Most retirees assume their retirement savings will go exactly where they want.
Unfortunately, that’s often not how it works.
When someone dies, 401(k)s, IRAs, and Roth IRAs follow a different rulebook than the rest of your estate. And if those rules aren’t understood ahead of time, a surprising amount of money can end up with the IRS — not your spouse, kids, or favorite causes.
Why Retirement Accounts Don’t Follow Your Will
Retirement accounts pass by beneficiary designation, not by your will or trust.
That means the names listed on your account paperwork override almost everything else. If those forms are outdated, missing, or poorly coordinated, your intentions may not matter.
Even when the right people are named, tax rules determine how much they actually keep.
The 10-Year Rule That Changes Everything
Under current law, most non-spouse heirs must fully empty inherited retirement accounts within 10 years.
There’s flexibility about timing inside that window, but by the end of year ten, the account must be gone — and fully taxed if it’s a traditional IRA or 401(k).
For adult children, this often means large withdrawals during their highest-earning years, pushing them into top tax brackets.
Spouses, on the other hand, are treated very differently. They can usually roll the account into their own and stretch taxes over a much longer period.
Why “Who Inherits” Matters More Than “How Much”
The same account balance can produce wildly different outcomes depending on the beneficiary.
A spouse often keeps far more after tax than an adult child. A Roth IRA often delivers far more value than a traditional account — even if the balances are identical.
This is why inheritance planning isn’t just about fairness.
It’s about tax efficiency.
The One Review That Makes the Biggest Difference
(single short bullet list)
- Confirm beneficiaries on every retirement account
- Decide intentionally which accounts go to a spouse vs. children
- Understand which accounts create taxes for heirs and which don’t
That’s it. Those three steps alone often have a larger impact than complex estate documents.
Why Roth Accounts Are So Powerful for Heirs
Roth IRAs are still subject to the 10-year rule for non-spouse heirs — but withdrawals are tax-free.
That means heirs can take money when they want, without stacking income or triggering higher tax brackets.
For many families, shifting even part of retirement savings into Roth accounts dramatically increases what children and grandchildren ultimately receive.
When Trusts Help — and When They Hurt
Trusts can be useful in certain situations, but they’re not automatically better.
In fact, poorly designed trusts can accelerate taxation and reduce flexibility for heirs. For many retirees, smart beneficiary planning does more good than adding complexity.
This Is an Afternoon Task — Not a Lifetime Project
This isn’t something that requires months of work.
In most cases, reviewing and aligning retirement account beneficiaries can be done in one afternoon — and it’s one of the highest-impact planning moves retirees can make.
Once a death occurs, nothing can be fixed.
The Real Goal: Peace of Mind
Good inheritance planning isn’t about control.
It’s about knowing your money will:
- Support your spouse
- Help your children instead of surprising them with taxes
- Reflect your values
A small amount of clarity now can prevent permanent mistakes later.