Business
Business Calculators
Free UK business tools for freelancers, sole traders and small business owners. Calculate fees, tax, profit margins and day rates.
eBay Fee Calculator
Calculate eBay selling fees and profit
Etsy Fee Calculator
Work out Etsy listing and transaction fees
Freelance Tax
Tax calculator for freelancers and contractors
Profit Margin
Calculate gross and net profit margins
Hourly Rate
Work out what to charge per hour
Day Rate Calculator
Convert salary to day rate and back
Sole Trader vs Limited
Compare tax as sole trader vs limited company
Business Valuation
Estimate what your business is worth
Home Office Allowance
Claim tax relief for working from home
UK Business Tools — For Freelancers & Small Businesses
Whether you're selling on eBay, freelancing, or running a small business, these calculators help you understand your costs, tax obligations and profit margins. All calculations use current HMRC rates. For official guidance on starting a business, visit gov.uk/set-up-business.