Invoice Tax Compliance by Country: VAT, GST and Sales Tax

Invoice tax compliance means your invoices meet the rules of the tax authorities where you and your customers are. In VAT and GST countries, the invoice is a tax document: your customer usually needs a valid one to reclaim the tax you charged, so a missing registration number or the wrong wording costs your customer money, not just you. In the US, the invoice matters for sales tax and income tax records but has no national format.

This guide summarizes the rules for the US, the UK, the EU and five EU member states, Australia, Canada, India and Japan, using each tax authority's own guidance as of October 2026. It is a starting point, not legal or tax advice. Thresholds, rates and dates change, and your obligations depend on what you sell, to whom and where. Confirm with the tax authority or an adviser before you rely on any figure.

What does invoice tax compliance actually involve?

Four obligations are often lumped together. Treat them separately, because they come from different rules and a tool can handle one without handling the others.

A PDF can satisfy the first two and still fail the third in a country with an e-invoicing mandate.

Quick reference by country

Figures are from the official sources linked in each section, as of October 2026.

"Set nationally" means the figure exists but this guide does not reproduce it; check the national authority.

United States: sales tax, records and Form 1099

The US has no federal VAT, no federal sales tax and no federal invoice format. Sales tax is imposed by states and local governments, and each state decides what is taxable, when a seller must register and what a receipt or invoice must show. Since the Supreme Court's decision in South Dakota v. Wayfair (2018), states can require out-of-state sellers to collect sales tax based on their sales into the state, not only physical presence. The sales tax nexus guide explains how those thresholds work, and the state-by-state sales tax pages in our tax hub cover individual states.

Records. The IRS says to keep records for 3 years in most cases, 6 years if you fail to report income that is more than 25% of the gross income on your return, 7 years for a bad-debt or worthless-securities claim, and employment tax records for at least 4 years. Your state may require longer.

Form 1099-NEC. This is an information return, not an invoice rule, but it affects freelancers who invoice businesses. According to IRS Publication 1099, the reporting threshold for nonemployee compensation rose from $600 to $2,000 for payments made after December 31, 2025, with inflation adjustments from 2027. Older guides still quote $600.

United Kingdom: VAT invoices

You must register for VAT if your taxable turnover for the last 12 months goes over £90,000, or if you expect it to go over £90,000 in the next 30 days alone.

Once registered, HMRC's VAT guide (Notice 700) says you must give a VAT invoice to VAT-registered customers for standard- or reduced-rated supplies, normally within 30 days of the tax point. A full VAT invoice shows, among other details:

• a unique sequential invoice number,
• the time of supply (tax point) and the invoice date if different,
• your name, address and VAT registration number,
• your customer's name and address,
• a description of the goods or services, with quantity and unit price,
• the rate of VAT and the VAT amount, and the total excluding VAT.

A simplified invoice is allowed only if the supply is £250 or less (including VAT) and the customer agrees; it needs fewer details. All VAT-registered businesses keep digital records and file returns under Making Tax Digital, and VAT records must be kept for at least 6 years.

Coming change. The government has confirmed it will introduce mandatory e-invoicing for all VAT invoices from 2029, with an implementation roadmap to follow. For the full UK walkthrough, see UK VAT invoice requirements and registering for VAT.

European Union: common rules and the reverse charge

The EU VAT Directive sets common invoice rules that every member state applies, with national additions. The European Commission's VAT invoicing page lists the main contents of a full invoice: issue date, sequential number, supplier and customer names and addresses, the supplier's VAT number, a description and quantity of the goods or services, the date of supply if different, the net unit price, the VAT rate and amount, and a breakdown by rate or exemption.

Reverse charge. When the customer, not the supplier, is liable for the VAT (common for business-to-business services across EU borders), the invoice must show the customer's VAT number and the words "reverse charge". Check the customer's VAT number in the Commission's VIES service and keep a record of the check.

What changes next. The EU adopted the "VAT in the Digital Age" package on March 11, 2025. According to the Commission, digital reporting requirements apply to cross-border business-to-business transactions from July 1, 2030, and member states may now introduce mandatory domestic e-invoicing under specific conditions, which several have done.

Worked example: a cross-border reverse-charge invoice

Worked example with stated inputs: a freelance designer registered for VAT in the Netherlands bills a VAT-registered company in Germany €2,000 for design services. This is a general business-to-business service, so the customer accounts for the VAT in Germany.

