The IRS gives you a one-time grace period on your first required minimum distribution. You can delay it past December 31 of the year you turn 73 — all the way to April 1 of the following year. Most financial articles treat this as straightforwardly good news. It isn’t. That April 1 extension is one of the most reliably misunderstood features in the retirement tax code, and for many retirees it creates a tax problem worse than the one it delays.
Here’s what actually happens, why the double-distribution year catches people off guard, and how to think about whether taking that extension ever makes sense.
How RMDs Work — The Quick Version
Required minimum distributions are the IRS’s mechanism for collecting taxes on money that grew tax-deferred for decades. You put pre-tax dollars into a traditional IRA or 401k, they compounded without taxation, and now the government wants its share. Starting at age 73 (under the SECURE 2.0 Act), you must withdraw a minimum amount each year from traditional IRAs and most employer plans.
The amount is calculated by dividing your account balance as of December 31 of the previous year by a life expectancy factor from the IRS Uniform Lifetime Table. For a 73-year-old, that factor is 26.5, which means the RMD equals roughly 3.77% of the previous year-end balance. At 80, the factor drops to 20.2 — the withdrawal percentage climbs as you age.
Miss the deadline, and the penalty is 25% of the amount you failed to withdraw. The SECURE 2.0 Act reduced this from the prior 50% penalty, but 25% is still steep. If you missed a $15,000 RMD, the penalty is $3,750 — on top of ordinary income tax on the distribution itself.
The April 1 Extension — and Why It’s Usually a Trap
The IRS allows a one-time extension: if you’re taking your first RMD (for the year you turn 73), you can delay it until April 1 of the year after you turn 73 rather than taking it by December 31 of your turning-73 year.
Sounds helpful. Here’s the trap.
If you delay your first RMD to April 1 of year two, you still have to take your second RMD by December 31 of that same year. Both distributions land in the same calendar year — which means both are taxable income in the same year. Depending on your income, stacking two RMDs in one year can push you into a higher federal tax bracket, trigger or increase taxation of your Social Security benefits, and potentially trigger IRMAA — the income-related Medicare Part B and Part D surcharge that adds several hundred dollars per month to your premiums based on income from two years prior.
The IRMAA connection is the one that blindsides people most often. Medicare Part B premiums are based on your modified adjusted gross income from two years back. If you stack two RMDs into year two and your income spikes, you may spend years three and four paying elevated Medicare premiums that you could have avoided by simply taking your first RMD on schedule in year one. How IRMAA works and what income thresholds trigger it covers the specific brackets — a two-RMD year can easily push a retiree into the next IRMAA tier even if total withdrawals are modest.
The practical conclusion: for most retirees, taking the first RMD in the year you turn 73 (by December 31, not waiting for April 1) is the better tax outcome. The extension is occasionally useful — specifically when a retiree had unusually high income in their turning-73 year (perhaps from a business sale or Roth conversion) and projects lower income in the following year. Outside of specific high-income-year scenarios, avoiding the double-distribution year is usually worth more than the extension.
What Happens If You Actually Miss the Deadline
Miss your RMD deadline — either the December 31 or the April 1 first-year deadline — and you owe a 25% excise tax on the shortfall, not on the full distribution. The shortfall is the amount you should have withdrawn minus what you actually withdrew.
Say your RMD was $18,000 and you took $0. Shortfall: $18,000. Penalty: $4,500 — plus you still owe ordinary income tax on the $18,000 you’ll eventually take out. The penalty is reported on IRS Form 5329, Part IX.
There’s a correction path. The IRS has an automatic waiver process available to taxpayers who correct the missed RMD quickly. As of the current rules, if you take the missed distribution in a timely fashion and file Form 5329 with a written explanation, the IRS typically waives the 25% penalty. The catch is that "timely" isn’t perfectly defined in every case, and there’s no guarantee of automatic waiver — it’s discretionary. The safest approach is not to miss the deadline in the first place.
If you’ve already missed a prior year’s RMD and just realized it, consult a CPA or financial advisor before filing. The correction process for multiple missed years is more complex and sometimes involves a private letter ruling from the IRS.
Which Accounts Are Subject to RMDs
Traditional IRAs: yes. SIMPLE IRAs: yes. SEP IRAs: yes. Traditional 401k, 403b, 457b plans from former employers: yes. Current employer 401k: you can delay RMDs while you’re still working there (the "still working" exception — but only if you own less than 5% of the company and your plan allows it). Roth IRAs: no RMDs during the owner’s lifetime, which is one of the clearest structural advantages of Roth accounts. Inherited IRAs: different rules apply — generally a 10-year depletion requirement for most non-spouse beneficiaries.
