Required Minimum Distributions Explained: What Retirees Get Wrong Every Year

My uncle Phil forgot his RMD two years in a row. The first year he thought the account custodian would handle it automatically; they didn’t. The second year he just plain forgot, buried in grandson babysitting and a kitchen remodel. By the time the IRS letters arrived, he owed $4,200 in penalties on top of the income tax he’d skipped. Phil’s tale isn’t rare: a Vanguard analysis found that 6.7% of RMD-age IRA holders took no withdrawal at all in 2024, racking up an average missed distribution of $11,600 (Vanguard). That’s over half a trillion dollars of retirement accounts sitting exposed to avoidable penalties.

The single factor that most often flips an RMD from a costly headache into a no-drama routine is automation. Set it, and the IRS, your tax preparer, and Medicare don’t send a cascade of angry mail. Don’t set it, especially when you hold multiple accounts at different institutions, and you join the 55% of people who miss a distribution one year and repeat the mistake the next. The rules aren’t complicated once you know them; what follows walks through every common trap, with exact thresholds, so you can stop making them.

The Single Most Expensive RMD Mistake You Can Make

The costliest required minimum distributions mistake is not miscalculating the amount. It’s never taking the distribution at all. The IRS documents a penalty of 25% of the shortfall, and that penalty can stretch across multiple accounts. In raw dollar terms, the 585,000 IRA holders who miss RMDs each year face a potential penalty pool reaching $1.7 billion, according to Vanguard estimates scaled across all RMD-age IRA owners (Vanguard, 2025). The numbers get grimmer for small balances: among those with under $5,000 in an IRA, 56.8% missed the RMD, accounts so tiny people forget they exist.

Making matters worse, missing one year often becomes a pattern. Vanguard’s data shows 55% of those who failed to take an RMD in one year also skipped it the following year. That’s not a one-off oversight; it’s a systemic planning void. SECURE 2.0 did lower the penalty from the old 50% cliff to 25% (and to 10% if you correct within the two-year window), but the dollar amounts remain punishing, especially when the missed distribution itself gets taxed as ordinary income on top of the penalty.

How RMD Calculation Errors Slip Through, and Where to Double-Check

Getting the number right sounds easy: divide your December 31 prior-year balance by the IRS life expectancy factor. Yet retirees routinely use the wrong table (the Joint Life table instead of the Uniform Lifetime Table), the wrong balance (January 1 instead of December 31), or the wrong birth date for determining their age. For IRAs you can aggregate your balances and take one combined distribution, but 401(k) and 403(b) plans require a separate calculation and withdrawal from each one. The 2022 updated Uniform Lifetime Table gave slightly larger divisors, reducing RMDs modestly; using the old table overstates your RMD and can inflate your tax bill unnecessarily.

Inherited accounts present their own trap. Non-spouse beneficiaries under the 10-year rule often mistakenly believe there’s no annual RMD if the original owner died after their required beginning date. That’s wrong. A life-expectancy-based RMD must still be taken in years 1 through 9, with the remainder distributed by year 10. Getting this wrong triggers a 25% penalty on missed beneficiary RMDs, and the IRS rarely treats it as a minor oversight.

The First-Year Deadline Trap: April 1 Is Not the Gift It Looks Like

Many new retirees hear “you have until April 1 of the year after you turn 73 to take your first RMD” and treat it as a full extra year’s reprieve. It isn’t. That April 1 grace applies only to the first required distribution; the second one must still be taken by December 31 of the same calendar year. If you delay your first RMD to April 1, you’ll end up with two taxable distributions in one tax year, often pushing you into a higher bracket, triggering Medicare IRMAA surcharges, and making more of your Social Security benefits taxable. For someone who turned 73 in 2025, waiting until April 1, 2026 to pull that first RMD means stacking it with the 2026 RMD by December 31, 2026, a double hit that can easily lift a couple’s modified adjusted gross income above the $202,000 IRMAA threshold (2026 figures).

