How to work out a charge-out rate
- Add up what a person costs in a year: salary, employer on-costs and their share of overheads.
- Divide by the hours they can bill in a year. That is the break-even rate.
- Divide by (1 − your margin) to get the price. Multiply by the hours in a day for a day rate.
Worked example (Australia). Salary $100,000, plus 12% super guarantee ($12,000), plus 5% other on-costs ($5,000), plus a $30,000 share of overheads = $147,000 a year. Over 1,200 billable hours that is $122.50 an hour to break even. For a 30% margin: $122.50 ÷ (1 − 0.30) = $175.00 an hour, which is a 42.9% markup, or $1,330.00 for a 7.6-hour day.
Margin and markup are not the same
Margin is profit as a share of the price; markup is profit as a share of the cost. Mixing them up underprices work: a 30% markup on $122.50 is $159.25, which is only a 23.1% margin.
| Margin | Same as a markup of |
|---|---|
| 10% | 11.1% |
| 20% | 25% |
| 25% | 33.3% |
| 30% | 42.9% |
| 40% | 66.7% |
| 50% | 100% |
| 60% | 150% |
Markup = margin ÷ (1 − margin). Margin = markup ÷ (1 + markup).
Employer on-costs by country
- Australia: super guarantee is 12% from 1 July 2025 (ATO). From 1 July 2026, under Payday Super, it is worked out on each employee's qualifying earnings and paid each payday, up to a maximum contribution base of $270,830 for 2026–27. Payroll tax is a state or territory tax with its own thresholds and rates (business.gov.au); add it, and costs such as workers' compensation insurance, under other on-costs.
- United Kingdom: for 2026 to 2027, employers pay Class 1 National Insurance at 15% on earnings above the secondary threshold of £5,000 a year (£96 a week, £417 a month) (GOV.UK). For employees under 21 and apprentices under 25, employers pay no NI on earnings up to £50,270 a year (the upper secondary thresholds); this calculator does not apply that. Eligible employers can reduce their NI bill by up to £10,500 a year with Employment Allowance; if you claim it, take it off your shared overheads. The minimum employer pension contribution under automatic enrolment is 3% of qualifying earnings.
- United States: employers pay 6.2% Social Security on wages up to $184,500 (2026) and 1.45% Medicare on all wages; there is no employer match for the 0.9% Additional Medicare Tax (IRS Topic 751). Federal unemployment tax (FUTA) is 6.0% of the first $7,000 of each employee's wages, less a credit of up to 5.4% for state unemployment tax paid (IRS Topic 759); add it and state taxes under other on-costs.
The calculator works out UK National Insurance on the yearly salary. Payroll works it out each pay period, which gives about the same answer when pay is the same every period (the weekly and monthly thresholds are rounded, so it can differ by up to about £1.20 a year).
Questions
What is the difference between margin and markup?
Margin is profit as a share of the price. Markup is profit as a share of the cost. A cost of $122.50 an hour sold at $175.00 makes $52.50: that is a 30% margin (52.50 ÷ 175) and a 42.9% markup (52.50 ÷ 122.50). Setting a 30% markup instead would give $159.25 an hour, a margin of only 23.1%.
How many billable hours should I use?
Use the hours each person can really bill in a year, after leave, public holidays and non-billable work. The utilisation calculator works this out from contracted hours, 2027 public holidays and a target, and can send the hours straight here.
What are on-costs?
Costs of employing someone on top of their salary. Some are set by law (super guarantee in Australia, employer National Insurance in the UK, Social Security and Medicare in the US); others depend on your business, such as payroll tax, workers' compensation, pension above the minimum, insurance and benefits.
How are overheads shared?
Equally per person: rent, software, and the salaries of people who never bill are added up and split across the headcount. A role with no billable hours still adds its cost to the team, so it raises the blended rate.
Can I use it for contractors?
Yes. Tick "Contractor" and enter what you pay them a year as the salary. No employer on-costs are added. In Australia, super guarantee is still due for a contractor paid mainly for their labour (ATO); leave Contractor unticked for them.
Is this rate what I should charge?
It is the rate that covers your costs and leaves the margin you chose at the hours you entered. Your prices are your own decision; set them yourself rather than agreeing them with competitors.
Does anything I type leave my browser?
No. The sums run in your browser and your figures are saved only in this browser. A share link keeps everything after the # in the address, and browsers never send that part to a server. "Clear my data" removes what is saved here.
Not sure how many hours people can bill? Work it out with the utilisation calculator.
Sources
Last checked 4 October 2026. We link only to the tax office or government.
- ATO: super guarantee percentage and maximum contribution base (page updated 17 April 2026)
- ATO: about Payday Super
- business.gov.au: payroll tax
- GOV.UK: rates and thresholds for employers 2026 to 2027 (page updated 1 September 2026)
- GOV.UK: Employment Allowance
- GOV.UK: workplace pensions, what you, your employer and the government pay
- IRS: Topic no. 751, Social Security and Medicare withholding rates (page updated 24 September 2026)
- IRS: Topic no. 759, Form 940, federal unemployment (FUTA) tax (page updated 24 September 2026)
Changes: 4 October 2026: first published. Next review: 1 January (US), 6 April (UK) and 1 July (Australia).