CBO Scores the HEIRS Act of 2025: What the Bill Means for Deficits, Markets, and Estate Planning

The Congressional Budget Office has published its cost estimate for H.R. 1640, the HEIRS Act of 2025, in the version reported by the House Committee on Financial Services on September 1, 2026. The score matters less for its headline number than for what it reveals about how Washington now treats inherited wealth, retirement accounts, and the federal balance sheet.

Key Facts

• The legislation is H.R. 1640, titled the HEIRS Act of 2025.
• CBO analyzed the text as reported by the House Financial Services Committee on September 1, 2026.
• The estimate addresses the bill's effects on federal revenues, direct spending, and the deficit.
• Because the committee-reported version is the scored text, later floor amendments could change the fiscal picture.
• CBO's estimates are static in nature: they project behavioral responses only where the agency judges them well supported.

Analysis

Estate and inheritance rules sit at the intersection of tax policy, saving behavior, and asset markets. When Congress revisits them, the effects ripple well beyond the families directly affected.

First, consider revenue. Inheritance-related provisions are scored against a baseline in which current law continues. Any change that narrows the tax base reduces receipts over the ten-year window and widens the deficit, unless offsets are included. Because the reported version is what CBO scored, the estimate gives markets an early read on the direction of fiscal policy before the bill reaches the floor.

Second, consider behavior. Wealthy households plan years ahead. A credible change to inheritance treatment can shift the timing of gifts, trust structures, and asset sales. CBO's conventions capture some of this, but the true response is uncertain. If the bill makes transfers cheaper, expect more lifetime gifting and potentially more turnover in concentrated equity positions. If it raises costs, expect the opposite.

Third, consider the macro backdrop. The federal deficit is already large relative to GDP, and every new claim on the Treasury competes with existing ones. A bill that adds to deficits without offsets puts upward pressure on issuance and, at the margin, on term premiums. That is a slow-moving force, not a market shock, but it compounds.

Finally, consider distribution. Inheritance policy is where tax and social policy meet. Supporters argue that reducing transfer taxes protects family businesses and preserves capital formation. Critics argue that it entrenches advantage and forgoes revenue that could fund other priorities. CBO does not adjudicate that debate; it prices the arithmetic.

Implications

For investors, the practical takeaways are modest but real. Estate-planning provisions can influence the supply of shares coming to market as older owners adjust structures. Life insurance and trust products may see demand shifts. Municipal and Treasury markets could feel incremental pressure if deficits widen.

For policymakers, the score is a constraint. If the bill is not offset, it becomes part of the deficit conversation. If it is offset, the offsets themselves become the story.

For households, the lesson is timing. Rules change, and planning that assumes today's law persists indefinitely is fragile. Diversification across accounts and jurisdictions, and periodic review with counsel, remain sensible.

FAQ

What is the HEIRS Act of 2025?

It is H.R. 1640, a bill referred to the House Financial Services Committee. CBO scored the version reported by the committee on September 1, 2026.

Why does a CBO score matter to markets?

It quantifies the revenue and deficit effects of proposed law, giving investors an early signal about fiscal direction and the likely supply of government debt.

Does the estimate predict behavior?

Only partially. CBO incorporates behavioral responses where evidence is strong, but estate planning is complex and the realized effects may differ.