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A true competitive advantage
Law firm Zarin Baum’s embrace of generative AI as the natural next step in the evolution of legal work and their adoption of CoCounsel Legal has helped them achieve remarkable efficiency gains and improved client relationships.
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CoCounsel Legal
Transform your work with the only AI legal solution uniting research, drafting, and document analysis in a single experience. Designed by legal experts and built on trusted content and advanced AI, CoCounsel Legal accelerates multistep work so you can better serve your clients and grow your business.
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CoCounsel Tax
Transform your tax practice with CoCounsel Tax, an AI-powered assistant that combines trustworthy answers, automation, and firm knowledge into one seamless platform. Enhance efficiency, reduce risk, and improve client confidence with CoCounsel Tax.
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CLEAR
Powerful software designed for law enforcement, compliance, risk, and fraud investigators. Conduct thorough investigations with ease using our intuitive online investigation software. Efficiently, prevent, detect, and solve crime.
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2026 SKILLS Showcase
Join weekly sessions to experience in-depth demonstrations of the leading legal AI products while connecting with strategic law firm leaders in knowledge management, innovation, and AI.
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Ghosts on the ledger
Payroll fraud is a major compliance risk. Learn how payroll analytics and AI-powered tools can help exorcise phantom employees and employers.
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Future of professionals report 2025
The Thomson Reuters Future of Professionals Report 2025 reveals how AI continues to shape professional work — and what it takes to get ahead. This year’s report shows that increased efficiency, productivity, and cost savings top the list of benefits professionals attribute to AI, making it indispensable for organizations facing rapid change.
Sign partnership e-file
An authorized partner and the paid preparer must sign an electronic partnership return.
The partnership must designate a principal of the firm responsible for signing the partnership return. The partner must sign and date the Declaration of Taxpayer on either Form 84583-PE or Form 8879-PE.
Tax matters partner
For each signature option, the partner signs and dates the Declaration of Taxpayer before e-filing to authorize IRS submission. In the declaration, the taxpayer states under penalties of perjury the return is true, correct, and complete. The taxpayer also consents to disclosure. This consent lets the IRS share return information and e-file results with the taxpayer's Authorized IRS e-file Providers, including Transmitters and Electronic Return Originators (EROs).
ERO
The ERO must thoroughly read the declaration, then sign and complete the requested information in the Declaration of Electronic Return Originator (ERO) and the Paid Preparer section. An ERO may authorize firm members or designated employees to sign as the ERO. However, the ERO remains responsible for all e-files originated by its firm. EROs don’t have to disclose their EIN or Social Security number on the copies they provide to taxpayers.
Paid preparer
If someone prepares the return for a fee, the paid preparer must also sign the
jurat form
(Form 8453-PE). When the paid preparer is also the ERO, the preparer may select the Also the Paid Preparer
option and skip the Paid Preparer's Use Only
section. Paid preparers don’t have to show their SSNs or EINs on copies they give to taxpayers. This article applies to:
- PRODUCT: ONESOURCE Income Tax
- Return type: 1065 Partnership
- Subject: e-file,Signature, PIN options