Introduction
Goldman Sachs ended 2025 with about $11.7 billion of commercial lending commitments classified as held for sale, roughly double the $5.9 billion a year earlier once consumer credit card lines are stripped out, according to Goldman's 2025 annual report. The accounting label describes a business model: promises to lend made with the intention of keeping little of the money lent. Underwriting a sponsor buyout financing works that way. When a private equity firm signs an acquisition, the arranging banks commit to fund the whole debt package at closing, then sell it to investors over the following weeks, and they are paid for carrying the gap between the terms they promised and the terms the market will accept. The commitment letter fixes what the banks will lend and on which conditions. A separate fee letter, rarely published in full in the US, fixes what they are paid and how far they can move the terms if investors resist. Those two documents are where the bank's appetite for risk meets the client's need for certainty, and where the financial sponsors group (FSG) earns its place between them.
What a Bank Promises: Underwritten, Best-Efforts and Club Financing
Banks can stand behind a sponsor's debt in several ways, and the difference is who owns the part investors do not buy. Under an underwritten commitment, the arrangers promise the full amount at closing whatever investors later take. Under a best-efforts arrangement they promise only to try: the European Central Bank (ECB), in its guidance on leveraged transactions, describes an arranger that often commits to fund a small final take if the rest is placed and is not responsible for unsold amounts. A club deal is pre-marketed to a few lenders that agree their shares before closing.
Sponsor acquisitions run mostly on the first model, because a buyer that signs without a financing condition cannot rely on a bank's efforts; the merger agreement's side of that certainty is covered in sponsor commitment letters and reverse termination fees. Direct lenders offer a fourth variant, a held commitment, in which the lenders that sign intend to keep the loan:
| Commitment type | What the lenders promise | Who carries unsold debt | Typical sponsor use |
|---|---|---|---|
| Underwritten | The full amount at closing, on agreed conditions | The arrangers, after any flex they can use | Buyouts and take-privates signed without a financing condition |
| Best efforts | To market the debt, sometimes with a small final take | The borrower: the deal shrinks or fails | Refinancings and deals with no fixed closing date |
| Club | Each lender's pre-agreed share | No one: each lender holds its share | Smaller or relationship-led financings |
| Held (direct lending) | The full amount, intended to be kept | No syndication: the lenders keep the loan | Middle-market buyouts and private credit deals |
The underwritten model also sits behind a seller's pre-arranged package offered to every bidder, with conflicts of its own set out in staple financing in sponsor sale processes.
Inside the Bank: From Term Sheet to Commitment
No bank signs a buyout commitment on the strength of the relationship alone. The route varies by bank, but the decision usually passes through the same hands: leveraged finance (LevFin) structures the debt, the capital markets desk that sells loans and bonds says where they will clear, risk managers set the exposure the bank will accept, and the coverage banker makes the case for the client. A commitment committee then approves the size, pricing protections and expected hold, the forum described in how a sponsor deal is staffed.
The Distribution View Comes First
The desk's read decides most of the structure: where comparable loans and bonds trade, which investors have room for the credit, and how much the market can absorb while the bank is selling, using the primary-secondary linkage traced in how the syndicated loan market works. For the large euro-area banks it supervises, the ECB expects each transaction with underwriting or syndication risk to be approved after an analysis of the market's ability to absorb it, with the price verified by a function independent of the syndication unit.
The answer becomes two sets of terms. The opening terms are what the bank offers the sponsor; the worst terms the desk thinks it might need become the flex it asks for. The space between them is the bank's estimate of its own risk.
Hold Levels, Underwriting Limits and Hedges
The second number is the hold level: how much of the debt the bank expects to keep, typically a small slice of an institutional term loan and a larger share of the revolver. The rest is the sell-down, and until it is placed it uses the bank's underwriting limits. The ECB asks its banks to set dedicated underwriting limits, stress-test the pipeline, and treat a transaction not syndicated within 90 days of the commitment date as a failed syndication, with its own holding strategy, accounting and capital treatment.
Banks also hedge part of the exposure. Goldman's annual report says the firm buys credit protection on certain loans and lending commitments through single-name and index-based credit default swaps (CDS) and by issuing credit-linked notes; how much of a buyout pipeline any bank hedges is rarely disclosed.
A commitment that becomes a held loan also consumes capital the bank had budgeted for other clients, the constraint described in bank capital requirements, so hold levels are argued over as hard as pricing.
