VAT Registration for Tradespeople UK — When You Must Register, Voluntary Registration, and the Flat Rate Scheme (2026)

The VAT registration threshold: £90,000

As of 2026, the compulsory VAT registration threshold is £90,000 of taxable turnover in any rolling 12-month period. This threshold has been frozen since the 2024/25 tax year and remains in place through 2026. It covers the total value of VAT-taxable sales — your labour, materials you supply, and any other taxable services — before VAT is added.

Standard-rated work (20% VAT) and reduced-rated work (5%, such as certain energy-efficiency installations) both count toward the threshold. Zero-rated work technically counts too, but most trade work does not fall into that category.

When you breach the threshold, you are legally required to register. There is no grace period, no warning letter from HMRC, and no option to delay. Failing to register on time carries financial penalties — and if HMRC can demonstrate you should have known you were going to exceed the threshold, they can backdate your registration to the point you first breached it, meaning you owe VAT on invoices you have already been paid in full, without VAT having been collected.

How the rolling 12-month test works

This is the detail that catches out most tradespeople: the threshold is not measured against a tax year, a calendar year, or your accounting year. It is measured against any rolling 12-month period. You must look back at your last 12 months of taxable turnover at the end of every single calendar month.

In practice: if you earned £45,000 in the first half of the year and then had a very strong run of work from July through to December, you could breach £90,000 in October or November even if your annual accounts (which might run April to April) show a figure comfortably below the limit.

Once you breach the threshold at the end of any given month, you have 30 days to notify HMRC. Your VAT registration then takes effect from the first day of the second month after the month you exceeded the threshold. For example: if your rolling 12-month turnover passes £90,000 at the end of September, you must notify HMRC by 30 October. Your registration takes effect from 1 November, and you must charge VAT on all work from that date.

The practical implication: if you are approaching £75,000–£80,000 in rolling turnover, you need to be checking your figures every month. Good accounting software with a live revenue view makes this effortless. A spreadsheet you update each month also works. Doing nothing and hoping for the best does not.

Voluntary registration: when it makes sense and when it doesn't

You can register for VAT at any point, even if your turnover is well below £90,000. This is called voluntary registration, and it is not always a bad idea — but the decision hinges almost entirely on who your customers are.

When voluntary registration makes sense

• Your customers are VAT-registered businesses. If you work mainly for developers, property management companies, commercial clients, or other contractors, they can reclaim the VAT you charge. Adding 20% to your invoice costs them nothing in real terms. Meanwhile, you can reclaim VAT on all your own business purchases — materials, tools, van costs, software subscriptions.
• You spend significantly on materials. If you buy £2,000 of materials per month, that is £400 of VAT you can reclaim each month — £4,800 a year that flows back to you under standard VAT accounting.
• You want to appear more established. Some commercial clients and main contractors expect suppliers to be VAT-registered. A VAT number on your invoices signals a certain scale of operation and can open doors to larger contracts.
• You are growing fast and will hit the threshold soon. Registering now avoids the scramble of registering at the last minute and lets you build VAT-compliant processes into your business from the outset.

When voluntary registration is a bad idea

• Most of your customers are domestic homeowners. Homeowners cannot reclaim VAT. Adding 20% to your quotes makes you more expensive than an unregistered competitor doing the same work. You can absorb the VAT yourself, but that cuts your margin significantly.
• Your material costs are low. If you are primarily selling labour and buying minimal materials, the input VAT you can reclaim may not offset the administrative burden and the pricing disadvantage on domestic work.
• Your turnover is stable and well below £90,000. If you are turning over £50,000 on domestic work with no plans to scale, there is no compelling reason to register early.

The Flat Rate Scheme: simpler VAT accounting for smaller trades

Standard VAT accounting requires you to calculate the VAT on every invoice you raise and every purchase you make, subtract one from the other, and pay or reclaim the difference each quarter. For a busy tradesperson with dozens of transactions a month, this is time-consuming and error-prone.

The Flat Rate Scheme (FRS) is HMRC's simplified alternative. Instead of tracking individual transactions, you pay a fixed percentage of your gross (VAT-inclusive) turnover to HMRC each quarter. You still charge your customers 20% VAT, but you pay HMRC a lower flat rate — the difference stays in your business.

Eligibility

You can join the FRS if your taxable turnover (excluding VAT) is £150,000 or less at the time of application. You must leave the scheme when your total VAT-inclusive income (all business income) exceeds £230,000 in the next 12 months.

Flat rate percentages by trade (2026)

The rate you pay depends on your trade category as defined by HMRC:

The limited cost trader trap

This is the part of the flat rate scheme that catches most tradespeople off guard. If your VAT-inclusive costs on goods (materials and stock) are less than 2% of your VAT-inclusive turnover, or less than £1,000 per year, you are classed as a 'limited cost trader' and must use the 16.5% rate regardless of your trade sector.

Note that costs on goods means physical goods only — fuel, equipment hire, and services such as subcontractor labour do not count toward the 2% test. If you primarily sell your own labour and clients supply their own materials (common on day-rate work), or your material costs are very low relative to turnover, you will almost certainly be a limited cost trader. At 16.5% of gross turnover, the FRS often costs more than standard accounting for labour-only contractors.

