← Back to BillCut Daily

The Contribution Rules Most People Get Wrong

Persona #5 · Vol: 0

A Roth IRA can feel like the one account where the rules actually favor you: you put in money that's already been taxed, it grows tax-free, and qualified withdrawals in retirement come out tax-free too.

That's a rare deal, and it's exactly why the IRS puts an income ceiling on who gets to use it.

Cross that line and the door doesn't slam shut—it just changes shape.

For 2025, single filers can make a full Roth IRA contribution if their modified adjusted gross income stays under $150,000, with the ability phasing out completely at $165,000.

Married couples filing jointly get more room, with the full contribution allowed below $236,000 and the phase-out ending at $246,000.

The contribution cap itself is $7,000, or $8,000 if you're 50 or older.

Here's where people trip up: the limit applies to what's called modified adjusted gross income, not the number on your last pay stub.

That figure can shift once you add back certain deductions and foreign earned income.

Maxing out a year-end bonus, selling a rental property, or exercising stock options can quietly push you over the threshold without you noticing until tax season.

If you land in the phase-out range, you don't lose the whole contribution—you just get a smaller slice.

The allowed amount shrinks as income rises, and the IRS publishes a worksheet to calculate your specific number.

Guessing here is a bad idea, because excess contributions trigger a 6% penalty for every year the money stays in the account.

There's a workaround that's fully legal and widely used: the backdoor Roth.

You contribute to a traditional IRA, which has no income limit, then convert it to a Roth.

The catch is the pro-rata rule—if you already hold pre-tax money in a traditional IRA, part of the conversion becomes taxable.

An empty traditional IRA makes this clean.

One more trap: the income limits apply to contributions, not conversions.

There's no income cap on converting existing money to a Roth, so a high earner can still move funds over.

What they can't do is drop in a fresh $7,000 each January the way a lower earner can.

If your income bounces around—commissions, freelance work, a side gig—check the number before you contribute, not after.

Waiting until you file taxes to discover you overshot means unwinding the contribution, paying penalties, or scrambling to recharacterize it.

A five-minute check in January can save you a headache in April.

The rules aren't designed to punish success.

They're a boundary, and boundaries can be worked with if you understand where they sit. **The takeaway:** Most people who get burned by Roth IRA income limits didn't break a rule on purpose—they just never checked the number.

Final Thoughts

Know your modified AGI before you contribute, and the account stays a gift instead of a penalty.

Continue Reading