If you have the cash flow to take the first RMD in the year you turn 73, do it. That single decision keeps your tax years clean and prevents an accidental income spike. The December 31 deadline for all subsequent years is ironclad, but setting automatic RMD withdrawals for mid-December gives you a buffer without risking a January calendar foul-up.

Spouse, Still-Working, and Roth Rules That Keep Tripping People Up

The biggest misconception here: a married couple filing jointly can combine RMDs. They absolutely cannot. Each spouse must take their own RMD from their own IRAs and retirement plans; there’s no “family RMD.” If one spouse fails to take theirs, the penalty hits, even if the other spouse took more than enough from separate accounts. Similarly, a retiree still working past age 73 may be exempt from RMDs for their current employer’s 401(k), but only if they don’t own more than 5% of the company. This exception never applies to IRAs or accounts from previous employers (IRS).

Roth 401(k) accounts, which used to be subject to lifetime RMDs, gained a significant change in 2024. Thanks to SECURE 2.0, designated Roth accounts in workplace plans are now exempt from RMDs during the account owner’s lifetime, matching Roth IRAs. Inherited Roth 401(k)s still carry beneficiary RMD obligations, though. That distinction, owner alive means no RMD; beneficiary means yes RMD, is so new that many plan providers haven’t updated their automatic distribution programming. Double-check before assuming the custodian got the memo.

Tax-Smart RMD Moves: QCDs, Roth Conversions, and Where to Reinvest

One of the most underused strategies is the qualified charitable distribution (QCD). You can direct up to $105,000 (2026 indexed amount) from your IRA directly to a qualified charity, and it counts as your RMD without adding a dollar to your adjusted gross income. According to CNBC’s coverage of common RMD errors, sending the distribution directly to charity keeps the income off your tax return entirely, which is the most direct way to avoid Medicare IRMAA surcharges (CNBC). The QCD must come directly from the IRA custodian to the charity by December 31; you cannot take the distribution yourself and then donate it.

Roth conversions are another tool, but they cannot replace an RMD. The RMD must be satisfied first, in cash, before you can convert any remaining balance. Trying to convert the RMD amount triggers an excess contribution. Timing matters too: if you’re already facing a high-income year from an April 1 double-RMD, a Roth conversion on top can push you over IRMAA thresholds, so it’s generally better to execute conversions in lower-income years before RMDs start as part of a broader retirement withdrawal strategy. Once the RMD cash is in hand, simply parking it in a taxable brokerage account and forgetting it is often suboptimal; routinely rebalancing and tax-loss harvesting can offset some of the tax damage. For charitably inclined retirees, the QCD route remains the cleanest option.

Fixing a Missed RMD: The Waiver Process and What Realistically Happens

The fix starts with Form 5329 and a well-crafted reasonable-cause letter. The IRS reduced the automatic penalty from 50% to 25% (and to 10% if corrected within two years) under SECURE 2.0, but the waiver process still requires showing that the failure was due to reasonable error, illness, natural disaster, custodian error, or plain misunderstanding, and that you took the corrective distribution promptly. The Self Correction Program (IRS) can be used for certain retirement plan RMD failures directly with the plan sponsor, while IRA owners must file for a waiver and hope the IRS accepts their explanation.

In practice, the IRS grants penalty waivers for first-time mistakes far more often than they deny them, provided you act quickly and supply documentation. Anecdotal reports from tax professionals suggest a waiver success rate above 80% for honest, isolated errors, especially if the missed amount is small relative to the total IRA balance. Repeated misses, however, signal negligence and are much less likely to get waived. Never let a missed RMD sit unaddressed: file the correction the same tax year you discover it, pay the tax, and explain thoroughly.

7 Steps to a Bulletproof RMD Strategy

Most of the carnage in RMD land is avoidable with a straightforward annual routine. Here’s the sequence that keeps Phil-like disasters from happening to you.

