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Makes wide-ranging changes to how partnerships and partner-level tax items are taxed, reported, and adjusted. It tightens rules on how partnership liabilities are allocated, limits when and which partnerships get basis adjustments on partner transfers and distributions, requires more uniform allocation methods and revaluation rules, expands anti‑abuse authority to recast transactions, and narrows several nonrecognition rules for transfers into corporations or partnerships. It also broadens the net investment income tax to capture certain high‑income business income and changes timing rules for worthless or abandoned assets. The bill phases in some tax increases, adds reporting and disclosure duties for partnerships, creates an option to pay certain transition tax liabilities in installments, and directs Treasury to write many regulations and guidance documents. Most changes apply to partnership taxable years or partnership transactions occurring after the date of enactment.
The bill delivers broad clarification and anti‑abuse tightening of partnership tax rules and targeted relief for some taxpayers, but it shifts and accelerates tax burdens for many partners while substantially increasing compliance, reporting, and administrative costs.
Partnerships and their partners (small-business owners, taxpayers, financial institutions) get much clearer, more standardized partnership tax rules and definitions that reduce disputes, uncertainty, and inconsistent treatment.
Partners (especially small-business owners and passthrough owners) can reduce immediate cash burdens and improve tax timing: certain inventory distributions can be treated as sales/exchanges (capital treatment), some resulting tax liabilities may be spread over six years, and worthless partnership interests or identifiable abandonment events can produce earlier loss recognition.
The bill strengthens anti‑abuse measures and prevents unintended nonrecognition shelters by giving Treasury explicit authority and clearer rules to address partnership tax sheltering and mismatches, supporting fairer enforcement.
Many partners (small-business owners, middle‑class taxpayers, buyers and sellers) could face higher or accelerated tax liabilities because of recharacterizations, narrower nonrecognition, liability reallocations, remedial allocation rules, and the NIIT expansion.
Partnerships, their partners, and financial institutions will incur substantial new compliance, reporting, recordkeeping, election and calculation costs (and increased need for professional tax advice) as they implement new allocations, reporting rules, elections, and Treasury guidance.
Installment‑acceleration and timing changes (e.g., on bankruptcy, sale, or business cessation) can create sudden large tax demands that harm sellers, buyers, and insolvent entities by creating liquidity stress.
Introduced June 17, 2025 by Ronald Lee Wyden · Last progress June 17, 2025