If you rolled a 401k from a former employer into an IRA at retirement, that balance is now subject to IRA RMD rules from age 73 forward. The decision to roll a 401k into an IRA has RMD implications that don’t show up until a decade later — the IRA structure gives you more control over investment selection but doesn’t let you use the still-working exception that your current employer’s plan might permit.
The Aggregation Rules: You Don’t Take an RMD From Each Account
If you have multiple traditional IRAs, you calculate the RMD for each account separately — but you can withdraw the total amount from any one or combination of your IRAs. You don’t have to pull proportionally from every account.
This matters for planning. If you have one IRA with better investment options and lower expenses, you can take the full RMD from that account while leaving higher-growth positions undisturbed in another IRA. Alternatively, if one account holds more volatile positions you’d rather not liquidate at an inopportune time, you can draw the RMD from a more stable account.
401k accounts don’t aggregate with IRAs. If you have both a traditional IRA and an old 401k at a former employer, you calculate and withdraw the RMD from the 401k separately — you can’t satisfy both by pulling extra from the IRA. This is one reason people often roll old 401k balances into an IRA before RMDs begin: consolidation simplifies the calculation and gives you aggregation flexibility.
RMDs and Social Security: The Invisible Tax Interaction
Your RMD increases your modified adjusted gross income — and that directly affects how much of your Social Security benefit gets taxed. At a combined income (MAGI plus half your Social Security) above $34,000 for single filers or $44,000 for joint filers, up to 85% of Social Security benefits become taxable. A large RMD can push you well above that threshold.
I spent 30 years as a Warning Coordination Meteorologist at the National Weather Service. We built every forecast around probability distributions — not the most likely outcome, but the full range. I apply that same framing to retirement tax planning, and the RMD-to-Social Security interaction is one of the most underappreciated probability tails in retirement finance. A retiree who projects $20,000 in Social Security and $15,000 in RMDs may not realize they’re pushing an additional $12,000 of Social Security into taxable status because of where combined income lands. How Social Security benefits become taxable based on provisional income is the specific calculation most people should run before their first RMD year rather than after.
The QLAC Strategy for Reducing RMDs
A Qualified Longevity Annuity Contract (QLAC) allows you to use a portion of your IRA balance to purchase a deferred annuity — and that money is excluded from your RMD calculation until the annuity begins paying out. The current QLAC limit is $200,000 (as of the most recent IRS guidance). If you have a $600,000 IRA and put $200,000 into a QLAC, your RMD is calculated on $400,000 — meaningfully smaller each year until the QLAC payments start.
This strategy makes most sense for retirees who don’t need their full RMD for living expenses, are concerned about longevity risk, and want to reduce taxable income in their early retirement years. The full QLAC analysis — including break-even ages and the three-layer tax cascade covers when this strategy works and when it doesn’t. The short version: QLACs work well for healthy retirees with significant IRA balances who don’t need every dollar of their RMD.
Qualified Charitable Distributions: The Most Efficient RMD Option Available
If you’re charitably inclined and over 70½, a Qualified Charitable Distribution (QCD) lets you send money directly from your IRA to a qualified charity — and it satisfies your RMD without the distribution ever appearing as taxable income. The annual QCD limit is $105,000 per person (indexed to inflation).
This is the most tax-efficient way to give to charity in retirement. A $10,000 QCD reduces your RMD and reduces your AGI by $10,000 — compared to taking the RMD, paying income tax on it, and then deducting the charitable contribution (which only works if you itemize and is capped by AGI limits). The QCD bypasses all of that. The money never hits your income, which means it doesn’t increase Social Security taxability, doesn’t trigger IRMAA, and doesn’t push you into a higher bracket. For charitably minded retirees, this is not optional knowledge.
To plan your first RMD year with precision, the IRS RMD page has the current Uniform Lifetime Table and worksheets for calculating your exact required amount. And for a comprehensive framework covering the full range of IRA distribution strategies — RMDs, QCDs, Roth conversions, and inherited IRA rules — a comprehensive IRA distribution guide covers the mechanics in the kind of detail that a conversation with a financial advisor can’t always cover in one sitting. And if you’re working through the coordination between RMDs, Social Security timing, and Medicare premiums in the years leading up to 73, a retirement income planning strategy book built around withdrawal sequencing and tax efficiency is the kind of reference that earns its shelf space.