Customize Invoice Numbers (Legacy)

⚠️ This guide is outdated
We recommend using the new and improved feature for customizing invoice numbers:
👉 Customize Invoice Number

Overview

This legacy method allows you to customize invoice numbers by:

• Setting a starting invoice number

• Adding a prefix and suffix

• Creating a custom numbering series

Video Guide

Setup Instructions

1. Settings

• Go to GST Pro → Settings

• Click on General Settings

2. Enable Custom Invoice Numbers

• Scroll to Standards and Formats

• Under Invoice Number Format, select:
  Custom invoice numbers

3. Set Starting Invoice Number

• Enter the First invoice number

• This determines what number your invoices will start from

💡 Example:
If you want April invoices to start from #1, set the starting number accordingly

4. Add Prefix and Suffix (Optional)

You can customize the format further by adding:

• Prefix (e.g., INV-2026-)

• Suffix (optional)

Example format:
INV-2026-0001

• Once finished adding these, click Save on top

Important Notes

• You can use negative values for the starting invoice number

  • This helps align invoice numbers with a specific order

• This method is part of the legacy system and may not support newer features

Recommendation

Use the new invoice customization feature instead for:

• Easier setup

• Better flexibility

• Improved accuracy

👉 Customize Invoice Number

Summary

• Legacy method allows basic customization

• Set starting number + prefix/suffix

• Use negative values if needed

• Prefer the new method for better experience