You can check the version of Sage 50 Accounts data by checking the size of the setup.dta file.

1. Browse and open the relevant Accdata directory.
   
   By default they are:
   
   • v33 - C:\ProgramData\Sage\Accounts\V33\Company.000\ACCDATA
   • v32 - C:\ProgramData\Sage\Accounts\2026\Company.000\ACCDATA
   • v31 - C:\ProgramData\Sage\Accounts\2025\Company.000\ACCDATA
   • v30 - C:\ProgramData\Sage\Accounts\2024\Company.000\ACCDATA
   • v29 - C:\ProgramData\Sage\Accounts\2023\Company.000\ACCDATA
   • v28 - C:\ProgramData\Sage\Accounts\2022\Company.000\ACCDATA
   • v27 - C:\ProgramData\Sage\Accounts\2021\Company.000\ACCDATA
   • v26 - C:\ProgramData\Sage\Accounts\2020\Company.000\ACCDATA
2. Right-click the file setup.dta.
3. Click Properties and check the Size in bytes.
   
   
   
   To determine the version, refer to the relevant file size:
   

    

   Size	Version
   33,108 bytes	v33
   33,098 bytes	v32
   33,078 bytes	v31
   33,501 bytes	v30
   32,606 bytes	v29
   24,654 bytes	v28
   23,618 bytes	v27
   22,836 bytes	v26