Required Minimum Distribution (RMD) Calculator

What Is a Required Minimum Distribution (RMD)?

A Required Minimum Distribution (RMD) is the minimum amount the IRS requires you to withdraw each year from your pre-tax retirement accounts — Traditional IRAs, 401(k)s, 403(b)s, SEP IRAs, and SIMPLE IRAs — once you reach the required beginning date. You've been deferring taxes on this money for decades; the RMD rules ensure you eventually withdraw and pay those taxes during your lifetime.

The SECURE 2.0 Act (signed December 2022) changed the RMD starting age to 73 for anyone born between 1951 and 1959, and 75 for those born in 1960 or later. If you turned 72 before 2023, you already started RMDs under the old rules and continue under them. Roth IRAs are exempt from RMDs during the original owner's lifetime — one of the key advantages of Roth accounts.

Failing to take your full RMD results in a steep excise tax — historically 50% of the amount you should have withdrawn but didn't. SECURE 2.0 reduced this to 25% (and 10% if corrected promptly), but it's still a significant penalty. RMDs are not optional.

How RMDs Are Calculated

The IRS uses life expectancy factor tables to determine your RMD. The standard table for most account owners is the Uniform Lifetime Table (IRS Publication 590-B). The formula is simple:

RMD = Account Balance (Dec 31 prior year) ÷ IRS Life Expectancy Factor

The life expectancy factor decreases each year as you age, meaning your RMD percentage increases over time. At 73, the factor is 26.5, so your RMD is roughly 3.77% of your balance. At 80, the factor drops to 20.2 — about 4.95% of your balance. At 90, the factor is 12.2 — about 8.2% of your balance.

There's one exception to the Uniform Lifetime Table: if your sole beneficiary is your spouse and they are more than 10 years younger than you, you can use the Joint Life Expectancy Table, which produces a lower RMD (longer life expectancy factor). This can meaningfully reduce the required withdrawal in early RMD years.

IRS Uniform Lifetime Table (Selected Ages)

Here are the life expectancy factors from the updated IRS Uniform Lifetime Table (effective 2022, per IRS regulations implementing SECURE Act changes):

RMD Strategy: Managing the Tax Impact

RMDs are taxed as ordinary income — added to Social Security, pension income, and any other income for the year. Large RMDs can push you into higher tax brackets, increase Medicare IRMAA surcharges, and make more of your Social Security benefits taxable. Strategic planning can reduce this burden significantly:

Roth conversions before RMD age. The most powerful strategy is converting Traditional IRA funds to Roth before you're required to take RMDs. Every dollar converted reduces future RMD balances. If you retire at 62 but don't start Social Security until 70, the years 62–72 are often a golden window — low income, low tax brackets, ideal for conversions.

Qualified Charitable Distributions (QCDs). If you're 70½ or older and charitably inclined, QCDs allow you to donate up to $105,000/year (2024, indexed for inflation) directly from your IRA to a qualified charity. The amount counts toward your RMD but is excluded from taxable income. A $20,000 QCD saves you income tax on $20,000 — at a 22% rate, that's $4,400 in tax savings while achieving your charitable goals. This is one of the most tax-efficient strategies available to retirees.

Aggregate IRAs for distribution flexibility. You can take your total Traditional IRA RMD from any one of your Traditional IRAs — you don't have to take equal amounts from each account. This flexibility lets you strategically draw from accounts with the best performance, lowest basis, or most appropriate asset allocation. 401k plans, however, must each have their RMD taken separately.

Invest excess RMDs if not needed. You're required to withdraw the RMD, but you're not required to spend it. If you don't need the funds for living expenses, simply reinvest the after-tax amount in a taxable brokerage account. You still pay tax on withdrawal, but the money continues working for you — and your heirs receive a stepped-up basis on taxable investments, potentially eliminating capital gains taxes on growth.

RMD Deadline and First-Year Rules

The standard RMD deadline is December 31 of each year. However, for your very first RMD (the year you reach your required beginning date — April 1 following the year you turn 73), you have the option to delay until April 1 of the following year. This sounds helpful, but there's a catch: if you delay your first RMD to April 1, you'll take two RMDs in that calendar year — the delayed first-year RMD and the second-year RMD. Two RMDs in one year means double the income, potentially pushing you into higher tax brackets and IRMAA thresholds.

For most people, taking the first RMD in the year they turn 73 (rather than delaying) avoids the double-distribution problem. But if your taxable income will be significantly lower in the following year, the delay can sometimes make sense. Run the tax comparison before deciding.

If you're still working at 73 and participating in your current employer's 401k, you may be able to defer RMDs on that specific account until you retire (the "still-working exception"). This doesn't apply to IRAs or to 401k plans from former employers.

Frequently Asked Questions

Do Roth IRAs have RMDs?

No — Roth IRAs have no RMDs during the original owner's lifetime. This is a major advantage for estate planning; Roth funds can compound tax-free indefinitely without forced withdrawals. Note that Roth 401k accounts did have RMDs under the old rules, but SECURE 2.0 eliminated Roth 401k RMDs starting in 2024, aligning them with Roth IRAs. Inherited Roth IRAs are subject to distribution rules (the 10-year rule for non-spouse beneficiaries), but those distributions are still tax-free.

What if I have multiple IRA accounts?

Calculate each account's RMD separately based on its December 31 balance and your age factor. Then add them together to get your total IRA RMD. You can withdraw the total from any combination of your Traditional IRA accounts — you have flexibility in which accounts you draw from, as long as the combined withdrawal meets the total requirement. SEP and SIMPLE IRAs are included in the Traditional IRA aggregation. 401k and 403b plans must each be distributed from separately.

Can I take more than my RMD?

Yes. The RMD is a minimum, not a maximum. You can always withdraw more. However, excess withdrawals don't credit toward future years' RMDs — you still must take the calculated RMD in each subsequent year. Some retirees choose to take larger distributions in lower-income years to spread the tax burden more evenly, especially before Social Security begins pushing them into higher brackets.

What happens if I miss my RMD?

The IRS imposes an excise tax of 25% of the amount you should have withdrawn (reduced to 10% if you correct the error within the correction window). For example, if you failed to take a $15,000 RMD, the tax is $3,750 (or $1,500 if corrected promptly). You can request a waiver from the IRS using Form 5329 if the failure was due to reasonable error and you've taken steps to correct it — many first-time failure waivers are granted. The IRS also has an automatic waiver for certain situations under SECURE 2.0.