The Commitment Papers and What the Public Sees
A sponsor financing commitment is a bundle of commitment papers, each with a different job and audience, and only some of them reach the public record:
| Document | Signed by | What it fixes | Public in a US take-private? |
|---|---|---|---|
| Commitment letter | Arrangers and the sponsor's acquisition vehicle | Amounts, titles, syndication rights, conditions, expiry | Often filed as an exhibit |
| Term sheets | Attached to the commitment letter | Pricing, maturity, amortization, covenants, documentation baseline | Filed with the letter |
| Fee letter | The same parties, separately | Fees, flex rights and caps, securities demand terms | Withheld, or filed with fees and flex redacted |
| Engagement letter | Banks and the sponsor's vehicle | The mandate for any takeout bond offering | Seldom public |
| Definitive credit agreement | Borrower, agent and lenders at closing | Final terms after any flex | Filed if the borrower still reports |
Mister Car Wash: One Commitment, Three Versions
Leonard Green & Partners (LGP), which already held about 67% of Mister Car Wash, agreed on February 17, 2026 to buy the rest for $7.00 a share; the deal completed on May 19 at an enterprise value the company put at about $3.1 billion. The debt was a $900 million first-lien incremental term loan under the company's existing credit agreement, and the commitment letter filed with the going-private schedule shows how it was built. Jefferies Finance committed alone on February 17; an amended letter on March 11 added U.S. Bank, Deutsche Bank, Fifth Third, BMO and Santander, and a second on March 13 added Truist, Natixis and Citizens. Jefferies kept the title of left lead arranger and bookrunner, the other eight became lead arrangers and bookrunners, and each commitment was several, not joint. Jefferies also advised LGP on the acquisition.
The letter reads as a list of what a sponsor negotiates. Funding was subject only to listed conditions under certain funds provisions tied to the merger agreement. LGP could name disqualified lenders, including competitors and other private equity firms, and relationship lenders the arrangers had to approach, and allocations needed its consent. The commitment would lapse if not funded within five business days after the merger agreement's termination date, and the fees could be shown to prospective lenders only as an aggregate line in a sources and uses table.
The stockholder information statement adds the seller's side. LGP represented that the debt proceeds, both before and after any market flex, would be at least the amount the merger agreement required, and the total funds needed were estimated at about $890 million including fees. The buyer side estimated about $40.2 million of legal, advisory and financing fees, the only public trace of what the banks were paid.
Why the Fee Letter Stays Private
A published flex cap tells investors how far the bank can be pushed, and published fees become the benchmark for the next negotiation with the same sponsor. Even the Mister Car Wash merger agreement treated redacting fee amounts and flex terms from a rival bidder's fee letters as customary.
The UK also demands certain funds before a bid is announced, the cash-confirmation standard covered in UK take-privates and the Takeover Code, so UK arrangers commit before the bid is public.
Market Flex: How the Arranger Protects the Sale
Market flex is the price a sponsor pays for underwritten terms tighter than the bank could guarantee to sell. Without it, a bank committing weeks before marketing would have to quote terms safe enough for a bad market; with it, the bank can quote near the current market and keep the right to adjust.
- Market Flex
A right, set out in the fee letter, that lets the arrangers of an underwritten financing change the pricing, discount, structure or certain terms of the debt within agreed caps if needed to syndicate it successfully. Flex usually lasts until a successful syndication, which can fall after closing, and the sponsor must make sure the flexed debt still raises the cash needed to close.
Pricing, Discount, Structure and Terms Flex
Flex comes in four broad forms, each with its own cap:
- Pricing flex: a higher margin over the Secured Overnight Financing Rate (SOFR) or the Euro Interbank Offered Rate (Euribor), sometimes a higher floor.
- Discount flex: a deeper original issue discount (OID), which raises investors' yield but cuts the cash the borrower receives.
- Structure flex: moving debt between tranches, for example from a term loan into bonds, or shortening a maturity.
- Terms flex: tightening documentation points such as baskets, add-backs, call protection or most-favored-nation protection, from a list agreed in advance.
The caps, not the opening margin, are the real price of the commitment. Pricing flex raises interest for the life of the loan, while discount flex costs cash at closing, so a fully flexed loan can raise less than the purchase needs; the Mister Car Wash term sheet let the loan grow by an incremental flex increase, a term defined in the unfiled fee letter. The three-year convention used below to turn discount into yield is explained in how sponsors compare buyout financing offers.
Reverse Flex and the Mister Car Wash Margin
Flex also runs the other way. When orders exceed the loan, sponsors press for reverse flex: a lower margin, a smaller discount or a larger loan. In Warner Music Group's 2004 buyout by Thomas H. Lee Partners, Bain Capital, Providence Equity and Lexa Partners, International Financing Review's 2004 award write-up records that an oversubscribed book let the arrangers upsize the term loan B by $200 million and reverse flex its margin to 275 basis points over the London Interbank Offered Rate (Libor), with a leverage grid down to 250, while the sponsors cut their equity by $50 million to $1.05 billion.
