RMD at Age 79 — IRS Distribution Factor & 2026 Calculator
What is the Required Minimum Distribution for a 79-year-old?
At age 79, the IRS Uniform Lifetime Table assigns a distribution period of 21.1 years. This means your Required Minimum Distribution equals your December 31 prior-year account balance divided by 21.1. On a $500,000 account, the RMD is approximately $23,697 — about 4.7% of the account value.
At age 79, the IRS distribution factor is 21.1 years, producing an RMD of approximately $23,697 on a $500,000 balance — about 4.74%. You are now in the phase where the annual required withdrawal represents a meaningfully growing share of your retirement assets.
Calculate Your 2026 RMD
Age 79 · Balance $500,000 → ~$23,697 RMD
Enter your actual balance for a precise calculation
Formula
RMD = Balance ÷ 21.1 (IRS Uniform Lifetime Table, age 79)
IRS Distribution Period — Age 79
21.1
Distribution Period (years)
4.7%
% of Balance Required
$23,697
RMD on $500K Balance
$47,393
RMD on $1M Balance
Key RMD Rules
- 1IRS distribution factor at age 79: 21.1 years.
- 2RMD formula: December 31 prior-year balance ÷ 21.1.
- 3On a $500,000 account, this produces an RMD of approximately $23,697.
- 4Deadline: December 31 of the current year (or April 1 of the following year for your very first RMD only).
- 5The 25% penalty for missing an RMD (reduced to 10% if corrected within the correction window) applies regardless of age.
Common RMD Mistakes to Avoid
- ⚠Using the current year's balance instead of the December 31 prior-year balance — always use the prior December 31 value.
- ⚠Forgetting to take RMDs from each employer plan (401k, 403b) separately — you cannot aggregate multiple employer plans.
- ⚠Assuming the RMD percentage stays constant — it increases every year as the distribution factor decreases.
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Frequently Asked Questions
Disclaimer: This content is for informational purposes only and does not constitute tax or financial advice. RMD rules are based on IRS Publication 590-B and SECURE 2.0 Act provisions. Always consult a qualified tax professional or financial advisor for guidance specific to your situation. IRS rules may change; verify current requirements at irs.gov.