Financial Calculators
Eleven calculators for UK money questions, from what your salary is actually worth to how much of your house you own. Every one works in the browser with no account and no sign-up.
Each calculator states its assumptions on screen and shows a worked example, so you can see how it reached its answer rather than taking a number on trust. Nothing you type is transmitted or saved — the arithmetic runs in your browser and closing the tab discards it. None of it is financial advice.
Plan your money
Where your pay goes, how big a buffer needs to be, and what a target costs each month.
Pay and tax
What actually reaches your account, for the 2026/27 tax year.
Property
What your home is worth on paper, and what you could borrow against it.
Spending
The costs that repeat whether you think about them or not.
On the way
More UK calculators are in progress. If one of these would be useful to you sooner, say so and it moves up the list.
Calculators answer a question once
A calculator tells you where you stand on the day you fill it in. earmarkIQ keeps the same numbers current: it reads your pay and committed costs from your bank via Open Banking, sorts them without being asked, and flags it when something moves — a subscription price, a pay rise, a bill that has drifted.