Sri Lanka Invoice Generator

Automated Invoice Number Generation Extension Compliant with Sri Lanka Tax Department Guidelines

About This Application

This application automatically generates invoice numbers according to the Sri Lanka Tax Department Guidelines. The system ensures compliance with the latest regulations for invoice formatting and tracking.

Key Features

  • Automatic invoice number generation based on Sri Lankan tax regulations
  • Sequential numbering that resets monthly
  • Smart detection of last transaction to continue sequence
  • Compliance with Sri Lanka Tax Department formatting standards

Invoice Number Format

Format:

YYMMM_VISCO_XXXX

Example:

26FEB_VISCO_0001

YY

Last 2 digits of year

26 for 2026

MMM

3-letter month

JAN, FEB, MAR

_VISCO_

Company ID

Constant value

XXXX

Sequential #

Resets to 0001

How It Works

The system automatically checks your last invoice number and generates the next number in sequence. When a new month begins, the sequence counter automatically resets to 0001, ensuring compliance with Sri Lankan tax regulations.