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Self-Employed Invoice Template (Free, UK & US) — 2026 Guide

June 26, 2026

Free self-employed invoice template for the UK and US. Includes legal requirements, tax fields, and a downloadable example.

Self-Employed Invoice Template (Free, UK & US) — 2026 Guide

Self-Employed Invoice Template (UK & US)

If you''re self-employed, your invoice is your tax record. Get it wrong and HMRC or the IRS can reject expenses.

UK (HMRC) requirements

  • Trading name and address
  • Unique invoice number
  • Date of issue
  • Customer name & address
  • Description of goods/services
  • Amount charged
  • VAT number (if VAT-registered) and VAT breakdown

US (IRS / 1099) requirements

  • Business name and address
  • EIN or SSN (if requested for 1099)
  • Invoice number and date
  • Itemized services
  • Total amount due
  • Payment terms

Common mistakes

  • Reusing invoice numbers (HMRC requires sequential)
  • Forgetting VAT registration number
  • No payment terms → invoices drift for months

Invoxa auto-numbers invoices, handles VAT/sales tax, and exports HMRC- and IRS-friendly PDFs — free.