Introduction
On August 14, 2024, Mars announced a deal to buy Kellanova, the company behind Pringles and Cheez-It, for $83.50 a share in cash, about $35.9 billion including net debt. Mars, a family-owned company, planned to pay with cash on hand and new debt it had not yet raised. What it had on signing day was a committed bridge loan from JPMorgan and Citi: a binding promise to lend up to $29 billion at closing if nothing else was in place.
That promise is why Kellanova's board could accept a merger agreement that, as the definitive proxy statement filed with the SEC notes, contains no financing condition at all. The bridge was never meant to fund. In March 2025 Mars raised most of its permanent financing, selling $26 billion of investment grade bonds against roughly $114 billion of orders, nine months before the deal closed in December 2025.
Commit at signing, replace before closing: that sequence is the core of acquisition financing. This guide covers why sellers insist on financing certainty, how bridges are documented, priced, syndicated and taken out, what happens to banks when markets turn, and how it all shows up in a merger model.
Investment Grade and Leveraged Bridges at a Glance
Every acquisition bridge does the same job, but the product splits in two by borrower. An investment grade bridge backs a strong corporate buyer such as Mars and is unsecured, short and simple. A leveraged bridge backs a private equity buyout or a sub-investment grade acquirer, sits with the leveraged finance desk, and is built to be refinanced with high yield bonds.
| Feature | Investment grade bridge | Leveraged bridge |
|---|---|---|
| Typical buyer | Rated strategic acquirer | PE sponsor or junk-rated buyer |
| Tenor | 364 days, no extension | One year, then rolls into term debt |
| Pricing over time | Margin up 0.25% every 90 days | Margin up quarterly to a cap |
| Market flex | Limited, mostly pricing | Pricing, terms and structure |
| Securities demand | No | Yes, in the fee letter |
| Usual takeout | IG bonds and term loans | High yield bonds |
| Main bank risk | Funding a weakened borrower | Yields rising above the cap |
- Bridge Loan
A bridge loan is short-term debt that banks commit to lend so a buyer can sign an acquisition without a financing condition, on the expectation that bonds, term loans, equity or asset sale proceeds will replace it before or soon after closing. Investment grade bridges typically mature 364 days after closing, and their cost rises the longer they stay drawn.
Why Buyers Need Committed Financing at Signing
No Financing Condition, No Signed Deal
A board that agrees to sell gives up a lot at signing: it stops talking to other bidders, accepts limits on running the business, and tells the world the company is changing hands. If the buyer's obligation to close depended on raising debt, a bad month in credit markets would hand it a free exit after the seller had paid those costs. That is why sellers in US public deals, and in most competitive auctions, expect no financing condition.
A bridge lets the buyer make that promise without holding the cash, and it strengthens the bid, since financing certainty is a term sellers compare across offers. In sponsor deals the seller's usual remedy if the debt fails is a reverse termination fee, which is why sellers scrutinize the debt commitment as closely as the price.
Why Not Raise the Bonds on Day One?
An investment grade buyer could issue bonds the day it signs. The obstacle is the executory period while antitrust and other approvals run; Mars waited about 16 months, with the European Commission the last to clear the deal. Borrowing at signing means:
- Paying interest on money that may not be needed for a year or more
- Locking in permanent debt for a deal regulators could still block
- Building in a costly exit in case the deal fails
Mars did pre-fund in the end, and its notes show that cost: a special mandatory redemption required it to buy them back at 101% of face, plus accrued interest, if the deal had not closed by August 20, 2026. A bridge lets the buyer defer that choice until the deal's prospects are clearer.
The Commitment Papers and SunGard Conditionality
Commitment Letter, Term Sheet and Fee Letter
The financing is documented in a few papers signed alongside the merger agreement, long before any full credit agreement exists:
- Commitment letter: the banks' binding undertaking to lend, plus syndication and confidentiality terms.
