The Congressional Budget Office (CBO) has indicated that the taxes linked to President Trump’s “Big Beautiful Bill” may contribute to the deficit after 2034, which is the conclusion of the 2020 budget window. This raises concerns about compliance with the Senate Byrd Rules.
In a letter addressing Sen. Jeff Merkley (D-OR), CBO Director Phillip Swagel noted that “Title VII,” a segment of the finance committee in the bill, is projected to increase the deficit starting in 2034.
Democrats assert that this situation breaches the Senate Byrd Rules, which govern the eligibility of legislation for simple majority votes within the ambit of budget reconciliation.
The Byrd Rules stipulate that measures classified as reconciliation may not elevate the fiscal year deficit beyond the respective budget window addressed by the bill.
The budget window for this significant legislation spans from 2025 to 2034.
Staff for Merkley argued that the Republican proposal fails to adhere to reconciliation rules by surpassing the spending limits specified in the budget resolution, adding trillions to the deficit beyond the ten-year framework.
Swagel, who took office during Trump’s initial term, mentioned that the tax aspects of the proposal would add almost $3.5 trillion to the deficit from 2025 to 2034.
Merkley attempted to mobilize support for a 60-vote threshold to challenge the bill on the Senate floor.
Nonetheless, Senate Majority Leader John Thune (R-SD) and Senate Budget Committee Chairman Lindsey Graham (R-SC) assert that the tax provisions comply with the Byrd Rules.
Thune remarked that Graham possesses the authority to “determine the number of baselines for spending and income” as outlined in section 312 of the Congressional Budget Act.
Graham has decided that the extension of expiration dates for 2017 constitutes a continuation of “current policy” and will, therefore, not contribute to the deficit.
Republicans maintain that they have counterbalanced the costs associated with making corporate tax cuts permanent by identifying over $1.6 trillion in spending reductions, which includes an anticipated $900 billion cut to Medicaid.
The bill narrowly advanced in the Senate late Saturday night, setting the stage for a final vote expected on Monday.





