Why Fixed Annuity Rates Change Even Though They're "Fixed"

The rate that moves is the new-money rate

People are often surprised that fixed annuity rates change at all. The confusion makes sense given the name. "Fixed" describes what happens to your rate once you lock it in for your term. It does not describe the rate insurers offer to people buying a new contract. Those new-money rates change, sometimes several times in a few months.

Why rates move: bond yields

When you put money into a fixed annuity, the insurance company invests it, mostly in high-quality bonds, and pays you a guaranteed rate out of what those investments earn. When bond yields rise, insurers can generally afford to offer higher rates on new contracts. When yields fall, new rates tend to follow them down.

Insurers also adjust rates based on how much new business they want to write, the length of the term, and their own internal costs. So the rate you see quoted on a given day reflects more than just where bonds happen to be trading.

Rates differ by term and by company

A few practical things follow from how this works:

• Rates differ by term. A three-year guarantee and a seven-year guarantee from the same insurer usually carry different rates.
• Rates differ by company. Two insurers can offer meaningfully different rates for the same term on the same day.
• Rates can change without much warning. Insurers often announce new rates with only a short notice period.

None of this is unusual or a sign that something is wrong with the product. It's just how a rate tied to bond markets and insurer appetite behaves.

Once you lock it in, it's locked

The one point worth separating from all of this: once you lock a rate, it's guaranteed for the term you chose. Changes that happen after that apply to new buyers, not to you.

Once you lock a rate, it's guaranteed for the term. Changes after that apply to new buyers, not to you.

That distinction is why timing comes up so often in conversations about fixed annuities. If you already know you're going to move money into one, for example because a CD is maturing or you're retiring soon, it's worth knowing where rates stand today rather than after the next adjustment. Some insurers will also hold a quoted rate for a period while an application and transfer are being processed. Asking how that works before you start is a reasonable thing to check.

A rate still has to fit your situation

None of this means rushing into a decision because a rate looks attractive today. A rate that looks good on paper still has to fit your timeline, your need for access to the money, and the strength of the company standing behind the guarantee. Rate movement is one factor among several, not the only thing to weigh.