The Joint Committee on Taxation is a nonpartisan committee of Congress that provides expert analysis on tax legislation. It serves as a technical resource for the House Ways and Means Committee and the Senate Finance Committee, scoring the revenue impact of proposed tax changes.
The JCT's revenue estimates are official — when Congress debates how much a tax bill will cost or save, the JCT's numbers are the authoritative figures used. The committee's staff of economists, attorneys, and accountants analyze every piece of tax legislation, model its economic effects, and help ensure that tax law is drafted correctly. It also investigates tax administration and prepares explanations of enacted tax legislation that become essential references for tax professionals.