Buffer ETFs can work as part of a retirement portfolio, but they are not a complete retirement strategy on their own

A buffer ETF is designed to limit your losses in down years while letting you keep some gains in up years. The trade-off is that you also give up some of the larger gains you would get from a regular stock fund. Whether that trade-off makes sense for retirement depends on your age, how much you have saved, and how much market swings bother you.

Buffer ETFs are most useful for people who are already retired or very close to it — when you need the money soon and a big market drop could force you to sell at the worst time. They are less useful for someone in their 30s or 40s who has decades before they need the money, because missing out on years of growth compounds into a real cost.

Key Takeaways

  • Buffer ETFs protect against losses in bad years but cap your gains in good years, which costs you growth over decades.
  • They make more sense the closer you are to retirement, because you have less time to recover from market drops.
  • A buffer ETF alone will not provide enough growth for most retirement accounts — they work best mixed with regular stock or bond funds.
  • The cost of the protection (lower gains) is highest when you are young and should be lowest when you are near or in retirement.

How buffer ETFs work and what they cost you

Buffer ETFs use options contracts to create a floor and a ceiling on your returns. In a typical setup, you might lose no more than 10 or 15 percent in a down year, but you also keep no more than 15 or 20 percent in an up year. The exact numbers depend on which buffer ETF you own.

The real cost is what you miss in strong market years. If the stock market gains 25 percent and your buffer ETF caps gains at 15 percent, you have given up 10 percentage points that year. Over 30 years, that compounds into a much smaller nest egg. A person who starts with $100,000 and gets 7 percent annual returns ends up with roughly $760,000. The same person with 5 percent returns (the difference a buffer might cost) ends up with roughly $430,000. That is a difference of $330,000.

You pay for this protection through the fund's expense ratio — the annual fee charged to own it. Buffer ETFs typically cost 0.60 to 0.95 percent per year, compared to 0.03 to 0.20 percent for a plain stock index fund. That fee difference alone eats into your returns before the buffer even kicks in.

When buffer ETFs make sense in retirement planning

Buffer ETFs are most useful in the five to ten years before you retire and in the first years of retirement itself. This is when a sudden 30 or 40 percent market drop could force you to sell stocks at the worst time to cover living expenses. If the market crashes the year you retire, you lock in losses instead of waiting for recovery.

A person who is 60 years old and plans to retire at 65 might use a buffer ETF for part of their portfolio — perhaps 20 to 40 percent — while keeping the rest in regular stock and bond funds. This way, if the market drops sharply at year 63 or 64, the buffer ETF limits the damage to that portion of their account.

Buffer ETFs also make sense for people who panic-sell during downturns. If you know you will sell everything when the market drops 20 percent, a buffer ETF that limits losses to 10 percent might keep you from making that mistake. The peace of mind has real value if it prevents you from locking in losses.

Why buffer ETFs are expensive for younger savers

Someone in their 30s or 40s should almost never use a buffer ETF as a core holding. The reason is simple: you have time to recover from market drops, and that time is worth far more than the protection the buffer provides.

A market crash in 2024 that drops your account 30 percent is painful, but if you are 35 years old, you have 30 years for the market to climb back and go higher. History shows that every major market drop has eventually been followed by recovery and new highs. The younger you are, the more certain you can be that you will see that recovery.

Using a buffer ETF during those decades means accepting permanently lower returns just to avoid temporary pain. That is a bad trade for someone with a long time horizon. A person who is 35 and uses a buffer ETF instead of a regular stock fund might end up with $200,000 to $300,000 less at retirement, depending on market conditions.

How to use buffer ETFs as part of a larger retirement strategy

If you do use a buffer ETF, treat it as one piece of a diversified portfolio, not the whole thing. A common approach for someone in their 50s might be: 30 percent buffer ETF, 40 percent regular stock index fund, and 30 percent bond fund. This gives you some protection without giving up all growth.

Another option is to use buffer ETFs only for the money you plan to spend in the next five years. Keep money you will not need for ten or more years in regular stock funds. This way, you get protection where you need it most — on the money that is closest to being spent — and growth where you have time to recover.

You can also use buffer ETFs as a way to stay invested during market drops. Some people who own regular stock funds sell everything when the market falls 20 percent, locking in losses. If a buffer ETF would have kept you invested instead, the protection paid for itself even if it costs you some gains in good years.

Comparing buffer ETFs to other ways to reduce risk

Buffer ETFs are not the only way to limit losses as you approach retirement. A traditional approach is to shift gradually from stocks to bonds. A 55-year-old might own 70 percent stocks and 30 percent bonds. A 65-year-old might own 50 percent stocks and 50 percent bonds. Bonds do not protect you from losses the way a buffer does, but they are less volatile and usually cost less to own.

Another option is a target-date fund, which automatically shifts from stocks to bonds as you approach a specific retirement year. These funds do the rebalancing for you and typically cost 0.10 to 0.20 percent per year — much less than a buffer ETF.

A third option is to simply hold some cash or short-term bonds separate from your stock investments. If the market crashes, you have money set aside to live on without selling stocks at the worst time. This costs you nothing except the opportunity cost of holding cash instead of stocks.

The math on buffer ETF returns over time

To understand the real cost, look at what happens over a full market cycle. Imagine two investors, each starting with $200,000 at age 50. One uses a buffer ETF that limits losses to 10 percent and gains to 15 percent. The other uses a regular stock index fund.

Year 1: Market gains 20 percent. Buffer investor gets 15 percent ($30,000). Stock investor gets 20 percent ($40,000). Difference: $10,000.

Year 2: Market drops 25 percent. Buffer investor loses 10 percent ($27,000). Stock investor loses 25 percent ($50,000). Buffer investor is ahead by $23,000 this year.

Year 3: Market gains 15 percent. Buffer investor gets 15 percent ($33,000). Stock investor gets 15 percent ($33,000). No difference.

After three years, the buffer investor has $236,000 and the stock investor has $223,000. The buffer investor is ahead. But this assumes the market will drop 25 percent in year 2. If the market instead gains 15 percent all three years, the buffer investor ends up with $269,000 and the stock investor with $280,000. The cost of waiting for a crash that might not come is real.

Frequently Asked Questions

Can I use a buffer ETF for my entire retirement portfolio?

You can, but it is not recommended unless you are already retired or within a few years of it. A buffer ETF alone will not provide enough growth over decades. Most financial advisors suggest using buffer ETFs for 20 to 40 percent of your portfolio if you use them at all, combined with regular stock and bond funds.

Do buffer ETFs work during a major market crash?

Yes, but only up to the buffer limit. If the market drops 40 percent and your buffer is 10 percent, you lose 10 percent instead of 40 percent. However, you also miss the recovery gains if the market bounces back 30 percent — you might only gain 15 percent while the regular stock fund gains 30 percent.

What is the difference between a buffer ETF and a bond fund?

A bond fund typically returns 3 to 5 percent per year with lower volatility. A buffer ETF tries to return 10 to 15 percent in good years while limiting losses to 10 percent in bad years. Bonds are simpler and cheaper; buffer ETFs are more complex but aim for higher returns with less downside.

Should I use a buffer ETF if I am nervous about market drops?

A buffer ETF might help if your nervousness would otherwise cause you to sell everything during a crash. However, consider whether a simpler approach — like holding more bonds or keeping cash on the side — would give you the same peace of mind at lower cost.

Do buffer ETFs have tax advantages for retirement accounts?

No. Buffer ETFs work the same way in a 401(k) or IRA as they do in a regular account. The tax treatment is identical to any other ETF. The only difference is that retirement accounts do not charge capital gains taxes on trades within the account.