Invoice Template

Updated Oct 2026 PDF Free

A free invoice template with line items, tax, and payment terms — fill it in your browser and download a polished PDF the same day.

Invoice
TEMPLATE
Invoice NumberINV-2026-001
ClientAcme Corp
Amount$4,500.00
Due DateFebruary 15, 2026
StatusPending
Overview

About this invoice template

Bill clients without rebuilding your layout every time. This free invoice template gives freelancers, agencies, and small businesses a professional billing format you fill in minutes and download as a print-ready PDF — no spreadsheet formulas, no design work:

  • Built for the way you actually bill — client details, line items with quantities and unit prices, tax, subtotal, and total are already arranged, so every invoice reads the same clean way from header to total.
  • Fill it in and the numbers stay right — enter your rates and tax, then print or save the finished invoice as a PDF on A4 or US Letter with columns that line up.
  • Payment terms are part of the template — add Net 15, Net 30, or Due on Receipt with a due date and payment instructions, so every invoice template you send states exactly how and when you expect to be paid.
  • One client or fifty — duplicate this invoice template, swap the line items and due date, and send. Retainers, milestone billing, and one-off jobs all fit the same structure.
  • Automate via API — teams that generate documents automatically can use the same invoice template through the DocuQueue API, where {{Client_Name}}, {{Line_Items}}, and {{Total}} placeholders are filled from your data and a finished PDF comes back in seconds. See the API documentation.
API

Fill via API

Send JSON data via a single API call to fill this invoice template. Works with any programming language or automation tool.

# Fill invoice with billing data
curl -X POST https://api.docuqueue.com/api/v1/templates/invoice/fill \
  -H "api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "invoice_number": "INV-2026-001",
    "client_name": "Acme Corp",
    "line_items": [
      {"description": "Web Design", "amount": "$3,000"},
      {"description": "SEO Setup", "amount": "$1,500"}
    ],
    "total": "$4,500",
    "due_date": "February 15, 2026"
  }'

# Response: PDF file ready for download
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