VAT Invoice Template: Required Fields, Full vs Simplified (2026)

A VAT invoice isn't a regular invoice with "VAT" written on it — it's a legally defined document. Your customer uses it to reclaim the VAT you charged, which means tax authorities dictate its fields, and a missing field can void your customer's deduction and earn you penalties. The good news: the required list is short and identical in structure across the UK and EU, and once your template has the fields, every invoice after is routine.

This guide gives you the template, a filled-in example, the simplified-invoice thresholds, and the special wordings (reverse charge, exemption). For the broader picture of tax documents across countries, see tax invoices.

Who needs this template

You must issue VAT invoices if you're VAT-registered and selling taxable goods or services to other businesses (B2B always; B2C rules vary by country). If you're not VAT-registered — below the threshold, or in a country without VAT like the US — you must NOT charge VAT or issue VAT invoices; use a standard invoice and, where useful, state why no VAT is charged.

The template

                              INVOICE

[Your business name]                    Invoice #: [sequential]
[Registered address]                    Issue date: [date]
VAT number: [GB123456789 / EU VAT ID]   Supply date: [if ≠ issue date]
                                        Due date: [date]

BILL TO
[Customer business name]
[Customer address]
[Customer VAT number — B2B EU cross-border: required]

---------------------------------------------------------------------
DESCRIPTION                    QTY   UNIT PRICE   VAT %      NET
---------------------------------------------------------------------
[Goods/services description]   [#]    [£0.00]    [20%]    [£0.00]
[Goods/services description]   [#]    [£0.00]    [ 5%]    [£0.00]

---------------------------------------------------------------------
                                     Net total:           [£0.00]
                                     VAT @ 20%:           [£0.00]
                                     VAT @ 5%:            [£0.00]
                                     TOTAL DUE:           [£0.00]
---------------------------------------------------------------------

PAYMENT: [bank details — include IBAN/BIC for EU transfers]
[Special wording if applicable — see below]

Versus a standard invoice, five things are new and non-negotiable:

1. Your VAT registration number — the field that makes it a VAT invoice at all.
2. Supply date (tax point) when it differs from the issue date — VAT is accounted for by tax point, not invoice date.
3. VAT rate per line — because different items can carry different rates (standard, reduced, zero).
4. VAT shown separately per rate — net total, then VAT amount at each rate, then gross. One blended "total inc. tax" is not compliant.
5. Customer's VAT number for EU cross-border B2B — it's what justifies zero-rating/reverse charge.

Filled-in example (UK freelancer)

Harper Web Ltd                          Invoice #: 2026-041
12 Croft Lane, Bristol BS1 4DJ          Issue date: 16 Aug 2026
VAT number: GB 987 6543 21              Due: 15 Sep 2026 (Net 30)

BILL TO: Alder & Finch Ltd, 3 Mercer St, London WC2H 9QA

Website redesign — fixed fee        1     £3,200.00   20%   £3,200.00
Hosting setup & migration           1       £400.00   20%     £400.00

                                        Net total:        £3,600.00
                                        VAT @ 20%:          £720.00
                                        TOTAL DUE:        £4,320.00

Payment: Starling Bank — sort 60-83-71, acct 12345678

Alder & Finch reclaims that £720 from HMRC — but only because the invoice carries Harper Web's VAT number and shows the VAT separately. That's the whole system: your invoice is their evidence.

Full vs simplified VAT invoice

Most VAT regimes allow a shorter document for small amounts:

| | Full VAT invoice | Simplified invoice | |---|---|---| | UK threshold | Above £250 (inc. VAT) | Up to £250 (inc. VAT) | | EU threshold | Above €400 (varies by state) | Up to ~€400 (varies) | | Customer details | Required | Can be omitted | | Per-rate VAT breakdown | Required | Rate + gross is enough | | Use case | Normal B2B invoicing | Receipts, small sales |

For freelance and B2B service work, just always issue the full version — the simplified form exists for retail-scale volumes, and a full invoice is never wrong.

