FinanceFirst financial glossary
What is Required Minimum Distribution (RMD)?
A direct definition, followed by examples, comparisons, related concepts, and the sources that support the explanation.
Written by Asim Ahmad, Founder and Editor, FinanceFirst
Definition
In one sentence about Required Minimum Distribution (RMD)
A Required Minimum Distribution (RMD) is the minimum amount you must withdraw annually from tax-deferred retirement accounts (Traditional IRA, 401(k), 403(b), 457(b)) starting at age 73. The IRS requires these withdrawals to ensure that tax-deferred savings are eventually taxed. RMDs are calculated by dividing your prior year-end account balance by a life expectancy factor.
Why Required Minimum Distributions Matter
RMDs represent the government's mechanism for taxing money that has been growing tax-deferred in retirement accounts for decades. Missing or underpaying an RMD triggers one of the steepest penalties in the tax code: 25% of the amount not withdrawn (reduced to 10% if corrected within two years). For retirees with large Traditional IRA or 401(k) balances, RMDs can generate significant taxable income that pushes them into higher tax brackets, increases the taxation of Social Security benefits, and triggers Medicare IRMAA surcharges. According to the IRS Uniform Lifetime Table, a 73-year-old with a $500,000 Traditional IRA must withdraw approximately $18,868 in their first RMD year. By age 85, the required percentage increases, forcing larger distributions regardless of whether the retiree needs the income. Planning for RMDs should begin years before they start, using strategies like Roth conversions and strategic withdrawal sequencing to reduce the lifetime tax impact.
Real-World Example: RMD Calculations by Age
A retiree with a $500,000 Traditional IRA balance (as of December 31 of the prior year) must take the following RMDs at various ages, based on the IRS Uniform Lifetime Table:
| Age | Distribution Period (Divisor) | RMD Amount | Percentage of Balance | Remaining Balance After RMD |
|---|---|---|---|---|
| 73 | 26.5 | $18,868 | 3.77% | $481,132 |
| 75 | 24.6 | $20,325 | 4.07% | $479,675 |
| 80 | 20.2 | $24,752 | 4.95% | $475,248 |
| 85 | 16.0 | $31,250 | 6.25% | $468,750 |
| 90 | 12.2 | $40,984 | 8.20% | $459,016 |
How to Calculate Your RMD
The RMD formula is straightforward, but accuracy is critical to avoid penalties:
| Step | Action | Example |
|---|---|---|
| 1 | Find your account balance as of December 31 of the prior year | $500,000 |
| 2 | Find your age as of December 31 of the distribution year | 73 years old |
| 3 | Look up the distribution period in the IRS Uniform Lifetime Table | 26.5 |
| 4 | Divide the balance by the distribution period | $500,000 / 26.5 = $18,868 |
| 5 | Withdraw at least this amount by December 31 (April 1 for the first RMD year only) | Withdraw $18,868 or more |
When RMDs Apply
RMD rules apply to most tax-deferred retirement accounts but have important exceptions and timing rules:
- Traditional IRA: RMDs begin at age 73 (under the SECURE 2.0 Act). Your first RMD can be delayed until April 1 of the year after you turn 73, but delaying means two RMDs in one year
- 401(k) and 403(b): RMDs begin at age 73, but if you are still working at the company sponsoring the plan, you may delay RMDs until retirement (the still-working exception does not apply to 5%+ owners)
- Roth IRA: No RMDs during the owner's lifetime. This is a major advantage over Traditional IRAs and one reason Roth conversions are valuable
- Roth 401(k): Previously required RMDs, but the SECURE 2.0 Act eliminated RMDs for Roth 401(k) accounts starting in 2024
- Inherited IRAs: Non-spouse beneficiaries generally must withdraw the entire balance within 10 years under the SECURE Act. Spouse beneficiaries have more flexibility
- Multiple accounts: If you have multiple Traditional IRAs, you calculate the RMD for each but can take the total from any one or combination. 401(k) RMDs must be taken separately from each 401(k) plan
Common RMD Mistakes
These errors can trigger steep penalties and unexpected tax bills:
