The £85,000 Question
You're running a steady conservatory or extension business. Last year you turned over £62,000. This year, with three decent jobs lined up, you reckon you'll hit £73,000 if you're lucky. You're under the VAT registration threshold, so you don't have to register. But should you?
This question comes up regularly in conversations with builders, installers and home improvement contractors. The answer isn't a simple yes or no. It depends entirely on your circumstances, your client base, and how much admin you're willing to take on.
When Registration Works in Your Favour
Let's say you're installing a new conservatory roof system. You've bought the materials for £4,000 before VAT. If you're registered, you pay VAT on that purchase and then reclaim it. If you're not registered, you just pay the full price and can't claim anything back.
Here's where it gets interesting. If most of your clients are businesses rather than homeowners, they expect to pay VAT anyway. They can reclaim it themselves. So when you add 20% to your quote, they're not bothered. Meanwhile, you're claiming back the VAT on all your materials, labour costs, tools, vehicle running, and that specialist brickwork course you did last summer.
Many extension contractors report that voluntary registration actually improves their cashflow and profit margin when working primarily on commercial or development projects. The VAT you collect from clients sits there, but the VAT you reclaim on your costs comes back faster.
The Real Problem: Domestic Clients
This is where it falls apart for most of you. If you're installing conservatories and extensions for homeowners, they don't want to pay VAT. They just want the finished job at the best price.
You quote £5,000 for a conservatory installation. If you register for VAT, you suddenly need to charge £6,000. That price jump loses you jobs. Simple as that. Your unregistered competitor down the road quotes £5,000 and wins the work.
You might think you can absorb the VAT cost yourself. Don't. That destroys your margin and defeats the purpose of registering.
The Admin Burden
Voluntary registration means quarterly VAT returns. That's four times a year you're gathering invoices, tracking expenses, calculating outputs and inputs, and filing paperwork with HMRC. If you're a sole trader juggling site work, quotes, suppliers and customer complaints, this is a real cost.
You'll also need better record keeping. Not the shoebox of receipts approach. Proper filing. If HMRC audits you, and they occasionally do, disorganised records lead to penalties and stress.
Some contractors use accountants to handle VAT returns. That costs £150 to £300 per year depending on complexity. Add that to the burden and ask yourself whether it's worth it for a £73,000 turnover business.
What About Growth?
Here's a strategic angle. If you're genuinely heading towards £85,000 and beyond, registering early might make sense. You can plan for it psychologically and operationally. When you hit the threshold, you're already in the system.
But if you're genuinely hovering around £50,000 to £70,000 and expect to stay there, voluntary registration is probably unnecessary.
The threshold itself is £85,000 in the last 12 months. Going slightly over doesn't mean instant doom. You have time to register once you've breached it. And if you dip below £83,000 for 12 months, you can deregister.
Specific Scenarios
Scenario One: You're a sole trader, mostly domestic conservatory work. Don't register. Your clients won't pay VAT, and the admin headache isn't justified. Stay focused on the work itself.
Scenario Two: You're doing extensions for property developers and building contractors. Register. They're expecting VAT. You'll reclaim materials and labour costs. Your margin improves. The admin is worth it because the volume justifies it.
Scenario Three: You're mixed. Some domestic, some commercial. This is the tough one. Some contractors in this position do register and charge VAT only to business clients, whilst quoting unregistered prices to homeowners. That's perfectly legal, but it does mean running two pricing structures and explaining to clients why their friend got quoted differently. It works, but it adds complexity.
The Cash Flow Angle
One detail many contractors overlook. When you register, you collect VAT from clients but you pay it to HMRC quarterly. If you're doing big jobs, the timing matters. Install a £15,000 conservatory in month one. You invoice the client. They take 30 days to pay. You file your VAT return in month three and owe HMRC £3,000. But the client hasn't paid yet. That's a short-term cash flow squeeze, especially if you've already paid suppliers.
For larger operations, this is manageable. For a smaller business running on tight margins, it's worth factoring in.
What Should You Actually Do?
Run the numbers. If more than 60% of your work is with businesses or developers, voluntary registration probably helps you. If more than 80% is domestic, it probably hinders you.
Talk to your accountant. They can look at your actual figures and your expected growth trajectory. A 20-minute conversation costs less than making a wrong decision.
Check HMRC's guidance on VAT registration. It's dry, but it's accurate. The gov.uk website has a VAT threshold checker that walks you through it.
Remember you're not locked in. If you register and hate it after a year, you can apply to deregister. It's not a permanent decision.
For most conservatory installers and extension builders operating in the £50,000 to £80,000 range, with primarily domestic clients, staying unregistered keeps life simpler. You can undercut the larger registered firms. You don't have the admin burden. You focus on winning jobs and doing good work.
For those moving into commercial work or working with businesses, registration makes financial sense despite the hassle. The VAT recovery is real money.
There's no shame in either approach. Choose what works for your business as it actually is, not as you hope it might become.
