The software licensed by the IRS for Global Interest Netting
For over twenty years, Decision Modeling, Inc. has been the premier provider of software relating to tax and interest recovery as well as ASC 740-10 (FIN 48) compliance and related services. Our clients include Fortune 500 companies, Big Four accounting, federal government agencies, law firms, as well as individuals and small corporations. DMI’s intuitive software solutions provide value through efficient automation in today’s complex tax environment.
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InterestNet Pro

Our flagship tax interest calculator designed to perform federal IRS and state interest and penalty calculations.

Tax and Interest Software

FIN 48 Software

FIN 48 software for managing your uncertain tax positions and calculating interest on federal, state and foreign taxes.

Interest and Penalty Software

DMI's interest and penalty software is a single product solution for federal and state interest computations, including global interest netting.


FIN 48 Implementation Services

Conversion of FIN 48 and reserve UTP data for use with DMI48 software.


Research links to relevant topic information including Schedule UTP.

Video Demo


DMI48 Software Demo

UTP/FIN48 compliance and related interest computation software demonstration.
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InterestNet Software Demo

Interest and penalty computation software demonstration.
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Interest for FIN 48

Learn why interest matters for FIN 48.
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