Sign in

You sign in to ONESOURCE platform to access the ONESOURCE Uncertain Tax Positions application. The ONESOURCE platform is a web portal where you access all of your Thomson Reuters applications using a single user name and password. When you purchase ONESOURCE Uncertain Tax Positions, you are issued a ONESOURCE user name and password (if you do not have one already from purchasing another Thomson Reuters application), and given the relevant URL.

To sign in to the ONESOURCE platform, open to the ONESOURCE site.

1. Start Internet Explorer.

2. Go to the ONESOURCE login page using the URL provided to you by Thomson Reuters.

3. Type your Universal ID and Password. The password is case-sensitive.

4. Click Sign in to access the ONESOURCE platform.

ONESOURCE platform - Sign in