Billable utilisation, weekly and annual revenue, and your effective rate per hour worked.
Planning estimate only. Utilisation targets vary by profession; this ignores taxes, overheads, write-offs and collection rates.
utilisation rate (billable ÷ worked)
How to use this tool
Type all hours you work in a week, including admin, business development and training.
Type only the hours you charge clients for.
Type your hourly rate and how many weeks a year you actually work, after holidays.
Billable revenue ÷ hours worked is what each hour of your working life really earns — the number to compare with a salary.
Formula & worked example
Worked example: 40 hours worked, 30 billable, $100 an hour, 48 working weeks. Utilisation = 30 ÷ 40 = 75%; weekly revenue = $3,000; annual revenue = $144,000; non-billable = 10 hours a week; effective rate = $75 per hour actually worked.
Limitations — read this before you rely on it
Planning estimate only. It ignores write-offs (hours worked but not billed), uncollected invoices, taxes, overheads, and the fact that utilisation targets differ sharply by profession (law, consulting, agencies, freelancing). Revenue here is billed revenue, not profit or take-home pay.
Frequently asked questions
The share of hours worked that are billable to clients. 75% is a common target in professional services; 100% is unrealistic once admin and business development are counted.
Hours charged to a client under a fee arrangement. Internal meetings, training, pitching and admin are non-billable even though they are real work.
Because non-billable hours earn nothing. At 75% utilisation and $100 an hour, each hour worked is worth $75 on average.
Raise utilisation, raise the rate, or both — but utilisation has a ceiling, while rate rises compound without extra hours.
No. Taxes, business costs, unpaid invoices and write-offs all come out of billed revenue before it becomes income.