The Mortgage stress test calculator
What a lender checks before it says yes: that the payment still works if rates rise by a few points. The gap between the rate you would pay and the rate you are tested at is where most applications are lost.
Your income and your deposit
2 · What the lender assumes
The defaults are common across lenders. Change them to match the one you are talking to.
Everything is worked out in your browser. No figure is sent anywhere.
How to use the Mortgage stress test calculator
- Type your income and deposit, then change the stress figure in the lender section to the one your lender uses.
- Type your own numbers. The result updates as you type.
- Copy the result, or change an assumption and watch what it does.
Frequently asked questions
What rate will I be tested at?
Usually your rate plus one to three points, and lenders differ. A short fixed rate is generally tested harder than a long one, because the borrower is exposed sooner. Change the stress figure to match the lender you are talking to, and watch what it does to the amount: a three point test on a four and a half percent rate can take a fifth off what you are offered.
How exact is it?
The arithmetic is exact and rounded the way money is, at the cent. What it cannot know is anything specific to you, so read it as the ordinary case rather than as advice.
Is anything uploaded?
Every figure is worked out in your browser. Nothing is uploaded, there is no sign-up, and no result is stored anywhere but on your own device.
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