Required Minimum Distributions (RMDs): Rules, Calculations & Strategies
Learn when RMDs start, which accounts require them, and how to take them with fewer tax surprises.
Use This Like a Tool
The point of this page is not more information. The point is better judgment before you act.
- Pull the real numbers first.
- Run a base case and a stress case.
- Use the result to make a cleaner decision, not a faster emotional one.
Quick Take
RMDs are mandatory withdrawals, not optional reminders. The real planning questions are when your first RMD starts, which accounts must take one, and how to satisfy the rule without creating unnecessary tax friction. The mistake is usually not the math. It is missing the calendar or taking the withdrawal from the wrong place.
Which accounts require RMDs and when
RMDs generally apply to:
- Traditional IRAs
- SEP IRAs
- SIMPLE IRAs
- Most pre-tax workplace retirement plans
Current law sets the first-RMD age at 73 for many retirees, with age 75 applying to younger birth years. The exact starting year depends on your birth year, so do not use a friend's age as your rule.
Just as important:
- Original owners do not have lifetime RMDs from Roth IRAs.
- Current law also removed lifetime owner RMDs from Roth money inside employer plans.
That means the account type still matters even after retirement.
How the RMD amount is calculated
The basic formula is simple:
Prior year-end balance
Start with the account balance on December 31 of the prior year.
IRS life-expectancy factor
Divide that balance by the factor from the IRS table that applies to you.
Most retirees use the Uniform Lifetime Table. If your spouse is your sole beneficiary and is much younger, a different table may apply.
The amount is not based on market conditions today or how much you want to spend. It is a formula tied to last year's balance.
The first-RMD timing trap
You can often delay your first RMD until April 1 of the following year. That sounds helpful, but it can backfire.
Why? Because the second year's RMD is still due by December 31 of that same year. Delay the first one and you may stack two taxable RMDs into one calendar year.
That can matter for:
- Income-tax brackets
- Social Security taxation
- Medicare premium surcharges
- Capital-gain planning
The April 1 rule is a tool, not a default.
Aggregation rules: where you can and cannot combine
This is where many retirees make avoidable mistakes.
Traditional IRAs
You can generally calculate each IRA's RMD separately and then take the total from one or more IRAs.
Workplace plans
401(k)s and similar plans usually must satisfy their RMDs separately.
403(b) plans
These have their own aggregation rules and need separate attention.
Inherited IRAs
These follow a different rule set and often cannot be mixed casually with your own IRAs.
The short version: do not assume every retirement account can be combined just because they look similar on a statement.
Tax-smart ways to handle RMD years
You do not control whether an RMD exists, but you do control how prepared you are when the first one arrives.
Do Roth conversions before RMD age if they fit
Once an RMD is due, the RMD itself generally must come out first and cannot be converted. That makes the years before RMD age more valuable for bracket management.
Use withholding intentionally
Some retirees use withholding on the RMD itself to cover quarterly tax needs. That can simplify cash management.
Consider qualified charitable distributions
If you give to charity and are old enough to use QCD rules, directing eligible IRA dollars to charity can satisfy some or all of the year's IRA RMD without increasing taxable income the same way a normal distribution would.
Reinvest the after-tax proceeds if you do not need them
An RMD does not have to be spent. It has to leave the retirement account. Many retirees move the after-tax amount into taxable investing instead of treating it as forced lifestyle inflation.
Common mistakes
- Missing the first-RMD year because of a wrong age assumption.
- Delaying to April 1 without noticing it creates two taxable RMDs in one year.
- Assuming a 401(k) can be aggregated with IRAs.
- Trying to roll over the RMD itself.
- Ignoring QCDs when charitable giving is already part of the plan.
- Forgetting that inherited IRAs follow separate distribution rules.
First-RMD checklist
1. Confirm the first distribution year
Use your actual birth year and account type, not a general retirement article.
2. List every account that may require an RMD
Separate your own IRAs, workplace plans, and inherited accounts.
3. Decide whether delaying to April 1 helps or hurts
Run the tax-year comparison before choosing.
4. Choose the funding source
If several IRAs exist, decide which one should provide the cash.
5. Set the calendar early
RMD mistakes are often administrative, not intellectual.
Bottom line
RMD planning is less about finding a loophole and more about preventing sloppy execution. Know when your first year starts, know which accounts can aggregate, and treat the April 1 option with caution. A clean RMD plan keeps the tax bill predictable and the rest of the retirement-income plan easier to manage.
Questions that matter before you act
Frequently Asked Questions
Under current law, the starting age is 73 for many retirees today, with age 75 applying to younger birth years. The exact answer depends on your year of birth and the account type.
It is generally based on the prior December 31 account balance divided by the IRS life-expectancy factor that applies to you.
Often yes, but delaying the first RMD into the next year can create two taxable RMDs in the same calendar year.
Traditional IRAs can usually be aggregated, but workplace plans often must satisfy their RMDs separately.
Original owners do not have lifetime RMDs from Roth IRAs, and current law also removed lifetime owner RMDs from designated Roth employer accounts.
Yes, for eligible IRA owners. A qualified charitable distribution can count toward some or all of the year's IRA RMD.