Required Minimum Distribution Calculator

Mandatory Retirement Account Withdrawals

Required Minimum Distributions (RMDs) are mandatory withdrawals from traditional retirement accounts that the IRS requires once you reach a certain age. You can't leave money in tax-deferred accounts indefinitely—the government eventually wants to collect taxes on those pre-tax contributions and tax-deferred growth. The RMD calculator determines your annual required withdrawal based on account balances and IRS life expectancy tables, ensuring you meet obligations and avoid steep penalties.

RMDs affect retirement income planning significantly. They create taxable income whether you need the cash or not, potentially pushing you into higher tax brackets or increasing Medicare premiums. Understanding your RMD obligations helps you plan withdrawals strategically across all accounts to minimize tax impact.

The calculator computes your annual RMD and helps you understand how these requirements affect your overall retirement income strategy.

When RMDs Begin

The age at which RMDs begin has changed recently. Under current law:

If you turned 72 before 2023: RMDs should have begun at age 72. If you turn 72 after 2022: RMDs begin at age 73. Starting in 2033: RMDs will begin at age 75.

Your first RMD is due by April 1 of the year following the year you reach the applicable age. Subsequent RMDs are due by December 31 each year.

Important: Taking your first RMD by April 1 means you'll have two RMDs in that calendar year (the delayed first-year RMD plus the current year's RMD), potentially creating a tax spike. Consider taking your first RMD in the year you reach the applicable age to spread the income.

Accounts Subject to RMDs

RMDs apply to most tax-advantaged retirement accounts:

Traditional IRAs: The most common RMD scenario. 401(k), 403(b), 457 plans: Employer-sponsored retirement plans. SEP IRAs and SIMPLE IRAs: Self-employed retirement accounts. Inherited retirement accounts: Special rules apply (see below).

RMDs do NOT apply to:

Roth IRAs: No RMDs during the original owner's lifetime. Roth 401(k)s: Previously required RMDs, but recent legislation eliminated this starting in 2024.

The calculator handles various account types and their specific rules.

Calculating Your RMD

The basic RMD formula:

RMD = Account Balance (as of December 31 prior year) ÷ Life Expectancy Factor

The IRS provides life expectancy tables. The Uniform Lifetime Table applies to most account owners:

For a 75-year-old with a $500,000 traditional IRA: RMD = $500,000 ÷ 24.6 = $20,325

As you age, the divisor decreases, so RMD percentage increases. At 73, you withdraw about 3.8% of the account; at 90, about 8.2%.

The calculator applies the correct life expectancy factor based on your age and computes your exact RMD amount.

Multiple Accounts

If you have multiple traditional IRAs, calculate each account's RMD separately (based on each account's prior-year balance), but you can satisfy the total requirement from any combination of those IRAs. You might take all RMDs from one account while leaving others untouched.

This flexibility doesn't extend across account types. 401(k) RMDs must generally come from each 401(k) separately (though still-working participants may have exceptions). You can't use IRA withdrawals to satisfy 401(k) RMDs.

The calculator can handle multiple accounts and show both individual requirements and combined totals.

Spouse More Than 10 Years Younger

If your sole beneficiary is a spouse more than 10 years younger, you use a different (more favorable) life expectancy table. This produces lower RMDs because the calculation reflects two lifespans rather than one.

The Joint and Last Survivor Table provides longer distribution periods, meaning smaller required withdrawals. A 75-year-old with a 60-year-old spouse beneficiary might have a distribution period around 27.4 instead of 24.6—reducing RMD by approximately 10%.

The calculator adjusts calculations when this spousal exception applies.

Inherited Account RMDs

Inherited retirement accounts have different RMD rules, significantly tightened by the SECURE Act:

Surviving spouses: Can roll inherited accounts into their own IRAs, treating them as their own (no RMDs until their own RMD age) or keep them as inherited (with RMDs based on their life expectancy).

Eligible designated beneficiaries: Certain beneficiaries (disabled individuals, chronically ill individuals, minor children, beneficiaries not more than 10 years younger than the deceased) can stretch RMDs over their life expectancy.

Non-eligible designated beneficiaries: Most other beneficiaries must withdraw the entire account within 10 years of the original owner's death. Annual RMDs may be required depending on whether the original owner had begun RMDs.

The calculator can model inherited account scenarios with their specific rules.

Penalties for Missing RMDs

Failing to take required distributions triggers significant penalties—previously 50% of the shortfall, reduced to 25% under recent legislation (and 10% if corrected within two years).

If your RMD was $25,000 and you withdrew nothing, the penalty is $6,250 (at 25%). This is in addition to the tax you'll owe when you eventually withdraw.

The calculator helps ensure you don't miss RMDs by clearly showing annual requirements.

Tax Planning Around RMDs

RMDs create taxable income, affecting:

Tax bracket: Large RMDs might push you into higher brackets. Medicare premiums: Income above certain thresholds increases Part B and D premiums (IRMAA). Social Security taxation: Higher income increases the portion of Social Security benefits that's taxable. State taxes: RMDs count as income for state tax purposes too.

Strategic planning includes:

Roth conversions before RMDs begin: Converting traditional to Roth during lower-income years reduces future RMDs. Qualified Charitable Distributions (QCDs): Those 70½+ can direct up to $105,000 annually from IRAs directly to charity, satisfying RMDs without adding to taxable income. Tax-efficient withdrawal sequencing: Coordinate RMDs with withdrawals from Roth and taxable accounts to manage bracket exposure.

The calculator shows RMD amounts but planning for tax impact requires broader analysis.

Using the Calculator

Enter your age, account type, and prior-year-end balance. For married individuals with younger spouses as sole beneficiaries, indicate if the spouse is more than 10 years younger.

The calculator produces your current-year RMD and projects future years' RMDs (assuming consistent account balances—actual RMDs will vary with account growth or decline).

For multiple accounts, enter each separately to understand individual requirements and total obligations.

Model QCD scenarios to see how charitable giving satisfies RMD requirements while reducing taxable income.

Use results to plan withdrawal timing and coordinate with other income sources for tax-efficient retirement income.

---

RMDs enforce the tax collection the government deferred when you contributed to retirement accounts. The calculator determines your annual obligation, helping you meet requirements while avoiding penalties. Beyond compliance, understanding RMDs enables strategic planning that minimizes tax impact across your retirement years—taking control of mandatory withdrawals rather than letting them control your tax situation.