Interest Rate Hedging in an LBO: Why the Floating-Rate Debt Gets Swapped or Capped, and How the Hedge Counterparty Ranks Super-Senior — Ahead of the Lender That Funded the Buyout
Michael King, PE Investment Manager · 9 min read ·
- The senior debt in a buyout is floating, not fixed: a term loan is priced at a reference rate (SONIA, SOFR or EURIBOR) plus a fixed margin, so the interest bill the whole LBO model is built on moves with base rates the sponsor does not control
- Hedging is usually a condition of the credit agreement, not optional risk management — lenders typically require the borrower to hedge 50–75% of the term loan for two to three years, put on within a short window after close
- A swap (pay fixed, receive floating) locks the rate with no upfront cost but carries a tail: if rates fall it becomes a mark-to-market liability. A cap pays a premium upfront to protect only against rates rising, keeping the downside — certainty versus optionality
- The hedge counterparty ranks super-senior in the intercreditor waterfall, alongside the revolver and ahead of the term loan — and an out-of-the-money swap must be broken and paid for in cash at exit, a leakage most models miss
The Debt That Funds a Buyout Floats; the Model Assumes It Doesn’t
A leveraged buyout is a bet that free cash flow will service and pay down debt over a hold period, and almost all of that debt carries a floating coupon. A term loan is quoted as a reference rate — SONIA in sterling, SOFR in dollars, EURIBOR in euros — plus a fixed margin, say S+500. The margin is contractual and does not move; the base rate is set by the central bank and the market, and it moves plenty. That means the single largest cash cost in the model is exposed to a variable the sponsor has no control over.
This is why hedging exists in a buyout, and why it is not an afterthought. Interest cover and the cash available to sweep debt both sit downstream of the base rate; a few hundred basis points of movement is the difference between a covenant with headroom and one that trips. Fixed-rate high-yield bonds, where used, are already insulated — it is the floating term loan, usually the largest tranche in the LBO debt stack, that has to be dealt with.
The Credit Agreement Usually Makes Hedging a Condition, Not a Choice
Candidates assume hedging is a judgement call the sponsor makes about where rates are going. In practice the lenders make it for them. The credit agreement typically contains a hedging covenant: the borrower must hedge a set proportion of the term loan — commonly 50% to 75% — for a defined period, often two to three years, and put the hedge on within a short window after close (frequently 90 days). The lender is protecting its own downside: a borrower whose interest cost can double is a borrower more likely to default, and the bank would rather that risk be neutralised than priced.
The hedge is therefore part of the financing package, negotiated alongside the margin and the covenants, not bolted on afterwards. It also shapes which product the sponsor can use, because the agreement usually specifies the minimum notional and tenor but leaves the instrument — swap or cap — to the borrower.
Swap vs Cap: Certainty With a Tail, or Protection You Pay For
The two instruments solve the same problem in opposite ways, and the choice is a genuine view, not a formality.
| Swap (pay fixed) | Cap | |
|---|---|---|
| Upfront cost | None | Premium (roughly 1–2% of notional for a 3-year cap, rate-dependent) |
| If rates rise | Fully protected — rate is fixed | Protected above the strike |
| If rates fall | Stuck paying above market; swap goes out-of-the-money | Keeps the benefit; premium is the only loss |
| Mark-to-market risk | Can become a cash liability at exit | Never a liability; worst case expires worthless |
Swaps dominate because they cost nothing upfront and give the credit committee the certainty it wants; caps win when a sponsor expects rates to fall, wants to preserve that upside, or simply prefers to cap a known premium rather than take on a mark-to-market tail. Put a worked example against it and the trade-off becomes concrete.
A Worked Example: What the Hedge Is Actually Worth
Take a £500M term loan at S+500 — a 5.0% margin over the reference rate. At close the base rate is 1.0%, so the all-in coupon is 6.0% and cash interest is £30.0M a year. Now move the base rate to 5.0%, roughly the journey sterling and dollar rates actually made between 2021 and 2023. Unhedged, the all-in coupon becomes 10.0% and cash interest jumps to £50.0M — a £20.0M annual increase, straight off the free cash flow that was supposed to pay down debt.
Now hedge 75% of the loan — £375M — with a pay-fixed swap struck at a 1.5% base rate. The hedged portion is fixed at 6.5% all-in (£24.4M); the unhedged £125M floats up to 10.0% (£12.5M). Total interest is about £36.9M rather than £50.0M.
The saving is not the point on its own; the point is that it lands exactly where the LBO is most fragile. That £13.1M is cash that would otherwise leave the business as interest, and in the cash sweep and debt schedule it is the fuel for deleveraging. Starve the sweep and the whole return equation slows.
The 2022 Rate Shock Is the Case for Hedging, Priced in Cash
The abstract argument for hedging became a live one after 2022. Deals underwritten in the near-zero years of 2020 and 2021 were built on base rates around or below 1%; by 2023 SONIA and SOFR had climbed above 5% as central banks raised aggressively to fight inflation. A borrower whose all-in coupon had modelled at 6% was suddenly looking at 10% or more — a cash interest bill that did not rise by a tenth but by two-thirds.
Sponsors who had hedged, or been forced to, absorbed a fraction of that. Those whose hedges had rolled off, or who had hedged only the minimum for the minimum period, watched interest cover compress toward the covenant and free cash flow evaporate into the coupon. The cost of an interest cover covenant tripping is not theoretical: it hands the lenders a lever precisely when the business can least afford one. The rate shock did not create the case for hedging — it simply presented the invoice.
