£90,000 is the number that decides how big your salon gets. Cross it and HMRC wants 20% of everything you take, which is why so many good salons spend years parked just underneath it, turning away work on purpose.

How the threshold works

Most taxes scale gently, so earning a bit more means paying a bit more on the extra, but VAT arrives all at once. The moment your turnover crosses £90,000 in any rolling twelve-month period, you have to register, and from that point VAT is due on every pound you take, not only the pounds above the threshold.

A salon turning over £89,000 pays no VAT, while a salon turning over £95,000 owes VAT on the full £95,000. That £6,000 of extra work triggers a tax bill of roughly £13,000, leaving you worse off than the salon that stayed at £89,000.

Why VAT hits salons harder than most businesses

VAT-registered businesses get to reclaim the VAT on what they buy, which softens the blow considerably if your big costs carry VAT. A builder reclaims it on materials, and a shop reclaims it on stock.

Your biggest cost is wages, and there's no VAT on wages to reclaim. Colour, retail stock, and some bills will give you a reclaim worth a couple of thousand a year, but it's a rounding error next to the bill.

The other escape route is passing the cost on. A business selling to other VAT-registered businesses adds 20% to the invoice and the customer reclaims it, so nobody feels the cost. Your clients are consumers with nothing to reclaim, so if you put prices up 20% overnight to cover the VAT, they feel every penny of it, and some of them walk.

You have little to reclaim and no quiet way to pass the cost on, which is why the threshold distorts hairdressing more than almost any other trade.

The dead zone

Run the numbers on a salon that crosses the line.

  • At £89,000, unregistered. You keep the lot, before your normal running costs.
  • At £95,000, registered. Your prices now include VAT, so £15,833 of that £95,000 belongs to HMRC. Reclaim maybe £2,500 on products and bills and your net VAT bill is around £13,300. You keep £81,700.

The salon doing £6,000 more work ends up £7,300 worse off. To get back to where the £89,000 salon sits, you need turnover of roughly £105,000. Everything between £90,000 and £105,000 is a dead zone where you work harder for less money, and the worst possible place to run a salon is at £92,000, just inside the dead zone.

The rolling twelve-month test

The threshold isn't measured against the tax year or your accounting year, and this detail catches salon owners out constantly. At the end of every calendar month, you look back over the previous twelve months, and if that total has crossed £90,000, you have 30 days to register. Miss it and you owe the VAT from the date you should have registered anyway, plus a penalty, on income you never collected VAT for.

A strong December can tip you over without your accountant noticing until the year-end, months too late. You need to know your rolling twelve-month figure every month, which takes thirty seconds if your software shows turnover by month and an evening with a shoebox of receipts if you're adding it up by hand.

One more thing while you're checking: the threshold has been frozen at £90,000 since 2024 while your prices have risen, so a salon comfortably £8,000 clear two years ago can drift across the line without taking a single extra client.

The workarounds

Every salon owner near the threshold has considered at least one of these three.

  • Closing a day or turning work away. This is legal, common, and quietly mad when you say it out loud: refusing paying clients so you don't get taxed. But for a solo stylist or a two-chair salon with no ambition to grow, capping turnover under £90,000 is a perfectly rational choice, as long as you make it deliberately rather than by drift.
  • Splitting the business in two. Hair under one company, beauty under another, each safely under the threshold. HMRC has a name for this, disaggregation, and a power to direct that the two businesses be treated as one business. If the two share premises, a reception, a till, a brand and a website, HMRC will treat them as one business and you'll get the combined VAT bill plus penalties. Genuine separation can survive scrutiny, but genuine means separate finances, separate branding, separate customers, and an arrangement you'd be comfortable explaining across a table from an inspector.
  • Switching staff to chair rental. A genuinely self-employed stylist renting your chair runs her own business, and her takings never touch your turnover. Only the rent she pays you counts towards the threshold. This is the one restructure that legitimately works, as long as she genuinely is self-employed: if you set her prices, take her bookings, and supply her stock, she's your employee whatever the paperwork says, and the takings are yours after all. The trade-offs go well beyond VAT, and the full breakdown is in chair rental or employed staff: which pays better.

How to cross the threshold

For a salon with three or four staff and a full book, staying under £90,000 means staying small for good, and the better plan is usually a fast crossing rather than a slow creep.

  • Don't hover. The dead zone runs to about £105,000, so a plan that gets you from £88,000 to £120,000 in eighteen months hurts briefly, while a plan that gets you to £95,000 and stalls hurts indefinitely.
  • Pair registration with a price rise. You don't need the full 20% from clients in one go. A 10% rise covers half the bill, growth covers the rest, and clients who'd revolt at 20% will wear 10%. Time the rise for the registration date so you only have one awkward month, not two.
  • Look at the Flat Rate Scheme. Hairdressing has a flat rate of 13%: you charge clients 20% but pay HMRC 13% of your gross takings and skip the input VAT paperwork entirely. There's a 1% discount in your first registered year. For a typical salon the flat rate works out close to standard VAT accounting, with a fraction of the admin. Ask your accountant which side of the line you fall.
  • Register voluntarily if crossing is inevitable. If you know you'll cross in March, registering in January on your own terms beats a panicked registration with a penalty attached.

Work out your rolling twelve-month figure

Add up your full takings for the last twelve calendar months, including retail. The threshold is measured on turnover, the money through the till before a single cost comes out, and that figure is bigger than your profit. If the answer starts with an 8, work out how fast it's growing and decide now whether you're staying under or going through, because the decision gets more expensive the closer you drift. If the answer starts with a 9 and you're not registered, ring your accountant this week.