Ease the burden of your income tax compliance
We help you address the ever-changing complexities of U.S. federal, state, local, and international income tax compliance. Our teams reduce the stress on your internal resources while ensuring accuracy, improving quality, and meeting deadlines.

- U.S. federal income tax filings including statements & elections
- State income/franchise tax filings
- Estimated tax calculations and cash management analysis
- U.S. international tax compliance, FATCA and FBAR reporting
- GILTI, FDII, and BEAT calculations and studies
- E&P, FTC, Subpart F, and foreign branch calculations
- Tax accounting methods
- Tax credit opportunities
- U.S. withholding tax compliance
- Tax audit support, including RAR reporting
- State nexus and apportionment studies
Whether you need one person, a small team, or are looking to fully outsource income tax compliance, we help you address today’s most complex federal, international, state, and local tax issues.
We’re well versed in today’s income tax technologies and can leverage either your existing software or utilize our directly-licensed, third-party solutions.
We always communicate clearly, hit deadlines, and properly manage expectations throughout any engagement.
Our well-rounded team of experienced professionals allows us to deploy the right person at the right time, and remain flexible if your needs change.
How we work with you
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Co-sourced
Whether leading or supporting your operational needs, we become an integrated part of your tax function, working side-by-side with your team.
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Outsourced
Our outsourcing model delivers the best people and processes, providing a streamlined, cost-effective solution.
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Project-based
Our project-based solutions offer specialized support in technology, planning, assessment, integration and other key initiatives.
The thing that I think really makes GTM stand out is they come in, understand your facts, and work with you, and they build something tailored to you and your department that you own, and you run with long term.