Day rate calculator

Most tradespeople set their day rate by charging a bit more than they think the last person did, and hoping it is enough. It usually isn't. This calculator works it out from the numbers instead: the wage you want, your real running costs, and the days you can genuinely bill. Here is how the sum works and how to fill it in honestly.

How the day rate calculation works

A day rate has to cover three things: the wage you want to take home, a share of the cost of running your business, and the fact that you cannot bill every working day. Put those together and the formula is simple.

Day rate = (take-home pay + business costs) ÷ billable days.

The mistake almost everyone makes is treating a day rate as just their wage. It isn't. Miss the costs or overestimate the days, and you are quietly working for less than the number suggests.

Step 1: the wage you actually want

Start with a real target, not a vague one. Decide what you want to take home in a year, before a single business cost is paid. If that is £45,000, write it down as the starting point. Everything else gets added on top of it, so this is your wage, not your turnover.

Step 2: your real business costs

Now add up what it costs to run the business for a year. Be thorough and honest:

• Van, fuel, servicing and insurance
• Tools, replacements and hire
• Public liability and any other cover
• Phone, software and subscriptions
• Accountant and bank fees
• Materials you don't bill directly, consumables and waste

For a lot of sole traders this lands somewhere around £10,000 to £15,000 a year before they have earned anything. If yours is £12,000, your business needs to bring in £45,000 plus £12,000, which is £57,000, before tax.

Step 3: the days you can actually bill

This is the number that catches everyone out. There are about 260 weekdays in a year, but you will not bill for anywhere near all of them. Take off holiday, the odd sick day, bank holidays, and above all the days you spend quoting, chasing, buying materials and doing paperwork instead of earning.

A realistic figure for a busy sole trader is often around 200 days, sometimes fewer. Use a number you can actually hit, not a fantasy where you are on the tools every weekday.

A worked example

Put the example numbers through the formula and it comes out like this.

So £285 a day is your floor: the rate that covers your costs and pays the wage you set, if you fill 200 days. Charge £220 because it sounds friendlier and you have handed yourself a pay cut you never agreed to.

Turning it into an hourly rate

Quote by the day for anything that fills a day or more; it is simpler for the customer and it stops you nickel-and-diming your own time. Keep an hourly rate for the small stuff: a call-out, a quick repair, an hour to trace a fault.

A fair hourly rate is usually your day rate divided by around six or seven, not eight, because a one-hour job still costs you the travel, the parking and the setup. Divide by eight and you are quietly giving away the overhead on every short job. That is why the calculator shows an hourly range rather than a flat day-rate-over-eight.

Adjust for the job, not for nerves

Your day rate is a baseline, not a straitjacket. Charge more for awkward access, unsociable hours, specialist work, or a job nobody else wants to touch. Hold firm on the jobs everyone can do. What you should not do is drop below your floor because you are nervous about the price. A job priced under your real day rate isn't work, it's a hobby that happens to tire you out.

Your day rate is not your profit

One thing worth being clear on: this rate covers your wage and your costs, not your profit. Profit is a margin you add on purpose when you price a whole job, on top of materials and labour, so the business grows instead of just surviving. The day rate keeps you afloat; the margin is what gets you ahead. See how to price a job so you actually make a profit for how the two fit together, and why markup and margin aren't the same thing.

Review it once a year

Your day rate isn't set in stone. Materials, fuel, insurance and your own costs all creep up, so put a note in the calendar to run this again every year, ideally before your busy season. Nudging your rate up by a sensible amount rarely loses good customers, and it stops the slow squeeze where your costs rise but your rate doesn't. For the full picture, read how to set your day rate and stop undercharging.

Once you know your number, build it into your saved items so every quote is priced off your real rate without doing the sum again. That is exactly what Snapquo keeps for you: your priced day rate and items in one list, ready to tap into any quote.

This tool and guide are for general guidance, not financial or tax advice. Your own costs, tax position and market will differ. Treat the result as a well-reasoned starting point and adjust it to your business.