Buying guide

Revolving credit mortgages: what are they & how do they work?

Everything you need to know about this useful but potentially expensive home loan feature

Ben Tutty
Last updated: 29 August 2025 | 5 min read
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A revolving credit mortgage treats part of your home loan like a large overdraft, offering flexibility to deposit and withdraw funds. This can help you pay off your mortgage faster by making unlimited extra repayments and reducing the interest you pay.

However, this flexibility requires strong financial discipline to avoid overspending. These facilities often have higher variable interest rates than fixed-rate loans. They are best suited for disciplined savers, and seeking advice from a mortgage broker is recommended.

What is a revolving credit mortgage?

The benefits of a revolving credits

May help you pay your mortgage off faster

Extra flexibility

Revolving credits can be great but they can be expensive if they're not managed well.

Lower interest rate than a bank overdraft

Only pay interest on money you’ve used

The drawbacks of revolving credits

You need to be disciplined

They’re expensive

Make sure you do your homework before applying for a revolving credit.

Making a revolving credit work for you

Get expert advice before signing on the dotted line

Author

Ben Tutty Ben Tutty
Content Writer