The Hedge Counterparty Ranks Super-Senior — Ahead of the Term Loan
Here is the mechanic that separates someone who has read a term sheet from someone who hasn’t. When a pay-fixed swap moves in the counterparty’s favour — the borrower owes it money — that exposure is a secured claim, and in the standard LMA intercreditor structure it does not sit behind the term loan. It ranks super-senior, in the same top tier as the revolving credit facility, and gets paid ahead of the senior secured term loan on enforcement.
This ties straight back to the intercreditor agreement, where the ranking of every claim is set before a single pound of debt is drawn. The hedge is not a side arrangement; it is a ranked creditor in the capital structure, and where it ranks decides who recovers what if the deal goes wrong. That seniority has a mirror image at the other end of the deal, when things go right.
The Mark-to-Market Liability That Surfaces at Exit
A pay-fixed swap has a value that swings with rates, and that value becomes real cash the moment the loan is repaid — on a refinancing, a sale, or an early paydown. If rates rose after the swap was struck, the borrower has been paying below market and the swap is an asset: breaking it releases a positive close-out. But if rates fell below the fixed rate, the swap is a liability, and unwinding it costs cash at the exact moment the sponsor is trying to bank equity proceeds.
That asymmetry — a swap can bite at exit, a cap cannot — is the real reason the swap-versus-cap choice is a view and not a checkbox. It is the same discipline the rest of the structure demands: every financing decision has a consequence that surfaces somewhere in the return.
The Verdict: Hedging Is a Ranked Creditor, Not a Footnote
Interest rate hedging looks like plumbing — a covenant to satisfy, a line in the model to fix — and it is treated that way by candidates who have never seen a credit agreement. The reality is that the hedge sits at three of the most important joints in a buyout at once. It decides how much of the largest cash cost is exposed to rates the sponsor cannot control; it ranks super-senior in the waterfall, ahead of the very term loan it protects; and it can leave a mark-to-market bill at exit that eats into equity proceeds.
The candidate who says “the debt is floating so they hedge it” has the first clause right and the structure missing. The one who says “the term loan floats at a reference rate plus a margin, the credit agreement forces a swap or cap on most of it for two to three years, the hedge counterparty ranks super-senior alongside the RCF, and an out-of-the-money swap has to be broken in cash at exit” is describing what a real deal actually signs. The floating rate is the easy observation. The hedge is where it becomes a decision.
Take Your Preparation Further
Hedging only makes sense once the debt it sits on does, so read it alongside the rest of the financing. Start with the LBO debt stack to see why the term loan floats in the first place; follow the cash it protects through the cash sweep and debt schedule; understand the covenant it defends in maintenance vs incurrence covenants; and see where the hedge counterparty sits when a deal goes wrong in the intercreditor agreement.
To build the interest line, the hedge and the debt paydown yourself inside a live deal model, download the LBO Model Template — PE Ready, and for the financing and valuation mechanics on one page, see the free Valuation Methods Cheat Sheet.
Ready for personalised feedback? Book a 1-on-1 mentoring session with an experienced IB/PE professional.
Frequently asked questions
Why do leveraged buyouts hedge interest rate risk?
Because most of the debt in a buyout is floating-rate. A term loan is priced at a reference rate — SONIA, SOFR or EURIBOR — plus a fixed margin, so the single largest cash cost in the model moves with base rates the sponsor does not control. Since the whole LBO depends on free cash flow servicing and paying down that debt, an unhedged rise in rates directly compresses interest cover and the cash available to sweep debt. Hedging converts some or all of that floating exposure to a known cost, protecting both the covenant headroom and the return. In most deals it is not even optional — the credit agreement requires it.
What is the difference between an interest rate swap and a cap in an LBO?
A pay-fixed swap converts the floating coupon to a fixed one: the borrower pays a fixed rate and receives the floating reference rate, with no upfront premium. The trade-off is symmetry — if rates fall, the borrower is locked into paying above market and the swap becomes a mark-to-market liability that must be settled in cash if the loan is repaid early. A cap works like insurance: the borrower pays an upfront premium (roughly 1–2% of notional for a three-year cap) for compensation whenever rates rise above a strike, but keeps the benefit if rates fall and can never owe more than the premium. Swaps are more common because they cost nothing upfront and give lenders certainty; caps are chosen when a sponsor wants to preserve the upside of falling rates or avoid a mark-to-market tail.
Is interest rate hedging required in a leveraged buyout?
Usually, yes. The credit agreement typically contains a hedging covenant that requires the borrower to hedge a set proportion of the term loan — commonly 50% to 75% — for a defined period, often two to three years, with the hedge put on within a short window after close. Lenders impose this to protect their own downside: a borrower whose interest cost can double is more likely to default. So hedging in a buyout is generally a condition of the financing negotiated alongside the margin and covenants, not a discretionary risk-management decision the sponsor makes on its own view of rates.
Where does the hedge counterparty rank in the intercreditor agreement?
Super-senior. In the standard LMA intercreditor structure, hedging liabilities rank in the top tier alongside the revolving credit facility and are paid ahead of the senior secured term loan and notes on enforcement. The hedge counterparty is usually one of the same senior lenders, and it will only provide the hedge — which the credit agreement requires — if its swap close-out is protected on the same footing as the working-capital lender. The result is that the instrument meant to de-risk the lenders is itself first in the payment waterfall, ahead of the very term loan it protects.
What happens to an interest rate swap when a buyout is sold or refinanced?
The swap must be terminated, and its mark-to-market value is settled in cash at that point. If rates rose after the swap was struck, the borrower has been paying below market and the swap is an asset, so breaking it releases a positive close-out. If rates fell below the fixed rate, the swap is a liability and unwinding it costs cash at exit — a real drag on equity proceeds that never appears in the interest expense line and is often missed in the exit bridge. A cap has no such tail: it either expires worthless or retains some residual value, but it can never become a liability the sponsor has to settle on the way out.