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    Home/FAR Navigator/31/31.2/31.205/31.205-4

    FAR Navigator

    • 1Federal Acquisition Regulations System
    • 2Definitions of Words and Terms
    • 3Improper Business Practices and Personal Conflicts of Interest
    • 4Administrative and Information Matters
    • 5Publicizing Contract Actions
    • 6Competition Requirements
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    • 9Contractor Qualifications
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    • 11Describing Agency Needs
    • 12Acquisition of Commercial Products and Commercial Services
    • 13Simplified Acquisition Procedures
    • 14Sealed Bidding
    • 15Contracting by Negotiation
    • 16Types of Contracts
    • 17Special Contracting Methods
    • 18Emergency Acquisitions
    • 19Small Business Programs
    • 22Application of Labor Laws to Government Acquisitions
    • 23Environment, Energy and Water Efficiency, Renewable Energy Technologies, Occupational Safety, and Drug-Free Workplace
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    • 25Foreign Acquisition
    • 26Other Socioeconomic Programs
    • 27Patents, Data, and Copyrights
    • 28Bonds and Insurance
    • 29Taxes
    • 30Cost Accounting Standards Administration
    • 31Contract Cost Principles and Procedures
      • 31.000Scope of part.
      • 31.001Definitions.
      • 31.1Subpart 31.1
      • 31.002Availability of accounting guide.
      • 31.2Subpart 31.2
        • 31.201General.
        • 31.202Direct costs.
        • 31.203Indirect costs.
        • 31.204Application of principles and procedures.
        • 31.205Selected costs.
          • 31.205-1Public relations and advertising costs.
          • 31.205-2[Reserved]
          • 31.205-3Bad debts.
          • 31.205-4Bonding costs.
          • 31.205-5[Reserved]
          • 31.205-6Compensation for personal services.
          • 31.205-7Contingencies.
          • 31.205-8Contributions or donations.
          • 31.205-9[Reserved]
          • 31.205-10Cost of money.
          • 31.205-11Depreciation.
          • 31.205-12Economic planning costs.
          • 31.205-13Employee morale, health, welfare, food service, and dormitory costs and credits.
          • 31.205-14Entertainment costs.
          • 31.205-15Fines, penalties, and mischarging costs.
          • 31.205-16Gains and losses on disposition or impairment of depreciable property or other capital assets.
          • 31.205-17Idle facilities and idle capacity costs.
          • 31.205-18Independent research and development and bid and proposal costs.
          • 31.205-19Insurance and indemnification.
          • 31.205-20Interest and other financial costs.
          • 31.205-21Labor relations costs.
          • 31.205-22Lobbying and political activity costs.
          • 31.205-23Losses on other contracts.
          • 31.205-24[Reserved]
          • 31.205-25Manufacturing and production engineering costs.
          • 31.205-26Material costs.
          • 31.205-27Organization costs.
          • 31.205-28Other business expenses.
          • 31.205-29Plant protection costs.
          • 31.205-30Patent costs.
          • 31.205-31Plant reconversion costs.
          • 31.205-32Precontract costs.
          • 31.205-33Professional and consultant service costs.
          • 31.205-34Recruitment costs.
          • 31.205-35Relocation costs.
          • 31.205-36Rental costs.
          • 31.205-37Royalties and other costs for use of patents.
          • 31.205-38Selling costs.
          • 31.205-39Service and warranty costs.
          • 31.205-40Special tooling and special test equipment costs.
          • 31.205-41Taxes.
          • 31.205-42Termination costs.
          • 31.205-43Trade, business, technical and professional activity costs.
          • 31.205-44Training and education costs.
          • 31.205-45[Reserved]
          • 31.205-46Travel costs.
          • 31.205-47Costs related to legal and other proceedings.
          • 31.205-48Research and development costs.
          • 31.205-49Goodwill.
          • 31.205-50[Reserved]
          • 31.205-51Costs of alcoholic beverages.
          • 31.205-52Asset valuations resulting from business combinations.
      • 31.3Subpart 31.3
      • 31.6Subpart 31.6
      • 31.7Subpart 31.7
    • 32Contract Financing
    • 33Protests, Disputes, and Appeals
    • 34Major System Acquisition
    • 35Research and Development Contracting
    • 36Construction and Architect-Engineer Contracts
    • 37Service Contracting
    • 38Federal Supply Schedule Contracting
    • 39Acquisition of Information Technology
    • 40Reserved
    • 41Acquisition of Utility Services
    • 42Contract Administration and Audit Services
    • 43Contract Modifications
    • 44Subcontracting Policies and Procedures
    • 45Government Property
    • 46Quality Assurance
    • 47Transportation
    • 48Value Engineering
    • 49Termination of Contracts
    • 50Extraordinary Contractual Actions and the Safety Act
    • 51Use of Government Sources by Contractors
    • 52Solicitation Provisions and Contract Clauses
    • 53Forms
    Up to 31.205
    subsectionUpdated April 16, 2026

    FAR 31.205-4—Bonding costs.

