A revolver commitment fee is the annual charge a borrower pays on the undrawn portion of a revolving credit facility, typically 0.25% to 1.00% per year, calculated on the average daily unused balance and usually billed quarterly. It compensates the lender for keeping capital available whether or not the borrower ever draws on the line, and for U.S. federal tax purposes it is often required to be capitalized rather than deducted currently.
What the Fee Pays For
A revolving credit facility gives a company access to a set pool of capital, say $100 million, that it can borrow, repay, and borrow again through the term of the agreement. Interest accrues only on what is actually drawn. The commitment fee is the separate price the borrower pays for the availability of the rest.
Two costs sit behind that fee. The first is opportunity cost. Capital the bank has promised to your facility is capital it cannot lend to someone else. The second is regulatory. Under capital adequacy rules derived from the Basel framework, banks must hold regulatory capital against undrawn commitments, not just funded loans, because a borrower can draw the line at any moment, including during a market disruption when funding is most expensive.
That regulatory cost runs through a mechanism called the Credit Conversion Factor. For undrawn commitments that a bank cannot unconditionally cancel, U.S. banking regulations assign a 50% CCF to commitments with an original maturity exceeding one year.1eCFR. 12 CFR 324.33 – Off-Balance Sheet Exposures The current international Basel standard uses a 40% default CCF regardless of maturity.2Bank for International Settlements. Basel Framework – CRE20 Standardised Approach: Individual Exposures A 50% CCF means the bank must hold capital against half the undrawn amount as if it were a funded loan. That reserved capital is a real cost, and the commitment fee is how the bank recovers it.
One distinction worth flagging: a commitment fee applies only to the unused balance. A facility fee, which some agreements use instead, applies to the entire commitment, drawn and undrawn alike. Investment-grade revolvers more often carry facility fees; leveraged credit agreements more often use commitment fees on unused capacity. The loan document controls, so read the fee clause before assuming which structure you are in.
How to Calculate the Fee
The math is simple: multiply the fee rate by the average daily unused balance, then prorate for the billing period.
Take a $50 million revolver with a 0.50% commitment fee. Over a 90-day quarter, the borrower’s average daily drawn balance was $10 million, leaving $40 million unused on average. The quarterly fee:
$40,000,000 × 0.0050 × (90 ÷ 360) = $50,000
The 360 in the denominator is not a mistake. Commercial lenders commonly use a 365/360 day-count convention, counting actual days in the numerator but treating the year as 360 days. That produces a slightly higher effective rate than a 365-day year would. The credit agreement will specify the method, and on a large facility the difference is not trivial over time.
Fees are paid in arrears, typically quarterly, after the bank has calculated the actual average daily unused balance for the period.
Rate Ranges and What Moves Them
Commitment fee rates generally sit between 0.25% and 1.00% per year. Creditworthiness drives where a borrower lands. Investment-grade companies often pay 25 basis points or less. Leveraged borrowers commonly pay 50 basis points or more.
Many agreements do not fix a single rate for the term. They use a pricing grid tied to a financial metric, usually a leverage ratio or credit rating. As leverage rises or the rating slips, the commitment fee rate steps up; if the borrower deleverages, it steps down. The same grid usually governs the interest spread on drawn amounts, so the fee and the borrowing rate move together with the borrower’s financial condition.
Some facilities layer on a utilization fee that kicks in when drawn balances exceed a threshold, often 50% of the total commitment. It raises the all-in cost when the line is heavily used and compensates the syndicate for the added funding risk.
Tax Treatment
The federal tax treatment of a revolver commitment fee is more contested than borrowers often assume, and the IRS has landed in different places depending on how the fee is characterized.
Under Revenue Ruling 81-160, the IRS treats a commitment fee that functions as a “standby charge” as a capital expenditure. The fee buys a property right, the right to borrow, and if the borrower exercises that right the fee becomes part of the cost of the loan and is amortized over the loan’s term.3Internal Revenue Service. Revenue Ruling 81-160 Memorandum
More recently, in Field Attorney Advice 20182502F, the IRS looked at quarterly commitment fees on a revolving credit agreement and concluded they had to be capitalized under Section 263(a) rather than deducted currently. The IRS found that the fees “facilitate the acquisition of a line of credit, which is an intangible asset with a benefit that extends substantially beyond the taxable year.”4Internal Revenue Service. Field Attorney Advice 20182502F
Technical Advice Memorandum 200514020 went the other way. The IRS characterized the fee there as more like a “maintenance charge” than a standby charge and allowed a current deduction, on the reasoning that the fees did not produce significant future benefits. The result turned on how the specific credit agreement structured the fee.
The practical point: whether commitment fees on your facility are currently deductible or must be capitalized and amortized depends on the specific facts, and the analysis is worth doing with a tax advisor before the first return is filed. Getting it wrong compounds across the life of a multi-year facility.
Section 163(j) Interest Limitation
Section 163(j) caps the deduction for business interest expense at 30% of adjusted taxable income for many borrowers.5Office of the Law Revision Counsel. 26 US Code 163 – Interest Commitment fees are not swept into that cap. The final Treasury regulations (T.D. 9905) exclude commitment fees and debt issuance costs from the definition of interest for Section 163(j) purposes, reversing earlier proposed rules that would have included them.6eCFR. 26 CFR 1.163(j)-1 – Definitions When the 163(j) limitation bites, commitment fees sit outside the calculation.
Book Accounting
For financial reporting, the recurring commitment fee on unused capacity is generally expensed in the period incurred. It appears as a financial expense on the income statement, separate from interest expense on drawn balances, because it pays for availability rather than actual borrowing.
Upfront fees paid at closing are treated differently. Those are typically capitalized as deferred financing costs and amortized over the term of the facility, on the theory that the upfront charge buys access across the full contract period. Book treatment and tax treatment of the same fee can diverge, which is why the tax analysis above matters even when the accounting entry seems settled.
Other Fees on the Same Facility
A revolver usually carries more than one fee, and it helps to know which is which when the invoices arrive.
- Upfront fee: a one-time charge at closing, typically 0.10% to 0.50% of the total commitment, paid to the arranger or syndicate for structuring the deal.
- Administrative agent fee: in syndicated facilities, an annual fixed fee paid to the agent bank for managing drawdowns, payments, and lender communications.
- Utilization fee: an additional charge that applies once drawn amounts cross a stated threshold, commonly 50% of the commitment.
- Ticking fee: a charge that accrues between the date lenders commit (often for an acquisition financing) and the date the facility actually closes, covering the period when capital is reserved but not yet accessible.
Cutting the Fee by Reducing the Commitment
Most revolving credit agreements let the borrower permanently reduce the commitment size without penalty, subject to notice and minimum increment requirements spelled out in the document. A company that carries a $200 million line but only ever needs $100 million can cut the commitment and roughly halve the fee. Because the commitment fee is a pure cost of unused capacity, right-sizing to peak usage plus a sensible buffer is one of the cleanest ways to lower all-in borrowing costs. The tradeoff runs the other way too: cut too far, and if you later need more capacity you will have to negotiate an increase or new financing, often on worse terms than the original deal.