What Is 31 USC

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Last updated: April 15, 2026

Quick Answer: 31 USC is the United States Code Title 31, which governs federal money and finance, including coinage, budget procedures, and public debt. It was enacted in 1982 as part of a broader revision of federal financial law.

Key Facts

31 USC was enacted on July 1, 1982, replacing earlier financial statutes
Title 31 contains over 1,500 sections divided into eight divisions
Section 31 U.S.C. § 321 authorizes the U.S. Mint to produce coins
The Treasury Department enforces most provisions under 31 USC
31 U.S.C. § 5311 establishes the Bank Secrecy Act reporting requirements

Overview

31 USC, or Title 31 of the United States Code, is the primary legal framework governing federal financial operations in the United States. It outlines how the government manages money, from budgeting and appropriations to debt issuance and financial reporting.

The title covers all aspects of fiscal policy execution, including revenue collection, expenditure controls, and accountability mechanisms. It applies to federal agencies, the Treasury Department, and any entity handling public funds.

Coinage authority: Under 31 U.S.C. § 321, the U.S. Mint is authorized to produce coins in denominations up to $100, ensuring legal tender for transactions.
Budget enforcement:31 U.S.C. § 151 requires federal agencies to maintain accounts showing actual expenditures versus appropriations, preventing overspending.
Debt management: The Treasury must report daily on the public debt under 31 U.S.C. § 3101, including limits and borrowing authority.
Government accountability:31 U.S.C. § 3512 mandates that agencies submit financial statements annually for audit by the GAO.
Anti-fraud provisions:31 U.S.C. § 3729 under the False Claims Act allows the government to pursue penalties for fraud against federal programs.

How It Works

31 USC establishes legal procedures for managing federal finances, ensuring transparency and compliance across government operations. Each section assigns responsibilities to agencies, sets reporting standards, and defines penalties for violations.

Appropriations Tracking:31 U.S.C. § 1301 requires agencies to use funds only for purposes authorized by Congress, preventing misuse of taxpayer dollars.
Impoundment Control:31 U.S.C. § 1511 prohibits the President from withholding congressionally approved funds, reinforcing legislative authority over spending.
Debt Ceiling Compliance: When the debt limit is reached, 31 U.S.C. § 3101 forces Treasury to suspend reinvestment in certain funds to stay under cap.
Financial Audits:31 U.S.C. § 3521 mandates that the Treasury Secretary submit audited financial reports to Congress each year.
Whistleblower Incentives:31 U.S.C. § 3730 allows private citizens to file fraud lawsuits on behalf of the government and receive a portion of recovered funds.
Electronic Payments:31 U.S.C. § 3332 requires federal payments, such as tax refunds, to be made electronically unless exempted.

Comparison at a Glance

Key sections of 31 USC compared to related legal frameworks:

Section	Function	Enforcement Agency	Penalty or Outcome
31 U.S.C. § 321	Authorizes coin production	U.S. Mint	Up to $10,000 fine for counterfeiting
31 U.S.C. § 1301	Controls fund usage	GAO	Agency reprimand or funding cut
31 U.S.C. § 3101	Manages public debt	Treasury Department	Extraordinary measures during debt ceiling
31 U.S.C. § 3512	Financial reporting	Inspector General	Public audit failure if noncompliant
31 U.S.C. § 3729	Fraud prosecution	Department of Justice	Up to $23,331 per false claim plus treble damages

This table highlights how different sections of 31 USC delegate authority and consequences. While the Treasury handles most financial operations, oversight bodies like the GAO and DOJ ensure compliance, creating a system of checks and balances in federal finance.

Why It Matters

31 USC is foundational to fiscal responsibility and legal accountability in the U.S. government. Without it, federal spending would lack structure, transparency, and enforcement mechanisms, increasing the risk of waste and corruption.

Budget Integrity:31 U.S.C. § 1517 requires agencies to report obligations monthly, improving fiscal oversight and planning accuracy.
Public Trust: Transparent financial reporting under 31 U.S.C. § 3515 helps maintain confidence in government fiscal health.
Anti-Money Laundering:31 U.S.C. § 5311 powers FinCEN to monitor suspicious transactions and combat illicit finance.
Debt Transparency: Daily updates on the national debt are required under 31 U.S.C. § 3103, informing Congress and the public.
Whistleblower Protection:31 U.S.C. § 3730 shields informants from retaliation, encouraging fraud reporting.
Operational Efficiency: Electronic payment mandates under 31 U.S.C. § 3332 reduce processing costs by over $100 million annually.

By codifying financial procedures and accountability, 31 USC ensures that federal monetary systems operate legally and efficiently, protecting both taxpayer interests and national economic stability.