Invoice Generator

What every invoice needs

Tax handling

• Tax-inclusive pricing (common in the EU / UK): each line item’s price already contains VAT; the invoice backs it out.
• Tax-exclusive pricing (common in the US): each line item is net; tax is added at the subtotal line.
• Multiple tax rates (e.g. UK: 20% standard, 5% reduced, 0% zero-rated) can be applied per line.
• Reverse charge: B2B EU cross-border services put VAT responsibility on the buyer; your invoice must say “VAT reverse charge applies” and omit the VAT line.

Numbering and compliance

Invoice numbers must be sequential and unique. Most jurisdictions forbid gaps (you cannot skip an invoice number), even if a draft was never sent. The generator auto-increments and warns if you try to duplicate a number.

Some countries (Italy, Portugal, Spain, parts of Latin America) require invoices to be reported to the tax authority in real time (e-invoicing, SdI, SII). This tool does not submit to those portals, use dedicated e-invoicing software if that applies to you.

Common mistakes

• Re-using invoice numbers. If you void an invoice, issue a credit note referencing it; do not reuse the number.
• Missing VAT/GST registration number. Without it, the buyer often cannot reclaim the tax.
• Vague descriptions. “Consulting, May” does not meet the “description of goods/services” requirement in most jurisdictions. Include dates, hours or project codes.
• Wrong currency symbol or decimal separator. €1,200.00 means twelve hundred in the US but 1.2 (point two) in many EU countries. Either follow local convention or spell out the amount to avoid ambiguity.