The industry’s leading provider of software and service to trust and estate administrators since 1976 … because experience matters!

Why use our fiduciary software?

  • Used by 77% of top 200 law firms and 46% of top 100 accounting firms
  • Clients in all 50 states
  • Over 3,000 clients and over 10,000 users
  • Award-winning Estate Planner module

Why use our Preparation Services?

  • We prepare tens of thousands of trust/estate accountings and fiduciary tax returns annually
  • All work is completed in the U.S. by our staff of dedicated accountants/tax preparers
  • Over 35 years of serving our clients
  • Trust accounting, estate accounting, 706, 1041, 709, 990

Enter your contact information

  • Receive demo download of our software!
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  • Be kept informed about trust and estate product releases!
  • Participate in a drawing* of free ONESOURCE Trust & Estate  Administration software!
  • Two lucky winners will also receive* a $100 Visa gift card! DRAWING IS CLOSED AS OF 11/30/2012.

    DRAWING IS NOW CLOSED. CONGRATULATIONS TO OUR WINNERS!

  • Kaushal in CT!
  • Nancy in NJ!


  • Check your email for login information to download your demo software from ONESOURCE Trust & Estate Administration.  Add ONESOURCESales.TrustEstate@ThomsonReuters.com to your address book to make sure our emails go directly to your inbox.


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