How Interest Rates and Market Cycles Affect Valuation

Introduction

Interest rates and market cycles are the most powerful external forces affecting valuation. They operate through every methodology simultaneously: compressing DCF outputs (through higher discount rates), reducing trading comps multiples (as investors pay less per dollar of earnings), lowering LBO affordability (as debt costs rise), and making precedent transactions from different environments less comparable.

The 2022-2025 period provided an extraordinary real-time case study: as the Federal Reserve raised rates from near zero to over 5.25%, valuation multiples across virtually every sector compressed, M&A activity slowed dramatically, and the bid-ask spread between buyers and sellers widened to the point where deals could not close.

Channel 1: WACC and the DCF

Interest rates directly affect WACC through two components. The risk-free rate (the 10-year Treasury yield) is the foundation of both the cost of equity (through CAPM: risk-free rate + beta x ERP) and the cost of debt (corporate bond yields move with Treasury yields). When the risk-free rate increases by 200 basis points, WACC increases by roughly 100-150 basis points (moderated by the debt tax shield and capital structure weights), which can reduce the DCF-implied enterprise value by 15-25%.

A company valued at $5 billion with a 9% WACC in 2021 might be valued at $3.8 billion with an 11% WACC in 2023, even if its cash flow projections have not changed. The business is identical; only the cost of capital has shifted.

Channel 2: Trading Multiples

Trading multiples reflect how much investors are willing to pay per dollar of earnings. Higher interest rates compress multiples for two reasons:

Time value of money. When rates are low, future earnings are discounted lightly, so investors pay more for them today (higher multiples). When rates rise, future earnings are discounted more heavily, reducing their present value and compressing multiples.

Alternative investments. Higher rates make bonds and other fixed-income instruments more attractive relative to equities. Capital flows toward fixed income, reducing demand for stocks and compressing equity multiples.

Multiple Compression

A decline in the valuation multiple (EV/EBITDA, P/E, EV/Revenue) that the market assigns to a company or sector, without a corresponding decline in the underlying financial metric. Multiple compression is driven by external factors (rising rates, tightening credit, reduced risk appetite) rather than deterioration in the company's fundamentals. During the 2022-2023 rate-hiking cycle, technology sector EV/EBITDA multiples compressed by 40-60% while most companies continued to grow revenue, demonstrating that the market was repricing the cost of future cash flows, not reassessing the companies' earning power.

Channel 3: LBO Affordability

Higher interest rates directly reduce the price financial sponsors can pay because:

When the base rate increased from near zero to over 5% between 2021 and 2023, the maximum price a typical sponsor could pay while achieving a 20% IRR dropped by approximately 1.5-2.0 turns of EBITDA. This shifted the LBO floor on the football field meaningfully lower. History suggests that during rate cut cycles, valuation multiples can increase by nearly a full turn on average as reduced loan yields increase leverage capacity and M&A valuations. The partial rate cuts in late 2024 (100 basis points total) have already begun to improve LBO economics, though all-in borrowing costs remain significantly above the 2020-2021 levels that enabled the most aggressive sponsor pricing.

One of the most consequential effects of rate changes on M&A is the valuation gap between buyers and sellers. Sellers anchor on the higher valuations from the prior environment ("my company was worth $500 million last year"). Buyers reprice to reflect the new cost of capital ("at current rates and leverage, the maximum I can pay is $380 million"). This $120 million gap, driven entirely by rate changes rather than fundamental deterioration, prevents deals from closing.

Bid-Ask Spread (M&A Context)

The gap between the price sellers expect and the price buyers offer. The bid-ask spread widens during market transitions (rate changes, credit tightening, sector-wide repricing) as the two sides adjust to new conditions at different speeds. Sellers typically adjust more slowly because they anchor on recent valuations. Buyers adjust faster because their financing costs and return targets update in real time. The spread narrows as both sides converge on a new equilibrium, which is why M&A volume recovers 12-18 months after a rate shock: the time lag reflects the period required for seller expectations to adjust downward.

The 2024-2025 recovery illustrates this convergence. After three Fed rate cuts totaling 100 basis points in late 2024, M&A sentiment improved dramatically. While actual borrowing rates dropped only modestly, the signal that the rate cycle had peaked gave both buyers and sellers confidence to transact. Global M&A volume rose approximately 36% in 2025, driven by the deployment of over $2 trillion in accumulated PE dry powder and the resolution of the bid-ask gap as sellers adjusted expectations.

Using Historical Comps and Precedent Transactions

When using precedent transactions from a different rate environment, the analyst must acknowledge that historical multiples may not be achievable today. A deal completed at 15x EV/EBITDA in 2021 (near-zero rates) is not a reliable benchmark for a 2025 deal. This is the stale data problem amplified by rate changes.

Sensitivity to Rate Assumptions in DCF

The sensitivity table should prominently feature WACC sensitivity. The analyst should note where the current WACC sits relative to historical levels and show how the implied value changes if rates normalize (higher or lower).

Cyclical Awareness in Earnings Projections

Interest rate cycles interact with business cycles. Rising rates often slow economic growth, which depresses cyclical company earnings. The combination of lower multiples (from higher rates) and lower earnings (from economic slowdown) creates a double compression that can dramatically understate through-cycle value. Mid-cycle normalization addresses the earnings dimension; the analyst must also consider whether the current multiple reflects a cyclical trough or a new structural reality.