Fixed-to-Floating Preferred

A fixed-to-floating preferred is a class of preferred-stock paying a fixed dividend coupon for a set initial period—often 5 to 10 years—then converting to a floating rate indexed to a benchmark such as SOFR or the old LIBOR. This structure allows issuers to lock in low rates when capital is cheap, then refinance implicitly at market rates as conditions change. Holders of the fixed phase benefit from a defined return; those holding through the floating phase accept benchmark risk.

Why the two-phase structure exists

The fixed-to-floating design solves a financing problem for issuers: how to take advantage of cheap funding today while avoiding being locked into too-low a coupon if benchmark rates rise in the future. In the fixed phase, the company essentially locks in a known cost of capital. When that phase ends and the floating index kicks in, the preferred automatically reprices to current market conditions.

For the holder, the structure offers a trade-off. The fixed phase provides clarity and potential upside if rates fall (you keep your coupon while benchmark rates decline). The floating phase adapts to rising rates but exposes you to benchmark movements you cannot predict.

This is particularly attractive to issuers in low-rate environments. A bank or insurance company might issue a 10-year fixed-to-floating preferred at 4.25% fixed, knowing that when it flips to floating in 2034, it will pay something like SOFR + 300 basis points—a rate that will reflect market conditions 10 years hence.

Mechanics of the transition

The transition from fixed to floating happens on a contractually specified date, with no action required from the issuer or holder. At the end of the fixed phase (say, the tenth anniversary), the next dividend payment jumps to the floating formula: SOFR (or another benchmark) + the spread established at issuance. All subsequent payments follow this floating formula until maturity or redemption.

The spread itself never changes. If the preferred was issued with a spread of +275 basis points over SOFR, that 275 remains constant forever, even if credit conditions deteriorate or improve. This means the issuer’s cost does move with market rates—a direct repricing that occurs automatically without requiring new capital raises or refinancings.

Historical context: LIBOR transition

For many years, most fixed-to-floating preferreds were indexed to LIBOR, the London Interbank Offered Rate. Beginning in the late 2010s, regulators began phasing out LIBOR, which had been tainted by manipulation scandals. Thousands of preferred issues had to be amended to transition to SOFR (the Secured Overnight Financing Rate) or another benchmark, creating a minor wave of investor notifications and technical restructurings.

Many of these transitions were seamless from a total-return perspective but required legal amendments to avoid ambiguity. A few older issues carried “fallback” language that automatically switched benchmarks; others required explicit consent from holders or issuers to change the index.

Risk considerations for holders

In the fixed phase, holders face interest-rate-risk if they wish to sell before maturity. If benchmark rates rise sharply after issuance, the fixed coupon becomes uncompetitive, and the security’s value falls. For example, a preferred issued at 4.25% fixed becomes less attractive if comparable new issues pay 5.5% fixed; to sell yours, you’d have to accept a price discount.

In the floating phase, the risk shifts. You no longer face mark-to-market risk from rising rates (the coupon rises with the benchmark). Instead, you accept basis-risk—the possibility that the spread no longer compensates you fairly given current credit conditions. If the issuer’s credit quality deteriorates, the floating coupon does not automatically increase (the spread is fixed); only the benchmark does.

Additionally, if the preferred is callable (many are), the issuer may redeem it at a set price if rates fall sharply, locking in your return and forcing reinvestment.

Distinction from auction rate preferred

Auction rate preferred resets the rate via market auction at frequent intervals (28 days). Fixed-to-floating preferred resets once, on a predetermined date, to a formula tied to a published benchmark. These are different solutions to different problems: auction rate prefers continuous repricing and minimal interest rate risk; fixed-to-floating prefers a single transition event and benchmark transparency.

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