Question: how much does a business have to earn before paying tax?
Answer: The standard tax-free Personal Allowance is £12,500 (2020/2021) and no income tax is due until you earn more. Then: the basic income tax rate of 20% is payable on profits and other taxable income between £12,501 and £50,000. the higher rate of 40% applies to profits and other taxable income between £50,001 and £150,000.