RMD Calculator

The RMD Calculator (Required Minimum Distribution Calculator) determines exactly how much you must withdraw each year from your Traditional IRA, 401(k), or other pre-tax retirement accounts to comply with IRS regulations. Failing to take the correct RMD triggers one of the steepest tax penalties in the U.S. tax code: 25% of the amount not withdrawn.

Required Minimum Distributions were created to prevent indefinite tax deferral of retirement savings. The IRS mandates that retirees begin withdrawing—and paying taxes on—their pre-tax retirement accounts starting at age 73 (SECURE 2.0 Act, effective 2023). The distribution amount is calculated each year based on your account balance and an IRS-provided life expectancy factor called the Distribution Period.

This calculator uses the IRS Uniform Lifetime Table, which applies to most account owners. It is also valuable to use alongside the Annuity Calculator to plan how to structure ongoing retirement income from your distributions.

• Approaching age 73: Calculate your first RMD and plan for the tax impact before you must take it.
• Annual tax planning: Recalculate each year, as your account balance changes and your distribution period shortens.
• Multiple account holders: If you have multiple Traditional IRAs, calculate each account's RMD separately to understand the aggregate required withdrawal.
• Charitable giving strategy: Determine your RMD amount to plan how much to donate as a QCD (Qualified Charitable Distribution) to reduce taxable income.
• Estate planning: Help beneficiaries understand what RMDs they'll inherit along with the account.
• Roth conversion planning: Use RMD projections to decide whether converting pre-tax assets to a Roth IRA makes sense before RMDs begin.

The RMD calculation uses a straightforward formula mandated by the IRS:

The Distribution Period is taken from the IRS Uniform Lifetime Table (Publication 590-B) and is based on your age as of December 31 of the year you are calculating the RMD for. The table assumes a joint life expectancy with a hypothetical beneficiary 10 years younger.

Exception: If your sole beneficiary is your spouse who is more than 10 years younger, you use the Joint Life Expectancy Table, which produces lower RMDs.

The distribution period decreases each year, meaning the percentage of your account you must withdraw increases as you age. Here are the distribution periods for key ages:

1. Find your December 31 balance: Locate the year-end statement for your Traditional IRA, 401(k), or other pre-tax account from the prior year.
2. Determine your age on December 31: Use your birthday to find your age as of December 31 of the current tax year.
3. Look up the Distribution Period: Use the IRS Uniform Lifetime Table from Publication 590-B to find the factor for your age.
4. Divide balance by the distribution period: RMD = Balance ÷ Distribution Period.
5. Repeat for each account: If you have multiple qualifying accounts, calculate each separately. For IRAs, you may aggregate and take from any account; for 401(k)s, each plan must be satisfied separately.
6. Withdraw by December 31: Take your full RMD by December 31 of each year. (Exception: your first RMD may be delayed to April 1 of the following year, but this will result in two RMDs in that year.)

Example 1: Age 73, Single IRA Account

Example 2: Age 80, Large Account Balance

Example 3: Multiple IRAs, Age 75

Example 4: QCD Strategy, Age 74

Example 5: Late First RMD, Age 73 with April 1 Election

• Calculate RMDs in January: Know your required amount at the start of each year to plan distributions strategically across months.
• Consider QCDs if charitably inclined: QCDs are the most tax-efficient way to satisfy RMDs—they reduce your AGI dollar-for-dollar compared to a cash donation with itemized deduction.
• Automate RMD withdrawals: Most brokerages offer automatic RMD calculation and distribution. Set up automatic transfers to avoid missing the deadline.
• Plan for IRMAA two years ahead: Medicare IRMAA is based on MAGI from two years prior. Model how current-year RMDs will affect premiums in two years.
• Coordinate RMDs with Social Security: Take larger RMDs in years before Social Security begins to reduce the tax impact on benefits.
• Convert to Roth before RMDs begin: Partial Roth conversions from ages 60-72 reduce future RMD amounts and can smooth taxable income across retirement years.
• Withhold taxes at the source: You can request federal (and state) tax withholding directly from your RMD distributions, avoiding estimated tax payments.

Required Minimum Distributions are a non-negotiable feature of pre-tax retirement accounts—understanding them is essential to avoiding costly penalties and managing your retirement tax burden effectively. The RMD Calculator gives you an accurate, up-to-date calculation based on the current IRS Uniform Lifetime Table, ensuring you know exactly what to withdraw each year.

Beyond compliance, RMD planning is an opportunity for tax optimization: timing distributions, using QCDs for charitable giving, converting to Roth before RMDs begin, and coordinating with Social Security and Medicare. Work with a tax advisor to develop a comprehensive RMD strategy that minimizes lifetime taxes.

Use this calculator annually—starting in January of each year—to stay on top of your RMD obligations and make informed decisions about your retirement income.