The two Roth 5-year rules — and why you can't undo a conversion

Ask most people about "the Roth 5-year rule" and you'll get a mash-up of two separate rules that happen to share a number. They govern different things, start their clocks on different events, and matter to different people. Here's each one, plainly.

Rule 1: the 5-year clock for tax-free earnings

Withdrawals of earnings from a Roth IRA are income-tax-free only if it has been at least five tax years since your first-ever Roth IRA contribution and you meet a qualifying condition (most commonly, being at least 59½). This is a single clock per person. It starts with your first Roth contribution or conversion and never resets — open a Roth with even a small amount and the clock is running for all your future Roth earnings.

Your original contributions and converted principal come out tax-free at any time (they were already taxed). It's the growth on top that this rule protects. For someone who has held a Roth for years, this clock is long satisfied and isn't a concern. For someone opening their first Roth via a conversion late in life, it's worth knowing that the earnings portion isn't automatically tax-free on day one.

Rule 2: the 5-year clock for penalty-free access to a conversion

This is the one that trips up early retirees. Each conversion has its own separate 5-year clock. If you withdraw a converted amount before age 59½ and within five years of that specific conversion, you owe a 10% penalty on the converted portion — even though you already paid income tax when you converted it.

Because every year's conversion starts its own clock, someone running a "Roth conversion ladder" (converting a chunk each year to live on in early retirement) has several clocks ticking at once, and needs to track which converted dollars are seasoned enough to touch penalty-free.

Rule 1 is about tax on earnings. Rule 2 is about the 10% penalty on converted principal. They are not the same clock.

Who each rule actually affects

• Over 59½: Rule 2 doesn't apply at all — the penalty is tied to the under-59½ age test. Since most people doing conversion planning are in their 60s or 70s, the conversion-penalty clock usually never bites. Rule 1 may still matter if this is your very first Roth.
• Under 59½ (the early-retiree ladder): Rule 2 is essential. Plan to leave each year's converted amount untouched for five years, or line up other money to bridge the gap. This is the classic reason a 52-year-old doing a conversion ladder needs to think years ahead.

And no, you can't undo a conversion

There used to be an escape hatch called recharacterization — you could reverse a Roth conversion if it turned out to be a mistake (say, the market dropped right after you converted). The Tax Cuts and Jobs Act eliminated recharacterization of conversions, effective 2018. Once a conversion is reported for a tax year, it's permanent.

Plenty of older articles online still describe recharacterizing a conversion — ignore them; that option is gone. The only way "out" of a completed conversion is to withdraw the money, which brings its own tax and (if you're under 59½ and inside Rule 2's window) penalty consequences. Because there are no take-backs, the amount you convert is a decision to get right up front, not to fix later. Confirm the current rules in IRS Publication 590-B.

Educational only, not tax or investment advice. Confirm details in IRS Pub. 590-B or with a CPA. See our disclaimer.