Calculate Required Minimum Distributions

A required minimum distribution is not just a retirement-account withdrawal. It is a deadline with tax consequences. Knowing how to calculate required minimum distributions helps you protect your retirement income, stay compliant with IRS rules, and avoid taking more from your accounts than your plan requires.

For many retirees, the math itself is straightforward. The harder part is understanding which accounts are subject to the rules, when your first distribution is due, which life-expectancy factor applies, and how the withdrawal fits into your larger tax plan. A distribution that satisfies the IRS requirement can still create an unnecessarily high tax bill if it is not coordinated with Social Security, pensions, investment income, and other withdrawals.

Who needs to take required minimum distributions?

Required minimum distributions, commonly called RMDs, generally apply to traditional IRAs, SEP IRAs, SIMPLE IRAs, and most employer-sponsored retirement plans, including 401(k), 403(b), and 457(b) plans. The rules apply because these accounts received tax-deferred treatment. Eventually, the IRS requires account owners to begin withdrawing a portion and reporting the taxable income.

Your starting age depends on your year of birth. For most people born from 1951 through 1959, RMDs begin at age 73. For those born in 1960 or later, the starting age is 75. Individuals who were already subject to RMD rules under earlier law may have a different applicable starting age.

Roth IRAs do not require lifetime RMDs for the original owner. Beginning in 2024, designated Roth accounts in employer plans, such as Roth 401(k)s, also generally do not require lifetime RMDs while the original owner is living. Inherited retirement accounts follow a separate set of rules, which can be much more complex.

If you are still working and participate in your current employer's plan, you may be able to delay RMDs from that specific plan until retirement. This exception does not usually apply if you own more than 5% of the business, and it does not eliminate RMDs from IRAs or retirement plans from former employers.

How to calculate required minimum distributions

The basic calculation uses two numbers: your retirement account balance at the end of the prior year and the applicable IRS life-expectancy factor.

RMD = December 31 prior-year account balance ÷ IRS distribution-period factor

For example, assume you are age 73 in 2026 and had a traditional IRA balance of $500,000 on December 31, 2025. Using the IRS Uniform Lifetime Table, the distribution-period factor for age 73 is 26.5.

$500,000 ÷ 26.5 = $18,867.92

In this example, your required minimum distribution for 2026 would be $18,867.92. You can withdraw more if it makes sense for your income needs or tax strategy, but you generally cannot withdraw less.

The IRS publishes life-expectancy tables, and the correct table matters. Most account owners use the Uniform Lifetime Table. If your sole beneficiary is a spouse who is more than 10 years younger than you, the Joint Life and Last Survivor Expectancy Table may produce a smaller RMD. Beneficiaries of inherited accounts may use a different table or a distribution schedule based on the type of beneficiary and the original account owner's age at death.

Because an incorrect factor can lead to an underpayment, do not rely on an old worksheet or a calculator that does not identify the tax year and table it uses. Retirement rules have changed several times in recent years.

Your account balance is measured on December 31

The value used in the formula is not your balance on the day you take the withdrawal. It is the fair market value of the account on December 31 of the preceding year. That means market gains or losses during the current year usually do not change the current year's RMD amount.

For instance, if your account declined after December 31, you still calculate the current year's RMD using the prior December 31 value. This can feel frustrating during a market downturn, but it is how the annual formula works. Thoughtful cash-flow planning can help reduce the need to sell investments at an unfavorable time simply to meet a distribution deadline.

Each retirement account needs attention

You must calculate the RMD for each applicable IRA separately. However, traditional IRA, SEP IRA, and SIMPLE IRA RMDs can generally be totaled and withdrawn from one or more of those IRA accounts. This can offer flexibility when deciding which investments to sell or which account should provide cash.

Employer plans are different. A 401(k) RMD generally must be taken from that individual 401(k) plan. You cannot usually satisfy a 401(k) RMD by taking extra money from an IRA. Rules for 403(b) accounts and inherited accounts have their own coordination requirements, so careful review is worthwhile when you hold multiple plans.

Know the first-year deadline and the tax trade-off

Your first RMD has a special deadline: April 1 of the year after the year you reach your applicable RMD age. Every later RMD is due by December 31 of that year.

Delaying the first RMD until April may sound appealing, but it can create two taxable distributions in one calendar year. You would take your delayed first RMD by April 1 and your second RMD by December 31. Two distributions may push more of your income into a higher tax bracket, increase the taxable portion of Social Security, or raise Medicare income-related premium costs.

For that reason, taking the first RMD during the year you become eligible is often worth considering. The better choice depends on your projected income, deductions, charitable plans, state taxes, and expected future tax rates. There is no one-size-fits-all answer.

How RMDs affect your tax return

Distributions from pre-tax retirement accounts are generally taxed as ordinary income. Your plan administrator may withhold federal income tax, but withholding does not reduce the RMD requirement. The gross distribution is what counts toward satisfying the required amount.

An RMD cannot be rolled over into another retirement account. Once the distribution is required, you cannot avoid the tax by moving that portion into another IRA. If you have after-tax basis in a traditional IRA from nondeductible contributions, part of the distribution may be nontaxable, but that calculation requires accurate records and IRS reporting.

For charitably inclined IRA owners age 70 1/2 or older, a qualified charitable distribution may be an effective option. A properly completed qualified charitable distribution can count toward an IRA RMD while excluding the transferred amount from taxable income, subject to annual limits and eligibility rules. It must be sent directly from the IRA custodian to the eligible charity. Taking the money personally and donating it afterward is not handled the same way for tax purposes.

Common RMD mistakes that can cost you

The most common mistake is missing the deadline because an account owner assumes the financial institution will automatically calculate everything correctly. Many custodians provide estimates, but the account owner remains responsible for taking the correct amount on time.

Other costly errors include using the wrong life-expectancy table, forgetting an old 401(k), failing to coordinate multiple inherited accounts, and assuming a spouse beneficiary follows the same rules as an adult child beneficiary. Inherited IRAs deserve special care. Many non-spouse beneficiaries must empty inherited accounts by the end of the tenth year after the original owner's death, and annual withdrawals may also be required during that period when the original owner had already begun RMDs.

The penalty for failing to withdraw enough can be significant. The excise tax is generally 25% of the amount not distributed, though it may be reduced to 10% if the error is corrected within the required correction period. Prompt action and proper reporting matter when a mistake occurs.

Use RMDs as part of a retirement-income plan

An RMD is a minimum, not a complete retirement strategy. Taking only the required amount may preserve assets, but it may also leave you with larger future RMDs, higher taxable income later, or less flexibility for heirs. On the other hand, taking additional distributions without a plan can accelerate taxes and reduce the funds available for long-term care, family needs, or legacy goals.

A coordinated review can help you decide whether to take distributions early in the year or later, pay estimated taxes or use withholding, make charitable gifts from an IRA, and manage withdrawals across taxable, tax-deferred, and tax-free accounts. It can also reveal whether Roth conversions, pension elections, life insurance protection, or other planning tools fit your household's goals.

At SkyVillage Financial, retirement planning begins with the practical questions: What income do you need, what taxes can be managed legally, and how can your savings continue protecting the people you love? An RMD should not be a surprise withdrawal. With accurate calculations and proactive tax planning, it can become one more controlled part of your path to lasting financial security.