Target date funds have real problems, and the short answer to why target date funds are bad is this: they often charge layered fees most investors never notice, they apply the same allocation to everyone retiring in the same year regardless of circumstances, their glide paths follow a schedule the market doesn’t respect, and in taxable accounts they can hand you a tax bill for gains you never cashed in. None of that means you should sell yours tomorrow. It means you should know what you own.
The Fees Sit in Layers
A target date fund is a fund that holds other funds. You buy one product, but inside it sit several separate mutual funds or index funds, each with its own expense ratio. You pay a management fee on the outer wrapper and, indirectly, the fees on every underlying fund it owns. The SEC requires that second layer to show up in the prospectus fee table as “Acquired Fund Fees and Expenses,” but few investors read fee tables, and fewer still add up what the layers come to.1Securities and Exchange Commission. Final Rule – Fund of Funds Investments (Release No. 33-8713)
The pricing has split sharply. Index-based target date funds from large providers can run 0.08% to 0.15% a year, which is close to holding the underlying index funds directly. Actively managed suites still commonly charge 0.40% to 0.80% or more. Most employer plans offer only one target date family, and participants have no say in which one. If your plan picked a higher-cost active suite, your only workaround is to assemble your own allocation from the other funds the plan offers.
The percentages sound trivial and aren’t. On a $500,000 balance, a 0.50% difference in annual fees costs $2,500 a year before you count the compounding lost on that money. Over 25 years of continued contributions and growth, the drag can easily exceed $100,000.
There’s also a cost that never appears in the fee table at all. Every time the fund rebalances or shifts along its glide path, it buys and sells underlying holdings and pays commissions and bid-ask spreads. Those costs come out of fund returns rather than showing up as a disclosed fee, so they stay effectively invisible. Higher-turnover funds eat more of your return this way, and the annual rebalancing built into a target date design guarantees some ongoing trading.
One Allocation for Everyone Retiring That Year
The entire investment thesis of a target date fund rests on a single input: the year you plan to retire. Two people targeting 2050 get the same portfolio whether one has a government pension, rental income, and no debt, while the other carries a mortgage, no other savings, and a spouse in poor health. They have very different capacities for investment risk, and the fund treats them identically.
This matters most at the edges. If you hold significant assets outside the fund, you may want more equity exposure inside it because your overall picture is already conservative. If this account is nearly everything you have, the default allocation might be too aggressive or too conservative depending on everything else going on in your life. A target date fund cannot know about your home equity, your spouse’s 401(k), your expected Social Security benefit, or your health. It doesn’t adjust when you divorce, inherit money, or take on a business loan.
What you get is a portfolio that’s generically acceptable for an average person who doesn’t actually exist.
The Glide Path Follows a Schedule, Not the Market
The defining feature of a target date fund is its glide path: a predetermined schedule that gradually sells stocks and buys bonds as the target year approaches. The schedule is set when the fund is designed, published in the prospectus, and followed mechanically. If the calendar says it’s time to cut equity exposure by 5%, that sale happens whether stocks are at record highs or in the middle of a crash.
In 2022, that mechanical approach punished investors near retirement. Stocks and bonds both dropped by double digits at the same time, and conservative target date funds designed for near-retirees lost more than 15% of their value. The glide path had already moved these investors heavily into bonds, which were supposed to be the safe part of the portfolio, and those bonds got hit by rising interest rates. The fund couldn’t pause or wait. It followed the schedule.
“To” Versus “Through” Retirement
Glide paths don’t even agree on when to stop shifting. Some target date funds use a “to retirement” design, meaning the allocation reaches its most conservative point on the target date and then stays fixed. Others use a “through retirement” design, continuing to reduce stock exposure for years or decades after the target date. This is a fundamental choice that shapes how your money is managed across potentially 30 years of retirement, and most investors have no idea which type they own.
A “to” fund might land at roughly 40% stocks on the target date and hold there. A “through” fund might still hold 50% stocks at the target date and keep reducing over the next 10 to 30 years. Neither is inherently better, but owning the wrong one for your situation creates real risk. A “to” fund locks you into a static allocation that might be too conservative for a long retirement. A “through” fund keeps selling stocks during retirement, which can lock in losses during downturns when you’re already drawing down the account. The interaction between withdrawals and falling values is called sequence-of-returns risk, and it’s the biggest threat to a retiree’s financial plan. A rigid glide path cannot navigate it.
