Work out a real number.
No account needed and nothing stored. Each one shows its working, because a number you cannot check is a number you cannot act on.
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Split your take-home pay into needs, wants and savings, and see how your spending compares.
See when your debts clear and the interest you pay, highest rate first or smallest balance first.
Add up what you own and what you owe to see your net worth.
Compare director salaries of £6,708, £12,570 and your own figure, with the rest taken as dividends.
Estimate your 2026/27 Self Assessment bill and what's due on 31 January and 31 July.
See the interest saved and the new end date from overpaying, set against keeping the cash in savings.
The tax calculators run on the same engine as the product.
Most calculators are marketing artefacts built separately from the product and simplified until they are indicative only. These run on the model that already handles salary, dividends, rent and corporation tax together, which is where simple calculators go wrong.