1. Confirm your RMD start age. If you were born in 1951–1959, your first RMD age is 73. Born in 1960 or later, it’s 75. Mark the calendar for April 1 of the year after that birthday, but aim to take the first distribution in the year you reach that age.
2. List every retirement account. Traditional IRAs, SEP IRAs, SIMPLE IRAs, 401(k)s from former employers, 403(b)s, inherited IRAs, each has its own RMD status. Employer plans at a current job may be exempt if you’re still working and own less than 5%.
3. Calculate each RMD with precision. For IRAs, use the IRS Uniform Lifetime Table (2022 version) and the December 31, 2025 balance for 2026 distributions. For inherited accounts, use the correct life expectancy table based on beneficiary type. Roll IRAs together if it simplifies, but never aggregate 401(k)s.
4. Automate the withdrawal. Set up a systematic distribution for November or early December to leave room for processing delays. If you give to charity, consider a direct QCD instead of taking the cash yourself, up to $105,000 counts as your RMD with zero federal tax.
5. Manage tax withholding. RMDs are subject to federal income tax withholding (default 10% unless you elect otherwise), and many states treat IRA distributions as income too. Adjust withholding to avoid underpayment penalties, but do not over-withhold so much that you strain current cash flow needlessly.
6. Coordinate with your employer plan. If you’re still working past 73, confirm with HR whether your 401(k) requires RMDs. If you own 5% or more of the business, you lose the exemption. This one oversight can silently trigger a penalty on what you thought was protected.
7. Document and verify annually. Keep a folder with screenshots of account balances as of December 31, RMD calculation worksheets, distribution confirmations, and any QCD acknowledgement letters. If an error slips by, you’ll have the evidence to support a penalty waiver.

Frequently Asked Questions

What is the required beginning date for RMDs in 2026?

For most IRA owners, RMDs must start by April 1 of the year after you reach age 73 (if born 1951–1959) or 75 (if born 1960 or later). The first RMD can be taken in the year you hit that age; waiting until April 1 triggers two RMDs in the same calendar year.

What happens if I miss my RMD deadline entirely?

The IRS imposes a 25% excise tax on the amount that should have been withdrawn, reduced to 10% if you correct the mistake within two years and file Form 5329. You’ll also owe the ordinary income tax on the distribution once it is finally taken.

Can I combine RMDs from my IRA and my 401(k)?

No. You can aggregate RMDs from multiple traditional IRAs and take the total from one account, but 401(k) and 403(b) RMDs must be calculated and distributed separately from each employer plan. A current employer’s 401(k) may be exempt if you’re still working, but that rule doesn’t apply to IRAs.

Are Roth 401(k)s subject to RMDs during my lifetime?

No longer. Starting in 2024, designated Roth accounts in 401(k) and 403(b) plans are exempt from lifetime RMDs, matching Roth IRAs. However, inherited Roth 401(k)s still require beneficiary RMDs, so the rule shift only applies while the original owner is alive.

How does a qualified charitable distribution (QCD) work for RMDs?

You can instruct your IRA custodian to send up to $105,000 per year directly to a qualified charity; that amount counts toward your RMD and is excluded from your taxable income. QCDs work for traditional IRAs and inherited IRAs, not for 401(k)s unless the plan separately permits them.

What is the penalty for not taking an RMD and how can I get it waived?

The penalty is 25% of the shortfall (10% if corrected within two years). To request a waiver, file Form 5329 with a reasonable-cause explanation, include details of why you missed it, proof you corrected it, and evidence it won’t recur. The IRS frequently grants first-time penalty relief.

Can I avoid RMDs by converting my IRA to a Roth?

You cannot use a Roth conversion to satisfy an RMD for the current year; the RMD must be withdrawn first. Converting after that can reduce future RMDs because Roth IRAs have no lifetime distribution requirement, but the conversion itself is taxable in the year you do it, so whether a Roth conversion makes sense depends on your tax bracket today versus later.