How much should I set aside for tax? Lucy Cohen 27 February 2026 14:09 Updated One of the most common issues for business owners is not putting enough money aside for tax.The amount you should set aside depends on: Your business structure Your level of profit Whether you are VAT registered Whether you have employees Below is a simple breakdown.If you are a sole traderAs a sole trader, you pay: Income Tax on your profits National Insurance You do not pay tax on turnover. You pay tax on profit, which is your income minus allowable business expenses.A common rule of thumb is to set aside between 20 percent and 30 percent of your profit for tax. If your profits increase into higher rate bands, this may need to be higher.You may also need to make payments on account, which means paying part of next year’s tax in advance.If you run a limited companyA limited company pays Corporation Tax on its profits.As a director, you may also pay personal tax on: Salary Dividends The company’s Corporation Tax is separate from your personal tax.A common approach is: Set aside a percentage of company profit for Corporation Tax Separately plan for any personal tax due on dividends Corporation Tax is currently charged at rates set by HMRC, depending on company profits. You can check current rates here:https://www.gov.uk/corporation-tax-ratesIf you are VAT registeredIf you are VAT registered, remember: VAT you collect from customers is not your income It belongs to HMRC You should keep VAT funds separate so you are prepared when your VAT payment is due.Why setting money aside mattersTax bills are often due months after profits are earned.If you do not set money aside as you go, you may face: Large unexpected bills Cash flow problems Late payment penalties A simple and effective habit is to move a percentage of your profit into a separate savings account each month. Related to tax