VAT Registration for UK Tradespeople: When, Why, and How

Do you need to register for VAT?

If your taxable turnover exceeds £90,000 in any rolling 12-month period, you must register for VAT with HMRC. But even below this threshold, voluntary registration can sometimes benefit your business.

Quick answer: You must register for VAT if your taxable turnover exceeds £90,000 in any 12-month rolling period. Registration is done through your HMRC Government Gateway account. You then charge 20% VAT on most goods and services.

This guide explains the rules, the options, and how to handle VAT on your invoices once you are registered.

The VAT registration threshold

The current compulsory VAT registration threshold is £90,000 (as of 2024/25). You must register if:

• Your taxable turnover in the last 12 months exceeded £90,000, or

• You expect your turnover to exceed £90,000 in the next 30 days alone

This is a rolling 12-month test, not based on the tax year. HMRC checks the total at the end of each month. If you hit the threshold in September, you must register within 30 days and start charging VAT from the first day of the second month following the month you exceeded the threshold.

Use our VAT calculator to quickly add or remove VAT from any amount.

How to register for VAT

You register for VAT online through your HMRC Government Gateway account. You will need:

• Your Unique Taxpayer Reference (UTR)

• Your National Insurance number

• Details of your business (start date, expected turnover, bank account)

• Your business address

HMRC typically processes applications within 30 working days. Once approved, you receive a VAT registration certificate with your VAT number, effective registration date, and first return period.

You can also register by post using form VAT1, but the online route is faster.

Voluntary VAT registration

Even if your turnover is below £90,000, you might benefit from voluntary registration if:

• Most of your customers are VAT-registered businesses (they can reclaim the VAT you charge)

• You spend heavily on materials and tools (you can reclaim VAT on your purchases)

• You want to appear more established and professional

If most of your customers are domestic homeowners, voluntary registration usually just means higher prices for them, so it is less beneficial.

Many UK tradespeople also find it helpful to review VAT invoice requirements for UK trades at this stage.

When voluntary registration makes financial sense

Run the numbers before deciding. If you buy £20,000 of materials and tools per year, you can reclaim £4,000 in VAT (at 20%). If your customers are mostly VAT-registered businesses who can reclaim the VAT you charge, you are not really increasing their costs — you are just reclaiming VAT on your inputs.

However, if you work mainly for domestic customers (homeowners), they cannot reclaim VAT. Your prices effectively go up by 20%, which can make you less competitive against non-VAT-registered competitors. In this case, voluntary registration only makes sense if the VAT you reclaim on purchases outweighs the competitive disadvantage.

The Flat Rate Scheme

The Flat Rate Scheme simplifies VAT for small businesses with taxable turnover under £150,000. Instead of tracking VAT on every purchase, you pay a fixed percentage of your gross turnover to HMRC.

Common flat rate percentages for trades:

• General building: 9.5%

• Plumbing: 9.5%

• Electrical: 9.5%

• Painting and decorating: 9.5%

• Roofing: 9.5%

This can be simpler than standard VAT accounting, but may not always save you money — especially if you buy a lot of materials. Under the Flat Rate Scheme, you still charge customers VAT at 20%, but you cannot reclaim VAT on most purchases (except capital goods over £2,000 including VAT).

Flat Rate Scheme example

Suppose you are a plumber who invoices £5,000 (plus £1,000 VAT = £6,000 total) in a quarter. Under the Flat Rate Scheme at 9.5%, you pay HMRC 9.5% of £6,000 = £570. Under standard VAT, you would pay £1,000 (output VAT) minus whatever input VAT you reclaim on purchases.

If you are sorting this alongside other compliance work, read when to register for VAT in the UK.

If you bought £2,000 of materials (with £400 input VAT), standard VAT would mean paying £600 to HMRC. The Flat Rate Scheme saves you £30. But if your materials were £4,000 (£800 input VAT), standard VAT would be only £200 — making the Flat Rate Scheme £370 more expensive.

The scheme works best for trades with low material costs relative to labour.

Filing VAT returns

VAT returns are filed quarterly through HMRC's online system. Each return covers a three-month period, and you have one month and seven days after the end of the period to file and pay.

