Tax Set-Aside Calculator
UK Limited Companies · Corporation Tax, PAYE & Income Tax
Tax year & period
e.g. incorporated June 2026 — select June 2026
Director salary
Using £1,047.50/month (£12,570/yr — NI secondary threshold)
Employees & employment allowance
Employment Allowance eligible — up to £10,500 offset against employer NI
Employee wages need to total at least £5,000/year (excluding director) before Employment Allowance kicks in — you need at least one employee earning above the secondary NI threshold
Single director company — Employment Allowance not available
Associated companies
A company is normally "associated" if it's under common control with this one at any point in the accounting period — e.g. the same person (or people, including spouses/family with shared business interests) owns 51%+ of both. Dormant companies can sometimes be excluded. This affects your CT thresholds — check with us if you're not sure how many to include.
Personal tax (optional)
Include dividend tax & payment on account
Estimates personal income tax on salary + dividends drawn
Monthly income & expenses
Enter turnover and expenses for each month. Director salary and employee wages are deducted automatically to give taxable profit.
| Month | Turnover (£) | Other expenses (£) | Dividends drawn (£) |
|---|
Your tax set-aside breakdown
2025/26
Monthly set-aside — totals vary by month based on actual profit
Treat this as a living plan, not a one-off number. Because CT is worked out on the whole year, entering figures for months that haven't happened yet as £0 will understate what you owe. Come back and re-run this every month or quarter as actual figures replace estimates — your set-aside amounts will adjust automatically as the year's picture becomes clearer.
Month-by-month breakdown
Disclaimer: These figures are estimates only, based purely on the information entered and current UK tax rates. They do not account for year-end adjustments — capital allowances, disallowed expenses, prior year losses, R&D relief, accruals/prepayments, or other adjustments your accountant makes when finalising your accounts — all of which can change your actual tax bill. This tool should be used to help you set aside a reasonable amount towards your tax liabilities, not as a substitute for your actual tax computation. It does not constitute tax advice. Always verify with your accountant before making financial decisions. aescott accepts no liability for decisions made based on these estimates.