UK Domestic VAT Guide 2026 — Registration, Rates & Filing

Do I need to register for VAT?

UK VAT Registration Decision Tree

There are three tests. If any one of them applies, you must register.

The £90,000 Rolling 12-Month Threshold

Add up your total taxable sales from the last 12 months. Not your financial year — a rolling window that you should check every month. If that total exceeds £90,000, you must register.

Every sales channel counts as one pot. Your Shopify store, your Instagram orders paid via Stripe links, your market stall — all of it adds up together. If you sold £60,000 on Shopify and £35,000 through Instagram, that’s £95,000. You’ve crossed the threshold.

“Taxable turnover” means everything you sell that would be subject to VAT at any rate — standard, reduced, or zero. It does not include exempt supplies like insurance or financial services.

The 30-Day Forward-Look Test

Even if your past 12 months are under £90,000, ask yourself: do you expect to go over £90,000 in the next 30 days alone? Maybe you just landed a massive wholesale order. If yes, you must register immediately — don’t wait for the rolling test to catch up.

Should I Voluntarily Register for VAT?

If you’re under £90,000 and don’t expect to breach it, you can still choose to register voluntarily. Nobody forces you, but there are reasons you might want to.

Benefits:

• You can reclaim VAT on your business purchases (yarn, packaging, Shopify subscription, shipping, equipment). This puts money back in your pocket.
• You look more professional to business customers. Some larger buyers won’t work with unregistered suppliers.

Drawbacks:

• You now have to charge VAT on everything, which makes your prices 20% higher for consumers who can’t reclaim it.
• You take on compliance obligations — quarterly returns, digital record-keeping, invoice rules.

For most small B2C sellers under the threshold, voluntary registration isn’t worth it. For sellers who mostly sell to other businesses, it often is.

What If I’m Below the VAT Threshold?

If none of the three tests apply, you have no VAT obligations beyond monitoring. But there are two things you must do:

1. Track your rolling 12-month turnover every month. Don’t wait until year-end to discover you crossed the threshold six months ago.
2. Do not charge, show, or mention VAT on any receipt or invoice. You are not registered. Quoting a VAT amount or putting “incl. VAT” on a receipt when you’re not registered is illegal.

How to Register for UK VAT

UK VAT Compliance Decision Tree

Deadline

You must register within 30 days of the end of the month you crossed the threshold. If your rolling 12-month turnover hits £90,000 in March, you have until 30 April to register.

Miss this deadline and HMRC will backdate your registration to when you should have registered. You’ll owe VAT on all sales from that date — even though you didn’t charge your customers for it. That comes out of your own pocket.

The process

Register online at gov.uk/register-for-vat. You’ll need your business details, bank account information, and records of your turnover. Processing typically takes 10–14 working days.

What you get

You’ll receive a VAT Registration Number in the format GB followed by 9 digits (e.g. GB123456789) and an effective date of registration. From that date, everything changes — you must charge VAT on all taxable sales.

Standard VAT vs Flat Rate Scheme — Which Is Right for You?

Once registered, you pick how you account for VAT. There are two main options.

Standard VAT accounting

This is the default. You charge VAT on your sales (output VAT) and reclaim VAT on your business purchases (input VAT). Every quarter, you pay HMRC the difference.

Use this if you have significant business costs where you’re paying VAT — materials, equipment, professional services, shipping.

Flat Rate Scheme

If your taxable turnover is under £150,000, you can opt for the Flat Rate Scheme. Instead of tracking VAT on every purchase, you pay HMRC a fixed percentage of your total turnover. The percentage depends on your industry.

It’s simpler but you cannot reclaim input VAT on most purchases (with a few exceptions like capital assets over £2,000). For businesses with low costs, the flat rate can actually save money. For businesses with high material costs (like a crochet seller buying lots of yarn), standard accounting is usually better because you reclaim more.

UK VAT Rates: 20%, 5%, and Zero-Rated Goods

Not everything is taxed at the same rate. You must apply the correct rate for each product you sell.

Standard rate: 20%

This is the default. If your product doesn’t fall into a specific reduced or zero-rated category, it’s 20%. Most physical goods, adult clothing, homewares, craft supplies, digital services, and professional services are standard-rated.

Reduced rate: 5%

A small number of categories qualify for 5%. The main ones relevant to online sellers are domestic energy (gas, electricity), child car seats, and some energy-saving materials. Most online sellers won’t encounter this rate.

Zero rate: 0%

Zero-rated goods are still “taxable” (they count toward your £90,000 threshold) but the rate is 0%, so you charge nothing. Key categories:

• Most food (but not hot takeaway, restaurant meals, confectionery, alcohol, or soft drinks)
• Children’s clothing and footwear designed and suitable only for children under 14, meeting HMRC’s size specifications. One-size-fits-all items that adults could also wear don’t qualify. See HMRC Notice 714 for the exact size requirements.
• Books and publications including physical books and ebooks (since May 2020)
• Prescription medicines dispensed by a registered pharmacist

Exempt

Some supplies are exempt from VAT entirely — insurance, financial services, some education and health services. Exempt supplies don’t count toward your £90,000 threshold and you can’t reclaim input VAT on costs related to making them.

If you only sell exempt goods, you cannot register for VAT at all.

VAT-Inclusive vs VAT-Exclusive Pricing

Selling to consumers (B2C)

The UK norm is VAT-inclusive pricing for consumer sales. The price on your website is the price the customer pays. The VAT is buried inside it.

