---
title: "Clean MT940 Files | Bank Statement Cleanup Tool Switzerland"
description: "Clean and optimize MT940 bank files automatically. Remove errors and duplicates. Free tool for Swiss accountants and businesses."
url: "https://www.yesbusiness.ch/en/mt940-clean/"
lang: "en"
---

# MT940 File Cleaner

Remove SWIFT envelope from your MT940 files to make them compatible with import tools

Extract pure MT940 content by removing SWIFT envelope blocks

## How to use this tool:

1. Select your MT940 file with SWIFT envelope
2. The tool automatically extracts Block 4 content
3. Download the cleaned file
4. Import it into your accounting software

## What does MT940 cleaning do?

MT940 files are sometimes exported with a complete SWIFT envelope (blocks 1-5) that surrounds the actual transaction data. Many accounting import tools only accept Block 4 content (pure MT940 transactions).

This tool automatically detects the presence of a SWIFT envelope and extracts only the Block 4 content, making your file compatible with standard import tools.