Always check which rate applies to your business before committing to the FRS. If you are on the boundary, run the numbers with an accountant — it is worth the hour of their time.

FRS pros and cons at a glance

The Cash Accounting Scheme: account for VAT when you're paid

Under standard VAT accounting, VAT becomes due on the date you issue an invoice — not the date you are paid. If a customer is slow to pay, you still owe HMRC the VAT by the end of your return period, even if the money has not arrived in your account yet.

The Cash Accounting Scheme lets you account for VAT based on the date you actually receive payment, not the invoice date. You also only reclaim input VAT on purchases when you actually pay your suppliers, not when you receive their invoice.

For tradespeople with slow-paying commercial clients or those who extend credit to customers, this is a significant cash flow benefit. You are not funding HMRC out of your own pocket while waiting 60 or 90 days for payment.

You can join the Cash Accounting Scheme if your estimated VAT-taxable turnover for the next 12 months is £1.35 million or less. You leave if it exceeds £1.6 million. Note that you cannot use Cash Accounting and the Flat Rate Scheme at the same time — the FRS has its own built-in cash accounting provision.

Making Tax Digital for VAT: MTD is not optional

Since April 2022, all VAT-registered businesses must use Making Tax Digital (MTD)-compatible software to keep VAT records and submit VAT returns. You cannot file through the HMRC portal directly, and you cannot submit on paper. Everything must go through MTD-approved software.

In practice, this means one of three routes:

• Full accounting software (Xero, QuickBooks, FreeAgent, Sage) that connects directly to HMRC and submits your returns automatically.
• Bridging software that takes data from a spreadsheet and submits it in the required MTD format. It works, but it adds a step and is not recommended long-term.
• Your accountant submits on your behalf using their MTD-compatible practice software — but you still need to provide digital records.

Keeping records in a notebook or non-MTD spreadsheet and then typing figures into the HMRC website is no longer permitted. If you become VAT-registered, get MTD-compatible software in place from your first day of registration — it is a legal requirement, not a nice-to-have.

How to register for VAT with HMRC

Registration is done online through your HMRC Government Gateway account. If you do not have one, you will need to set one up first using your UTR (Unique Taxpayer Reference) and National Insurance number. The registration process itself takes around 20 minutes. Processing typically takes 10 working days, after which HMRC will send your VAT registration certificate by post containing your VAT number.

You will need the following information to hand:

• Your business name, principal place of business address, and contact details
• Your business structure (sole trader, partnership, limited company) and company number if applicable
• Your UTR (Unique Taxpayer Reference) or company registration number
• The nature of your business and the trade sectors you work in
• Your estimated VAT-taxable turnover for the next 12 months
• The date you want your registration to take effect — the date you first breached the threshold (for compulsory registration) or today (for voluntary registration)
• Your bank account details for any VAT repayments HMRC may owe you

If you want to join the Flat Rate Scheme, you can apply during the registration process. If you decide later that the FRS is right for you, you can apply separately through your HMRC online account.

The alternative to self-registration is to have your accountant register you — worthwhile if your situation is complicated (for example, you run multiple trades, have existing CIS deductions in play, or are registering a limited company for the first time).

Practical tips for newly registered tradespeople

Update your invoice templates immediately

From your registration date, every invoice you issue must be a valid VAT invoice. That means it must include your VAT registration number, a sequential invoice number, the net amount for each line item, the VAT rate applied, the VAT amount, and the gross total. If you use Trade2Base or similar invoicing software, update your VAT number in settings as soon as you receive your certificate — the software handles the rest automatically.

Tell your regular customers before it happens

If you have ongoing relationships with domestic clients, give them advance notice that VAT will be added to future invoices. This avoids disputes and allows them to factor the additional cost into their budgets. For commercial clients who can reclaim VAT, the conversation is straightforward — their net cost is unchanged.

Open a separate account for VAT

The most common cash flow shock for newly registered tradespeople is realising that the VAT collected over a quarter must be handed to HMRC in full, often when the business account is running low after a slow month. Treat VAT as money that is never yours: as each invoice is paid, move the VAT portion into a separate account immediately. When your quarterly return is due, the money is already sitting there.

Set up a direct debit for VAT payments

HMRC offers a direct debit option for VAT payments. This is worth setting up from your first return period — it eliminates the risk of a missed payment deadline, which carries an automatic late payment penalty.

Know your first return period

HMRC will assign you a VAT return period — typically quarterly. Your first return may cover a shorter period than three months depending on your registration date. Your return and payment are both due one month and seven days after the end of the period. Mark these dates in your calendar from day one.

Check the VAT reverse charge rules for construction work

If you do subcontract work for main contractors or other registered businesses within the construction sector, the domestic reverse charge may apply. Under the reverse charge, you do not charge VAT on your invoice — instead the customer accounts for it. The rules are specific to CIS-registered work and can be confusing. Read our dedicated guide on VAT reverse charge for construction before you start submitting invoices to other VAT-registered contractors.