401(k) RMD Calculator (Workplace 401k Minimum Required Distribution Estimator)

Your Age This Year (as of Dec 31)

401(k) Account Balance on Dec 31 of Prior Year ($)

Are you still actively employed by the company sponsoring this 401(k)?

Do you own 5% or more of this business/employer?

For Reference Only

These figures are estimates based on standard formulas. Your actual numbers will depend on your lender, location, credit profile, and current market rates. Always confirm with a licensed professional before making financial decisions.

Calculation Results

2026 Annual 401(k) Required Minimum Distribution

$18,867.92

Must be distributed from this specific 401(k) plan by Dec 31, 2026

Monthly Equivalent

$1,572.33/mo

IRS Life Divisor

26.5

Standard Uniform Lifetime Table applied.

Put This Number to Work

A calculator result is only useful if you act on it. Use these figures as a baseline — then compare them against real loan offers, run different scenarios, and see how small changes in rate or term shift your total cost significantly.

How to Calculate 401(k) Minimum Required Distributions in 2026

If you have money saved in an employer-sponsored traditional 401(k), 403(b), or governmental 457(b) plan, our 401(k) required minimum distribution calculator helps you determine your exact IRS withdrawal obligations for the 2026 tax year.

The passage of the SECURE 2.0 Act restructured statutory distribution schedules across American retirement accounts. Under current law, mandatory distributions begin at age 73 for retirees born between 1951 and 1959, and increase to age 75 for individuals born in 1960 or later.

💼 Worked Example: Eleanor's Multi-Account 401(k) Distribution

Consider Eleanor, a retired hospital administrator who celebrates her 74th birthday in 2026 (born in 1952). Eleanor maintains two separate employer-sponsored accounts from different career chapters:

Account Values as of December 31, 2025:

Former Employer A 401(k) (Fidelity): $180,000 balance
Former Employer B 401(k) (Vanguard): $640,000 balance

Step 1: Determine the Life Expectancy Factor. Consulting the IRS Uniform Lifetime Table (IRS Publication 590-B, Table III), the distribution period for an individual age 74 is exactly 25.5.

Step 2: Calculate Required Withdrawals Independently.

Fidelity 401(k)$180,000 ÷ 25.5 = $7,058.82

Vanguard 401(k)$640,000 ÷ 25.5 = $25,098.04

The Non-Aggregation Rule: Unlike Traditional IRAs (where you can sum your balances and withdraw the aggregate amount from any single IRA), Eleanor cannot withdraw the total $32,156.86 solely from Vanguard. IRS regulations require Eleanor to request $7,058.82 from Fidelity and $25,098.04 from Vanguard.

📐 Calculation Methodology & IRS Publication 590-B

The statutory RMD calculation relies on two verified inputs defined under Internal Revenue Code Section 401(a)(9):

RMD = (Prior Year December 31 Account Balance) ÷ (IRS Distribution Period Factor)

The IRS supplies three distinct actuarial tables in Publication 590-B:

Uniform Lifetime Table (Table III): Used by all unmarried owners, married owners whose spouses are not more than 10 years younger, and married owners whose spouses are not the sole primary beneficiary.
Joint and Last Survivor Table (Table II): Used exclusively if your spouse is your sole primary beneficiary and is more than 10 years younger than you, producing a lower mandatory annual withdrawal.
Single Life Expectancy Table (Table I): Used strictly by beneficiaries calculating distributions from inherited retirement accounts.

Critical Rules That Separate 401(k) RMDs from IRA RMDs

1. No Aggregation Across 401(k) Plans

If you have multiple workplace 401(k) accounts from previous employers, Treasury Regulation § 1.401(a)(9)-5 prohibits aggregation. You must calculate each plan's RMD individually and satisfy it from that specific custodian.

2. The "Still-Working" Exemption

If you remain actively employed past age 73 and do not own 5% or more of the sponsoring business, you can postpone RMDs from your current employer's 401(k) until April 1 of the year following your actual retirement.

Roth 401(k) Exemption Under SECURE 2.0

Prior to 2024, workplace Roth 401(k) accounts were subject to mandatory RMDs. Section 325 of the SECURE 2.0 Act eliminated pre-death RMDs for employer-sponsored designated Roth accounts. In 2026 and beyond, designated Roth 401(k) balances require $0 annual distributions during the owner's lifetime.

Also have Traditional IRAs or an Inherited Account?

Check our full suite of IRS-compliant distribution calculators.

IRA RMD Calculator Inherited IRA RMD

Frequently Asked Questions

Authoritative answers to common questions about this calculation

Q1.How does the "Still Working" exception work for 401(k) RMDs in 2026?

If you are past age 73 and still actively employed by the company that sponsors your 401(k) or 403(b), the IRS allows you to delay taking RMDs from THAT specific employer plan until April 1 of the year following your actual retirement. However, this exception does NOT apply to: (1) IRAs of any kind, (2) 401(k) plans from prior employers, or (3) individuals who own 5% or more of the company sponsoring the plan.

Q2.Can I combine or aggregate multiple 401(k) RMDs into a single withdrawal?

NO. Unlike Traditional IRAs (which allow you to aggregate RMDs across all your IRAs and take the full amount from one account), 401(k) and 403(b) accounts must be calculated and distributed separately from each individual plan. Taking an aggregate RMD from only one 401(k) will cause the IRS to assess a 25% missed-RMD penalty on the other accounts.

Q3.Do designated Roth 401(k) plans have required minimum distributions in 2026?

No! Under the SECURE 2.0 Act, pre-death RMDs for employer-sponsored Roth 401(k) and Roth 403(b) accounts were permanently eliminated starting in 2024. Designated Roth 401(k) balances can now remain in your workplace plan and continue compounding tax-free for life, exactly like a Roth IRA.

Q4.What is the penalty for missing a 401(k) minimum required distribution?

Under SECURE 2.0, the IRS excise penalty for missing a 401(k) RMD is 25% of the undistributed amount. If corrected promptly within the 2-year statutory correction window by filing IRS Form 5329, the penalty is reduced to 10%.

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401(k) RMD Calculator: Why Your Workplace Plan Follows Different Rules Than an IRA
401(k) RMDs follow different rules than IRAs — no aggregation across accounts, a possible still-working delay, and Roth 401(k)s are now exempt. Use our free RMD Calculator to find exactly what your workplace plan requires this year.