Letter of Credit Sublimits in ABL Revolvers: How L/C Capacity, Fees, and Reserves Work in Your Borrowing Base

Open the term sheet for almost any asset-based lending revolver and, alongside the headline commitment amount and the borrowing base mechanics, you will find a smaller number labeled "letter of credit sublimit." It is easy to glance past — a $20 million sublimit under a $200 million facility feels like a footnote. It is not. For borrowers who use trade letters of credit to pay foreign suppliers, post performance bonds, or stand behind insurance and rent obligations, the L/C sublimit determines whether the facility will actually carry your operating needs or force you into a separate, more expensive bank line.

This post explains how the letter of credit sublimit sits inside an ABL revolver, how an outstanding L/C consumes both commitment and borrowing base availability, the fee stack borrowers actually pay, when the lender will demand cash collateralization, and six negotiation points borrowers should raise at the term sheet stage.

How the L/C Sublimit Sits Inside the ABL Revolver

The letter of credit sublimit is a subfacility — a cap on the portion of the overall revolving commitment that may be deployed as letters of credit rather than as cash loans. The Journal of Accountancy's overview of asset-based financing describes the relationship cleanly: within the overall line of credit, there can be a sublimit for letters of credit. As an example, an asset-based lender may grant a company an overall line of $16 million, which includes $2 million for letters of credit and $14 million for loans collateralized by receivables and inventory.

Two mechanics matter for borrowers:

• Issued L/Cs reduce availability dollar-for-dollar. Every dollar of letter of credit outstanding under the sublimit reduces the borrower's availability under the borrowing base in the same way as a cash draw. If a borrower has $40M in borrowing base, draws $20M in cash loans, and has $5M in standby letters of credit issued, remaining availability is $15M — not $20M.
• The sublimit is a cap on issued L/Cs, not an addition to the overall commitment. A $200M facility with a $30M L/C sublimit can support up to $30M in L/Cs and up to $200M in cash loans, but the combined exposure across both can never exceed the lesser of the borrowing base or the $200M commitment.

The L/C sublimit is usually expressed as a fixed dollar amount or as a percentage of the overall commitment — five to fifteen percent is common in middle-market deals, though sponsor-backed and large-corporate deals can carry sublimits at twenty-five percent or higher when the borrower has heavy trade financing needs. In recent disclosed ABL facilities, sublimits range from very small (e.g., a $5M sublimit under a $65M facility for distressed credits) to very large (e.g., the $200M letter of credit sublimit reported under a $1.0B+ retail ABL facility), depending on the borrower's actual L/C utilization profile.

What Letters of Credit Get Used For in ABL Facilities

Letters of credit issued under an ABL revolver fall into two functional categories:

Standby Letters of Credit (Standby L/Cs)

The dominant category in middle-market and larger ABL facilities. Standby L/Cs back obligations that the borrower does not expect to draw on under ordinary conditions but that a counterparty demands as performance assurance. Typical uses include:

• Workers' compensation insurance program collateral, especially for self-insured retentions
• General liability and other casualty insurance collateral
• Performance bonds for construction, manufacturing, and contract services
• Real estate landlord lease security deposits
• Surety obligations, utility deposits, and regulatory bonds
• Credit support to suppliers and vendors that the borrower could not obtain on open account

Commercial (Documentary) Letters of Credit

Used to pay foreign suppliers under documentary trade terms — the L/C pays the supplier on presentation of shipping documents, removing the supplier's payment risk and giving the borrower a definitive payment commitment without prepaying. Important for importers, distributors with overseas vendor concentration, and manufacturers sourcing components abroad.

The same sublimit typically covers both categories, though some facilities subdivide the sublimit further between standby and commercial L/Cs to manage the issuer's exposure profile.

The L/C Fee Stack: What Borrowers Actually Pay

L/C pricing in an ABL revolver is a stack — multiple fee layers that the borrower must model together to understand the all-in cost. The four core layers, and a representative range for each:

Fee	Paid to	Typical range	What it compensates
L/C participation fee	Lenders, ratably by commitment	Equal to the applicable margin on revolving loans (commonly 1.50% - 3.50%)	The credit risk the lenders share by participating in the L/C
Fronting fee	Issuing bank only	0.125% - 0.25% per annum	The issuer's incremental risk and administrative role in actually fronting the instrument
Issuance and amendment fees	Issuing bank	Customary issuance, transfer, and amendment fees per the bank's fee schedule	The operational work of issuing, amending, transferring, or canceling each L/C
Unused line fee (indirect)	Lenders	0.25% - 0.50% per annum on undrawn commitments	The unused portion of the commitment, including the L/C sublimit capacity, even when no L/C is issued

For comparison, a standalone standby letter of credit issued outside an ABL revolver — through a relationship bank or specialty issuer — typically prices at one to ten percent per annum, depending on credit and collateral. The ABL-embedded L/C is almost always materially cheaper because it sits inside a fully collateralized facility, the lenders are already underwriting the borrower, and the issuer is the same institution leading the ABL.