    Plain-English Summary

    FAR 31.205-4 addresses when bonding costs are allowable as contract costs under the cost principles. It explains what bonding costs are, including bid, performance, payment, advance payment, infringement, and fidelity bonds, and distinguishes between bonds required by the Government under a contract and bonds a contractor obtains as part of its general business operations. The section exists to tell contractors and contracting officers which bonding expenses may be charged to Government contracts and under what conditions, so that only reasonable, properly supported costs are reimbursed. In practice, this means the allowability of a bonding cost depends first on whether the bond is contract-required or business-practice-required, and then on whether the cost is reasonable and consistent with sound business practice. The rule helps prevent improper charging of general business insurance-type expenses while still allowing legitimate protection costs tied to contract performance or normal commercial operations.

    Key Rules

    Bonding costs defined

    Bonding costs are expenses incurred to obtain assurance against financial loss to the Government or others caused by the contractor’s act or default, or to protect the contractor in similar circumstances. The section specifically includes bid, performance, payment, advance payment, infringement, and fidelity bonds.

    Contract-required bonds are allowable

    If the contract requires bonding, the associated cost is allowable. This covers bonds that are expressly required by the contract terms and are necessary to satisfy the Government’s stated assurance requirement.

    Business-practice bonds may be allowable

    Bonds required by the contractor in the general conduct of its business are also allowable, but only if they reflect sound business practice. The contractor must be able to show that obtaining the bond is a normal and prudent business decision.

    Reasonableness is required

    Even when a bond is allowable, the rates and premiums must be reasonable under the circumstances. Excessive premiums, unnecessary coverage, or unusual terms may make all or part of the cost unallowable or subject to adjustment.

    Allowability depends on purpose and support

    The key distinction is whether the bond is tied to a contract requirement or to general business operations. Contractors should maintain documentation showing why the bond was obtained, what it covered, and how the premium was determined.

    Responsibilities

    Contracting Officer

    Identify when the contract requires bonding and ensure the requirement is clearly stated in the contract terms. Review claimed bonding costs for allowability and reasonableness when evaluating cost submissions or indirect cost proposals.

    Contractor

    Obtain required bonds when the contract or business needs call for them, and charge only allowable, reasonable costs. Maintain records showing the bond type, purpose, premium, and basis for treating the cost as a contract expense.

    Agency

    Apply the cost principle consistently when negotiating, administering, or auditing contracts. Ensure bonding costs are not reimbursed unless they fit within the rule and are supported by adequate documentation.

    Practical Implications

    1

    Contract-required bonds are usually straightforwardly allowable, but the contractor still needs proof of the premium and the contract clause or requirement that triggered it.

    2

    Business-practice bonds can be allowable, but contractors should be ready to explain why the bond is standard for their operations and why the premium is reasonable.

    3

    A common pitfall is charging broad insurance or bonding expenses to a contract without showing the bond was required or customary in the business.

    4

    Another risk is overpaying for coverage or buying unnecessary bond amounts; only reasonable premiums are allowable.

    5

    Contractors and contracting officers should verify that the bond type matches the purpose claimed, especially for bid, performance, payment, advance payment, infringement, and fidelity bonds.

    Official Regulatory Text

    (a) Bonding costs arise when the Government requires assurance against financial loss to itself or others by reason of the act or default of the contractor. They arise also in instances where the contractor requires similar assurance. Included are such bonds as bid, performance, payment, advance payment, infringement, and fidelity bonds. (b) Costs of bonding required pursuant to the terms of the contract are allowable. (c) Costs of bonding required by the contractor in the general conduct of its business are allowable to the extent that such bonding is in accordance with sound business practice and the rates and premiums are reasonable under the circumstances.

    Back to 31.205FAR Navigator
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