How Must I Take Distributions From My Twice-Inherited Traditional IRA?

A twice-inherited, or successor, IRA means three people have touched this account: the original owner who opened it, a beneficiary who inherited it when the original owner died (the second owner), and you, who inherited it when the second owner died. The rules governing your distributions depend on decisions and dates that were locked in before you were ever involved, which is exactly why this gets confusing. You can't just look at your own situation, you have to reconstruct what applied to the second owner first.

The first question is when the original owner died. If it was before January 1, 2020, the account started under the old, more generous stretch-IRA rules, which had no 10-year deadline at all, only required minimum distributions calculated over a life expectancy. If it was on or after January 1, 2020, the SECURE Act's 10-year rule framework applies from the start, and a 10-year deadline is already in play for almost everyone except a narrow set of Eligible Designated Beneficiaries.

The second question is when the second owner, the person you inherited from, died. This matters even if the original owner died before the SECURE Act, because the SECURE Act's rules for successor beneficiaries apply based on when the second owner died, not just the original owner. If the original owner died pre-2020 but the second owner died in 2020 or later, you as the successor beneficiary are pulled into a brand-new 10-year rule starting at the second owner's death, even though the account spent years under the old stretch rules. If both the original owner and the second owner died before 2020, you inherit under the old rules with no 10-year deadline at all, just an ongoing life expectancy schedule.

The third question, and the one people misunderstand most, is whether the second owner was an Eligible Designated Beneficiary (EDB) of the original owner. The EDB categories are narrow: a spouse, a minor child of the original owner, someone not more than 10 years younger than the original owner, or someone disabled or chronically ill. If the second owner was a Non-Eligible Designated Beneficiary, meaning most adult children, grandchildren, or other heirs, they were already required to fully distribute the account within 10 years of the original owner's death. As a successor beneficiary, you don't get a new 10-year window, you simply finish out the same 10-year period that was already running, measured from the original owner's death, not the second owner's.

If the second owner was an EDB, the outcome depends on a choice the second owner made, or was defaulted into, during their own lifetime: did they elect to use the 10-year rule instead of the life-expectancy stretch they were entitled to? If they elected the 10-year rule, you're in the same position as a successor to a Non-Eligible Designated Beneficiary, finishing the single 10-year window that started at the original owner's death. If the EDB second owner was instead stretching payments over their own life expectancy (the option most EDBs actually use, since it defers taxation longer), their death triggers a brand-new 10-year rule for you, the successor, measured from the second owner's death rather than the original owner's.

Layered on top of all of this is the question of whether the original owner had already reached their Required Beginning Date, the point at which they were required to start their own RMDs, before they died. If they had, then during the years leading up to the 10-year deadline (years 1 through 9), whoever holds the account, first the second owner, then you, must continue taking annual RMDs calculated using the IRS Single Life Expectancy Table, using whichever life expectancy produces the longer payout schedule between the original owner's and the second owner's. If the original owner died before reaching their Required Beginning Date, no annual RMDs are required during the 10-year window at all, only the requirement to empty the account by the deadline. This single fact, whether the original owner had reached their Required Beginning Date, is often the difference between owing an RMD every year and owing nothing until the final year.

Every one of the outcomes above still requires calculating the actual annual RMD amount correctly when one applies, using the appropriate life expectancy factor and, where required, the longer of the original or second owner's expectancy under what practitioners call the 'at least as rapidly' or ghost-life-expectancy rule. Getting the wrong life expectancy factor, or missing that an annual RMD is owed at all during years 1 through 9, is the single most common and most expensive mistake successor beneficiaries make with these accounts.

Before you do anything else with a twice-inherited IRA, get three facts in writing: the original owner's date of death, the second owner's date of death, and documentation of whether the second owner was an Eligible Designated Beneficiary of the original owner (and if so, whether they had elected the 10-year rule or were stretching payments). These three facts, not your own relationship to the second owner, determine your entire distribution schedule.

If you land in a scenario that requires annual RMDs during years 1 through 9, don't wait for a custodian to calculate this correctly on their own, many don't flag successor-beneficiary RMDs accurately, and missing one carries a real excise tax penalty. If you land in a scenario with no annual RMD requirement, resist the temptation to leave the account untouched until year 10, since a single large distribution in the final year is usually the most expensive way to take the money from a tax bracket standpoint.

• Assuming a successor beneficiary automatically gets a fresh 10-year window, when a successor to a Non-Eligible Designated Beneficiary (or an EDB who elected the 10-year rule) actually finishes the original 10-year period measured from the first owner's death.
• Not checking whether the original owner had reached their Required Beginning Date, and therefore missing a required annual RMD during years 1 through 9 of the 10-year window.
• Using the wrong life expectancy table or the wrong person's life expectancy when the 'at least as rapidly' rule requires the longer of the original or second owner's factor.
• Waiting until year 10 to take any distributions when annual RMDs weren't technically required, and taking the entire balance in one year at a much higher marginal tax rate than spreading it out would have produced.
• Not documenting the second owner's beneficiary classification and prior distribution election in writing, which becomes very difficult to reconstruct years later when a third owner needs to prove it to a custodian or the IRS.