- Term sheet: amount, tenor, pricing grid, covenants and conditions to funding.
- Fee letter: the confidential economics, plus flex and securities demand terms in leveraged deals.
- Engagement letter: roles for the committing banks in any bond takeout.
Among the wider set of M&A deal documents, the debt commitment letter answers the seller's simplest question: who is actually paying? The term sheet does most of the work, since the definitive credit agreement is sometimes negotiated only once funding starts to look likely.
SunGard Provisions and Limited Conditionality
Commitment letters once gave lenders more ways out than the merger agreement gave the buyer, so a buyer could be bound to close while its banks were not. The fix is named after the 2005 buyout of SunGard Data Systems, an $11.3 billion deal by seven private equity firms, and SunGard provisions are now standard in US acquisition financing. Under this limited conditionality, the banks must fund once:
- The acquisition closes under the merger agreement, with no lender-adverse amendments made without consent
- No material adverse effect on the target has occurred, as the merger agreement defines it
- Target representations the buyer could walk away on, plus a short list of specified representations about the borrower such as existence and solvency, are accurate
- Agreed financial statements, legal opinions, know-your-customer information and fees are delivered
- SunGard Provisions
SunGard provisions are clauses in a US acquisition financing commitment that limit the lenders' conditions to funding so they match the conditions in the acquisition agreement. Lenders can refuse to fund only if specified representations fail or a condition the buyer could itself walk away on is unmet, and most collateral can be perfected after closing, giving the seller "certain funds" style comfort that the financing will not sink the deal.
Just as telling is what the list leaves out: there is no market disruption out and no condition that the bonds actually sell.
How a Bridge Loan Works: Size, Pricing and Fees
Sizing, Tenor and Commitment Reductions
A bridge is sized to the gap: the cash needed at closing for the price, any target debt that must be refinanced and fees, less cash on hand and other committed funding. Mars's $29 billion bridge sat below the $35.9 billion headline, which included Kellanova's net debt.
Mandatory commitment reductions then shrink it dollar for dollar as the buyer raises net proceeds from bonds, term loans, equity or asset sales. An investment grade bridge matures 364 days after closing, with no option to extend. A leveraged bridge typically runs for one year and then converts into extended term loans that lenders can swap for exchange notes, so a bridge nobody refinances becomes long-term debt rather than a maturity default.
Pricing That Gets Worse Every Quarter
Bridge pricing is built to be unpleasant to keep. The margin starts on a ratings-based grid and climbs every 90 days, while one-off fees land at fixed points after funding. The schedule below is from the bridge J.M. Smucker signed in 2015 to buy Big Heart Pet Brands, a structure practitioners describe as typical:
| Days after funding | Margin | One-off fee |
|---|---|---|
| 0 to 89 | Grid margin by rating | Funding fee of 0.50% |
| 90 | Up 0.25% | Duration fee of 0.50% |
| 180 | Up another 0.25% | Duration fee of 0.75% |
| 270 | Up another 0.25% | Duration fee of 1.00% |
| 364 | Loan matures | Must be repaid |
Leveraged bridges escalate harder: the margin is usually fixed for three months, then rises each quarter, often by 0.50% at a time, up to an agreed total cap.
The Fee Stack
Each fee pays the banks for a different stage of commitment risk, and most of the percentages sit in the confidential fee letter:
- Commitment fee: for agreeing to lend at all, drawn or not; rarely disclosed.
- Ticking fee: an annual rate on the undrawn commitment while approvals run, roughly 0.05% to 0.2% in investment grade filings, set by rating.
- Funding fee: payable only if the bridge is drawn.
- Duration fees: charged on amounts outstanding at 90, 180 and 270 days.
- Alternate transaction fee: paid to the committing banks if the buyer uses other lenders.
This ticking fee is unrelated to the merger agreement ticking fee some buyers pay sellers for regulatory delay, a common mix-up in interviews.
