What Is a Reconciliation Package and How Does It Work?

A reconciliation package is a federal budget bill that Congress can pass with a simple majority in the Senate — 51 votes instead of the 60 usually needed to overcome a filibuster — under a fast-track process created by the Congressional Budget Act of 1974. The tradeoff for that lower vote threshold is a tight limit on what the bill can contain: only changes to federal spending, tax revenue, or the debt ceiling. That single procedural advantage is why reconciliation has carried some of the biggest fiscal laws of the past two decades, including the 2017 Tax Cuts and Jobs Act, the 2021 American Rescue Plan, the 2022 Inflation Reduction Act, and the One Big Beautiful Bill Act signed on July 4, 2025.¹

What Reconciliation Can and Cannot Cover

Reconciliation is a budget tool, not a general legislative shortcut. Every provision in the bill has to move the dials on federal spending or revenue, and the Senate enforces that limit through a rule formally codified at 2 U.S.C. § 644 and named after its principal author, Senator Robert C. Byrd.²

The Byrd Rule lays out six tests for identifying “extraneous” material that has to be stripped from the bill. A provision gets flagged if it:

Produces no change in federal spending or revenue at all
Increases spending or cuts revenue when the committee’s overall package fails to meet its assigned target
Falls outside the jurisdiction of the committee that submitted it
Has a budget effect that is merely incidental to what is really a regulatory or policy change
Would increase the deficit in years beyond the budget window without offsetting savings elsewhere in that committee’s title
Touches the Old-Age, Survivors, and Disability Insurance program — Social Security

The Social Security carve-out is worth flagging on its own. A separate provision, 2 U.S.C. § 641(g), makes it out of order in both the House and the Senate to consider any reconciliation bill containing recommendations affecting Social Security’s core retirement and disability programs.³ The Byrd Rule incorporates that prohibition by reference.⁴ If you are wondering whether reconciliation can be used to overhaul Social Security benefits or taxes, the answer is no.

Enforcement runs through the Senate Parliamentarian, who reviews the text line by line in an exercise informally called a “Byrd bath.” Any Senator can raise a point of order on the floor against a provision the Parliamentarian has flagged, and overriding that point of order takes 60 votes — the same supermajority that reconciliation was designed to avoid.² In a closely divided Senate, provisions found extraneous almost always get stripped. This is where ambitious policy ideas often die, not for lack of majority support but because they fail a procedural test.

The Steps to Passing a Reconciliation Package

Step 1: A Concurrent Budget Resolution

The process starts with both chambers passing a concurrent budget resolution. That resolution is not a law and never goes to the President. It works as Congress’s internal blueprint, and its most important feature is a set of reconciliation instructions telling named committees to draft legislation hitting specific dollar targets over a budget window that usually covers ten years.⁵ If a committee is told to find $50 billion in savings, the bill it produces has to hit that number.

Step 2: Committee Markup

Each committee holds markup sessions to write the actual legislative text — the tax rates, benefit rules, and funding levels that will meet its assigned target. Committees like Ways and Means in the House and Finance in the Senate typically do the heaviest lifting. Once each committee finishes, it submits its product to the Budget Committee in its chamber, which is required by statute to compile the recommendations “without any substantive revision.”³ The Budget Committee cannot rewrite policy choices; it bundles what the other committees sent. The finished product is often an omnibus bill covering dozens of policy areas unified only by a common fiscal target.

Step 3: Floor Debate and the Vote-a-Rama

On the Senate floor, debate is capped at 20 hours.⁶ That hard cap is what defeats the filibuster. When the clock runs out, the bill enters a phase called a vote-a-rama, during which any Senator can offer an unlimited number of amendments. Each amendment gets roughly two minutes of explanation split between the sides, then an immediate vote. Roll calls stack back to back for hours and often run past midnight. Senators use vote-a-rama both to shape the bill and to force politically difficult votes that can turn up in later campaign ads.⁷

When votes on amendments finish, final passage requires only a simple majority: 51 votes, or 50 with the Vice President breaking the tie.

Step 4: Reconciling the Two Versions

The House and Senate rarely pass identical bills. The chambers can appoint a conference committee, exchange amendments until they agree, or have one chamber adopt the other’s text unchanged.⁷ For large packages, conferences are common because the bills tend to span many committees and hundreds of interrelated provisions. Any new material added during conference is itself subject to the Byrd Rule.

Step 5: The President

Once both chambers pass identical text, the bill goes to the President like any other. A signature makes it law. A veto can be overridden only by a two-thirds vote in each chamber, which is why reconciliation packages are typically shaped in advance to secure the President’s support.

Why the Majority Party Uses Reconciliation

The whole point of reconciliation is what it removes: the 60-vote cloture threshold that shapes almost everything else the Senate does. A party that controls the White House and holds even a one-seat Senate majority can enact major tax and spending changes without a single vote from the other side. The cost is the Byrd Rule’s scope limit, which forces the majority to leave regulatory changes, immigration policy that lacks a budget nexus, and any Social Security overhaul out of the package.

Major Laws Passed Through Reconciliation

Reconciliation has carried some of the most consequential fiscal legislation of the past two decades:⁸

Tax Cuts and Jobs Act of 2017, the largest federal tax overhaul in three decades, with many individual provisions set to expire after 2025
American Rescue Plan Act of 2021, a $1.9 trillion pandemic package with stimulus payments, expanded unemployment benefits, aid to state and local governments, and an enhanced child tax credit
Inflation Reduction Act of 2022, which paired energy and climate spending with prescription drug pricing reform for Medicare, extended Affordable Care Act subsidies, and a corporate minimum tax
One Big Beautiful Bill Act of 2025, signed on July 4, 2025, which made the 2017 individual tax rates permanent, raised the child tax credit to $2,200, created new deductions for tip income and overtime pay, and raised the state and local tax deduction cap from $10,000 to $40,000¹

The 2010 Health Care and Education Reconciliation Act, which finalized the Affordable Care Act, is another well-known example. In each case, the expedited timeline and lower vote threshold let the majority party move legislation that would have been blocked or diluted under normal Senate rules.

1
Congress.gov. HR 1 – 119th Congress – An Act to Provide for Reconciliation Pursuant to Title II of H Con Res 14
2
Congressional Research Service. The Budget Reconciliation Process: The Senate’s Byrd Rule
3
Office of the Law Revision Counsel. 2 USC 641 – Reconciliation
4
Office of the Law Revision Counsel. 2 US Code 644 – Extraneous Matter in Reconciliation Legislation
5
Committee for a Responsible Federal Budget. Reconciliation 101
6
Congressional Research Service. The Reconciliation Process: Frequently Asked Questions
7
Congressional Research Service. The Reconciliation Process: Frequently Asked Questions
8
Congressional Research Service. Budget Reconciliation Measures Enacted Into Law Since 1980