Example: You list a crochet hat at £24. That’s actually £20 net + £4 VAT. You keep £20. HMRC gets £4. Your customer just sees “£24.”

This is what consumers expect in the UK. Nobody wants to see £20 at checkout and then get hit with £24 at the payment page.

Selling to businesses (B2B)

The UK norm is VAT-exclusive pricing for business sales. You quote £20 and the buyer knows VAT will be added on top, making the total £24. They reclaim the £4 from HMRC on their own VAT return, so the real cost to them is £20.

Mixed audience

If you sell to both consumers and businesses, you have three options:

1. VAT-inclusive for everyone. Simplest. Consumers see the full price. Business buyers calculate back to the net amount themselves.
2. VAT-exclusive for everyone. B2B-friendly but consumers get surprised at checkout.
3. Switch based on buyer type. Best experience but requires your checkout to ask “Are you buying as a business?” and adjust pricing accordingly.

Most small online sellers go with option 1 and let business buyers figure it out.

UK VAT Invoice Requirements — B2C Receipts and B2B Invoices

The type of document depends on who you’re selling to and how much the transaction is worth.

Consumer sales (B2C)

For transactions of £250 or less, you can issue a simplified receipt. It must show:

• Your business name and address
• Your VAT registration number
• The date
• A description of the goods
• The VAT rate applied
• The total amount including VAT

For transactions over £250 to consumers, you must issue a full VAT invoice (same as B2B below).

Business sales (B2B)

You must issue a full VAT invoice within 30 days of the sale. It must include:

• A unique sequential invoice number
• The invoice date
• The date of supply if different from the invoice date
• Your business name, address, and VAT number
• The buyer’s name and address
• The buyer’s VAT number if they provide one
• A description of each item with quantity and unit price
• The VAT rate applied to each line
• The net amount per line (before VAT)
• The total VAT amount
• The total gross amount (including VAT)

This is not optional. Missing fields can mean your buyer can’t reclaim their input VAT, and HMRC can challenge your records in an audit.

How to Reclaim Input VAT on Business Purchases

This is the part most small sellers miss. VAT registration isn’t just about charging VAT — it’s also about getting VAT back on your business costs.

Every time you buy something for your business from a VAT-registered supplier, you’re paying VAT on it. As a registered business, you can reclaim that VAT. Common reclaimable costs for online sellers:

• Raw materials (yarn, thread, fabric, beads)
• Packaging and shipping supplies
• Your Shopify or WooCommerce subscription
• Postage (Royal Mail, courier services)
• Business equipment (laptop, printer, sewing machine)
• Professional services (accountant, designer)
• Business phone and internet (business-use portion)

You need a valid VAT invoice from the supplier to reclaim. A till receipt from a high-street shop usually isn’t enough unless it shows the supplier’s VAT number and a VAT breakdown. Keep every invoice.

On the Flat Rate Scheme, you generally cannot reclaim input VAT, except on capital purchases over £2,000 including VAT.

UK VAT Record-Keeping and Making Tax Digital

You must keep digital records of:

• All sales and the VAT charged on each
• All purchases and the VAT paid on each
• A VAT account summarising the totals

These records must be stored in MTD-compatible software — not spreadsheets, not paper files. HMRC can request them at any time.

Keep everything for at least 6 years. That’s how far back HMRC can audit.

How to File UK VAT Returns — Deadlines and MTD

The VAT return

Every quarter, you file a VAT return. It’s a summary of:

• Box 1: Total VAT you charged on sales (output VAT)
• Box 4: Total VAT you paid on purchases (input VAT)
• Box 5: The difference — this is what you owe HMRC (or what they owe you if Box 4 is bigger)

If you paid more input VAT than you charged output VAT (common for new businesses buying lots of stock), HMRC refunds you.

Filing method

All VAT-registered businesses must file through Making Tax Digital (MTD) compatible software. You cannot just log into the HMRC website and type numbers in. You need software like FreeAgent, Xero, QuickBooks, or similar that connects to HMRC’s API.

Deadline

Your VAT return and payment are due 1 month and 7 days after the end of each quarter.

Concrete examples:

Quarter	Period	Deadline
Q1	January – March	7 May
Q2	April – June	7 August
Q3	July – September	7 November
Q4	October – December	7 February

Set a calendar reminder. Don’t rely on HMRC to chase you.

UK VAT Penalties — Late Registration, Filing, and Payment

HMRC’s penalty regime for VAT covers three things:

Late registration

If you should have registered but didn’t, HMRC will backdate your registration. You’ll owe VAT on all sales from the date you should have registered. Since you didn’t charge your customers for it, that money comes from your margin. HMRC may also charge a penalty and interest on the unpaid VAT.

Late filing

Each late return earns you a penalty point. Once you hit the threshold (currently 4 points for quarterly filers), you get a £200 penalty for that return and every subsequent late return until the points reset.

Late payment

If you don’t pay on time, HMRC charges interest from the day after the deadline. If payment is more than 15 days late, there’s an additional penalty of 2% of the outstanding amount. After 30 days, another 2%. After that, a daily rate of 4% per year until you pay.

Common mistakes to avoid

• Forgetting to include Instagram/Stripe/market stall sales in your threshold calculation
• Not registering quickly enough after crossing £90,000
• Charging VAT before you’re registered (or showing “incl. VAT” when you’re not)
• Failing to issue proper VAT invoices to business customers
• Not keeping VAT invoices from suppliers (so you can’t reclaim input VAT)
• Filing returns late because you forgot the deadline
• Using non-MTD-compatible software or spreadsheets for your records