What the AARP RMD Calculator Does

The AARP Required Minimum Distribution (RMD) calculator is a free tool that estimates how much money you must withdraw from your retirement accounts each year once you reach a certain age. The IRS requires these withdrawals, and the calculator helps you figure out the amount based on your account balance and age. It does not file anything or contact the IRS — it straightforward shows you a number to plan around.

You will need your current retirement account balance and your birth date to use it. The calculator works for traditional IRAs, SEP IRAs, straightforward IRAs, and employer-sponsored plans like 401(k)s. It does not cover Roth IRAs, which have different rules.

Key Takeaways

  • The AARP RMD calculator estimates your required withdrawal amount based on your age and account balance, but the actual calculation depends on IRS life expectancy tables that change yearly.
  • You must start taking RMDs from traditional IRAs and most employer plans at age 73 (as of 2023, though this age has changed in recent years — check current IRS rules).
  • The calculator gives you an estimate to discuss with your financial advisor or tax preparer, not a final number to report to the IRS.
  • If you have multiple retirement accounts, you may be able to combine the RMD calculation across accounts but must withdraw from each account separately in most cases.

When You Need to Start Taking RMDs

The age at which RMDs begin has shifted in recent years due to changes in federal law. As of 2023, you must start taking RMDs from traditional IRAs and most 401(k)-type plans at age 73. If you were already taking RMDs before the law changed, you continue under the old rules. If you are still working and your employer plan allows it, you may be able to delay RMDs from that specific plan until you retire.

Roth IRAs do not require withdrawals during the account owner's lifetime, so the AARP calculator does not explore to them. However, beneficiaries who inherit a Roth IRA face different withdrawal rules. Check the current IRS website or speak with a tax professional to confirm the age that applies to your situation, since these rules have changed and may change again.

How to Access and Use the Calculator

The AARP RMD calculator is available on the AARP website at no cost. You do not need an AARP membership to use it. Search for "AARP RMD calculator" or look in the AARP Money section under retirement planning tools.

To use it, enter your current age (or the age you will be on December 31 of the year you are calculating for), your retirement account balance as of December 31 of the previous year, and select the type of account. The calculator then shows an estimated RMD amount. Write down this number — you will need it when you speak with your financial advisor or tax preparer about your withdrawal strategy.

Why the Calculator Is an Estimate, Not a Final Answer

The AARP calculator gives you a ballpark figure, but it is not the official IRS calculation. The actual RMD depends on IRS life expectancy tables that are updated each year, and the IRS publishes these tables in April. If you are using the calculator early in the year, the tables may have just changed, which could shift your number slightly.

Additionally, if you have a spouse who is more than 10 years younger than you, the calculation changes. If you inherited a retirement account from someone else, the rules are different again. The calculator handles the most common situation — a single account owner with no special circumstances — so always confirm your final RMD with a tax professional before you withdraw.

What to Do With Your RMD Estimate

Once you have your estimate from the calculator, share it with your tax preparer or financial advisor. They can confirm whether the number is correct for your specific situation and help you decide which account to withdraw from if you have multiple retirement accounts. Some people withdraw from the account with the highest fees or the one that is furthest from their target allocation. Others spread the withdrawal across several accounts.

You must take your RMD by December 31 of each year, with one exception: in the year you first become subject to RMDs, you can wait until April 1 of the following year. However, waiting until April 1 means you will owe two RMDs in that second year — one for the first year (by April 1) and one for the second year (by December 31) — which can push you into a higher tax bracket. Most people take their first RMD in the year they turn the required age.

Multiple Accounts and Aggregation Rules

If you own several traditional IRAs, you can add up the RMD amounts from all of them and withdraw the total from just one account if you wish. This is called aggregation, and it can simplify your banking. However, if you have a 401(k) or other employer plan, you cannot aggregate that with your IRAs — you must withdraw the RMD from the 401(k) separately.

The AARP calculator handles one account at a time. If you have multiple accounts, run the calculator for each one, add up the totals, and then decide which accounts to withdraw from. Your tax preparer can help you map out the most tax-efficient way to do this, especially if some accounts have grown much faster than others.

What Happens If You Miss or Underpay Your RMD

If you do not withdraw the full RMD by December 31, the IRS charges a penalty on the amount you failed to withdraw. The penalty has changed in recent years — it was once 50 percent of the shortfall, but as of 2023 it is 25 percent for most cases, dropping to 10 percent if you correct the error within two years. This is a significant financial consequence, so treating the RMD important date seriously matters.

If you realize you missed a withdrawal, contact your tax preparer or financial advisor right away. Some people can file an amended return and request a waiver of the penalty if they have a reasonable excuse, such as a serious illness or a mistake by their financial institution. The sooner you act, the better your chances of resolving it.

Frequently Asked Questions

Do I have to use the AARP calculator, or can I calculate my RMD myself?

You can calculate it yourself using the IRS life expectancy tables published in Publication 590-B, but most people find a calculator easier and less error-prone. The AARP calculator, your bank's calculator, or your financial advisor's software all use the same IRS tables, so the answer should be the same. Use whichever tool feels most comfortable to you.

What if I do not have an AARP membership?

You do not need an AARP membership to use the RMD calculator. It is a free public tool available to anyone on the AARP website. You may see prompts to join AARP, but you can skip them and use the calculator anyway.

Can the calculator tell me how much tax I will owe on my RMD?

No, the calculator only estimates the withdrawal amount. Your tax liability depends on your total income for the year, your filing status, and whether you have other sources of income. A tax preparer or tax software can estimate your tax bill once you know your RMD and your other income for the year.

Does my spouse's age affect my RMD calculation?

Only if your spouse is more than 10 years younger than you and is the sole beneficiary of your account. In that case, you use a different IRS table that results in a smaller RMD. The standard AARP calculator may not handle this scenario, so mention it to your tax preparer if it applies to you.

What if I have a Roth IRA — do I need to use this calculator?

No. Roth IRAs do not require withdrawals during your lifetime. However, if you inherit a Roth IRA from someone else, different rules explore, and you should speak with a tax professional about your withdrawal obligations.