The S Corporation Modernization Act of 2025 would make a broad set of changes to federal tax rules governing S corporations. A major feature is a new deduction tied to the built-in gain in S corporation stock received from a decedent, allowing the deduction to be amortized over 15 years and accelerated when certain S corporation assets are sold. The bill also adjusts stock basis rules and distribution rules to coordinate with that new deduction, and it applies special treatment for interests held through partnerships and for transfers involving estates, trusts, gifts, and spouses.
The bill would also relax and revise the passive investment income rules for S corporations by raising the relevant threshold from 25 percent to 60 percent and repealing the current termination event tied to excessive passive income. It expands who may be an S corporation shareholder by allowing nonresident alien individuals and IRAs, creates withholding and reporting rules for nonresident alien shareholders, and treats gains from sales of S corporation stock by nonresident aliens as effectively connected income in certain cases. In addition, it lets employees of a corporation and its wholly owned entities count as a single shareholder for the S corporation shareholder limit, transfers suspended losses at death, and repeals section 409A governing the taxation of nonqualified deferred compensation, while making conforming changes to related tax provisions.
If enacted, the bill would substantially amend the Internal Revenue Code provisions on S corporations, including sections 1361, 1362, 1366, 1367, 1368, 1375, 864, 1447, 409A, and related conforming sections. Its practical effect would be to broaden S corporation eligibility, change how certain income and gains are taxed, and alter withholding, basis, and reporting obligations for corporations, shareholders, estates, trusts, and transferees. It would also create new administrative responsibilities for the Treasury Department to issue regulations and guidance.
The available context suggests the bill is still at an early stage and has not yet generated recorded votes or committee debate. Because there are no transcripts or vote totals, there is no documented public sentiment in the provided materials beyond the bill’s introduction and referral to the Senate Finance Committee. The bill’s title and scope indicate a reform-oriented, pro-business tax modernization approach, but the context does not show whether members have expressed support or opposition.
The main points of potential contention are likely to be the expansion of S corporation ownership to nonresident aliens and IRAs, the repeal of section 409A, and the relaxation of passive income limits, all of which could be viewed as significant departures from current tax policy. The new withholding regime for nonresident alien shareholders and the treatment of gains as effectively connected income may also raise compliance and administrative concerns. More generally, the bill’s broad rewrite of S corporation rules could draw scrutiny from tax policymakers concerned about revenue effects, complexity, and the interaction with existing pass-through entity rules.
The bill would amend multiple provisions of the Internal Revenue Code to modernize S corporation taxation, including adding a new deduction for built-in gain at death, revising basis and distribution rules, expanding eligible shareholders, changing passive income thresholds, and repealing section 409A. It would also create new withholding and reporting obligations for S corporations with nonresident alien shareholders and conform related provisions across the tax code. These changes would affect S corporations, shareholders, estates, trusts, IRAs, employees treated as shareholders, and foreign investors.
No committee transcript or vote record is provided, so there is no direct evidence of support or opposition in the available materials. The bill appears to be introduced as a reform measure aimed at simplifying and expanding S corporation rules, suggesting a generally pro-modernization and pro-business intent. However, the breadth of the changes implies that stakeholders could have mixed views depending on how the bill affects tax liability, eligibility, and compliance burdens.
Likely areas of contention include allowing nonresident aliens to be S corporation shareholders, which is a major policy change and would require new withholding rules; expanding eligibility to IRAs; and repealing section 409A, which would significantly alter deferred compensation taxation. The increase in the passive investment income threshold and repeal of the excessive-passive-income termination rule may also be controversial because they relax existing limits on S corporations. Tax administrators and revenue-focused lawmakers may be concerned about complexity, enforcement, and potential revenue loss, while business and shareholder groups may favor the broader flexibility.