When is my required beginning date for RMDs?

What is the required beginning date, and why do so many people stumble over it on the very first RMD? It’s the deadline for taking your first required minimum distribution, the slice of your tax-deferred savings the IRS finally makes you withdraw. The rule hides a trap in year one that can stack two years of forced income onto a single tax return.

When the clock starts

Your start age depends on your birth year under the SECURE 2.0 Act:

• Born 1951 to 1959: RMDs begin at 73.
• Born 1960 or later: RMDs begin at 75.

Your required beginning date is April 1 of the year after you hit that age. Every RMD after the first is due by December 31. So the first one comes with a special grace period, and that grace period is exactly where people get hurt.

The April 1 trap

Here’s the catch. You can defer your very first RMD to April 1 of the following year. It sounds like a free pass. It usually isn’t.

Take the deferral and you land two RMDs in one calendar year: the delayed first one by April 1, plus the regular second one by December 31. Two forced withdrawals stacked into a single tax return can push you into a higher bracket and feed your MAGI for IRMAA, the income-based Medicare surcharge that runs on a two-year lookback. The deferral that looked like a break becomes a tax bill with a multiplier.

I’d think hard before using it. The only time deferral tends to pay is when next year’s income is going to be dramatically lower, a sale of a business or a known income gap. Otherwise, take the first RMD in the year you turn the magic age and keep the income flat.

If your accounts are large

For a $3M+ retiree this isn’t a one-year decision, it’s the front edge of a decade-long problem. A large tax-deferred balance produces a large forced withdrawal, and that income only climbs as the balance compounds and the IRS divisor shrinks. The required beginning date is the day the bill finally comes due on taxes you spent thirty years deferring.

The fix happens before the date, not on it. Roth conversions in your 60s, while income is low, shrink the balance that gets divided later. A tax-efficient withdrawal order drains the right accounts first so the RMD lands smaller. None of it works as an April scramble.

The required beginning date is one of the rare deadlines that tells you it’s coming years ahead. Treat the first RMD as the opening move of a plan you built in advance, not a form you rush to file.