Acquisition financing sits at the center of M&A technicals: The 160-page PDF covers the M&A, LBO and valuation frameworks that bridge questions build on, and connect financing mechanics to the deal math interviewers test.
Syndication, Market Flex and Hung Bridges
Syndication and Market Flex
A bridge usually starts with a handful of lead arrangers who sign alone to keep the deal confidential, then sell most of the commitment to other banks after announcement. In leveraged finance, JPMorgan alone committed $20 billion for the Electronic Arts take-private agreed in 2025, brought in other lenders within a month, and began selling the debt to investors in 2026, per Bloomberg.
Syndicate banks take the ticket partly for the bridge fees and partly for proportionate roles in the bonds that replace it. If other lenders resist the original terms, the arrangers have a tool for that.
- Market Flex
Market flex is a provision, usually in the fee letter, that lets the arranging banks change the terms of a committed financing during syndication if investors will not buy it as originally priced. In leveraged deals it can cover pricing (including original issue discount), covenant baskets, prepayment premiums and tenor, within negotiated limits; in investment grade bridges it is typically a capped pricing increase.
Flex is the banks' cushion, and its limit is their risk. A leveraged fee letter also carries a securities demand, letting the banks force the borrower to issue bonds, but only up to a yield cap. If investors want more than the cap allows, the borrower still gets capped terms and the banks absorb the gap by selling the debt below par or holding it, an underwriting loss.
Hung Bridges in 2022
The year 2022 showed that cap binding across a whole underwriting pipeline, as rates rose sharply after banks had committed to large buyouts:
- Twitter: a Morgan Stanley-led group committed $13 billion, including $6 billion of bridge financing meant to be refinanced with bonds. The banks funded at closing in October 2022 and held the debt for more than two years, as the Musk-Twitter acquisition case study details, before selling $5.5 billion of the loans at 97 cents on the dollar in February 2025.
- Citrix: banks led by Bank of America, Credit Suisse and Goldman Sachs sold $8.55 billion of a roughly $15 billion buyout package in September 2022, the loans at 91 cents and the bonds at 83.6 cents, a loss Reuters put near $700 million; Bloomberg later estimated total losses would pass $1.3 billion.
- Hung Deal
A hung deal, also called a hung loan or hung bridge, is committed acquisition debt that the underwriting banks cannot sell to investors on the agreed terms, usually because market yields have risen or the borrower's outlook has worsened. The banks still have to fund at closing, then either hold the debt on their balance sheets or sell it at a discount and book a loss.
Investment grade bridges carry a different exposure. The bond market for strong credits is deep and the ratings grid passes higher costs to a weakened borrower, so the main risk is funding a buyer whose credit has slipped, since the buyer's own material adverse change is usually not a condition to funding.
The Takeout: Replacing the Bridge Before It Funds
Four Sources of Permanent Capital
The takeout is the permanent financing that retires the bridge commitment, and it comes from four sources:
- Bonds: the main tool for investment grade buyers, often sold months before closing.
- Term loans: prepayable bank debt for the slice the buyer plans to repay quickly.
- Equity: new shares or a rights issue, when protecting the rating outweighs dilution.
- Asset sales: disposals, including divestitures regulators require.
Because each source cuts the commitment as it lands, a bridge shrinks in stages, with the mix set by cost, flexibility and the credit rating. Leveraged takeouts are high yield bonds sold near closing or into escrow, with the bridge funding any shortfall.
Synopsys and Ansys: A Bridge Cut to Zero
Synopsys's roughly $35 billion cash-and-stock acquisition of Ansys shows each permanent financing source at work, as its filings record:
Signing, January 2024
Synopsys signs a $16 billion bridge commitment with JPMorgan, Bank of America and HSBC, in tranches of $11.7 billion and $4.3 billion.
Term loan, February 2024
A $4.3 billion term loan agreement replaces the second tranche, which is terminated.
