Publication 6186-A — Calendar Year Projections for the United States and IRS Campuses

Official source: IRS Forms, Instructions & Publications (https://www.irs.gov/pub/irs-pdf/p6186a.pdf), retrieved 2026-10-03. U.S. Government work (17 U.S.C. § 105).

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Publication 6186 is updated annually to provide U.S.- and campus-level Calendar Year (CY) projections by major tax return categories. It also includes exam class projections for selected return categories. Publication 6186-A serves as a one-sheet companion to Publication 6186, presenting the main takeaways from the publication.

Publication 6186 at a Glance Key Highlights From the 2025 Update

Provides projected tax return volumes

for about

IRS tax forms

• In CY 2024, approximately 82.6% of all tax returns were filed electronically. This share is expected to rise to 83.7% in CY 2025, reaching 90.7% by CY

• Individual income tax returns made up about 60.3% of all returns processed in CY 2024. This percentage is expected to remain consistent in future CYs.

• Approximately 93.3% of individual returns were filed electronically in CY 2024. This percentage is projected to increase to 93.9% in CY 2025, reaching 97.0% by CY 2032.

• The Kansas City campus processed the largest share of returns in CY 2024, accounting for 25.9% of all returns.

• The Cincinnati campus processed the smallest share of returns in CY 2024, accounting for 0.1% of all returns.

Maps the projected tax return volumes to

IRS processing

campuses

Presents projected

tax return categories

exam class volumes for

Projected Tax Return Volumes for the

United States: CY 2025 to CY 2032 Percentage of Tax Returns Processed by

Note: CY 2024 represents actual returns Source: Internal Revenue Service, Statistics of Income Division, 2025 Publication 6186

Source: Internal Revenue Service, Statistics of Income Division, 2025 Publication 6186

of Federal Tax Return Filings

Publication 6186-A (Rev. 12-2025) Catalog Number 71897F Department of the Treasury Internal Revenue Service www.irs.gov/statistics