RILAs Explained: Buffers, Floors and the Trade for Capped Gains

Registered index-linked annuities, usually shortened to RILAs, are newer and less familiar than fixed or variable annuities. FINRA notes they are sometimes called "buffer annuities," and they are built around a specific bargain: you accept some risk of loss and a limit on gains in exchange for partial protection when the market falls.

That bargain can make sense for some people, but it is also easy to misunderstand. A RILA can look like a fixed indexed annuity on the surface, yet it can lose money in a way a fixed indexed annuity is designed not to.

This guide explains how RILAs work, where they sit among annuity types and what to ask before buying one. It is general information, not financial, insurance or tax advice.

How a RILA credits returns

According to Investor.gov, a RILA increases or decreases your contract value during the accumulation phase based, in part, on how a specified benchmark, such as a stock index, performs over a set term, for example one year. The insurer credits the result at the end of the term, and you don't know the rate in advance.

The key difference from a fixed indexed annuity is stated plainly by Investor.gov: "unlike a fixed index annuity, you can lose money in a RILA." If the index performs poorly, the credited amount can be negative, and the insurer may deduct money from your contract value. FINRA makes the same distinction: fixed indexed annuities offer a guaranteed minimum rate of return, while RILAs do not.

Instead of a guaranteed minimum, the insurer generally sets parameters that limit both your losses and your gains. The two main loss-limiting tools are buffers and floors.

Buffers and floors: two ways to limit losses

FINRA defines a buffer as the percentage of loss you choose to have the insurance company absorb before you absorb losses beyond that percentage.

FINRA's annuities page (as checked in October 2026) gives this example: if your buffer is 10 percent and the index falls 15 percent, you absorb only a 5 percent loss. The SEC's 2020 indexed annuity bulletin uses a similar illustration, where a 10 percent buffer and a 12 percent index drop leaves you with a 2 percent loss before any surrender charges or other adjustments.

The important point is what happens in a severe decline. A buffer protects you fully against small drops, but in a large drop you take every percentage point of loss beyond the buffer.

A floor works the other way around. FINRA describes it as the maximum percentage loss you are willing to absorb; losses beyond the floor are absorbed by the insurer.

In the same FINRA example (October 2026), if your floor is 10 percent and the index falls 25 percent, your maximum loss is 10 percent. With a floor, you bear small and moderate losses yourself, but your worst case for that term is limited.

Which is better depends on what worries you more. For example, imagine a hypothetical saver who is comfortable with modest dips but wants to rule out a catastrophic year; the floor structure speaks to that concern. Another hypothetical saver who expects ordinary downturns and wants those cushioned might look harder at a buffer. Neither choice is free, which leads to the other side of the bargain.

The price of protection: limits on gains

In return for limiting losses, RILAs limit how much you can earn. FINRA says a buffer or floor "often caps your opportunity for gains," and Investor.gov notes that insurers may place caps on positive gains in return for the downside protection and other costs of offering the annuity.

Investor.gov explains that many RILAs don't charge explicit ongoing fees, but implicit costs show up in those limits, and some products charge explicit fees as well. The SEC's indexed annuity bulletin adds that gains are often measured without the dividends paid by the stocks in the index, and that insurers commonly can change features such as caps from time to time. FINRA likewise warns that buffers and floors may change over time. Caps, participation rates and other crediting limits are covered in more depth in the Costs & Fine Print section of this site.

FINRA also describes RILAs as having "complex structures with similarities to options contracts." That is a signal to slow down and make sure you understand how the features work together, not just one at a time.

RILAs are securities, and that matters

Unlike fixed and fixed indexed annuities, RILAs are securities. Investor.gov explains that they must register with the SEC, which means they come with a prospectus, and FINRA notes they are regulated by the SEC and FINRA in addition to state insurance commissioners.

Two practical consequences follow:

• Read the prospectus. Investor.gov advises reading the contract and any prospectus and making sure they match your understanding. Look for each index option, its buffer or floor, how caps can change and the costs of getting out early.
• Check the seller. FINRA suggests using BrokerCheck to find out whether the person selling a RILA is registered with FINRA, and notes it can also show whether a broker has a history of complaints.

Getting out early can cost more than you expect

RILAs are designed to be held for years. Investor.gov notes that you can lose money if amounts are withdrawn from an investment option before the end of its term, and sometimes if money is withdrawn from the contract before a specified period ends.

Investor.gov also describes contract adjustments, sometimes called interim value adjustments, which can change your value if you withdraw or transfer before the end of a term. These adjustments "are often negative and may significantly lower the value of your annuity," and they come on top of any surrender charge. Investor.gov says both RILAs and registered market value adjustment annuities contain these features.

Where RILAs fit on the risk spectrum

Investor.gov ranks the four main types of deferred annuities by risk: fixed, fixed indexed, RILA and variable. It describes RILAs as riskier than fixed and fixed indexed annuities, with more potential return, and notes that some index options inside a RILA may even carry unlimited risk. Its comparison table describes the typical RILA buyer as having a long-term time horizon, moderate to high risk tolerance depending on the limit on index losses, and looking to grow assets in exchange for some risk.

Questions to ask before you buy

• For each index option, is the protection a buffer or a floor, and what is the percentage?
• What is the cap or other limit on gains, and can the insurer change it after I buy? How often?
• Are dividends excluded from the index return?
• What is the surrender charge schedule, and how is an interim value adjustment calculated?
• Are there any explicit fees, including for optional riders?
• How does this fit with the rest of my savings, and could I need the money before the term ends?

For personal help, contact your state insurance department or a licensed financial professional, and verify any securities seller on FINRA BrokerCheck. If you feel rushed, that is a reason to pause; the NAIC warns that many people have been harmed by annuity scams and suggests contacting your state insurance department if you think you were misled.

Key takeaways

• A RILA's value can go down as well as up based on an index; unlike a fixed indexed annuity, you can lose money.
• A buffer absorbs the first losses; a floor caps your maximum loss. Each comes with limits on gains.
• Caps and other features may change over time, and dividends are often excluded from index returns.
• RILAs are securities: read the prospectus and check the seller on BrokerCheck.
• Leaving early can trigger surrender charges plus interim value adjustments that are often negative.

Sources - U.S. Securities and Exchange Commission (Investor.gov), Annuities — https://www.investor.gov/introduction-investing/investing-basics/investment-products/annuities - U.S. Securities and Exchange Commission (Investor.gov), Updated Investor Bulletin: Indexed Annuities — https://www.investor.gov/introduction-investing/general-resources/news-alerts/alerts-bulletins/investor-bulletins/updated-investor-bulletin-indexed-annuities - FINRA, Annuities — https://www.finra.org/investors/investing/investment-products/annuities - FINRA, The Complicated Risks and Rewards of Indexed Annuities — https://www.finra.org/investors/insights/complicated-risks-and-rewards-indexed-annuities - National Association of Insurance Commissioners, What You Should Know Before Buying an Annuity — https://content.naic.org/sites/default/files/consumer-what-to-know-before-buying-annuity.pdf