Asset sale, October 2024
Selling the Software Integrity business cuts the bridge by $1.1 billion to $10.6 billion.
Bonds, March 2025
$10 billion of senior notes raise about $9.9 billion net, and the bridge falls by the same amount.
Closing, July 2025
The last $690 million or so is terminated, the term loan is drawn, and the bridge never lends.
Never drawn did not mean free. Synopsys's quarterly report filed with the SEC shows about $72 million of bridge and term loan financing costs paid in the first nine months of fiscal 2024, with bridge costs then amortized through earnings.
Bridge Financing in Merger Models and Ratings
Sources, Uses and the Downside Case
In a merger model's sources and uses table, the cleaner base case shows the expected permanent financing rather than the bridge itself: bonds, term loans and cash as sources, with bridge fees among the financing fees in uses, the standard layout this guide to sources and uses of funds walks through. Interest runs at the permanent yield, with a bridge-funded downside as the stress case.
Public filings can be more conservative. Synopsys's registration statement for the Ansys merger built its pro forma interest cost on bridge terms for the $11.7 billion not yet refinanced, including $321.8 million of funding and duration fees that it noted would disappear if the bridge was never drawn. That is 2.75% of the commitment, exactly what a 0.50% funding fee plus duration fees of 0.50%, 0.75% and 1.00% would produce.
The Rating Agency Angle
For an investment grade buyer a debt-funded deal is also a ratings event, because the agencies react at announcement. Moody's placed Mars's A1 rating on review for downgrade and S&P said it could lower its A+ rating; the bonds Mars sold in March 2025 were rated A2 and A, one notch lower on each scale.
That is why acquirers model pro forma leverage and a deleveraging path before signing, and sometimes add equity or disposals to protect the rating, the trade-offs at the heart of M&A rating assessment work.
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Interview Questions and Common Traps
- "Why would a buyer pay for a bridge it never plans to draw?" Sellers will not accept a financing condition, so the bridge buys the right to promise a closing date, plus time to raise permanent debt once approvals are in sight. The trap is calling it cheap short-term funding, when its real product is certainty.
- "Walk me through how a bridge gets taken out." Bonds, term loans, equity and asset sales each cut the commitment as proceeds arrive, ideally to zero before closing. The trap is describing one large repayment after closing.
- "What happens if the high yield market shuts after signing?" The banks still fund. They flex terms up to the caps, then sell at a discount or hold the paper, which is how 2022 produced hung deals. The trap is saying the banks can walk away.
- "Is a bridge the same as stapled financing?" No. The buyer arranges a bridge for its own bid, while stapled financing is arranged by the seller's bank and offered to every bidder, who may or may not use it.
Key Takeaways
- A bridge loan lets a buyer sign a cash deal with no financing condition; its job is certainty, not funding.
- SunGard provisions limit the lenders' outs to conditions that mirror the merger agreement.
- Bridges get more expensive with time through margin step-ups every 90 days plus funding and duration fees.
- Commitment reductions shrink the bridge as permanent capital arrives, ideally to zero before closing.
- Leveraged bridges expose banks to markets beyond the flex caps, which is how 2022 produced hung deals.
- In a merger model, fund the base case with the takeout and stress-test a drawn bridge.
Conclusion
A bridge loan looks like a lending product and behaves like an insurance policy. The buyer pays commitment and ticking fees so it can promise a closing date without knowing what the bond market will look like on that date, and the banks take the risk because the commitment positions them for the takeout. When markets cooperate, as they did for Mars and Synopsys, the bridge disappears before anyone notices it. When they do not, as in 2022, the banks learn what committed really means.
For interviews, the skill is connecting the pieces: why the seller demands financing certainty, how limited conditionality delivers it, how the fee stack pushes the borrower toward permanent capital, and how the takeout and the credit rating shape the merger model. Explain the bridge as a promise with a price attached, and the rest of the conversation follows.
