Most freelancers set their rates in one of two ways: they copy what other freelancers charge, or they guess a number that feels reasonable. Both approaches produce the same outcome — a rate that may or may not cover your actual costs, and which you struggle to defend when clients push back.
There is a better approach. Work backwards from what you need to earn, account for the realities of self-employment, and arrive at a rate that is both defensible and sustainable. Here is the formula.
Decide what you want to take home each month after tax. Be honest and specific — include your mortgage or rent, bills, food, savings, pension contributions, and a realistic amount for personal spending. This is not a wish figure; it is the minimum sustainable income your freelance business must generate.
As an example, let us use a target take-home of £3,500 per month (£42,000 per year).
As a self-employed freelancer, you pay income tax and Class 4 National Insurance on your profits. To take home £42,000, you need to earn considerably more gross.
Using 2025/26 UK tax rates for a sole trader:
To take home £42,000, a sole trader typically needs a gross profit of approximately £55,000–£58,000 depending on their specific deductions. Use a UK freelance tax calculator to get your precise gross-up figure.
Your day rate needs to cover not just your personal income and tax, but the real costs of running your freelance business:
A realistic business expense total for a UK freelancer is £3,000–£8,000 per year depending on profession and working setup. Add this to your required gross income.
This is where most freelancers make a critical mistake. A year has 365 days. Subtract:
That leaves approximately 180–200 genuinely billable days per year — not 260. Most freelancers are surprised how low this number is when they calculate it properly. Using 260 working days as your denominator when only 190 are billable means your rate is 37% too low before you start.
Day rate = Total required gross income ÷ Billable days
Using our example:
This is your floor — the minimum rate at which your freelance business is financially sustainable. Add a 10–20% buffer on top for scope creep, slow periods, and business growth.
| Role | Junior | Mid-level | Senior |
|---|---|---|---|
| Web Developer | £30–£50/hr | £50–£90/hr | £90–£150/hr |
| Graphic Designer | £25–£40/hr | £40–£65/hr | £65–£90/hr |
| Copywriter | £30–£45/hr | £45–£70/hr | £70–£100/hr |
| SEO Consultant | £40–£60/hr | £60–£90/hr | £90–£120/hr |
| Photographer | £50–£75/hr | £75–£120/hr | £120–£150/hr |
| UX Designer | £35–£55/hr | £55–£85/hr | £85–£110/hr |
| Marketing Consultant | £40–£60/hr | £60–£90/hr | £90–£120/hr |
| Project Manager | £35–£55/hr | £55–£80/hr | £80–£120/hr |
If your formula-derived rate sits significantly below market benchmarks, you may be underestimating your expenses or being too conservative on income. If it sits above market, consider whether your niche expertise or track record justifies a premium — it often does.
Setting the right rate is only half the equation. You also need to track your actual billable hours accurately to know whether you are hitting your targets. The commonest freelancer financial mistake is setting a good rate and then losing track of how many hours each project actually takes.
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See FreelanceFlow Pro — £15 →Your rate is not a permanent number. Review it at least annually, and raise it when:
Undercharging by £50 per day costs you £10,000 per year. The discomfort of raising rates is almost always smaller than the long-term cost of not doing so.