SectionUpdated April 16, 2026

    FAR 4.904Reporting payment information to the IRS.

    Plain-English Summary

    FAR 4.904 explains how the government handles IRS information reporting for contractor payments. It ties together the tax-law requirements in 26 U.S.C. 6041 and 6041A, the implementing rules in 26 CFR, and the contractor taxpayer identification number (TIN) requirement in 26 U.S.C. 6109. In practical terms, this section tells agencies that certain payments to contractors may have to be reported to the IRS on Form 1099, and it identifies the payment office as the party responsible for sending those reports. It also makes clear that contractors must furnish a TIN when a Form 1099 is required, which supports accurate tax reporting and IRS matching. The section matters because it affects payment processing, vendor setup, tax compliance, and the government’s ability to meet statutory information-reporting obligations.

    Key Rules

    IRS reporting applies to some contractor payments

    Payments made by Government agencies to certain contractors may have to be reported to the IRS on Form 1099. The reporting obligation comes from the Internal Revenue Code and its regulations, not from the FAR itself, so agencies must follow the tax rules to determine when reporting is required.

    Form 1099 is the reporting vehicle

    When the tax rules require reporting, the payment information is submitted to the IRS on Form 1099. The section does not list every reportable payment type; instead, it points users to the applicable tax authorities for the detailed reporting standards.

    Contractors must provide a TIN

    If a Form 1099 is required, the contractor must provide its taxpayer identification number under 26 U.S.C. 6109. This requirement supports correct IRS reporting and helps prevent mismatches, backup withholding issues, or rejected information returns.

    Payment office handles IRS submission

    The payment office is responsible for submitting the required reports to the IRS. In practice, this means the office that processes payments must ensure the information return is prepared and filed in accordance with the applicable tax rules and agency procedures.

    Responsibilities

    Government agency

    Identify when contractor payments are subject to IRS information reporting under the Internal Revenue Code and applicable regulations, and ensure the reporting process is carried out through the proper payment office.

    Payment office

    Prepare and submit the required Form 1099 reports to the IRS for reportable contractor payments, using the correct payment data and following the applicable filing procedures and deadlines.

    Contractor

    Provide a taxpayer identification number when a Form 1099 is required so the agency can complete accurate IRS reporting.

    Practical Implications

    1

    Agencies need vendor records that capture accurate TINs early, usually during registration or award setup, because missing or incorrect TINs can delay reporting and create compliance problems.

    2

    The payment office should coordinate with contracting and finance staff to identify reportable payments correctly; not every contractor payment is reportable, and the tax rules control the determination.

    3

    A common pitfall is assuming the contracting office, rather than the payment office, files the IRS report. FAR 4.904 places the submission responsibility on the payment office.

    4

    Another frequent issue is failing to update contractor information when a business name or TIN changes, which can lead to mismatched Form 1099 data and IRS notices.

    5

    Contractors should understand that providing a TIN is not optional when reporting applies, and agencies should be prepared to request and validate that information before year-end reporting.

    Official Regulatory Text

    26 U.S.C. 6041 and 6041 A, as implemented in 26 CFR, in part, require payors, including Government agencies, to report to the IRS, on Form 1099, payments made to certain contractors. 26 U.S.C. 6109 requires a contractor to provide its TIN if a Form 1099 is required. The payment office is responsible for submitting reports to the IRS.