The German company then reports German VAT on the €2,000 at the German rate and, if entitled, deducts the same amount. If the invoice omits the customer's VAT number or the words "reverse charge", the customer may struggle to support its VAT treatment. Specific goods, events, property and consumer sales follow different rules; check yours.

Germany, France, Italy, Poland and Belgium: e-invoicing mandates

These five countries have, or are introducing, mandatory structured e-invoicing for domestic business-to-business sales. A structured e-invoice is a machine-readable file (such as XML in a set format) sent through a specified channel; an emailed PDF is not one.

If you sell to businesses in these countries from abroad, the domestic mandates may not apply to you directly, but your customers may ask for a structured invoice. Ask before you send the first one. The e-invoicing glossary entry explains the formats.

Australia: tax invoices and GST

You must register for GST when your GST turnover reaches A$75,000 (A$150,000 for non-profit organisations). The ATO's tax invoice rules set two tiers:

• Sales under A$1,000: the document must be intended as a tax invoice and show the seller's identity and ABN, the date, a description with quantity and price, the GST amount (or "Total price includes GST" where GST is exactly one-eleventh of the total), and the extent to which each sale is taxable.
• Sales of A$1,000 or more: all of the above plus the buyer's identity or ABN.

If a customer asks for a tax invoice, you must provide it within 28 days, unless the sale was A$82.50 or less including GST. The ATO's general rule is to keep records for 5 years from when you prepared or obtained them or completed the transaction, whichever is later.

Worked example: an invoice for A$900 plus A$90 GST totals A$990, under the A$1,000 tier, so the buyer's details are optional. An invoice for A$1,000 plus A$100 GST totals A$1,100 and must show the buyer's name or ABN. A template that always includes the buyer's details works for both.

Canada: GST/HST invoice information

A business that is a small supplier, with C$30,000 or less in worldwide taxable revenue in a single calendar quarter and over the last four consecutive quarters, does not have to register, but may. Rates are 5% GST in non-participating provinces and HST of 13% in Ontario, 14% in Nova Scotia (from April 1, 2025) and 15% in the other participating provinces, according to the Canada Revenue Agency's rate guidance.

What your invoice must show depends on the total, under the CRA's input tax credit rules:

• Under C$100: your business or trading name, the invoice date and the total amount.
• C$100 to C$499.99: add the GST/HST charged (or a statement that the price includes it), your GST/HST registration number, and which items are taxable if the invoice mixes taxable and exempt supplies.
• C$500 or more: add the buyer's name, a brief description and the payment terms.

These tiers replaced the older C$30 and C$150 thresholds in 2021; some guides still use the old figures. GST/HST records must be kept for six years from the end of the year they relate to.

India: GST invoices and e-invoicing

Under rule 46 of the CGST Rules, a GST tax invoice shows the supplier's GSTIN, a serial number unique to the financial year, the recipient's GSTIN if registered, the HSN code for goods or services, the taxable value, the rate and amount of tax under each head (central, state or union territory, integrated, cess), and the place of supply for inter-state supplies. The place of supply decides whether central and state GST or integrated GST applies. Businesses with aggregate turnover above ₹5 crore must register business invoices on the Invoice Registration Portal and obtain an Invoice Reference Number (IRN), under Notification 10/2023 effective August 1, 2023.

Rates changed recently. Following the 56th GST Council meeting, the main structure moved from four slabs (5%, 12%, 18% and 28%) to two main rates of 5% and 18%, plus a 40% rate for specified goods, from September 22, 2025. Templates and price lists built before then may still show 12% or 28%.

Japan: the qualified invoice system

Since October 1, 2023, buyers generally need a qualified invoice from a registered issuer to claim a full purchase tax credit. A qualified invoice shows the issuer's name and registration number, which is the letter T followed by 13 digits (the corporate number for companies). Buyers can look up the number on the National Tax Agency's public site. Transitional rules allow a partial credit for purchases from unregistered sellers, with the percentage stepping down over time; check the NTA's current schedule, as published figures have been revised.

Which mistakes cause the most trouble?

Most invoice compliance problems are not exotic. They are old figures and missing details.