This is one of the reasons borrowers who heavily use letters of credit should size the L/C sublimit deliberately at the term sheet stage rather than relying on the lender's default. The L/C cost differential between an ABL-embedded L/C and a standalone standby L/C can run two to four hundred basis points — meaningful money on a $20M L/C book.

When the Lender Will Demand Cash Collateralization

The L/C is not a loan that gets repaid on a schedule. Until it expires unutilized or is drawn and reimbursed, it sits as a contingent obligation. ABL credit agreements address this contingency with cash collateralization mechanics — provisions requiring the borrower to fund a deposit equal to (or in excess of) the face amount of all outstanding L/Cs upon certain triggers. Common triggers:

• Event of default. Acceleration of the facility typically requires the borrower to cash-collateralize all outstanding L/Cs, usually at 100% to 105% of face amount.
• Facility termination or maturity. If letters of credit remain outstanding at or near maturity, the borrower must cash-collateralize them so the issuing bank is protected after the credit agreement no longer applies. Cash collateralization at 103% to 105% of face is standard.
• L/Cs with expiration beyond the maturity date. A single L/C with an evergreen or extended expiration past the facility maturity date is often cash-collateralized at issuance or near maturity.
• Borrowing base shortfall. If the borrowing base ever falls below outstanding loans plus L/Cs, the credit agreement typically requires the borrower to either prepay cash loans or cash-collateralize L/Cs sufficient to cure the deficiency.
• Defaulting lender carveouts. If a participating lender becomes a "defaulting lender," the issuer can require cash collateralization equal to that lender's share of L/C exposure.

The 103% to 105% cushion above face amount is industry-standard and is intended to cover potential interest, fees, and currency revaluation on a foreign-denominated L/C. Borrowers should expect it and model liquidity around it — a $20M L/C book at 105% requires $21M of cash to collateralize on demand.

Six Terms Borrowers Should Negotiate at the Term Sheet Stage

Donald Clarke — SFNet Hall of Fame inductee, recipient of the SFNet Lifetime Achievement Award, author of Asset Based Lending Disciplines (the first ABL textbook), and the lead trainer behind the curriculum at ABLC — has spent four decades inside ABL credit agreements at GE Capital, JP Morgan Chase, Lloyds, Barclays, and other institutions, training more than five thousand ABL professionals on the terms that quietly matter and the terms that loudly do not. On L/C sublimits, six items are worth negotiating at the term sheet stage:

1. Right-Size the Sublimit to Actual Usage Plus Growth

Undersized L/C sublimits force borrowers to seek standalone L/Cs at materially higher cost. Oversized sublimits cost nothing in cash terms but can be reduced over time. The right number is current usage plus an eighteen to twenty-four month growth assumption — not the lender's default of "five to ten percent of the facility."

2. Negotiate the Participation Fee Margin

L/C participation fees almost always equal the applicable margin on revolving loans. If your spread is SOFR+275, your L/C participation fee will be 2.75%. Push for the L/C fee to be set at the same applicable margin grid as revolving loans — so if a leverage step-down reduces the loan margin, the L/C fee falls with it. Some facilities decouple these grids and quietly pin L/C fees above the loan margin.

3. Cap the Fronting Fee

Fronting fees are typically presented as 0.125% to 0.25% per annum. Push for the lower end and confirm the fronting fee accrues on undrawn face amount only — not on amounts already cash-collateralized.

4. Issuance Fee Schedule Transparency

Issuance and amendment fees are usually charged per the issuing bank's "standard fee schedule," which is rarely attached to the term sheet. Ask for the schedule, model it for expected L/C activity (issuances, amendments, transfers), and negotiate any line items that are out of market — particularly amendment fees on auto-renewing standby L/Cs that get amended annually.

5. Cash Collateralization Cushion at 102%, Not 105%

The cushion above face amount is negotiable. For Dollar-denominated L/Cs that are not auto-renewing, 102% is reasonable and often available. The 105% standard is set against worst-case interest, fees, and FX revaluation that may not actually apply to your L/C book. Reducing the cushion from 105% to 102% on a $20M L/C book saves $600K of trapped cash on demand.

6. Treatment of L/Cs Expiring After Maturity

Standby L/Cs that auto-renew can have expirations stretching well past the facility maturity. The credit agreement should specify clearly when cash collateralization applies — at issuance of any L/C with expiration beyond maturity, only at maturity itself, or only if the L/C is not replaced. The default in many forms is the most conservative (cash-collateralize at issuance), which traps cash unnecessarily.

How DCE Helps Borrowers Size and Negotiate the L/C Subfacility

Don Clarke Enterprises is an independent advisor and loan placement consulting firm. We do not lend, issue letters of credit, fund, or underwrite. What we do is help borrowers prepare for an ABL placement, package the deal for the lender market, and advise on the term sheet terms that quietly shape facility economics — including the L/C sublimit, fee stack, and cash collateralization triggers. For related reading, see our posts on the all-in cost of an ABL facility, cash dominion mechanics, and DACA legal mechanics.