What the SECURE Act’s 10-year rule actually did to inherited IRAs — and why it wasn’t in the headlines.
OK so here’s a story about how things get through Congress.
In December 2019, President Trump signed a bipartisan bill called the SECURE Act. SECURE stands for “Setting Every Community Up for Retirement Enhancement,” which is one of those extended government acronyms that suggests someone spent longer on the name than on the reading of the bill.
The public messaging around SECURE was uniformly positive. The bill let you contribute to IRAs after age 70. It let small businesses band together to offer 401(k) plans more easily. It let 529 plans pay for apprenticeships and student loans. It raised the RMD age from 70½ to 72 (later raised again to 73 by SECURE 2.0 in 2022, and eventually to 75 for younger cohorts). These were all popular, uncontroversial, and helpful for a lot of people.
Buried in the bill was one provision that received almost no coverage at the time, because it didn’t sound significant. The provision changed how non-spouse beneficiaries of retirement accounts had to take distributions from those accounts after they inherited them.
Before SECURE, if you inherited your parent’s IRA at age 55, you could stretch the distributions across your life expectancy — 29 years or so per the IRS tables. You had to take a small amount out each year, but the account could continue to grow tax-deferred for essentially the rest of your life. This was called a “stretch IRA,” which sounds like something discussed in an appendix, but which turned out to be one of the single largest wealth-preservation tools in the U.S. tax code.
The SECURE Act eliminated the stretch for most non-spouse beneficiaries. Under the new rules, inherited IRAs must be fully distributed within 10 years of the original owner’s death.
That’s the whole change. One sentence, one number, one deadline.
The mechanics don’t sound dramatic. The dollars are.
Anyway. Let’s think about what actually happens.
You have a traditional IRA. Say it’s $3 million by the time you die. You have three adult children as beneficiaries. Each of them inherits $1 million.
Pre-SECURE (anyone who died before 2020): each child could stretch that $1 million across their lifetime. Small annual distributions, most of the account continuing to compound tax-deferred, potentially decades of continued growth. The tax bill on the total was significant but smoothed across many years.
Post-SECURE: each child must fully distribute their inherited $1 million within 10 years. And here is the important part — the account keeps growing during those 10 years. So if the assets compound at 6% during the distribution period, each child actually receives about $1.35 million of distributions across the decade. The original $1 million, plus the growth.
Which happens to be, for most inheritors, the exact 10 years when they’re at their most expensive stage of life.
The typical high-balance IRA today is owned by someone in their 70s or 80s. The typical adult child inheriting is in their 50s or 60s. Which are, statistically, the peak earning years of a professional career. Which means the inherited distributions stack on top of a W-2 or business income that is already substantial.
Say the child earns $250,000 per year at their job. Their marginal federal bracket is 24% (MFJ, 2026 rates). Add $135,000 per year of inherited distributions from a $1M account growing at 6%, and their marginal bracket has jumped to 32% on the incremental income. Add state income tax and they’re paying somewhere between $40,000 and $50,000 per year in tax on distributions they didn’t choose to take, from an account they didn’t build, during the years they were busy building their own careers and paying for their own kids’ college.
Multiply that across 10 years. Across three children. Across the full inherited balance.
For a $3M starting IRA, heirs collectively receive around $4.3M in distributions over the 10-year window and pay approximately $1.1M in federal and state income tax on those distributions.
For a $5M starting IRA, heirs collectively receive around $7.2M in distributions and pay approximately $1.9M in tax.
For a $10M starting IRA — a category that’s growing rapidly, with the Joint Committee on Taxation reporting the $10M+ IRA cohort more than tripling to 10,196 taxpayers between 2019 and 2021 — the heir-phase tax alone is measured in the low millions.
There are exceptions to the 10-year rule, and they’re worth naming.
Spouses can still stretch the account over their lifetime via spousal rollover. (This is the widow’s cliff problem we’ve written about elsewhere — spouses avoid the 10-year rule but often walk into a different tax trap.)
Under pre-SECURE rules, a $3M IRA left to three children would likely have produced somewhere between $600,000 and $900,000 of total federal income tax across their lifetime distributions — heavily backloaded, spread across decades, at each child’s marginal rate.
Under post-SECURE rules, the same $3M IRA produces approximately $1.1M of federal tax across a 10-year window at peak-earning marginal rates.
The difference is not a policy detail. It’s a structural transfer of wealth from families to the federal government, worth somewhere in the low six figures on modest IRAs and the low seven figures on larger ones.
Congress didn’t hide the change exactly. It was in the bill’s text, available for anyone who wanted to read a 125-page act about retirement policy. It just wasn’t in the coverage of the bill, or the White House statement, or the retirement planning conversation most Americans have with their advisors.
Which is fine, in a sense. The tax code changed. It’s the taxpayer’s job to notice.
For most families with substantial retirement assets, noticing sooner rather than later matters. The 10-year rule combines with the widow’s tax cliff and the mandatory RMD structure to produce a lifetime family tax outcome that, under default planning, sends 50 to 65 percent of the original IRA principal to federal and state governments across the full family lifecycle. The full version of that analysis — including the specific planning architectures that address it — is the subject of our working memo. If you have $3M+ in traditional IRAs and want to see the analysis for your household situation, request the memo.
The ten-year window is real. It just happens to fall exactly during your children’s most expensive decade.
