After learning about diversification, I assumed it applied to everything. Not just companies and countries — but providers too.
So I spread things out:
- KiwiSaver with one provider
- My non-KiwiSaver investments with another
- My husband’s with a third
It felt messy, but it also felt safer. Like if one provider went bust, at least they couldn’t take everything with them.
For years, I pictured every deposit going to the provider — like a bank. If the provider collapsed, surely my money would collapse with it?
Then I actually looked at my bank transfer.
The Name That Changes Everything
When I transfer money to my investment account, the recipient isn’t my provider.
It’s “Adminis Custodial Nominees.”
That’s not gibberish. That’s proof you’re paying the custodian directly — not your provider.
Your provider never touches your money. They can’t. It goes straight to a separate entity whose main job is to hold it.
What a Custodian Actually Is
A custodian is a licensed financial institution that holds investments.
Think: Adminis (formerly known as MMC), Public Trust, BNP Paribas, Trustees Executors Limited.
Here’s what actually happens when you invest:
Your money goes to the custodian (that weird name on your bank statement). The custodian holds your investments in a legally separate trust. Your provider sends instructions: “buy this fund, sell that one.” But the provider never touches the money. They can only direct what happens to it.
If your provider disappeared tomorrow:
- Your investments stay with the custodian
- The FMA steps in and appoints a new manager
- Nothing is frozen or lost
Your provider manages your money. The custodian protects it. The separation is built into the bank transfer itself.
Why the Legal Structure Exists
New Zealand designed KiwiSaver after the Global Financial Crisis.
The government looked at what went wrong overseas and built in mandatory separation:
- Manager (the provider)
- Custodian (the holder)
- Trust (the legal wrapper)
This isn’t optional. It’s in the KiwiSaver Act.
Every provider — ANZ, Kernel, Milford, Booster, Simplicity — sits inside the exact same legal structure. Brand size doesn’t change this.
So when you use multiple providers for the roughly same type of fund, you’re not adding protection. You’re just duplicating the same legal safety net.
The Vaccine Analogy
Here’s the simplest way to think about it.
With meningococcal vaccines, MenB has two brands:
- Bexsero
- Trumenba
Different names — same strain coverage. You wouldn’t get both. It doesn’t make you safer.
But you would get:
- MenB
- MenACWY
Because they protect against different strains.
Investing is exactly the same.
Using three different providers for a very similar global index fund is like getting Bexsero and Trumenba. Two brands, more or the same, no ‘extra’ protection.
But using different providers because they offer genuinely different investment products? That’s MenB + MenACWY.
Different products = valid reason. Different brands = no safety benefit.
The custodial protection is identical regardless of which provider logo you see.
What About Provider Exits?
This has actually happened.
When ANZ sold their KiwiSaver business to Fisher Funds, members’ money stayed exactly where it was — with the custodian. Nothing got “transferred” in the way you’d move money between bank accounts. Fisher Funds just became the new manager sending instructions.
Members could switch providers if they wanted, but their money was never at risk during the transition.
What CAN Go Wrong?
Provider collapse isn’t your risk. But poor returns absolutely are.
The custodial structure protects you from losing your money if the provider goes bust. It doesn’t protect you from your provider choosing expensive funds, high fees, or bad investment strategies.
That’s why provider choice still matters — just not for the reasons most people think.
What Actually Matters When Choosing a Provider
Here are some of the key factors to consider when choosing a provider:
- Fees (the biggest drag on returns)
- Investment philosophy (active vs passive)
- Fund options (do they have what you need?)
- Ethical screens (if they matter to you)
- User experience (can you actually use it?)
That’s it.
The Bottom Line
Once I understood what “Adminis Custodial Nominees” meant, everything changed.
I stopped worrying that a provider could “take my money.” I stopped diversifying providers for the wrong reasons. I simplified everything — and investing became easier overnight.
So here’s the truth:
Use multiple providers when you need different products. Not because you think this is ‘safer’.
Your provider manages your investments. Your custodian protects them. And the proof is right there on your bank statement.
This post is for educational purposes only and is not personalised financial advice.