Convert TT14 to TT18

Understanding tt14 and tt18 file formats

TT14 and TT18 are proprietary file formats used by the German tax software ELSTER (Elektronische Steuererklärung) for storing tax return data. The number in the extension (14 or 18) typically refers to the tax year (2014 or 2018) for which the file was created. These files contain structured tax information, including personal data, income, deductions, and other relevant details required for electronic tax submission in Germany.

Why convert tt14 to tt18?

Converting a TT14 file to a TT18 file allows users to migrate their tax data from the 2014 tax year format to the 2018 format. This is useful if you want to reuse or update your previous tax return data for a new tax year, saving time and reducing manual data entry.

How to convert tt14 to tt18

There is no universal file converter for TT14 to TT18 because these are specialized formats. The best way to perform this conversion is by using the ELSTER software itself, specifically the ElsterFormular application, which supports importing previous years' tax data and exporting it in the new format.

Step-by-step conversion using ElsterFormular

1. Download and install ElsterFormular from the official ELSTER website.
2. Open ElsterFormular and select Datei → Öffnen to open your TT14 file.
3. Review and update your tax data as needed for the 2018 tax year.
4. Once updated, go to Datei → Speichern unter and choose the TT18 format to save your file.

Recommended software for tt14 to tt18 conversion

The most reliable and secure method is using ElsterFormular, as it is the official software for German tax returns and supports backward compatibility for importing older tax files and exporting them in newer formats.

Important notes

• Always use the latest version of ElsterFormular for best compatibility.
• Back up your original TT14 file before conversion.
• Manual review of imported data is recommended to ensure accuracy for the new tax year.