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From the creators of the first computerized tax return to the leading provider of corporate tax solutions, Thomson Tax & Accounting revolutionalized the industry, one innovation after another.
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As the leader in corporate income tax solutions, InSource provides the means to run your department more efficiently, reduce risk, and achieve greater accuracy and timeliness – giving you the time and tools necessary for those strategic, value-added activities.

InSource maximizes your investment with leading-edge technology, expert service and support teams, and integrated workflow and data management to meet all of your tax needs.

Our unparalleled combination of experience, best-in-class technology, and commitment to customer service ensures your continued success.

 
 
 
 
 
 
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