Money decisions, worked out

Understand what you can afford

Calculators for the decisions people actually face: what a mortgage costs, what a house you can carry, whether renting beats buying, and how long a debt takes to clear. Every assumption is shown and every one of them is yours to change.

Start here

Can I afford this?

Puts a purchase against the rest of your month: what comes in after deductions, what the purchase costs to carry, what is left, and whether that leaves room to absorb a surprise.

The rest of them

See all thirteen calculators

What these are, and what they are not

Every figure here is an estimate built from rules that were published somewhere and from assumptions you supply. Where a number comes from a government, it is transcribed from that government's own page and the date somebody checked it is on the page. Where a number is a convention rather than a rule, it says so and you can change it. Where something could not be verified, it is left out and the gap is named.

None of this is financial advice and none of it is a lending decision. A lender underwrites a person rather than a ratio, and a pre-approval is the only number that carries weight. What these calculators can do is tell you roughly where you stand before you talk to anyone, and show their working so you can decide whether to believe them. The methodology sets out how each one works, and sources lists every authority behind the figures.

Nothing you type leaves your browser

These calculators run entirely on your device. Your income, your balances and your savings are never sent anywhere, never stored, and never written into a link. There are no accounts, and there is nothing to sign up for.

Two sister sites

These calculators answer what your income supports. Two related sites answer the questions on either side of that one.