FAR 29.204—Federal excise tax on specific foreign contract payments.
Plain-English Summary
FAR 29.204 explains how the Federal excise tax under 26 U.S.C. 5000C applies to certain foreign contract payments and how the government implements that tax through withholding. It covers the role of the acquiring agency in collecting the tax for the IRS, the contracting officer’s limited role, the contractor’s duty to submit IRS Form W-14 with vouchers or invoices, and the default 2 percent withholding when that form is missing. The section also explains which exemptions are handled by the contracting officer at the solicitation stage, which exemptions must be claimed by the offeror on Form W-14, and that any exemption claims are subject to IRS audit. It further clarifies that disputes about the tax itself are tax matters for the IRS, not contract administration issues for the contracting officer, and that the general FAR tax exemptions in 29.201 through 29.302 do not apply here. In practice, this section matters because it determines whether withholding will occur, what documentation must be provided up front, and where contractors must go to resolve tax questions or challenge IRS-related determinations.
Key Rules
IRS Tax, Not Contract Issue
Section 5000C is an IRS tax administered through withholding by acquiring agencies. The contracting officer does not decide substantive tax questions such as whether the tax applies or whether an exemption exists; those issues belong to the IRS.
Withholding on Applicable Payments
Agencies must collect the section 5000C excise tax by withholding from applicable contract payments. The withholding is simply a collection mechanism for the IRS, not a separate agency-imposed charge.
Form W-14 Required With Payment Requests
Contractors subject to the tax must complete IRS Form W-14 and submit it with each voucher or invoice under clause 52.229-12. If the form is not included with the payment request, the default withholding rate is 2 percent for that payment request.
Some Exemptions Are Built Into Solicitation
The exemptions listed in 26 CFR 1.5000C-1(d)(1) through (4) are handled through the prescription at 29.402-3(a). If one of those exceptions applies, the contracting officer will not include the provision that would otherwise trigger the W-14 process for those exemptions.
Other Exemptions Must Be Claimed Up Front
The exemptions in 26 CFR 1.5000C-1(d)(5) through (7) must be claimed by the offeror when submitting the offer, together with IRS Form W-14. If they are not claimed at offer submission, they will not be applied to the contract.
Self-Certification Is Subject to IRS Review
Any exemption claimed on Form W-14 is self-certified and may be audited by the IRS. If there is a dispute over whether the tax applies or was properly collected, the IRS—not the contracting officer—adjudicates the matter.
General FAR Tax Exemptions Do Not Apply
The exemptions in FAR 29.201 through 29.302 do not apply to the section 5000C excise tax. Contractors and contracting officers must use the specific rules in this section and the IRS regulations instead.
Responsibilities
Contracting Officer
Apply the FAR prescription at 29.402-3 when deciding whether to include the relevant provision; ensure withholding procedures are followed; refer substantive tax questions and disputes to the IRS; and recognize that general FAR tax exemptions in 29.201 through 29.302 do not govern section 5000C.
Acquiring Agency
Withhold the section 5000C tax from applicable contract payments and remit it as required by the IRS framework. The agency acts as the collection point and does not resolve tax liability questions.
Contractor
Determine whether it is subject to the section 5000C tax; complete IRS Form W-14 when required; submit the form with each voucher or invoice; and understand that failure to provide the form can trigger default 2 percent withholding on that payment request.
Offeror
Claim any exemptions under 26 CFR 1.5000C-1(d)(5) through (7) at the time of offer submission and include IRS Form W-14 with the offer. If the exemption is not claimed then, it will not be applied later to the contract.
IRS
Interpret and enforce the underlying section 5000C tax rules, including applicability, exemptions, audits of self-certified claims, and disputes over imposition or collection.
Practical Implications
Contractors should treat Form W-14 as a payment-critical document; missing it can cause automatic 2 percent withholding even if the contractor believes an exemption applies.
Offer-stage compliance matters because some exemptions must be claimed with the offer, not later during invoicing or performance.
Contracting officers should avoid trying to resolve tax-law questions themselves and instead direct parties to IRS guidance when the issue is substantive tax applicability or exemption.
The section creates a common pitfall where contractors assume general FAR tax exemptions apply; they do not, so the specific IRS/FAR 29.204 rules control.
Because exemption claims are self-certified and auditable, contractors should keep strong supporting records for any claimed exemption in case the IRS reviews the claim.
Official Regulatory Text
(a) Title 26 U.S.C. 5000C and its implementing regulations at 26 CFR 1.5000C-1 through 1.5000C-7 require acquiring agencies to collect this excise tax via withholding on applicable contract payments (see 29.402-3 , 31.205-41(b)(8)). Agencies merely withhold the tax (section 5000C tax) for the Internal Revenue Service (IRS). All substantive issues regarding the underlying section 5000C tax, e.g., the imposition of, and exemption from the tax, are matters under the jurisdiction of the IRS. The contracting officer will refer all questions relating to the interpretation of the IRS regulations to https://www.irs.gov/help/tax-law-questions . (b) In accordance with the clause 52.229-12 , Tax on Certain Foreign Procurements, contractors that are subject to the section 5000C tax will complete IRS Form W-14, Certificate of Foreign Contracting Party Receiving Federal Procurement Payments, and submit this form with each voucher or invoice. In the absence of a completed IRS Form W-14 accompanying a payment request, the default withholding percentage is 2 percent for the section 5000C withholding for that payment request. Information about IRS Form W-14 is available via the internet at www.irs.gov/w14 . (c) (1) Exemptions from the withholding in the IRS regulations at 26 CFR 1.5000C-1(d)(1) through (4) are captured under the provision prescription at 29.402-3 (a) (i.e ., the contracting officer will not include the provision when one of the 29.402-3 (a) exceptions applies). (2) The exemptions at 26 CFR 1.5000C-1(d)(5) through (7) must be claimed by the offeror when it submits an IRS Form W-14 with the offer. If not submitted with the offer, exemptions will not be applied to the contract. (3) Any exemption claimed and self-certified on the IRS Form W-14 is subject to audit by the IRS. Any disputes regarding the imposition and collection of the section 5000C tax are adjudicated by the IRS as the section 5000C tax is a tax matter, not a contract issue. (d) The exemptions in 29.201 through 29.302 do not apply to this section 5000C tax. (e) Additional information about this excise tax on specific foreign contract payments is available via the internet at https://www.irs.gov/government-entities/excise-tax-on-specified-federal-foreign-procurement-payments .