Planning retirement income involves more than knowing how much money you have saved. Once you reach the age when required minimum distributions apply, you also need to understand how much you may be required to withdraw from certain retirement accounts each year. A Required Minimum Distribution, commonly called an RMD, is the minimum amount that must generally be withdrawn from eligible tax-deferred retirement accounts under federal tax rules.
AARP RMD Calculator
The AARP RMD Calculator on this page provides a convenient way to estimate an RMD using your age, retirement account balance from December 31 of the preceding year, and information about a qualifying younger spouse. The calculator also provides the distribution factor and an estimated monthly withdrawal amount, helping you understand how an annual RMD may fit into your retirement income plan.
Under current federal rules, many individuals generally begin RMDs at age 73. SECURE 2.0 also provides for a future increase to age 75 for individuals who reach the applicable age after 2032.
Because RMD rules can vary depending on the account type, beneficiary situation, age, retirement status, and other circumstances, an online calculator should be treated as an estimate rather than personalized tax advice.
What Is an RMD?
A Required Minimum Distribution is the minimum amount that you generally must take from certain retirement accounts each year after reaching the applicable RMD age.
RMD rules are designed to prevent retirement savings held in tax-deferred accounts from remaining untaxed indefinitely. For example, traditional IRAs and many employer-sponsored retirement plans can become subject to annual distributions once the applicable age is reached.
The IRS generally calculates an RMD by taking the retirement account balance at the end of the immediately preceding calendar year and dividing it by an applicable life expectancy or distribution factor.
The basic relationship is:
RMD = Previous December 31 Account Balance ÷ Applicable Distribution Period
This makes two pieces of information particularly important:
- Your retirement account balance on December 31 of the previous year
- The life expectancy or distribution factor that applies to your situation
The calculator uses these concepts to provide an estimate of your required annual distribution.
What Does the AARP RMD Calculator Calculate?
The calculator is designed to give you several useful results from a small number of inputs.
You enter your age, the relevant retirement account balance, and whether your spouse is more than 10 years younger and is the sole beneficiary. When applicable, you also enter your spouse's age.
The calculator then displays:
- Estimated Required Minimum Distribution
- Distribution Period
- Account Balance
- Estimated Monthly Amount
The main result represents the estimated amount that could be required to be distributed during the year under the assumptions used by the calculator.
The distribution period is important because it acts as the denominator in the RMD calculation. A larger distribution factor generally produces a smaller annual RMD, while a smaller factor produces a larger annual RMD.
How to Use the AARP RMD Calculator
Using the calculator is straightforward.
Step 1: Enter Your Age
Enter your current age between 73 and 120.
The calculator begins at age 73 because that is the current general RMD starting age for many individuals under the rules reflected in the tool. The IRS states that an individual's first RMD generally applies for the year in which the individual reaches age 73, although the first distribution can generally be delayed until April 1 of the following year.
Step 2: Enter Your Retirement Account Balance
Enter the value of the applicable retirement account as of December 31 of the previous year.
This is a particularly important input because an RMD generally uses the prior year-end account balance rather than today's account value.
For example, when calculating a 2026 RMD, the relevant balance is generally the account value at the end of December 31, 2025, subject to the rules applicable to the particular account.
Step 3: Review the Spouse Question
The calculator asks whether your spouse is more than 10 years younger than you and is the sole beneficiary.
This matters because the IRS provides a special rule for an account owner's spouse when the spouse is the sole beneficiary and more than 10 years younger than the owner. In that situation, the IRS uses the Joint and Last Survivor Table rather than the standard Uniform Lifetime Table.
Step 4: Enter Your Spouse's Age When Required
When the qualifying spouse option is selected, enter your spouse's age.
The age difference is important because the special calculation applies only when the spouse is more than 10 years younger and is the sole beneficiary.
Step 5: Click Calculate RMD
The calculator will show your estimated RMD along with the applicable distribution factor, account balance, and estimated monthly amount.
The RMD Formula Explained
The standard RMD calculation is relatively simple.
Basic RMD Formula
RMD = Prior December 31 Account Balance ÷ Distribution Factor
Suppose you have a retirement account balance of $500,000 and the applicable distribution factor is 26.5.
The estimated RMD would be:
$500,000 ÷ 26.5 = $18,867.92
Therefore, the estimated annual RMD would be approximately $18,867.92.
The calculator also divides the annual amount by 12 to provide an estimated monthly figure.
Monthly RMD Formula
Estimated Monthly RMD = Annual RMD ÷ 12
Using the example above:
$18,867.92 ÷ 12 = $1,572.33
The monthly number is simply an illustration. An RMD does not generally have to be withdrawn in equal monthly installments. You may have flexibility regarding when and how you take the required annual distribution, subject to the rules of your plan or account.
