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DT Professional Suite Software Support
Contact the DT Professional Suite Software Support Department
Support for users of the DT Professional Suite is available through a number of channels.
Support hours
Our support team is available to assist with questions regarding the use of your
DT Professional SuiteÌý²õ´Ç´Ú³Ù·É²¹°ù±ð.
Regular support hours (Outside of Tax Season):
Monday to Friday:Â 9:00 a.m. to 5:00 p.m. EST
Saturday:Ìý°ä±ô´Ç²õ±ð»å
Sunday:Ìý°ä±ô´Ç²õ±ð»å
Tax season support hours:
February 23 to April 30, 2026
Monday to Friday:Â 8:00 a.m. to 8:00 p.m. EST
Saturday:Â 9:00 a.m. to 5:00 p.m. EST
Sunday:Ìý°ä±ô´Ç²õ±ð»å
April 3 and April 6, 2026
Good Friday and Easter Monday
9:00 a.m. to 5:00 p.m. EST
For assistance, contact our support team ²¹³ÙÌý1B´ÎÔª¹ÙÍøÍøÖ·‘800B´ÎÔª¹ÙÍøÍøÖ·‘663B´ÎÔª¹ÙÍøÍøÖ·‘7829.
Contact methods
Email:
Support for the DT Professional Suite
is available at
dt.support@thomsonreuters.com
Support for DT Practice is available at
dt-practice@thomsonreuters.com
Phone:
You can reach our software support team by calling the Thomson Reuters support lines at
514-733-8355Â in Montreal,
or toll free ²¹³ÙÌý1-800-663-7829.
Fax:
Select the Software support option from the Help menu, and click Support request form. Fill out the form, print it and fax it to Thomson Reuters
²¹³ÙÌý1 866 490 2770. A member of the software support team will quickly get back to you.
Useful links
Access our tax calculator or learn more about the Thomson Reuters Educational Program.
Knowledge bases
Your source for update notes on product releases, technical answers, product documentation and more.
Support request form
If you are unable to find the answer to your question in the Knowledge base, send your questions by email through the Support request form, by selecting Software support from the Help menu in the DT Max program.
Select the Support request form through the Help menu.
Fill out the form and click on Submit email.
Technical requirements for the DT Professional Suite
Call us at 1 866 653 8629
for any inquiries about pricing for the DT Professional Suite products, or write us ²¹³ÙÌýDT-sales@thomsonreuters.com