Irrevocable Letters of Credit Under FAR 52.228-14: Myths vs. Facts
Federal solicitations allow contractors to provide financial security through alternatives to traditional corporate surety bonds. When estimators, small general contractors, and trade subcontractors explore options for bid, performance, or payment protection, an Irrevocable Letter of Credit (ILC) often enters the conversation. However, federal procurement regulations impose precise constraints on these financial instruments. Understanding the exact requirements of FAR 52.228-14 Irrevocable Letter of Credit prevents costly bid-day disqualifications and miscalculated financing expenses.
Myth 1: Any Insured Commercial Bank Can Issue an ILC for Your Bid
Fact: The federal government restricts which financial institutions may issue or confirm an ILC. Under FAR 52.228-14, only federally insured financial institutions rated investment grade by a commercial rating service qualify. Furthermore, that rating agency must be registered as a Nationally Recognized Statistical Rating Organization (NRSRO) with the U.S. Securities and Exchange Commission.
The clause also establishes specific financial volume thresholds:
- The offeror or contractor must provide the Contracting Officer with a credit rating showing the institution holds the required investment-grade rating as of the date the letter of credit is issued.
- If an ILC exceeds $5 million, it must be confirmed by another acceptable financial institution that conducted at least $25 million in letter of credit business over the past year, unless the original issuing bank itself reached at least $25 million in letter of credit transactions during that timeframe.
Myth 2: A Bid Security Letter of Credit Can Expire When Bids Open
Fact: Estimators cannot match the letter of credit expiration date to the bid submission or opening date. If an ILC serves as a bid guarantee, FAR 52.228-14 dictates that the letter of credit must expire no earlier than 60 days after the close of the bid acceptance period. Setting an earlier cutoff date will invalidate the security and compromise the bid submission. For broader rules surrounding initial bid submissions, see our overview on FAR 52.228-1 bid guarantee requirements.
Myth 3: Performance and Payment Security Ends at Substantial Completion
Fact: Using an ILC in place of traditional performance or payment bonds requires coverage that extends long past physical project handoff. Contractors choosing to replace corporate sureties must account for defined statutory time horizons:
- For contracts subject to 40 U.S.C. chapter 31, subchapter III, Bonds: Coverage must extend to the latest of one year following the expected date of final payment, the end of any warranty period (for performance coverage), or the resolution of all claims filed against the payment bond during the one-year window following final payment.
- For contracts not subject to 40 U.S.C. chapter 31, subchapter III, Bonds: The coverage period must run until the later of 90 days following final payment or the completion of any applicable warranty period (for performance security).
Before substituting bank letters of credit for standard bond structures, review how these liabilities align with traditional options in our guide to bid bonds, performance bonds, and payment bonds.
Myth 4: A One-Year Letter of Credit Simply Expires Without Warning
Fact: Contractors may submit an ILC with an initial term estimated to cover the entire obligation period, or an initial term with a minimum period of one year from issuance. However, the clause requires an automatic renewal mechanism. The ILC must state that it automatically extends without amendment for one year from the current expiration date (or any future expiration date) unless the issuing bank provides the federal beneficiary written notice of non-renewal at least 60 days before that date arrives.
This automatic annual renewal continues until the required coverage period concludes and the Contracting Officer issues a formal written waiver relinquishing rights to payment.
Myth 5: The Contracting Officer Must Prove Default Through Lengthy Arbitration to Draw Funds
Fact: An ILC constitutes a written commitment by the issuing institution to pay upon presentation by the government of a written demand. Under the mandatory clause text, neither the financial institution nor the contractor can revoke or place conditions upon the letter. The instrument requires the presentation of no documentation other than the written demand, the sight draft, and the original letter of credit (plus confirmation paperwork, if applicable).
Additionally, the clause notes that if the credit expires during an interruption of the financial institution's business under Uniform Customs and Practice rules, the institution explicitly agrees to honor drafts drawn within 30 days after business operations resume.
Sources
FAR 52.228-14 Irrevocable Letter of Credit, Acquisition.GOV
Published October 29, 2026. No affiliate links on this page. Facts come from the sources linked above; check them for updates.