Understanding the Distribution Factor
The distribution factor is one of the most important parts of an RMD calculation.
For many account owners, the IRS Uniform Lifetime Table provides the applicable denominator. The factor generally becomes smaller as age increases.
For example, the IRS's current Uniform Lifetime Table lists factors including:
| Age | Distribution Period |
|---|---|
| 73 | 26.5 |
| 74 | 25.5 |
| 75 | 24.6 |
| 76 | 23.7 |
| 77 | 22.9 |
| 78 | 22.0 |
| 79 | 21.1 |
| 80 | 20.2 |
| 81 | 19.4 |
| 82 | 18.5 |
| 83 | 17.7 |
| 84 | 16.8 |
| 85 | 16.0 |
| 90 | 12.2 |
| 95 | 8.9 |
| 100 | 6.4 |
| 105 | 4.6 |
| 110 | 3.5 |
| 115 | 2.9 |
| 120+ | 2.0 |
These values are from the IRS Uniform Lifetime Table reflected in current IRS guidance.
Notice the pattern: as age rises, the divisor generally declines. Assuming the account balance stayed exactly the same, that would cause the calculated RMD to rise.
Why the December 31 Balance Matters
A common mistake is entering the current account balance into an RMD calculation.
RMD calculations generally rely on the account's fair market value at the close of business on December 31 of the prior year.
For example:
| RMD Year | Relevant Prior-Year-End Balance |
|---|---|
| 2026 | December 31, 2025 balance |
| 2027 | December 31, 2026 balance |
| 2028 | December 31, 2027 balance |
This distinction can be significant if your retirement account has experienced substantial gains or losses during the current year.
Using the correct prior-year-end balance helps ensure that the estimate follows the fundamental RMD calculation method.
RMD Example for Age 73
Consider a 73-year-old retirement account owner with a previous December 31 balance of $400,000.
Using a distribution factor of 26.5:
RMD = $400,000 ÷ 26.5
RMD = $15,094.34
The estimated monthly amount would be:
$15,094.34 ÷ 12 = $1,257.86
So the estimated annual RMD is approximately $15,094.34, while the equivalent monthly amount is approximately $1,257.86.
Again, the monthly result is a budgeting aid rather than necessarily the amount that must be withdrawn every month.
RMD Example for Age 80
Now consider an 80-year-old with an eligible retirement account balance of $750,000.
The IRS Uniform Lifetime Table lists a factor of 20.2 at age 80.
Calculation:
$750,000 ÷ 20.2 = $37,128.71
Estimated monthly equivalent:
$37,128.71 ÷ 12 = $3,094.06
This illustrates why the account owner's age can materially affect the required amount. As the distribution factor becomes smaller, the resulting RMD can become larger when the account balance is unchanged.
RMD Example With Investment Changes
Suppose an investor has a qualifying account worth $600,000 at the end of one year.
After entering the next RMD year, the applicable factor is 24.6.
The estimated RMD is:
$600,000 ÷ 24.6 = $24,390.24
Now imagine the prior December 31 balance had instead been $500,000.
The calculation would be:
$500,000 ÷ 24.6 = $20,325.20
The difference in prior-year-end account value changes the RMD by more than $4,000.
This is one reason retirement planning should account for investment performance, withdrawals, and market volatility rather than assuming that the RMD will remain the same every year.
Special Rule for a Much Younger Spouse
One particularly important feature of the calculator is the spouse question.
The IRS states that when the account owner's spouse is the sole beneficiary and more than 10 years younger than the owner, the Joint and Last Survivor Table may be used instead of the Uniform Lifetime Table.
This rule can produce a larger distribution factor because the calculation considers the joint life expectancy of the owner and the substantially younger spouse.
A larger factor generally means a smaller RMD for the same account balance.
Example of the Concept
Suppose an account owner is 73 and has a younger spouse who qualifies for the special calculation.
Using a standard factor of 26.5, a $500,000 balance would produce:
$500,000 ÷ 26.5 = $18,867.92
A qualifying joint-life factor could be larger than 26.5, which would generally reduce the required distribution.
The exact IRS factor depends on the owner's age and spouse's age. Because the special table is age-specific, it is important to use the current IRS table when determining the actual distribution.
Why RMDs Matter for Retirement Planning
RMDs are not simply a tax-rule calculation. They can also have a meaningful effect on retirement cash flow.
A required withdrawal may become part of your annual spending budget. You might use an RMD to cover housing costs, healthcare expenses, travel, living expenses, or other retirement needs.
