UK Freelancer Invoice Guide Post-Brexit (2026)

UK freelancer invoicing in 2026: what has changed

Since Brexit took full effect on 1 January 2021, UK freelancers no longer operate within the EU VAT system. The reverse charge mechanism that previously applied to cross-border EU services no longer applies to UK businesses. This means that UK freelancers invoicing EU clients must treat those sales as exports of services — a fundamentally different tax treatment. Meanwhile, domestic UK invoicing rules remain governed by HMRC, and the Making Tax Digital (MTD) programme has expanded to include income tax self-assessment for many sole traders. This guide covers everything a UK freelancer needs to know to invoice correctly in 2026.

Required fields on a UK invoice

HMRC specifies the information that must appear on a valid VAT invoice. Even if you are not VAT-registered, it is good practice to include most of these fields:

- Your name or business name and address - Your VAT registration number (if VAT-registered) - A unique, sequential invoice number - The invoice date - The date of supply (the tax point), if different from the invoice date - Your client's name or company name and address - A description of the goods or services supplied - The quantity and unit price for each item - The total net amount (excluding VAT) - The VAT rate applied and the VAT amount (if VAT-registered) - The total amount including VAT

Note: Your UTR (Unique Taxpayer Reference) is not required on invoices. It is used for self-assessment tax returns, not for invoicing. Do not include it on invoices sent to clients.

VAT registration threshold

The UK VAT registration threshold is 90,000 GBP (as of the 2024/25 tax year, and unchanged for 2025/26). You must register for VAT if your taxable turnover exceeds this amount in any rolling 12-month period, or if you expect it to exceed the threshold in the next 30 days alone.

Once registered, you must charge VAT on all taxable supplies at the appropriate rate (20% standard, 5% reduced, or 0% zero-rated) and submit VAT returns to HMRC — quarterly for most businesses.

You can also voluntarily register for VAT below the threshold. This allows you to reclaim VAT on business expenses, which can be beneficial if you have significant input costs (equipment, tool, subcontractors). However, it means you must charge VAT to all UK clients, which can increase your prices to non-VAT-registered clients.

The Flat Rate Scheme

Invoicing EU clients post-Brexit

Since Brexit, the EU reverse charge mechanism no longer applies to UK freelancers. When you invoice an EU business client for services:

- You do not charge UK VAT. The supply is outside the scope of UK VAT because the place of supply for B2B services is where the customer belongs (the "general rule" under UK VAT legislation, mirroring the pre-Brexit position) - You must state on the invoice that the supply is "outside the scope of UK VAT" or words to that effect - Your EU client will self-assess VAT in their own country under their domestic reverse charge rules - You do not need an EU VAT number. Your UK VAT number is sufficient

However, if you supply services to EU consumers (B2C), different rules may apply depending on the service type. Digital services to EU consumers may fall under the EU One Stop Shop (OSS) scheme, requiring you to register and charge VAT in the consumer's country. Consult HMRC guidance or an accountant for B2C digital services.

Currency considerations

UK invoices are typically issued in GBP. When invoicing international clients, you may issue invoices in the client's currency (EUR, USD, etc.), but for VAT reporting purposes, you must convert the amounts to GBP using HMRC-approved exchange rates. HMRC publishes monthly exchange rates, or you can use the actual exchange rate on the date of the transaction.

If you invoice in a foreign currency, clearly state the currency on the invoice and keep a record of the exchange rate used for your VAT return calculations.

Making Tax Digital (MTD)

UK VAT invoice types (HMRC categories)

HMRC recognises three types of VAT invoice:

- Full VAT invoice: Required for supplies over 250 GBP. Must include all fields listed above. - Simplified VAT invoice: Allowed for supplies of 250 GBP or less. Can omit the client's name and address, and show VAT-inclusive prices rather than separate net and VAT amounts. - Modified VAT invoice: For retail supplies over 250 GBP where showing unit prices is impractical. Shows VAT-inclusive totals.

Most freelancers issue full VAT invoices for all supplies, which is the safest approach and avoids disputes about which format applies.

How Invoicey handles UK freelancer invoicing

Invoicey supports UK freelancers with built-in compliance features:

- Automatically applies UK VAT at 20% (or zero-rates/exempts where configured) - Detects when you are invoicing an EU or international client and adjusts VAT treatment accordingly — marking the supply as outside the scope of UK VAT for B2B exports of services - Supports multi-currency invoicing with automatic exchange rate recording - Generates sequential invoice numbers compliant with HMRC requirements - Produces PDF invoices with all HMRC-required fields - Maintains digital records compatible with MTD for VAT and the upcoming MTD for ITSA - Supports the Flat Rate Scheme — display the standard VAT rate to your client while tracking your FRS percentage internally

Whether you are invoicing a London agency in GBP or a Berlin startup in EUR, Invoicey makes sure your invoices are correct.