Invoice your customers in 30 seconds

InvoiceAdept helps UK tradespeople send professional invoices, track payments, and stay MTD-compliant — all from your phone.

Start for free — no card needed

Your return must show:

• Total sales and output VAT charged

• Total purchases and input VAT reclaimable

• The difference — either you owe HMRC or they owe you

Set up a direct debit to avoid missing payment deadlines. Late returns trigger a surcharge — see HMRC's surcharge guidance.

What VAT invoices must include

Once VAT-registered, your invoices must include additional fields:

• Your VAT registration number

• The VAT rate applied to each line item

• The VAT amount

• The total including VAT

• The date of supply (tax point)

For invoices under £250, a simplified VAT invoice is acceptable — you do not need to show the customer's details or break down the VAT separately. Use our invoice generator to create compliant VAT invoices automatically.

The domestic reverse charge for construction

If you provide construction services to another VAT-registered business, the domestic reverse charge may apply. Under this rule, you do not charge VAT on your invoice — instead, your customer accounts for the VAT on their own return.

Related: see how to submit a VAT return online for practical next steps.

The reverse charge applies to most CIS-regulated construction services between VAT-registered businesses. It does not apply to supplies to end users (e.g. homeowners) or to businesses that are not registered for VAT.

Your invoice must state that the reverse charge applies and show the VAT amount that would have been charged. This is a common source of confusion — if you work under CIS and are VAT registered, make sure your accounting software handles it correctly.

Making Tax Digital and VAT

VAT-registered businesses are already required to keep digital records and file VAT returns through MTD-compatible software. This has been mandatory for all VAT-registered businesses since April 2022.

You cannot file VAT returns manually or through the HMRC portal — you must use MTD-compatible software. InvoiceAdept keeps your invoice records fully digital and export-ready for your accountant or bookkeeper.

Common VAT mistakes tradespeople make

• Not monitoring the threshold. Check your rolling 12-month turnover at the end of every month. Late registration means you owe HMRC the VAT you should have charged.

• Claiming input VAT on non-business items. You can only reclaim VAT on goods and services used for your business. Personal purchases, entertaining clients, and buying a car (not a van) are not reclaimable.

• Ignoring the reverse charge. If you are VAT-registered and working under CIS for another VAT-registered business, the reverse charge likely applies. Charging VAT when you should not creates problems for both you and your customer.

• Not keeping VAT receipts. To reclaim input VAT, you need a valid VAT receipt. A card payment receipt from a petrol station is not enough — you need the full VAT receipt showing the supplier's VAT number.

Frequently asked questions

How long does VAT registration take?

Online applications are typically processed within 30 working days. HMRC may ask for additional information, which can extend the process. Once approved, your registration can be backdated to the date you exceeded the threshold or the date you applied (for voluntary registration).

Worth pairing this with our guide to the Flat Rate VAT Scheme for trades.

Can I deregister for VAT if my turnover drops?

Yes. If your taxable turnover falls below £88,000 (the deregistration threshold), you can apply to deregister. This is useful if your business slows down or you switch to part-time work. Apply through your Government Gateway account.

Do I charge VAT on materials I buy for a customer?

Yes. If you buy materials and supply them as part of a job (e.g. buying tiles for a bathroom refit), the materials form part of your supply and are subject to VAT at the standard rate. The customer pays VAT on the full invoice, and you reclaim the VAT you paid when buying the materials.

What is the difference between zero-rated and exempt?

Zero-rated goods (like children's clothing) are taxable at 0% — they still count towards your VAT threshold. Exempt supplies (like some financial services) do not count towards the threshold and you cannot reclaim input VAT related to them. Most trade services are standard-rated at 20%, though some renovation work on residential properties qualifies for 5% reduced rate.

Should I use the Flat Rate Scheme or standard VAT?

If your material and tool costs are low relative to your labour charges, the Flat Rate Scheme often saves money and simplifies your bookkeeping. If you spend heavily on materials (common for builders, kitchen fitters, bathroom installers), standard VAT is usually better because you can reclaim input VAT on all those purchases. Use our VAT calculator to compare the numbers for your situation.

Start creating VAT invoices