One Big Beautiful Bill Reshapes US Tax Code: Peterson Foundation Brief

The Peter G. Peterson Foundation published an explainer titled "How Did the One Big Beautiful Bill Act Change Tax Policy?" this week, offering finance leaders a roadmap through the most comprehensive federal tax rewrite since the 2017 Tax Cuts and Jobs Act.

What is the One Big Beautiful Bill Act?

The legislation, signed into law in 2025, runs more than 800 pages and touches nearly every line of the Internal Revenue Code. The Foundation's analysis walks readers through the major pillars: individual income tax rates, business deductions, and estate planning thresholds. For CFO desks still mid-cycle on 2025 forecasting, the legislation sets binding parameters that override prior planning assumptions.

What categories of tax policy does the brief cover?

The Peterson Foundation has long tracked federal revenue flows and published its "Solutions Initiative" budget series. Its OBBBA explainer follows that same line-item discipline. Readers should expect coverage of:

• Individual marginal rates and bracket thresholds
• Pass-through entity treatment and Section 199A-style deductions
• Corporate Alternative Minimum Tax adjustments
• Estate and gift tax exemption levels
• SALT cap configuration for state filers
• New temporary credits and bonus deductions

Why are CFOs prioritizing this analysis now?

Treasury and the IRS will issue guidance through 2025 and into 2026, but the statute itself is operative on filing-year 2025 returns. Tax-directors cannot wait for every revenue procedure. The Foundation's brief serves as the first-pass map: which provisions are permanent, which sunset, and which require elections on the 2025 return.

What remains unanswered for finance leaders?

Three questions sit outside the bill's statutory text and inside the CFO's playbook:

• How does state conformity track the federal changes?
• Which international provisions (FDII, GILTI, BEAT) shift in ways that change transfer-pricing models?
• How do permanent versus temporary provisions change multi-year tax capitalization?

What is the Foundation's analytical track record?

The Peterson Foundation publishes the annual "Fiscal Outlook" and the "Solutions Initiative" papers used by budget staff on Capitol Hill. Its reference to the OBBBA draws on scoring conventions that align with Congressional Budget Office methodology. CFOs treating the brief as authoritative should still cross-check specific provision language against the enrolled bill text before filing position memos.

What is the forward implication for the next 18 months?

Finance teams face a compressed implementation window. The bill's effective dates cluster at the start of tax year 2025, with select provisions retroactive. Quarterly provision calculations, deferred tax re-measurements, and ASC 740 disclosures all require refresh before the next 10-Q cycle closes. Teams that started modeling immediately after enactment hold a measurable lead on those that have not yet opened the brief.

The full Peterson Foundation analysis is available on the organization's site; CFO desks should pair it with their external tax advisor's implementation memo before finalizing year-end tax memoranda.