Your figures
Result
How this calculator works
Start from the number you want to keep, not the number you want to charge. The calculator adds your business overheads to that target, grosses the total up for the tax you will set aside, and divides what remains by the hours you can genuinely sell: your working weeks after holidays, times days, times hours, times the share of those hours that are actually billable to a client. The result is a floor — the hourly and day rate below which the arithmetic of your year does not work.
Every input is a place where wishful thinking hides. Five weeks off is realistic; zero is a plan to burn out on schedule. The billable share is the biggest lever of all: at 100% the rate looks wonderfully low, but nobody bills every hour — proposals, admin, marketing, invoicing and the gaps between projects are unpaid hours your rate must carry. Sixty percent is a common honest figure for established freelancers; new practices often run lower.
Good practice and limits
Treat the result as a floor for negotiation, not a price list. Work you want for strategic reasons can go below it occasionally, but knowing the floor tells you the size of the subsidy you are giving. Revisit the inputs once a year: overheads creep, tax bands move, and a rate set three years ago is usually a quiet pay cut.