If you earn too much to contribute to a Roth IRA directly, you've probably heard about the "backdoor" method — putting money into a traditional IRA, then converting it.
But a handful of rule adjustments rolling out this year are tripping up people who thought they had this figured out.
The IRS doesn't let you contribute to a Roth if your income crosses certain thresholds.
For 2026, the phase-out starts around $150,000 for single filers and $236,000 for couples filing jointly.
Above that, direct contributions get shut off entirely.
The backdoor maneuver exists because anyone can contribute to a traditional IRA and then convert it, regardless of income.
The "pro-rata rule." If you have any money sitting in a traditional IRA — even from an old job — the IRS looks at your entire balance when calculating taxes on the conversion.
So a $7,000 conversion can suddenly become partly taxable if you're holding $50,000 in a rollover IRA from a previous employer.
More workers rolled old 401(k)s into IRAs during the past few years, often without realizing it would complicate future backdoor contributions.
Financial planners say they're seeing a spike in people surprised by a tax bill they didn't expect.
The fix is usually straightforward but requires planning.
If your employer's 401(k) accepts incoming rollovers, you can move that old IRA money into the workplace plan before December 31.
That clears out the pre-tax balance and lets your backdoor conversion stay mostly tax-free.
The window matters — the IRS looks at your IRA balance as of December 31 of the conversion year.
Another wrinkle: the annual IRA contribution limit ticked up to $7,000 for 2026, with a $1,000 catch-up for anyone 50 or older.
For couples, that's potentially $16,000 moved into Roth accounts each year — real money growing tax-free for decades.
Timing also matters more than people think.
You can make your traditional IRA contribution for 2026 up until the tax filing deadline in April 2027.
But the conversion itself gets reported in the year it happens.
So a contribution made in early 2027 and converted immediately lands on your 2027 taxes, not 2026.
Mixing up those two years is a common filing mistake.
One more thing worth flagging: the "step transaction" doctrine.
The IRS technically wants to see some time pass between the contribution and the conversion, though in practice most people convert within days and rarely face issues.
Still, keeping clean records — Form 8606 for every year you make a nondeductible contribution — is non-negotiable.
Lose track of your basis, and you could pay taxes twice on the same money.
For high earners who've maxed out 401(k)s and are staring at a taxable brokerage account, the backdoor Roth remains one of the few remaining tax shelters available.
It's paperwork, deadlines, and a form most people have never heard of.
But for anyone planning to retire in the next 20 years, the difference between tax-free growth and taxed growth compounds fast.
The real takeaway: this isn't a set-it-and-forget-it move.
Check your IRA balances before you convert, clear out old rollovers if you can, and track your basis like it's a receipt you might need later.
Final Thoughts
A little planning in January saves a lot of pain in April.