Numeração de Faturas: Como Configurar uma Sequência

Invoice Numbering: How to Set Up a Sequence (Best Practices)

Why Invoice Numbering Matters

1. Tax compliance — Government auditors expect sequential numbers

2. Accounting accuracy — Accountants need to match numbers to payments

3. Fraud prevention — Gaps suggest hidden invoices

4. Professional appearance — "Invoice #001" looks more professional

5. Easy tracking — Quickly find an invoice by number

Invoice Numbering Formats

Option 1: Simple Sequential ``` 001, 002, 003, 004, 005... ```

Option 2: Date-Based ``` 2025-001 (1st invoice in 2025) 2025-002 (2nd invoice in 2025) ```

Option 3: Prefixed ``` INV-001, INV-002, INV-003 PO-001, PO-002 (for purchase orders) QT-001, QT-002 (for quotations) ```

Option 4: Month-Based ``` 2025-01-001 (January 2025, invoice #1) 2025-02-001 (February 2025, invoice #1) ```

The Golden Rule: Never Skip a Number

This is non-negotiable.

❌ Bad: ``` 001, 002, 003, 005, 006 (You skipped #004) ```

✅ Good: ``` 001, 002, 003, 004, 005, 006 (Sequential, no gaps) ```

Pro Tips

✅ Start at 001 (not 1) — Two-digit looks more professional

✅ Keep historical records — Save all invoices for 7 years (tax requirement)

✅ Document your system — Write down your format in case someone else needs to issue invoices

✅ Automate it — [Use a tool that auto-generates numbers](/create-free-invoice) to eliminate error

[Create invoices with automatic sequential numbering](/create-free-invoice) — never skip a number again.