Inflation in the Bond-Heavy Years
As the fund shifts into bonds, it becomes more exposed to inflation. Fixed-income investments pay a set amount, and when prices rise faster than those payments, purchasing power erodes. Someone 5 to 10 years from retirement may already have 40% to 60% of their savings in bonds through the glide path. If inflation runs hot during that window, real returns can turn negative while the nominal balance barely moves. The design assumes bonds are safe, but safe from short-term volatility isn’t the same as safe from losing buying power.
Taxes You Didn’t Expect
Most target date fund money sits inside 401(k) plans and IRAs, where capital gains distributions don’t trigger immediate taxes. If yours is in a tax-advantaged account, this section describes a problem you don’t have. In a regular brokerage account, the tax consequences can be genuinely painful.
Federal tax law requires mutual funds to distribute almost all realized capital gains to shareholders each year. When a target date fund rebalances or sells appreciated holdings to meet redemptions, those gains flow through to you even though you never sold a share yourself.2Office of the Law Revision Counsel. 26 U.S. Code 852 – Taxation of Regulated Investment Companies You receive a 1099-DIV and you owe tax on those gains whether the distribution was reinvested or not.3Internal Revenue Service. Mutual Funds (Costs, Distributions, etc.) 4 It’s a tax bill for money you never actually pocketed.
The Vanguard Episode
This risk isn’t theoretical. In 2020 and 2021, Vanguard’s lower-cost institutional target date funds became available to a wave of new investors, which triggered large redemptions from the older, higher-cost Investor share class. To meet those redemptions, the Investor funds sold underlying holdings that had appreciated during the post-pandemic recovery. The gains flowed through to the remaining shareholders, many of whom held shares in taxable accounts. Some funds distributed capital gains exceeding 18% of total value in a single year, with total distribution yields reaching 27% for certain vintages.
The SEC found that Vanguard’s prospectuses were materially misleading because they failed to warn investors about the risk of these elevated distributions. In 2025, Vanguard agreed to pay $106.41 million to the SEC plus $40 million to settle a related class-action lawsuit.4U.S. Securities and Exchange Commission. Vanguard to Pay More Than $100 Million to Resolve Violations Related to Target Date Retirement Funds Investors who stayed in the funds and did nothing wrong got stuck with tax bills they never anticipated. That’s the structural problem with holding these funds in taxable accounts: someone else’s decisions inside the fund create your tax liability.
Wash Sales You Can’t See Coming
Target date funds create a second tax trap. If you sell an individual stock or fund at a loss in your taxable brokerage account, and a target date fund you own in any account buys the same or a substantially identical security within 30 days, the IRS wash sale rule can disallow your loss. Target date funds trade their underlying holdings on a schedule you don’t control, so you have no practical way to coordinate your personal tax-loss harvesting with the fund’s internal trades. Investors managing multiple accounts can trigger wash sale problems without realizing it.
When a Target Date Fund Is Still the Right Call
For all the problems above, target date funds remain the right choice for a specific investor: someone in a 401(k) with limited options who will genuinely never look at or adjust their allocation. The tax problems largely vanish inside a retirement account. If your plan offers a low-cost index-based target date fund under 0.15%, and the realistic alternative is that you will never rebalance anything, the fund is doing real work for you. The problems in this article hit hardest when fees are high, when the fund sits in a taxable account, or when your financial situation is complex enough that a generic allocation leaves money on the table.
What to Use Instead
A Three-Fund Portfolio
The most common alternative is building your own allocation from three low-cost index funds: a U.S. stock index fund, an international stock index fund, and a total bond market index fund. You get the same broad diversification a target date fund provides, but you control the percentages, you rebalance on your own schedule, and the total expense ratio is typically a fraction of even a cheap target date fund. The tradeoff is that you have to do it. You pick the percentages, rebalance once or twice a year, and adjust the stock-to-bond ratio yourself as you age. It takes about an hour a year.
A Robo-Advisor
If you want automated rebalancing with more personalization than a target date fund offers, robo-advisors typically charge 0.25% to 0.50% a year on top of the underlying fund costs. They build a portfolio of index funds or ETFs tailored to your risk tolerance and time horizon, and some offer tax-loss harvesting in taxable accounts, which directly addresses one of the biggest problems with target date funds. The fees run higher than managing three index funds yourself, but the personalization and tax management can justify the cost for larger taxable portfolios.