InvoiceGen Help Center
Quick guides to help you create professional invoices.
How to Add Line Items to Your Invoice
Learn how to add, edit, reorder, and remove line items on your invoice. Step-by-step guide to building itemized invoices with InvoiceGen.
Read guide →How to Add Tax and VAT to Invoices
Learn how to enable tax, set VAT rates, and handle multiple tax configurations on your invoices using InvoiceGen.
Read guide →How to Add Your Company Logo to Invoices
Upload your company logo to create branded invoices. Supported formats, sizing tips, and troubleshooting for logo display on InvoiceGen.
Read guide →How to Save and Manage Your Invoices
Learn how InvoiceGen saves your work automatically in the browser, how to export PDFs, and how to organize your invoice history.
Read guide →How to Email an Invoice to Your Client
Best practices for emailing invoices to clients, including what to write in the email body, subject line tips, and follow-up advice.
Read guide →How to Create Invoices in Different Currencies
Create invoices in over 160 currencies with InvoiceGen. Learn how to select currencies, display symbols, and invoice international clients.
Read guide →How to Add Discounts and Shipping to Invoices
Add percentage or flat discounts and shipping charges to your invoices. See how InvoiceGen recalculates totals automatically.
Read guide →How to Handle Recurring Invoices
Learn how to create and manage recurring invoices for retainer clients, subscriptions, and ongoing services using InvoiceGen.
Read guide →How to Customize Invoice Labels and Fields
Rename fields, change document types, add reference numbers, and customize notes and terms on your InvoiceGen invoices.
Read guide →Troubleshooting Common Invoice Issues
Fix common problems with PDF downloads, logo display, calculation errors, and page loading on InvoiceGen.
Read guide →Privacy and Security: How Your Data Is Protected
Learn how InvoiceGen protects your business data with local-first architecture, minimal data collection, and optional encrypted cloud sync.
Read guide →How to Create Invoices on Your Phone
Create professional invoices from your phone or tablet. Tips for mobile invoicing, saving PDFs, and adding logos on small screens.
Read guide →Learn More About Invoicing
Free Invoice Generator
Create and download professional PDF invoices in seconds — no sign-up required.
Invoice Tools & Calculators
Every free generator and calculator in one place, from receipts to payment terms.
Invoice & Billing Blog
Guides, tips, and best practices for invoicing, billing, and getting paid on time.
Payment Terms Calculator
Calculate invoice due dates based on common payment terms like Net 30.