The IRS was not supposed to be temporary. The confusion traces back to the very first federal income tax, passed in 1861 to pay for the Civil War and repealed in 1872. But that early tax and the modern agency are not the same story. The IRS as it exists today grew out of the 16th Amendment, ratified in 1913, which gave Congress permanent constitutional authority to tax income. Neither that amendment nor the Internal Revenue Code contains an expiration date.
The Civil War Tax Was Temporary. The Modern One Isn’t.
Congress passed the Revenue Act of 1861 during a special session called to finance the Union war effort, imposing a 3 percent tax on individual incomes over $800.1U.S. Senate. Featured Document: The Revenue Act of 1861 The 1861 law had no real enforcement mechanism, so Congress replaced it with the Revenue Act of 1862, which created the office of Commissioner of Internal Revenue and introduced graduated rates: 3 percent on income between $600 and $10,000, and 5 percent above that.2Internal Revenue Service. Historical Highlights of the IRS
Once the war ended, public support collapsed. Congress cut the rates in 1867 and repealed the income tax entirely in 1872.2Internal Revenue Service. Historical Highlights of the IRS For the next four decades, roughly 90 percent of federal revenue came from taxes on liquor, beer, wine, and tobacco. That first income tax really was a wartime measure, and it really did go away.
This is the fact that fuels the “temporary IRS” claim. It’s true about 1861. It is not true about what came later.
Why the 1913 Income Tax Was Built to Last
An 1894 attempt to bring the income tax back was struck down by the Supreme Court in Pollock v. Farmers’ Loan & Trust Co., which held that taxing income from property was a “direct tax” the Constitution required to be apportioned among the states by population.3Justia Law. Pollock v. Farmers Loan and Trust Co., 157 U.S. 429 (1895) After Pollock, no broad income tax could survive without a constitutional change.
That change came with the 16th Amendment, proposed by Congress in 1909 and ratified on February 3, 1913, when 36 of 48 states approved it.4National Archives. 16th Amendment to the U.S. Constitution: Federal Income Tax (1913) Its text is short: “The Congress shall have power to lay and collect taxes on incomes, from whatever source derived, without apportionment among the several States, and without regard to any census or enumeration.”5GovInfo. Constitution of the United States – Amendment XVI
Congress moved quickly. The Revenue Act of 1913, signed October 3, set up the income tax system whose basic shape is still in place today. It introduced the first Form 1040, titled “Return of Annual Net Income of Individuals.”6Internal Revenue Service. Form 1040 – Income Tax (1913)
Here is what separates 1913 from 1861: the new law was not tied to any war or emergency, and it contained no sunset clause. Tax legislation without an expiration date stays in force until Congress votes to change it. The core obligation to file and pay income tax has been continuously in effect since 1913. Some individual provisions carry expiration dates and are periodically renewed as “extenders,” but the income tax itself has no built-in off switch.
What Keeps the IRS in Place Legally
The IRS is not a temporary contractor. It exists because federal law requires someone to administer the tax code, and the statute names it.
The 16th Amendment supplies Congress’s authority. Congress uses that authority through the Internal Revenue Code, which is Title 26 of the U.S. Code and covers income, payroll, estate, gift, and excise taxes.7Cornell Law School. Internal Revenue Code (IRC) Section 7801 places administration and enforcement of the tax laws under the Secretary of the Treasury.8Office of the Law Revision Counsel. 26 U.S.C. 7801 – Authority of Department of the Treasury Section 7803 creates the Commissioner of Internal Revenue, appointed by the President and confirmed by the Senate, to run the agency.9Office of the Law Revision Counsel. 26 U.S. Code 7803 – Commissioner of Internal Revenue
The Bureau of Internal Revenue itself dates back to 1862, and it was renamed the Internal Revenue Service in 1953 under a Truman-era reorganization plan that Eisenhower implemented, replacing political appointees with career civil servants.2Internal Revenue Service. Historical Highlights of the IRS The obligation to file is set in statute. Sections 6011 and 6012 of the Internal Revenue Code require it. As long as the IRC exists, some federal agency must carry it out. Right now, that agency is the IRS.
The scale of the work also argues against temporariness. Federal revenues for fiscal year 2026 are projected at $5.6 trillion.10Congressional Budget Office. The Budget and Economic Outlook: 2026 to 2036 Collecting that from hundreds of millions of individual and business returns needs a permanent, specialized workforce.
The “Voluntary” Confusion
Another root of the temporary-IRS idea is the phrase “voluntary compliance.” IRS publications use it, and tax protesters have long argued the word means paying is optional. It doesn’t.
“Voluntary” refers to self-assessment: taxpayers calculate their own tax and file their own returns, rather than the government computing everyone’s bill. The IRS explicitly explains that the word describes the method of collection, not whether payment is required.11Internal Revenue Service. Anti-Tax Law Evasion Schemes – Law and Arguments (Section I) In United States v. Tedder (10th Circuit, 1986), the court stated that while voluntary compliance is the general collection method, Congress gave the Treasury Secretary full power to enforce the tax laws involuntarily when taxpayers do not comply.
Federal courts have also rejected every challenge to the validity of the 16th Amendment, including claims about spelling and capitalization discrepancies in state ratification documents. Filing a return that argues the income tax is unconstitutional or that the IRS has no authority to collect triggers an automatic $5,000 penalty under Section 6702, on top of any tax and interest owed.12Office of the Law Revision Counsel. 26 U.S.C. 6702 – Frivolous Tax Submissions
Could Congress End the IRS Now?
In principle, yes. The IRS is a creature of statute, not the Constitution. Congress created it and Congress could dismantle it. What Congress cannot easily do is eliminate the need for federal tax collection.
The most visible abolition proposal is the FairTax Act, reintroduced as H.R. 25 in the 119th Congress. The bill would repeal federal income, payroll, estate, and gift taxes, replace them with a national sales tax, and shut down the IRS, transferring administration to a new “Sales Tax Bureau” within Treasury.13Congress.gov. Text – H.R. 25 – 119th Congress (2025-2026): FairTax Act of 2025 It was referred to the Ways and Means Committee in January 2025 and has not advanced to a vote.
Even the FairTax Act tacitly concedes how durable the current system is. It contains a self-destruct clause: if the 16th Amendment is not repealed within seven years of enactment, the entire FairTax law expires and the income tax returns automatically. Its own sponsors recognize that without a constitutional amendment stripping Congress of the power to tax income, a later Congress could simply reverse any replacement.
Budget fights are a separate matter. The Inflation Reduction Act of 2022 provided roughly $80 billion in long-term IRS funding for enforcement and modernization. The fiscal year 2026 budget request rescinds $16.5 billion of that unobligated funding and cuts annual appropriations to $9.8 billion, a 20 percent decrease from the 2025 level.14U.S. Department of the Treasury. Internal Revenue Service FY2026 Program Summary by Budget Activity Shrinking the IRS is not the same as abolishing it. So long as the 16th Amendment stands and the Internal Revenue Code remains law, some federal agency has to collect the taxes those provisions require.