VAT Invoice Guide: Everything You Need to Know in 2025

A VAT invoice is a document issued by a VAT-registered business that itemises the VAT charged on a sale, allowing the buyer to reclaim that VAT as input tax. It differs from a regular invoice by including the supplier's VAT number, the applicable VAT rate, and the tax amount as a separate line — all required by law for B2B transactions where the buyer intends to recover VAT.

What Is VAT?

VAT (Value Added Tax) is a consumption tax applied to goods and services in the EU, UK, and over 160 countries worldwide. Unlike US sales tax — charged only at the final point of sale — VAT is collected at every stage of the supply chain.

Businesses collect VAT from their customers and remit it to the tax authority, deducting the VAT they've already paid to their own suppliers (input VAT). Only the end consumer ultimately bears the cost.

Who Needs to Charge VAT?

You must register for VAT when your annual taxable turnover exceeds the threshold in your country. Common thresholds include:

• Germany: €22,000 (Kleinunternehmer) — mandatory above this
• France: €85,800 for goods, €34,400 for services
• UK: £90,000
• Spain: No threshold — VAT registration is mandatory for all businesses
• Netherlands: No threshold — registration mandatory, small businesses may apply for exemption
• Italy: No threshold — registration mandatory for all businesses

Once registered, you must charge VAT on all applicable sales and issue compliant VAT invoices.

Mandatory Fields on an EU VAT Invoice

Under EU VAT Directive 2006/112/EC, a full VAT invoice must include:

• The word "Invoice" (or "Tax Invoice" in some jurisdictions)
• Unique sequential invoice number
• Invoice issue date
• Date of supply (if different from invoice date)
• Your full legal name and address
• Your VAT registration number
• Customer's full name and address
• Customer's VAT number (for B2B transactions)
• Quantity and description of goods or services supplied
• Unit price excluding VAT
• Any discounts or rebates not already reflected in the unit price
• VAT rate applied (percentage)
• Total amount excluding VAT
• Total VAT amount
• Total amount including VAT

Simplified VAT Invoices

For low-value sales, most EU countries allow a simplified invoice with fewer required fields. The thresholds and exact rules differ by country, but the general principle is the same: if the invoice total is below a certain amount, you don't need to include every mandatory full-invoice field.

• UK: Simplified invoices are allowed for supplies totalling £250 or less (inclusive of VAT). They must still show: your name, VAT number, the tax point date, description of goods or services, and the VAT rate — but you can omit the customer's details and the net/gross breakdown.
• EU (general): Member states may allow simplified invoices for transactions under amounts set in national law. The exact threshold varies — check your country's tax authority guidance.

Simplified invoices cannot be used for cross-border B2B sales, or when the reverse charge applies.

UK VAT Invoice Requirements Post-Brexit

Since January 2021, the UK operates its own VAT system, separate from the EU VAT Directive. UK VAT invoices share most of the same mandatory fields as EU invoices, but there are key differences to know:

• No EC Sales List: UK businesses selling goods or services to EU VAT-registered customers no longer file an EC Sales List (ESL). That obligation ended with Brexit.
• Services to EU buyers: When a UK supplier provides services to an EU business, the supply is typically outside the scope of UK VAT. The invoice should reference the customer's EU VAT number and include a note such as "No UK VAT charged — reverse charge applies in the customer's country."
• Goods to EU buyers: UK exports to the EU are zero-rated for UK VAT purposes. The buyer handles import VAT in their own country.
• Northern Ireland special position: Northern Ireland remains within the EU VAT area for goods (but not services). NI suppliers invoicing EU customers for goods must include "GB" before their registration number, and the EU customer's VAT number preceded by their country code.
• Simplified invoice threshold: £250 (vs. varying EU thresholds set by each member state).
• Retention period: HMRC requires VAT records to be kept for 6 years.

Pro-Forma Invoices vs VAT Invoices

A pro-forma invoice looks identical to a VAT invoice but is not one. It is a preliminary document sent before goods are delivered or payment confirmed — often used to request upfront payment from new clients or to give customs authorities an estimated value for imports.

Key distinctions:

• A pro-forma must be clearly labelled "This is not a VAT invoice"
• Your customer cannot reclaim VAT using a pro-forma — only a final VAT invoice qualifies
• A pro-forma does not create a tax point or an accounting obligation
• Once payment is received or goods delivered, issue a proper VAT invoice to replace it

Self-Billing Arrangements

In a self-billing arrangement, the customer — rather than the supplier — raises the invoice on the supplier's behalf. This is common in sectors like publishing, broadcasting, and freight, where buyers aggregate many small supplier payments.