However, the amount withdrawn can also affect your overall taxable income. The tax treatment depends on the account type and the nature of the distribution.
This means an RMD should generally be considered as part of a broader retirement-income strategy rather than treated as an isolated number.
Are RMDs Required From Every Retirement Account?
Not necessarily.
RMD rules depend on the type of retirement account and the taxpayer's circumstances. The IRS provides different rules for IRAs, employer retirement plans, inherited accounts, designated Roth accounts, and other arrangements.
For example, the IRS states that lifetime RMDs are generally not required from a traditional Roth IRA while the original owner is alive. Designated Roth accounts in certain employer plans also have different rules under SECURE 2.0.
Therefore, entering an account balance into an RMD calculator does not automatically mean the account is subject to an RMD.
When Do RMDs Begin?
Under current federal rules, many individuals begin their RMDs at age 73.
The rules also include a special timing feature for the first RMD. The IRS explains that although the first RMD generally applies for the year you reach age 73, you can generally delay taking that first RMD until April 1 of the following year.
That choice can result in two RMDs being required during the following calendar year: the delayed first distribution and the second distribution for that following year.
This is an important planning issue because taking two taxable distributions in a single year could affect your taxable income.
Age 73 Is Not the Final RMD Starting Age
Retirement rules have changed significantly over time.
SECURE 2.0 increased the RMD starting age to 73 for individuals reaching the applicable age after 2022. It also provides that the applicable age increases to 75 for individuals who reach age 74 after 2032.
Because retirement legislation can change, people planning decades into the future should verify the rules that apply when they actually become subject to RMDs.
How Much Should You Withdraw?
The RMD is a minimum distribution requirement, not necessarily a recommendation for how much you should spend.
Your financial needs may be greater than the RMD. In other cases, you may not need the entire distribution for living expenses.
For someone who does not need the cash immediately, retirement-income planning might involve deciding what to do with funds after satisfying the required distribution.
Possible uses include paying expenses, maintaining cash reserves, reinvesting eligible funds, or supporting other financial goals. The appropriate choice depends on the person's circumstances, tax position, investment objectives, and risk tolerance.
RMDs and Taxes
RMDs from traditional tax-deferred retirement accounts are generally included in taxable income, although the exact tax treatment can depend on the account, contribution history, and nature of the distribution.
An RMD is therefore important not only because of the amount withdrawn but also because of its potential effect on the taxpayer's overall financial picture.
For example, a larger RMD could potentially increase adjusted gross income and affect other income-based calculations.
This is why retirement planning should look beyond the calculator result and consider the interaction between:
- Retirement income
- Social Security benefits
- Investment income
- Tax brackets
- Charitable giving
- Healthcare costs
- Other taxable distributions
A tax professional can help determine how your RMD fits into your broader tax strategy.
RMD Planning Tips
Keep a Record of the December 31 Balance
Maintain statements showing the value of each applicable retirement account on December 31. This makes the next year's RMD calculation easier and helps create a clear documentation trail.
Review Beneficiary Designations
The identity of the beneficiary can matter for RMD calculations and inherited-account rules. A qualifying younger spouse can receive special treatment under certain circumstances.
Do Not Assume Every Account Uses the Same Rule
Different retirement plans can have different RMD requirements. The IRS notes, for example, that IRA aggregation rules differ from rules requiring distributions from separate employer plans.
Check the Applicable IRS Table
Life expectancy factors can change as regulations and tables are updated. Always compare a calculator's estimate against current IRS guidance before making an actual distribution.
Plan Before the Deadline
Do not wait until the final days of the year to determine an RMD. Early planning gives you more time to coordinate withdrawals, taxes, investments, and cash needs.
A Simple RMD Reference Table
| Item | What It Means |
|---|---|
| RMD | Minimum annual amount that generally must be withdrawn |
| Prior-year balance | Account value on December 31 of the preceding year |
| Distribution factor | IRS life expectancy denominator used in the calculation |
| Annual RMD | Prior December 31 balance divided by the applicable factor |
| Monthly equivalent | Annual RMD divided by 12 |
| Uniform Lifetime Table | Standard table used for many account owners |
| Joint and Last Survivor Table | Special table for a qualifying younger sole-beneficiary spouse |
| Age 73 | Current general RMD starting age for many individuals |
| Age 75 | Future applicable age under SECURE 2.0 for certain younger cohorts |
IRS rules determine which table and calculation method apply to an individual situation.
Important Limitations of This RMD Calculator
An online calculator can provide a useful estimate, but it should not replace an official IRS calculation or professional advice.