Special wordings you may need

Certain situations require a specific sentence on the invoice — these are the ones worth keeping in your template as toggles:

Reverse charge (EU cross-border B2B services) — you invoice at 0% and the customer self-accounts for VAT in their country. Their VAT number must be on the invoice, plus:

VAT reverse charge: customer to account for VAT to the relevant tax authority. Article 196, EU VAT Directive.

Zero-rated exports (goods leaving the VAT area):

Zero-rated export — 0% VAT. Proof of export retained.

Exempt supplies (education, some financial services…):

Exempt supply — no VAT charged. [Legal basis reference.]

Margin schemes / special regimes (second-hand goods, tour operators) each have mandated phrases — check your regime's exact wording.

Selling services outside the VAT area entirely (e.g., a UK developer billing a US client) is typically outside the scope of VAT — no VAT line, and your normal international invoicing rules apply, including currency handling.

The mistakes that actually cause trouble

1. Charging VAT without being registered. Collecting VAT you're not entitled to collect is the serious one — it's not yours, and issuing "VAT invoices" without a registration number is fraud territory. Don't add VAT "to be safe."
2. Blended totals. "Total inc. VAT: £4,320" without the net/VAT split invalidates the invoice for the customer's reclaim.
3. Missing sequential numbering. VAT regimes require sequential, gap-explainable invoice numbers — the same discipline covered in invoice number format, but here it's statutory.
4. Wrong tax point. Prepayments create a tax point at payment, not delivery — a deposit received in June belongs in June's VAT return even if you invoice the balance in August. (Deposit invoices + VAT need this care.)
5. No customer VAT number on reverse-charge invoices. Without it, the zero-rating fails and the VAT becomes your liability.
6. Corrections by deletion. A wrong VAT invoice is fixed with a credit note and a new invoice — never by editing or deleting the original; the sequence must survive audit.

Also note where e-invoicing mandates are headed: a growing list of EU countries require structured electronic invoices for B2B (not PDFs) — status and formats in e-invoicing.

Keep records like it matters (it does)

VAT invoices — issued and received — must be retained for 6 years in the UK, and up to 10 in some EU states, because a VAT audit reconstructs both sides of every reclaim. The general retention rules are in how long to keep invoices; VAT sits at the strict end of them.

The template above, your registration number, per-rate math, and sequential numbering — that's a compliant setup. The free invoice generator handles the layout, per-line tax rates, and the arithmetic; you supply the registration number and the right rate.

FAQ

What makes an invoice a "VAT invoice"?

Your VAT registration number, per-line VAT rates, and VAT amounts shown separately from the net — on top of the standard invoice fields. Those elements are what let your customer reclaim the tax, which is the document's legal function.

Can I issue a VAT invoice if I'm not VAT registered?

No. Not registered means no VAT charged, no VAT number, no VAT invoice — a standard invoice only. Many small businesses add a line like "Not VAT registered — no VAT charged" to preempt the question.

What VAT rate do I put on the invoice?

The rate applicable to each line item in your country: standard (UK 20%), reduced, or zero, per item — which is exactly why the template has a per-line rate column. When lines carry different rates, the summary must break VAT out by rate.

Do US businesses ever need a VAT invoice template?

Not for domestic work — the US has sales tax, not VAT, and a standard invoice with a tax line suffices. A US business selling into VAT countries may face VAT/GST registration obligations (especially for digital services) — at which point local invoice rules apply.

What's the difference between a VAT invoice and a tax invoice?

"Tax invoice" is the umbrella term (full guide) — Australia and India call their GST documents tax invoices; the UK/EU call theirs VAT invoices. Same concept: a legally defined invoice that documents recoverable tax.

How do I invoice a deposit under VAT?

The deposit payment creates its own tax point: issue a VAT invoice for the deposit when you receive it, accounting for VAT then — and a final VAT invoice for the balance later. Skipping the deposit-stage VAT invoice is mistake #4 above and a common audit finding.