Legal Requirements for Invoices in Different Countries
Understand the legal requirements for invoices across various countries to ensure your documents are compliant and valid.

Why Invoice Compliance Matters
In today's global business environment, understanding invoice regulations isn't just good practice—it's essential for legal compliance. Improper invoicing can lead to:
- Rejected tax deductions
- Delayed payments
- Tax penalties and audits
- Difficulties with international business partners
- Legal disputes
This guide covers key invoice requirements across major markets to help you ensure compliance regardless of where you do business.
Common Elements Required in Most Countries
While specific requirements vary by country, most jurisdictions require these basic elements on all invoices:
- Unique invoice number
- Issue date
- Supplier and customer names and addresses
- Description of goods or services
- Quantities and rates
- Total amount due
- Payment terms
However, tax regulations, required statements, and specific formatting can differ significantly between countries.
United States
The U.S. has relatively flexible invoice requirements compared to many other countries, with most regulations set at the state level rather than federally.
Federal Requirements
The IRS doesn't mandate a specific invoice format but requires sufficient information to substantiate business expenses, including:
- Business name and contact information of both parties
- Transaction date
- Brief description of goods/services
- Amount paid
State-Specific Requirements
Sales tax requirements vary by state. In states with sales tax:
- You must separately state the sales tax charged
- Include your sales tax permit number if you're collecting tax
- Some states require specific language about tax exemptions when applicable
European Union
The EU has standardized invoice requirements across member states through VAT Directives, though some country-specific variations exist.
Required Elements for All EU Invoices
- Date of issue
- Sequential invoice number
- Supplier's VAT identification number
- Customer's VAT identification number (for certain cross-border transactions)
- Full names and addresses of supplier and customer
- Quantity and nature of goods/extent and nature of services
- Date of supply (if different from invoice date)
- Taxable amount per rate, unit price, and any discounts
- VAT rate applied
- VAT amount payable
- If VAT exempt or reverse charge applies, reference to applicable provision
Country-Specific Variations
Despite EU standardization, some country-specific requirements still exist:
Germany
German invoices require:
- The term "Rechnung" (invoice) clearly visible
- Supplier's tax number (Steuernummer) AND VAT ID
- For small businesses exempt from VAT: statement indicating VAT exemption
France
French invoices must include:
- The term "Facture" clearly visible
- Supplier's SIRET number (business identification)
- Legal form and capital of the company
- Late payment penalties and fixed compensation for recovery costs
United Kingdom (Post-Brexit)
After Brexit, the UK maintains similar requirements to the EU but with some distinctions:
- VAT registration number (if VAT registered)
- The time of supply (tax point) if different from invoice date
- For each different VAT rate, the total excluding VAT
- Rate of VAT charged
- For zero-rated supplies, specify "zero-rated"
- For VAT-exempt supplies, reference that exemption
Australia
For invoices over AUD 1,000 (tax invoices), Australia requires:
- The words "Tax Invoice" stated prominently
- Supplier's identity and Australian Business Number (ABN)
- Date of issue
- Brief description of items sold
- The GST amount (or statement that total includes GST)
- Extent to which each sale is taxable
- Recipient's identity or ABN for invoices over AUD 1,000
Canada
For GST/HST purposes, invoices must include:
- Supplier's business name or trading name
- Invoice date
- Total amount paid or payable
- GST/HST registration number for invoices over CAD 30
- Separate display of GST/HST amount or statement that prices include tax
- Brief description of goods or services
- Terms of payment
Japan
Japanese invoicing became more standardized with the 2023 Qualified Invoice System:
- The words "Qualified Invoice" (適格請求書)
- Supplier's name and registered number
- Issue date
- Customer's name
- Description of goods/services
- Applicable tax rate(s)
- Tax amount by tax rate
- Total amount
Electronic Invoicing Requirements
Many countries now accept or mandate electronic invoicing. Key considerations include:
EU E-Invoicing
Electronic invoices must:
- Ensure authenticity of origin
- Maintain integrity of content
- Ensure legibility
- Use qualified electronic signatures, EDI, or business controls that create audit trails
Latin America
Countries like Brazil, Mexico, and Chile have pioneered mandatory e-invoicing:
- Real-time clearance models where invoices must be authorized by tax authorities
- Digital signatures required
- Specific technical formats (usually XML)
Record Keeping Requirements
How long should you keep invoice records? It varies by country:
- United States: Generally 7 years
- European Union: Minimum 5 years, up to 10 years in some countries
- United Kingdom: 6 years
- Australia: 5 years
- Canada: 6 years
- Japan: 7 years
Best Practices for International Invoicing
- Research country-specific requirements before doing business
- Use invoicing software that supports international compliance
- Include all required fields for both countries in cross-border transactions
- Clearly state the currency and applicable exchange rates
- Include a statement about which country's tax laws apply
- Consider local language requirements (some countries require invoices in the local language)
- Maintain thorough documentation of all transactions
Conclusion
Invoice compliance is a complex but essential part of global business. Using a professional invoice generator like ours can help ensure your documents meet the necessary requirements across different jurisdictions.
While this guide provides a general overview, regulations change frequently, and it's always advisable to consult with a tax professional familiar with the specific countries where you do business.
To simplify your invoicing process and help you comply with various legal requirements, try our free online invoice generator. Create, customize, and download professional, legally compliant invoices instantly.
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