1. Using last year's rate or threshold. India's GST rates (September 2025), Nova Scotia's HST (April 2025), the US Form 1099-NEC threshold (payments after 2025) and Germany's invoice retention period (now 8 years) all changed recently. Date-stamp your templates and recheck them yearly; tax rate changes in 2026 collects recent ones.
2. Leaving off your registration number. In VAT and GST countries your customer usually needs it to reclaim the tax you charged.
3. Reverse charge without the words. "No VAT" is not the same as "reverse charge". Use the wording the rules require and show the customer's VAT number.
4. Sending a PDF where a structured e-invoice is required. In Italy, Poland and Belgium, and increasingly in Germany and France, the PDF may not count as the invoice.
5. One tax line where two are needed. Indian GST invoices must show the tax under each head (central and state, or integrated). Where two different taxes apply to one sale, such as GST and a provincial sales tax in some Canadian provinces, each is a separate amount.

Consequences vary by country, from denied input tax credits for your customer to penalties for you. The guide on tax invoices versus regular invoices and the glossary entry on tax invoices cover the basics.

What InvoiceQuickly does and does not do for tax

InvoiceQuickly is an invoicing tool, not a tax engine. It does not decide which tax applies to you or check your invoices against any country's rules. What it does:

• One tax rate and one discount per invoice, both percentages. Tax is calculated on the discounted subtotal and added to it (prices are tax-exclusive). The PDF shows a single line labelled "Tax" with the rate.
• Saved tax IDs print on new invoice PDFs. You can save your business tax ID in settings and each client's tax ID on their saved record, and new invoice PDFs print both, labelled "Tax ID". Invoices created before you saved them are not updated. If your invoice must show a second registration number, a "Tax invoice" heading or wording such as "Reverse charge", put it in the invoice notes or terms.
• PDF only, in English. Invoices use US-style number and date formatting. There are no structured e-invoice formats (no Peppol, XRechnung, Factur-X, FatturaPA, KSeF or Indian IRN), so it is not suitable for sales that must be e-invoiced.
• Not supported: multiple tax lines (for example GST plus provincial sales tax, or CGST plus SGST), tax-inclusive pricing, per-line tax rates and automatic rate lookup.

If you invoice clients who only need a clear PDF with a single tax rate, it can do that; anything beyond is your responsibility or a job for a tool built for your country. See international invoicing for cross-border practice, browse invoice templates for layout ideas (they are reference layouts, not compliance checks), and use the late fee calculator if you charge interest on overdue invoices.

Frequently asked questions

What are the requirements for tax compliance on an invoice?

In VAT and GST countries, a valid invoice generally shows your registration number, a unique sequential number, the date, the customer's details (above certain amounts or for business customers), a description of what you sold, the tax rate and tax amount, and the total. In the US, there is no federal format; sales tax rules come from each state. Check the tax authority for each country you invoice in.

What are the e-invoicing regulations?

They require business invoices to be issued as structured electronic files through a set channel, rather than as paper or PDF. Italy (since 2019), Belgium (since January 2026), Poland (from February 2026) and India (above ₹5 crore turnover) already require this for domestic business sales; France and Germany are phasing it in from 2026 to 2028; the UK has announced it for 2029; and the EU will require digital reporting for cross-border business sales from July 2030.

What are the GST billing rules?

It depends on the country. In Australia, a tax invoice must identify the seller and ABN, and from A$1,000 also the buyer. In Canada, the required details step up at C$100 and C$500. In India, invoices show GSTINs, HSN or SAC codes and place of supply, and larger businesses must register invoices for an IRN. Each country's GST authority publishes the full list.

Is a PDF invoice an e-invoice?

Not for e-invoicing mandates. A mandated e-invoice is a structured, machine-readable file in a prescribed format sent through an approved channel. A PDF can still be a valid invoice where no mandate applies, such as in the US and, until the mandate starts, the UK.

Do I need to show my VAT number on every invoice?

If you are VAT-registered in the UK or the EU, yes: VAT invoices must show your VAT registration number. For reverse-charge sales in the EU, the customer's VAT number must also appear.

How long should I keep invoices?

It varies: generally 3 years in the US (longer in some cases), at least 6 years for UK VAT records, 8 years in Germany, generally 5 years in Australia and 6 years in Canada. Keep them longer if a tax return they support is still open to review.

Does charging tax on an invoice make it compliant?

No. Adding a tax line is only the calculation part. Compliance also depends on the details shown, the format and channel where e-invoicing is mandatory, and your reporting and record keeping.

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Last reviewed: October 27, 2026. Jurisdictions covered: United States (federal), United Kingdom, European Union (general rules), Germany, France, Italy, Poland, Belgium, Australia, Canada, India and Japan. Rules are summarized from each tax authority's published guidance on that date and simplified; they do not cover every type of supply, exemption or special scheme. This guide is general information, not legal or tax advice. Check with the tax authority or a qualified adviser before relying on it.