For a self-billing arrangement to be VAT-compliant:

• Both parties must be VAT-registered
• A formal self-billing agreement must be signed before any self-billed invoices are issued
• The self-billed invoice must carry the supplier's VAT number and be clearly marked "Self-billing invoice"
• The supplier must not raise their own invoice for the same supply

VAT Rates by Country (2026)

Standard VAT rates across Europe:

• Germany: 19% standard, 7% reduced (food, books, public transport)
• France: 20% standard, 10% intermediate, 5.5% reduced, 2.1% super-reduced
• Italy: 22% standard, 10% reduced, 5% reduced, 4% minimum
• Spain: 21% standard, 10% reduced, 4% super-reduced
• Netherlands: 21% standard, 9% reduced
• Belgium: 21% standard, 12% intermediate, 6% reduced
• Austria: 20% standard, 13% intermediate, 10% reduced
• Sweden: 25% standard, 12% reduced, 6% super-reduced
• UK: 20% standard, 5% reduced, 0% zero-rated

The Reverse Charge Mechanism

The reverse charge applies when a VAT-registered business in one country sells services to a VAT-registered business in another country (B2B cross-border). Instead of the supplier charging VAT, the buyer self-accounts for it in their own country.

What this means for your invoice:

• Do not add VAT to the invoice amount
• State "Reverse charge — VAT to be accounted for by the recipient" prominently
• Include your client's VAT number
• EU sellers must report the transaction in their EU Sales List (ESL); UK sellers no longer file an ESL post-Brexit

Example: A French developer (FR VAT registered) billing a German company (DE VAT registered) for software development: no French VAT charged. The German company self-accounts for VAT at 19% in Germany. The invoice cites the German client's DE VAT number and the reverse charge notice.

How to Show VAT Correctly on Your Invoice

• List all line items with prices excluding VAT
• Show subtotal excluding VAT
• Show VAT rate and VAT amount as a separate labelled line
• Show the total including VAT as the amount due

Example calculation:

• Web Development Services (40h × €75): €3,000.00 excl. VAT
• Subtotal (excl. VAT): €3,000.00
• VAT at 19% (Germany): €570.00
• Total due (incl. VAT): €3,570.00

Correcting a Wrong VAT Invoice

Errors on VAT invoices — wrong rate, wrong amount, wrong VAT number — must be corrected formally. You cannot simply edit and resend the original document.

The standard correction process:

1. Issue a credit note that references the original invoice number and cancels it in full
2. Issue a new corrected invoice with a new sequential invoice number
3. Notify your customer so they can update their own VAT records

If you have already filed a VAT return that included the incorrect invoice, you may need to correct your return as well. In most EU countries this is done via an amended return or adjustment in the next period — check your country's rules. HMRC in the UK allows errors below £10,000 to be adjusted on the next VAT return rather than requiring an amended submission.

Digital and Electronic Invoice Requirements

The EU is rolling out mandatory structured electronic invoicing (e-invoicing) as part of the VAT in the Digital Age (ViDA) initiative, adopted in March 2025. Key milestones:

• B2G (business to government) — already mandatory in Italy (since 2014/2015), Germany, France, and most EU member states for public sector contracts. The EU standard format is EN 16931 (delivered via Peppol network).
• B2B domestic mandates in force or imminent: Germany (January 2025 — businesses must be able to receive structured e-invoices; issuing mandatory from 2027 for most businesses), Belgium (January 2026), Croatia (January 2026).
• EU-wide B2B e-invoicing: ViDA targets 2028 as the deadline for harmonised digital reporting across all member states.

For now, PDF invoices sent by email remain acceptable in most jurisdictions — provided the PDF is unaltered from the original and your records show authenticity. Countries with active B2B mandates require structured XML formats (e.g., XRechnung in Germany, Factur-X in France).

VAT Invoice for Zero-Rated or Exempt Supplies

When charging 0% VAT (exports, certain services), you still need a VAT invoice that states:

• The VAT rate (0%) and total VAT amount (€0.00 or £0.00)
• The legal basis for zero-rating — e.g., "Zero-rated export — Article 146 EU VAT Directive" or "Zero-rated — VATA 1994 s.30" for UK exports

Record-Keeping Requirements for VAT

Minimum VAT invoice retention periods by country:

• Germany, France, Italy: 10 years
• Spain: 4 years
• Netherlands: 7 years
• UK: 6 years

Digital storage is accepted everywhere, provided invoices are stored in a tamper-proof format and can be retrieved on demand by tax authorities.