Split Banking for Property Investors in NZ: What You Need to Know

What Is Split Banking?

Split banking involves distributing your property loans across multiple lenders rather than concentrating all borrowing with a single bank. For instance, you might obtain a deposit from one bank using equity in your primary residence, then secure the remaining 80% through a second lender.

As property portfolios expand, this approach becomes increasingly valuable and offers multiple strategic benefits.

Why Use Split Banking?

Protect Your Access to Sale Proceeds

The primary advantage is safeguarding funds when selling an investment property. With single-bank lending, lenders can reassess situations following sales and retain proceeds to reduce overall debt. If that investment loan sits with a different institution, sale proceeds remain under your control.

Increase the Equity You Can Access

Banks differentiate between new builds and existing properties. New builds require only 10% deposits without standard loan-to-value restrictions. Once settled, they're reclassified as existing properties requiring 30% equity for future borrowing. Splitting lending across banks allows you to "ring-fence the loan for that new build with one bank, and preserve borrowing power with another" for subsequent investments.

Reset the Clock on Interest-Only Loans

Most banks cap interest-only periods at five years. Refinancing with another lender resets this timeline, maintaining investment flexibility and cashflow management.

Tap Into the Best Deals Across Banks

Different lenders offer varying rates, terms, and incentives. Split banking enables borrowers to cherry-pick the best deals from each bank rather than accepting uniform terms.

When Should You Use Split Banking?

Generally, you need at least two properties to implement this strategy effectively. While typically established from the outset, refinancing existing loans later can introduce split banking to established portfolios.

How to Set It Up

Option 1: From Day One

When purchasing your first investment, use one bank for deposits and a second for remaining purchase costs, keeping properties and lending clearly separated.

Option 2: Later in Your Investment Journey

If multiple properties exist with one lender, refinance one or more with different banks. Though break fees or legal costs apply, many institutions offer cashback incentives covering these expenses.

Things to Consider

While advantageous, split banking adds complexity. You must satisfy multiple banks' lending criteria, potentially complicating approvals with tight income. Different institutions hold varying views on property types and income sources, making broker guidance essential.

Real-World Example

Consider owning a home and two investment properties all mortgaged with one bank. Upon selling one investment property, the bank reassesses and retains $75,000 of $100,000 proceeds to reduce loan-to-value ratios, leaving only $25,000 accessible. With separate financing, the full amount would be available for reinvestment or diversification.

Is Split Banking Right for You?

It depends on individual circumstances. Active portfolio growth, maintaining future flexibility, or planning new build investments make split banking worth exploring. Consult a mortgage adviser experienced in investment lending strategies to evaluate whether this approach aligns with your financial objectives.