What is an offset mortgage & is it for you?

Feature article

What is an offset mortgage & is it for you?

Everything you need to know about this handy mortgage feature.

26 November 2025

Hannah Hilliam

What is an offset mortgage?

Example: Kev’s offset loan

Is an offset mortgage a good idea?

The benefits of an offset mortgage

What is the downside of an offset account?

Which banks offer offset mortgages in NZ?

Offset mortgage vs revolving credit: what’s the difference?

Offset mortgage vs revolving credit
Offset mortgageRevolving credit
Account structureAccount structureLoan is separate from linked everyday/savings accounts.Loan is separate from linked everyday/savings accounts.One big account that functions as your loan and everyday spending account (like a large overdraft).One big account that functions as your loan and everyday spending account (like a large overdraft).
Savings accessSavings accessEasy access to linked savings; your withdrawals immediately increase the interest charged.Easy access to linked savings; your withdrawals immediately increase the interest charged.Your everyday balance reduces the interest. You can redraw funds up to your limit.Your everyday balance reduces the interest. You can redraw funds up to your limit.
Discipline requiredDiscipline requiredModerate discipline. You still have structured principal repayments.Moderate discipline. You still have structured principal repayments.High discipline. Easy to overspend or not pay down the principal if not careful.High discipline. Easy to overspend or not pay down the principal if not careful.
Best forBest forPeople with solid, consistent savings/emergency funds, or investors.People with solid, consistent savings/emergency funds, or investors.High-income earners with irregular cash flow who are highly disciplined. Often used to fund renovations.High-income earners with irregular cash flow who are highly disciplined. Often used to fund renovations.

Offset mortgage FAQs

Talk to a mortgage professional

Author

Hannah Hilliam Hannah Hilliam