Open File Explorer and browse to the company directory noted in step 2.
Right-click TAXTABLE.DAT and select Rename.
Rename the file to OLDTAXTABLE.DAT.
Find a backup file (.PTB) created before the error occurring.
Right-click and Copy the file. Then go to the Desktop.
Right-click a blank area of the Desktop and select Paste.
Right-click the backup file and select Rename. Change the PTB extension to ZIP.
Right-click the .ZIP file and choose Extract All.
Open the extracted folder, right-click TAXTABLE.DAT, and select Copy.
Open File Explorer and browse to the individual company directory.
Right-click and Paste.
Open Sage 50.
Verify that User-Maintained Payroll Formulas can open without error and that payroll calculates.
If the backup that contains the good TAXTABLE.DAT is old, then any missing User-Maintained formulas may need to be recreated manually. Follow How to update User-Maintained formulas for further details.
Recreate the file when there isn’t a valid backup
NOTE:
You'll need to recreate User-Maintained formulas when using this method.