2020 Tax Update

Tax Update Download and Install Instructions

2020 Tax Update

Step 1

To download, click on 2020 Tax Update at the bottom of this page. We suggest that you download this file to your TEMP folder (c:\Temp).

Step 2

Go to Windows Explorer.

– Right-click on Start.

– Open Windows Explorer.

Open the folder containing the downloaded 2019 Tax Update. Example: c:/TEMP.

Step 3

To extract the files, double-click on 2020 Tax Update.zip. Extract the files into the Temp folder (c:\Temp).

Step 4 Server and Single System Only

– Turn off SQL Server.

– Open the Tax Database folder.

Copy the files contained in the Tax_Database folder ( 2 files – Taxfile.ldf and Taxfile.mdf) into the folder containing the ISS Version 6 Construction Manager databases (example: c:/Program Files/ISS6/Databases).

– Start SQL Server.

Step 5

– Copy isstax.exe and TaxTables.exe  into the ISS6 folder on All machines (example c:/Program Files/ISS6).

2020 Tax Update (updated 01/06/20)    Click to Start Download

Check to see if Update was installed correctly

Double–click on TaxTables.exe.

Select FICA

Employee Base should be:  $137,700.00

Select Cancel