- Missing the deadline: RMDs must be taken by December 31 each year (April 1 for the first year only). Missing the deadline results in a 25% penalty on the shortfall, which drops to 10% if corrected within two years
- Delaying the first RMD to April 1: While allowed, this forces two RMDs into the same tax year (the delayed first RMD plus the current year RMD), which can push you into a significantly higher bracket
- Not aggregating IRA balances correctly: You must calculate the RMD separately for each Traditional IRA based on each account's balance, then you may take the total from one or more IRAs. 401(k) accounts cannot be aggregated with IRAs
- Forgetting inherited IRA RMD rules: Inherited IRAs have different distribution rules than your own IRAs. Non-spouse beneficiaries face a 10-year withdrawal requirement under the SECURE Act
- Not planning for the tax impact: Large RMDs can push you into a higher bracket, trigger the 3.8% Net Investment Income Tax, increase Medicare premiums through IRMAA, and cause up to 85% of Social Security benefits to be taxable. Pre-retirement Roth conversions can reduce future RMD amounts
Side-by-side
RMD Rules by Account Type
| Account Type | RMDs Required? | Starting Age | Special Rules |
|---|---|---|---|
| Traditional IRA | Yes | 73 | Can aggregate across all Traditional IRAs |
| Traditional 401(k) | Yes | 73 (or retirement if later) | Still-working exception; must take from each plan |
| Roth IRA | No | N/A | No RMDs during owner's lifetime |
| Roth 401(k) | No (as of 2024) | N/A | SECURE 2.0 Act eliminated Roth 401(k) RMDs |
| Inherited IRA (non-spouse) | Yes | Immediately | Must empty within 10 years (SECURE Act) |
Key distinction: The elimination of RMDs from Roth IRAs and Roth 401(k)s makes Roth conversions before age 73 especially valuable for reducing mandatory taxable distributions.
Required Minimum Distributions force you to withdraw and pay taxes on tax-deferred retirement savings starting at age 73. Calculate your RMD accurately each year to avoid the 25% penalty. Plan ahead by considering Roth conversions before RMDs begin to reduce mandatory taxable distributions. If you do not need the income, use Qualified Charitable Distributions to satisfy your RMD tax-free. The biggest mistake is waiting until RMDs begin to think about them.
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Common questions
Frequently asked questions
What happens if I do not take my RMD?
If you fail to withdraw the full RMD amount by the deadline, the IRS imposes a 25% excise tax on the shortfall (the amount you should have withdrawn but did not). Under the SECURE 2.0 Act, this penalty is reduced to 10% if you correct the error within two years by taking the missed distribution and filing an updated tax return.
Can I reinvest my RMD?
You must withdraw the RMD from the tax-deferred account (it will be taxed as ordinary income), but you can then reinvest the after-tax amount in a taxable brokerage account, a Roth IRA (if you have eligible earned income), or any other investment. You cannot put it back into the Traditional IRA or 401(k).
Do I have to take an RMD if I do not need the money?
Yes. RMDs are mandatory regardless of whether you need the income. If you do not need the funds, consider donating up to $105,000 per year directly from your IRA to a qualified charity through a Qualified Charitable Distribution (QCD). QCDs satisfy your RMD without adding to your taxable income.
How do RMDs affect my Social Security taxes?
RMD income is added to your adjusted gross income, which can cause up to 85% of your Social Security benefits to become taxable. For single filers, combined income above $34,000 triggers taxation of up to 85% of benefits. For married filing jointly, the threshold is $44,000. Pre-retirement Roth conversions can reduce future RMDs and their impact on Social Security taxation.
What is a Qualified Charitable Distribution (QCD)?
A QCD allows IRA owners age 70 1/2 or older to donate up to $105,000 per year (2025 limit) directly from their IRA to a qualified charity. The distribution is excluded from taxable income and counts toward satisfying your RMD. This is one of the most tax-efficient ways to make charitable donations in retirement.
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