you’re getting ready to apply for a home loan, open banking can make gathering the paperwork a lot less painful. Get in touch and we’ll walk you through how it works for your specific situation.

 

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