The calculator provided on this page uses the Uniform Lifetime Table for its standard calculation and provides a special spouse calculation when the spouse is more than 10 years younger and designated as the sole beneficiary.
However, the supplied calculator's spouse method is an approximation rather than a complete age-by-age implementation of IRS Joint and Last Survivor Table II. It also differs from current IRS table data at the oldest ages—for example, current IRS Publication 590-B lists 2.0 for age 120 and over, while the supplied calculator uses 1.0 at age 120.
For that reason, the calculator should be used primarily for planning and estimation.
Before taking a real distribution, verify the applicable factor using current IRS guidance, your retirement plan administrator, IRA custodian, or a qualified tax professional.
Who Can Benefit From an RMD Calculator?
An RMD calculator can be useful for several groups of retirement savers.
People approaching age 73 can use it to understand how large their first required distribution might be. Existing retirees can use it to estimate future withdrawals and incorporate them into annual cash-flow planning.
It can also help spouses understand how beneficiary circumstances may affect distribution calculations.
Financial planners and families can use the estimate as an initial planning figure before performing a more detailed account-by-account review.
Why Using an RMD Calculator Can Be Helpful
Manually calculating an RMD requires selecting the correct balance, identifying the correct distribution factor, and performing the division.
A calculator simplifies the arithmetic and makes it easier to compare different scenarios.
For example, you can change the account balance to see how investment growth or withdrawals could affect a future RMD. You can also compare results at different ages to understand how the distribution factor changes over time.
The calculator can therefore serve as an educational and retirement-planning tool, particularly when you're trying to build a preliminary income forecast.
Frequently Asked Questions About RMDs
1. What is an RMD?
An RMD, or Required Minimum Distribution, is generally the minimum amount that must be withdrawn each year from certain retirement accounts after the applicable RMD age is reached.
2. At what age do RMDs generally begin?
Under current federal rules, many individuals generally begin RMDs at age 73. SECURE 2.0 provides for a future applicable age of 75 for certain individuals reaching the relevant age after 2032.
3. How is an RMD calculated?
The standard calculation generally divides the retirement account's December 31 balance from the prior year by an applicable IRS distribution factor.
4. Why does the calculator ask for my December 31 balance?
The prior December 31 account value is generally used to calculate the current year's RMD.
5. Does my RMD have to be withdrawn monthly?
No. The monthly amount shown by a calculator is typically just an annual RMD divided by 12 for budgeting purposes. Actual withdrawal timing can depend on your account and plan rules.
6. What if my spouse is more than 10 years younger?
When your spouse is more than 10 years younger and is the sole beneficiary, IRS rules generally allow the Joint and Last Survivor Table to be used instead of the Uniform Lifetime Table.
7. Does every retirement account have an RMD?
No. RMD requirements vary by account type and circumstances. Certain Roth arrangements receive different treatment, and inherited accounts may follow separate rules.
8. Can I delay my first RMD?
Generally, the first RMD can be delayed until April 1 of the year following the year you reach age 73. However, delaying it can mean taking two RMDs in the following calendar year.
9. Is the amount calculated by this RMD calculator exact?
It is an estimate. Current IRS tables, account-specific requirements, beneficiary circumstances, and other rules should be reviewed before completing an actual distribution. The spouse calculation in this particular tool should receive extra verification because it uses an approximation rather than a complete IRS Joint and Last Survivor Table.
10. Can an RMD calculator replace professional tax advice?
No. A calculator can help with arithmetic and retirement planning, but it does not evaluate every tax, beneficiary, plan-administration, or account-specific issue. For important distribution decisions, verify the calculation against current IRS rules and consider professional advice.
Final Thoughts
Required Minimum Distributions are an important part of retirement planning for anyone subject to federal RMD rules. Understanding how the calculation works can make retirement income decisions easier and help you prepare for future withdrawals.
The basic concept is straightforward: start with the applicable retirement account balance from December 31 of the previous year and divide it by the appropriate IRS distribution factor.
The AARP RMD Calculator on this page can provide a useful estimate of the annual RMD, distribution period, account balance, and monthly equivalent. It is particularly helpful for understanding how age and retirement savings interact to determine a potential distribution amount.
However, RMD regulations are detailed, and the correct calculation can depend on the type of retirement account, beneficiary designation, spouse's age, employment status, inherited-account rules, and other circumstances. Current IRS guidance should always take priority over an online estimate.
Use the calculator as a planning starting point, keep accurate retirement account records, review your beneficiary information, and verify the final distribution amount before taking action. Doing so can help you avoid unnecessary surprises and make your retirement income strategy more organized and tax-aware.