Filings can show the effect of flex without naming it, in the gap between a term sheet and the closing credit agreement. The Mister Car Wash term sheet priced the loan at SOFR plus 2.75%, stepping down to 2.25% once leverage fell a full turn below its closing level. The credit agreement amendment signed at closing set SOFR plus 3.00%, with a single step to 2.75% at first-lien net leverage of 4.00x or less. The filings do not say why the terms moved; a 25 basis point increase and a thinner pricing grid are the kind of change flex provisions allow.
The Fee Ladder and What Titles Buy
The fee letter also sets the banks' pay, in layers that reward different services. Exact percentages are rarely public and move with deal size, market conditions and the risk the bank keeps:
- Commitment or underwriting fee: for putting the balance sheet at risk, sometimes partly due at signing; Mister Car Wash's buyer represented that any commitment fees due by signing had been paid.
- Arrangement and structuring fees: for designing the package and leading the syndicate, weighted toward the left lead.
- Upfront fees and OID: not bank income but paid away to the investors who buy the debt, and the main currency of flex.
- Ticking fee: charged on an unfunded commitment when closing takes months, accruing after an agreed holiday.
- Bridge fees: commitment, funding and duration fees, the last rising the longer a bridge stays drawn.
- Agency fee: an annual fee to the administrative agent for running the loan.
The bank's real income is the fee ladder minus any discount it must fund itself once investor demand runs past the flex caps, and the commitment fee pays for a risk that can cost more than the fee. How these fees weigh against advisory fees in a sponsor's total spend is the subject of financing fees versus advisory fees.
Left Lead, Joint Lead Arranger and Bookrunner
The left lead sits in the left-hand position on marketing materials, usually runs the books and often becomes administrative agent; joint lead arrangers and bookrunners share the work and fees; co-manager or agent-only titles go to banks that commit less. In Apollo's 2021 buyout of Michaels, the arts and crafts retailer, the debt commitment letter gave Credit Suisse "left" and Wells Fargo "right" placement on the term loan and Barclays left placement on both bridges, and barred other titles unless the parties agreed. The commitments sat in tiers that matched: the three banks with placement roles each took 17% of every facility, Deutsche Bank, RBC and Mizuho 13% each, and Bank of America 10%. Titles also carry league-table credit, the rankings explained in how investment banking league tables work.
Sponsors allocate titles deliberately. A left lead on one deal can reward a bank that held a loan through a difficult market, and the largest sponsors now take arranger roles for their own capital markets businesses, the competition traced in sponsor in-house capital markets desks.
Bridges, Exposure Time and the Coverage Seat
A bond underwriter's firm commitment arrives only at pricing, under the underwriting agreement, so banks cannot promise at signing to buy bonds that do not exist yet. When a package includes high-yield bonds, they commit to a bridge loan instead.
Bridge-to-Bond Commitments and the Securities Demand
The Michaels papers show the design. Beside a $2.1 billion term loan, the banks committed a $700 million senior secured bridge and a $1.3 billion senior unsecured bridge, each drawn only for notes not issued by closing; a bridge still outstanding after a year would convert into a term loan exchangeable for notes. The bonds came first: in April 2021 the buyer sold $850 million of 5.25% senior secured notes and $1.3 billion of 7.875% senior notes, according to the lenders' counsel, Cahill. Had the market been shut, the banks' route back to bonds would have been the securities demand.
- Securities Demand
A right in a bridge fee letter that lets the arrangers require the borrower to issue bonds to refinance a bridge loan, on terms within agreed caps on yield and other features, usually once the acquisition has closed. If the borrower refuses, a demand failure typically frees the lenders to sell the bridge loans without the borrower's consent and can trigger other agreed consequences.
In the Michaels terms, assignments leaving the initial lenders below a majority of a bridge needed the borrower's consent until a demand failure. For the sponsor, the demand is a reason to issue bonds early on its own terms, the market covered in the high-yield bond market.
How Long a Commitment Stays Open
Exposure runs from signing until the debt is sold, and the commitment's end date is negotiated against the merger agreement's own deadline; Mister Car Wash closed about three months after signing. Longer regulatory timetables stretch the window, which is when ticking fees and hedges earn their keep, and when a market reversal can leave arrangers holding debt they cannot sell inside the flex caps, the outcome examined in hung deals and syndication risk.
Where the Coverage Banker Fits
Coverage work starts before the term sheet. In a take-private, even talking to lenders can need permission: Mister Car Wash's special committee pre-approved LGP's financing discussions with Jefferies under the confidentiality agreement. Coverage then carries the sponsor's priorities into the commitment process, argues the relationship case, and settles with the sponsor which banks join and on what terms. The harder moment is the flex call: a sponsor can read a fully flexed loan as a bank misjudging the market, and notices which banks spent all their flex in a soft week and which left some unused.
Those choices leave a public trace, though an incomplete one. The commitment letter records where the negotiation started and the credit agreement where it ended; the fee letter that explains the distance stays private. Read as a pair, the two public documents turn every change in margin, grid, size or tranche into a question about who asked for it and what it cost.
