RMDs Explained: Ages, Account Types, and How the Amount Is Set

Pre-tax retirement accounts deferred taxes on the way in. Required minimum distributions are how federal rules eventually pull some of that money into taxable income. Once you reach a statutory age, most Traditional IRAs and pre-tax workplace balances must distribute at least a calculated amount each year. Sorted Finance frames an RMD as a compliance floor—not a spending recommendation and not proof the leftover balance will fund the rest of your life.

Tables, starting ages, and penalty rates can change. Examples use labeled assumptions. Confirm the year you are planning for with IRS publications or a qualified tax professional.

Map accounts before you map the calendar

Traditional IRAs, SEP IRAs, SIMPLE IRAs, and pre-tax 401(k)/403(b) balances generally sit on a lifetime RMD clock for the original owner. Inherited accounts follow different deadlines.

Roth IRAs do not require lifetime RMDs for the original owner. After SECURE 2.0, designated Roth 401(k) balances generally also no longer require lifetime RMDs while the participant is alive. Inherited Roth accounts can still have distribution deadlines.

Build a one-page inventory: custodian, account type, approximate balance, and whether the account is inherited. That list prevents the classic mistake of satisfying an IRA total while forgetting an old 401(k).

When the clock starts

SECURE 2.0 raised RMD ages in stages (age 73 or 75 depending on birth year under current law). Your first RMD year is tied to that age; the first deadline can extend into the following April 1, which can stack two taxable distributions in one calendar year if you delay. Many people take the first RMD in the year they turn the qualifying age to avoid the pile-up—run the tax math either way.

Put the deadline on a calendar with a reminder two months earlier so December markets or travel do not create a scramble.

How the dollar amount is set

A common owner formula is:

**Teaching sketch:** On December 31, January’s Traditional IRA balance was $480,000. For the distribution year in question, suppose the Uniform Lifetime Table factor is 26.5 (illustrative—use the official table for your age). RMD ≈ $480,000 ÷ 26.5 ≈ $18,113. Markets in the distribution year can rise or fall afterward; the calculation still keyed off last year’s ending balance.

Spouse-as-sole-beneficiary rules can use a different table when age gaps qualify. Always match the correct IRS table to your situation. Custodians often calculate a figure—you remain responsible for taking enough.

Aggregation: IRAs versus workplace plans

You typically calculate an RMD for each Traditional IRA, then may take the combined IRA total from one or more of those IRAs. Workplace-plan RMDs are usually satisfied from each plan separately. Do not assume an IRA check covers a 401(k) obligation.

If you still work for the employer sponsoring your current plan, ask whether a still-working delay applies to that plan only. Prior-employer plans and IRAs usually keep their own clocks.

Missing the minimum

Federal law can levy an excise tax on the shortfall—generally 25% under current rules, potentially 10% if corrected within the IRS window and other conditions are met. Fixing a miss is a forms-and-deadline problem; get professional help rather than guessing.

You may always withdraw more than the RMD from accounts that allow it. Extra pre-tax withdrawals are usually ordinary income and do not create a credit against next year’s calculation.

Planning angles (not advice)

• Coordinate RMDs with Social Security claiming and tax brackets.
• Consider QCDs if charitable giving already fits and you meet age rules.
• Roth conversions in earlier years can change future RMD size—trade taxable income now for less later.
• Keep beneficiary forms current; inherited rules are a separate maze.
• Decide whether to withhold federal tax from the distribution or pay estimates another way.

An RMD is a tax-compliance minimum. Spending needs, market risk, and Medicare IRMAA brackets are separate conversations that use the same dollars.

Timing within the year

Some retirees take the RMD early for simplicity; others wait, hoping markets rise (which can also fall). Sequence-of-returns risk matters more if you are also spending heavily from the same accounts. A labeled retirement calculator scenario can illustrate cash-flow needs beside the RMD floor—it cannot remove tax rules.

Withholding and estimated tax

An RMD can create a surprise April bill if nothing is withheld and you have no other withholding. Many custodians let you elect federal (and sometimes state) withholding on the distribution. Others prefer quarterly estimates. Coordinate with Social Security withholding and wage income if you still work part-time. The compliance goal is taking the minimum on time; the tax goal is not underpaying during the year.

What this guide cannot file

Sorted Finance cannot compute your official RMD or file your return. Plan administrators and IRA custodians often report calculated amounts—you remain responsible for taking enough on time.

The practical takeaway

List which accounts require lifetime RMDs, confirm your starting age, divide prior year-end balances by the correct factor, and satisfy IRA versus plan rules separately. Treat the distribution as a tax event to schedule—not as automatic permission to spend every dollar withdrawn.