Tax Reserve Calculator
Turn your latest monthly sales, expenses and VAT figures into an estimated set-aside. Built for UK and Irish businesses, with a manual planning mode elsewhere.
Example Monthly Set-Aside
UK company with £6,000 monthly sales and £2,000 monthly expenses
Planning estimate. Payroll, salary and dividends are not included.
Keep Tax Money Separate From Stock Money
A regular transfer makes a future bill easier to handle. The calculator gives you a planning figure and shows what went into it.
Profit Tax Estimate
Estimate income tax and self-employed contributions, or corporation tax, for the supported UK and Irish setups.
VAT From Your Records
Use VAT charged on sales and reclaimable VAT paid on purchases. VAT is never guessed from your profit.
Manual Mode Elsewhere
Use your account currency and figures supplied by your bookkeeper or accountant. The tool does not invent local tax rules.
How The Tax Reserve Calculator Works
Choose the setup that matches your business, add monthly figures, then review the monthly and annual estimates.
Step 1
Choose Your Country And Business Type
UK sole traders can choose Scotland or the rest of the UK. Companies add the accounting details needed for corporation tax. Ireland has separate sole trader and company calculations.
- UK sole trader or limited company
- Irish sole trader or limited company
- Manual planning mode for other countries
Step 2
Add Monthly Sales And Expenses
Enter average monthly sales and allowable business expenses. The calculator turns the monthly profit into an annual estimate, then asks for any extra details your setup needs.
- Monthly sales and expense inputs
- Other annual taxable income for sole traders
- Conditional details for UK companies
- Separate non-trading profit for Irish companies
Step 3
Add VAT And Review The Breakdown
If you are VAT registered, enter output VAT from sales and reclaimable input VAT from purchases. The result keeps VAT and profit tax separate.
- VAT due or expected repayment shown separately
- Suggested monthly and annual transfers
- Profit-tax component breakdown
- Save the estimate for a later update
What The Estimate Does Not Include
The calculator has a clear boundary. It helps with a regular set-aside, but it does not prepare or file a tax return.
- Payroll and PAYE
- Director salary and dividends
- Reliefs and deductions not entered
- Filing dates and payment reminders
Ask your accountant or tax adviser to confirm your full position, payment dates and the amount you owe.
Frequently Asked Questions
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How to work the numbers out yourself, with real prices you can copy.
Build Your Monthly Tax Set-Aside
Use your latest sales, expenses and VAT figures to plan a regular transfer, then check the estimate with your accountant.