How to Calculate Your Consulting Day Rate (With a Worked Example)

Most advice on consulting day rates gives you a range ("between X and Y in your field") and stops there. A range tells you what others charge, not what you need to charge to cover your costs, pay yourself and keep the business running. This guide gives you a method: start from the income you need, then work out how many days you can actually bill.

You will find the formula, a fully worked example with every assumption stated, a fill-in table you can copy, and the mistakes that most often lead to underpricing.

The formula in one line

Your minimum day rate is your annual revenue target divided by your realistic number of billable days.

Day rate = (take-home pay + taxes and social contributions + business overheads + safety margin) ÷ billable days

Each part of that line hides a decision. The steps below take them one at a time.

Step 1: Decide what you want to take home

Start with the amount you want to keep after business costs and after taxes and social contributions. If you are leaving a salaried job, don't just copy your old salary. An employer also paid for your paid leave, part of your social insurance, your equipment and often a pension or health plan.

Write down a yearly figure. Include what you want to put aside for retirement and health cover if nobody else pays for them in your country.

Step 2: Add taxes and social contributions

This is where rules differ most from one country to another, so check the official source where you are registered. Two examples:

• United States: on top of income tax, self-employed people pay self-employment tax of 15.3%, made up of 12.4% for Social Security and 2.9% for Medicare. For 2026, the Social Security part applies to the first $184,500 of combined wages and net earnings (IRS (US), Self-employment tax, page updated 30 October 2026).
• Other countries: the UK, France and India each have their own income tax and social contribution systems, and the rates depend on your legal structure (sole trader, company, other regimes). Ask an accountant or use the tax authority's simulator for your status.

For a first estimate, many consultants set aside a fixed percentage of profit. Treat that percentage as an assumption to check, not as a rule.

Sales taxes such as VAT or GST are a separate matter. Where you are registered for them, you add them on top of your rate and pass them to the tax authority. For example, the UK standard VAT rate is 20% (GOV.UK, VAT rates, page consulted 4 November 2026). They are not part of your income, so leave them out of this calculation.

Step 3: List your business overheads

Overheads are everything you pay to run the business, whether or not you have a client this month. A typical list:

• Software and subscriptions (accounting, CRM, design or analysis tools)
• Professional insurance
• Accountant and bank fees
• Computer and equipment, spread over their useful life
• Training, certifications and conferences
• Marketing: website, directory listings, events, travel to meet prospects
• Office or coworking space, phone, internet

Go through your bank statements for the last 12 months if you are already independent. If you are starting, ask a peer in your field what they spend.

Step 4: Add a safety margin

Clients pay late, projects get cancelled, and some years are slower than others. A margin on top of your costs lets the business build a cash reserve and invest. The size of the margin is your call; the worked example below uses 10%.

Step 5: Count your real billable days

This is the step that changes the result the most. Start from the calendar, then remove every day you cannot invoice.

1. Weekdays in the year: 260 or 261, depending on the year.
2. Public holidays: the number depends on your country and region, and on your clients' calendars.
3. Vacation: as a benchmark, most UK workers on a 5-day week are entitled to at least 28 days of paid leave a year, which can include bank holidays (GOV.UK, Holiday entitlement, page consulted 4 November 2026). In France, employees earn 30 working days (5 weeks) for a full year (Service Public (FR), Congés payés du salarié, page verified 30 April 2026). As a consultant, nobody pays you for these days, so they must be covered by your rate.
4. Sick days and personal days: keep a buffer.
5. Non-billable work: prospecting, writing proposals, meetings with prospects, invoicing, bookkeeping, training, and gaps between two missions.

What remains is your number of billable days. It is usually well below the number of days you are available to work.

Worked example

This is an illustration, not a benchmark. The amounts are in dollars only for readability; the method is the same in any currency. Every figure below is an assumption you should replace with your own.

Revenue target

Billable days

Result

129,800 ÷ 154 = 843 per day, which this consultant would round to 850. On an 8-hour day, that is about 106 per hour.

Now compare with a common shortcut: dividing the same revenue target by 220 days. That gives 590 per day. At 590 per day over the 154 days the consultant can really bill, revenue would be 90,860, which is 38,940 short of the target. The shortfall comes entirely out of take-home pay.

Fill-in table

Copy this table into a spreadsheet and replace each line with your own figures. You can also run the numbers in the day rate calculator.

From minimum rate to the rate you quote

The result is a floor, not your price. Before you quote, check three things:

• The market: look at what clients in your field and region pay. If the market pays well above your floor, you have room. If it pays below, the fix is rarely a lower rate; it is a narrower niche, a different client type or lower costs.
• The value of the mission: a short, high-stakes assignment can justify a higher rate than a long, routine one.
• The format: a fixed-price proposal still needs your day rate underneath. Estimate the days, multiply, then add a buffer for scope risk.

Fewer days spent on prospecting means more billable days and a lower floor. Listing your services on a B2B network where clients contact you directly, with no commission, is one way to reduce sales time.

Checklist before you send your next quote

• You know your take-home target and have written it down.
• Your tax and social contribution rate comes from an official source or your accountant, for your country and status.
• VAT, GST or sales tax is added on top of the rate where it applies, not included in it.
• Your overheads come from real bank statements or real quotes.
• Your billable days count sales, admin, training and gaps between missions.
• You have rechecked your rate in the last 12 months.

Common mistakes

• Pricing on 220 billable days. 220 is roughly the number of days you are available to work, not the number you can invoice. In the example, it leads to a rate about 30% too low.
• Forgetting sales time. Prospecting, meetings and proposals take days every month, especially in your first years. If they are not in your calculation, you work them for free.
• Copying competitors. Another consultant's rate reflects their costs, their country, their experience and their client mix. Use market rates as a check, never as the starting point.
• Starting from your old salary. A salary does not include the costs an employer covered for you: paid leave, part of social insurance, equipment, training.
• Including VAT or sales tax in your income. That money belongs to the tax authority.
• Never updating the rate. Overheads and taxes change. Recalculate at least once a year and when your situation changes.