Why dividing your salary by 2,080 is wrong
The most common mistake new freelancers make is taking the salary they used to earn and dividing by 2,080 (52 weeks of 40 hours). That rate ignores four things an employer used to absorb: the tax you now pay yourself, the equipment and software you now buy, the hours you spend finding work and sending invoices, and the weeks you take off. Someone leaving a $60,000 job and charging $29 an hour will earn far less than $60,000 and work more hours doing it.
This calculator fixes each of those gaps explicitly. Expenses are added before tax so you are not paying for them out of your take-home. Tax is applied as a gross-up, not a simple percentage off the top, because you need enough revenue that what remains after tax is your target. Non-billable time is removed from the hours, and the buffer covers the quiet months.
Estimating your billable percentage honestly
Very few independent workers bill more than 70% of their working hours, and many bill closer to 50% to 60% in their first year. The rest goes on proposals, calls that do not turn into work, admin, learning, invoicing and chasing payments. If you track your time for a month you will have a real number. If you do not, 60% to 70% is a safer assumption than 90%, and you can raise your rate later once you know.
The hours per week figure should be the hours you really want to work, not the maximum you could survive. Setting it at 50 to make the rate look lower only means you will burn out or earn less than planned.
From hourly to day, week and month rates
Clients often prefer a day or project price, and the equivalents shown under the hourly rate are a quick starting point: a day is eight billable hours, a week is your hours-per-week figure, and a month is the weekly rate scaled to an average month. Treat these as floors. A fixed-price quote should also include a contingency for scope changes, because unlike hourly billing, the risk of a job taking longer sits with you.
The "invoice per month" figure is different: it is the revenue you need to bring in each month to hit the annual target, regardless of how the hours fall. If you are regularly below it, the gap has to come from either more billable hours or a higher rate.
Checking the rate against the market
The calculator tells you what you need; it cannot tell you what clients will pay. Compare the result with rates for similar work in your field and region. If the market rate is higher, charge the market rate: the extra becomes a larger buffer. If the market rate is lower, something has to change. Either reduce expenses, increase billable hours, specialise in work that commands more, or accept a lower income target for now. Dropping the rate without changing any input means the shortfall is real, just hidden.
When you invoice, the invoice generator can turn the rate into a clean PDF, and the profit margin calculator is useful when you move from hourly work to productised services with a fixed cost.
Common mistakes
- Using the income-tax bracket as the tax rate. Self-employed people often pay income tax plus social security or self-employment contributions. Use the total share of revenue that goes to tax.
- Forgetting irregular expenses. A laptop every three years, annual insurance and professional memberships belong in the yearly expense figure, spread out.
- Counting 52 working weeks. Holidays, public holidays and sick days exist. 46 to 48 weeks is realistic for most people.
- Setting the buffer to zero. Late payments and quiet months happen to everyone. The buffer is what keeps a slow quarter from becoming a crisis.