RMD Calculator Guide 2026: Required Minimum Distributions Explained

Required Minimum Distributions (RMDs) are mandatory withdrawals that the IRS requires from most retirement accounts once you reach a certain age. These rules ensure that tax-deferred retirement savings are eventually taxed. Understanding when RMDs start, how to calculate them, and the penalties for non-compliance is essential for anyone with traditional retirement accounts. This guide explains RMDs for 2026, including the changes under SECURE 2.0.

What are Required Minimum Distributions?

RMDs are the minimum amounts you must withdraw annually from your retirement accounts once you reach the required age. The IRS mandates these withdrawals to ensure that tax-deferred retirement savings are eventually subject to income tax. Without RMDs, many people could theoretically leave their retirement funds untouched indefinitely, deferring taxes forever.

The amount you must withdraw is calculated using IRS life expectancy tables. The withdrawal is treated as ordinary income and is subject to income tax in the year you receive it. You can always withdraw more than the RMD if you wish, but you cannot withdraw less than the required amount without facing penalties.

RMDs apply to most tax-advantaged retirement accounts, including traditional IRAs, 401(k) plans, 403(b) plans, and other qualified retirement accounts. Roth IRAs are exempt from RMDs during the owner's lifetime, which is one of their key advantages.

Age Requirements Under SECURE 2.0

The SECURE 2.0 Act of 2022 increased the RMD age, giving retirees more time for tax-deferred growth. The current rules for 2026 are:

Date of Birth	RMD Age	First RMD Due
Before 1951	72	Already required
1951 - 1959	73	April 1 of the year after turning 73
1960 or later	75	April 1 of the year after turning 75

For your first RMD, you have until April 1 of the year following the year you reach the RMD age. For example, if you turn 73 in June 2026, your first RMD must be taken by April 1, 2027. After that, all subsequent RMDs must be taken by December 31 of each year.

It is important to note that if you delay your first RMD until April 1 of the following year, you will need to take two RMDs in that year - one for the prior year and one for the current year. This can push you into a higher tax bracket, so many financial advisors recommend taking the first RMD in the year you turn 73.

How to Calculate Your RMD

Calculating your RMD involves dividing your retirement account balance by the IRS life expectancy factor. Here is the step-by-step process:

For example, if your traditional IRA balance is $500,000 as of December 31, 2025, and you are turning 73 in 2026:

If you have multiple accounts of the same type (e.g., two traditional IRAs), you can aggregate them and take the total RMD from one account, or split it between them. However, 401(k) RMDs must be taken separately from each plan - you cannot aggregate 401(k) accounts.

Penalties for Not Taking RMDs

The IRS imposes significant penalties for failing to take your RMD on time. Under SECURE 2.0, the penalty structure has been reduced but remains substantial:

Scenario	Penalty Rate	Example ($18,868 RMD)
Standard penalty (not corrected)	25% of undistributed amount	$4,717
Corrected within correction window	10% of undistributed amount	$1,887
Corrected in a timely manner	Reduced or waived	Varies

The correction window is generally the period from the date the RMD was due until the latest of: (1) the date the IRS sends a notice of deficiency, (2) the date of determination in a Tax Court proceeding, or (3) the last day of the third month after the end of the plan year in which the RMD was required.

To avoid penalties, set up automatic RMD withdrawals from your retirement accounts. Many custodians offer this service, ensuring you never miss a deadline. If you realize you have missed an RMD, contact your custodian immediately to arrange a corrective distribution.

Which Accounts Require RMDs

RMDs apply to most tax-advantaged retirement accounts, but not all. Understanding which accounts are affected helps you plan your withdrawal strategy:

Accounts Requiring RMDs

• Traditional IRA: All balances are subject to RMDs from age 73/75.
• SEP IRA: Subject to RMDs, calculated on the full account balance.
• SIMPLE IRA: Subject to RMDs from age 73/75.
• 401(k) plans: Subject to RMDs from age 73/75, even if still employed (unless still working for the employer).
• 403(b) plans: Subject to RMDs from age 73/75.
• 457(b) plans: Subject to RMDs from age 73/75.
• Inherited retirement accounts: Subject to RMDs regardless of the beneficiary's age.

Accounts NOT Requiring RMDs

• Roth IRA: No RMDs during the owner's lifetime. This is a key advantage of Roth IRAs.
• Roth 401(k): As of 2024, Roth 401(k) accounts no longer require RMDs during the owner's lifetime.
• Roth 403(b): Same as Roth 401(k) - no lifetime RMDs.
• Taxable brokerage accounts: Not subject to RMDs (but subject to capital gains tax on withdrawals).

The exemption of Roth IRAs from lifetime RMDs makes them particularly valuable for estate planning, as the funds can continue to grow tax-free for beneficiaries.

RMD Strategies

Managing RMDs effectively can save you thousands in taxes. Consider these strategies:

• Charitable distributions: If you are 70.5 or older, you can donate up to $100,000 directly from your IRA to a qualified charity. This counts toward your RMD but is excluded from taxable income.
• Roth conversion ladder: Before reaching RMD age, consider converting traditional IRA funds to a Roth IRA. You pay tax on the conversion now, but Roth IRAs have no lifetime RMDs, giving you more flexibility in retirement.
• Tax bracket management: Take more than the RMD in lower-income years and less in higher-income years to manage your tax bracket.
• Qualified Charitable Distributions (QCDs): QCDs are the most tax-efficient way to satisfy RMDs if you donate to charity regularly.
• Spousal considerations: If your spouse is more than 10 years younger, use the Joint Life and Last Survivor table for a lower RMD factor.

Planning for RMDs should begin well before you reach RMD age. Working with a financial advisor to develop a tax-efficient withdrawal strategy can significantly impact your retirement income and tax burden.