You can put money into a Roth IRA that you were never allowed to put there, and nothing stops you. The custodian does not ask to see your tax return. They do not know your income. They take the deposit, invest it, and send a friendly confirmation. Roth eligibility depends on your modified adjusted gross income, and most people do not know that number until the year is over and they sit down to do their taxes.
So a saver contributes the full amount in good faith in the spring. Then a bonus lands, or a spouse gets a raise, and income for the year comes in higher than expected. Part or all of that Roth contribution was never allowed. Sometimes the math is simpler. They contributed in two places, or forgot an earlier deposit and went over the limit. Either way the money is sitting in the account, looking perfectly fine, and it is not fine.
That is an excess contribution. Most people discover it the same way, at tax time, months after the deposit, when the numbers finally land on paper.
The IRS charges a six percent excise tax for leaving an excess contribution in place. It applies to the excess amount, and it applies again every year the excess stays in the account.
The word that controls this entire topic is deadline. There is a window where you can fix the excess and owe none of it. Correct it inside the window and the six percent never applies. Miss the window and it begins.
Here is where the timing trips people up. The deadline to correct an excess contribution is the due date of your tax return, including extensions. Not the end of the calendar year. The spring filing deadline is the date everyone fixates on, but file for an extension and your correction window stretches with it into the fall. There is a second rule on top of that. If you filed your return on time, you still get an automatic six months from the original deadline to remove the excess, as long as you file an amended return. The real window is usually longer than the spring date people panic about.
You have two ways to fix it inside that window. The first is a return of excess. You tell the custodian about the excess, and they send back that amount plus any earnings it produced while it sat there. For a Roth, the contribution itself comes back tax-free, because it was after-tax money. The earnings are different. They count as taxable income for the year the contribution was made, and the custodian calculates that figure for you. The early withdrawal penalty that once applied to those earnings no longer does for a timely correction, so a return of excess handled on time costs you nothing beyond tax on what the excess earned.
The second option is recharacterization, which only helps if a Traditional contribution would have been allowed. Instead of pulling the money out, you move the excess Roth contribution and its earnings into a Traditional IRA, and the IRS treats it as though it had gone there all along. That fixes a Roth contribution blocked by income. It does not fix one made with no earned income behind it. Same deadline either way, the due date of the return including extensions.
What happens if you do none of this in time? The six percent lands for that year, and the fix gets less graceful. After the window closes you take out just the excess amount. The earnings that ride along with a timely return of excess stay put. For a Roth, pulling out your own contribution dollars is tax-free and penalty-free. But you no longer escape the six percent for the year the money was already excess, and it keeps applying every following year until you withdraw the excess or let a future year of unused contribution room absorb it.
Picture a saver who contributes the full amount allowed to her Roth in March. The following February, doing her taxes, she finds that a bonus pushed her modified adjusted gross income into the Roth phase-out range. She was allowed only part of what she contributed. Three thousand dollars of it was excess.
Because she catches it in February, she is well inside the window. She calls her custodian and requests a return of excess. They send back the three thousand dollars plus the hundred and fifty it earned. The three thousand returns to her tax-free. The hundred and fifty counts as taxable income for the year she made the contribution. She owes the six percent on none of it, because she acted in time.
Now give the same story a later ending. She does not open her tax documents until the following autumn, after her correction window has closed. That same three thousand dollars is now subject to the six percent tax, a hundred and eighty dollars for that year. If she does nothing, it comes due again the next year, and the year after. The mistake did not change. The timing did.
An excess Roth contribution sounds like a serious offense. It has a penalty attached and the word excess in the name, and the instinct is to treat it as a permanent mark on your record. It is closer to one of the most forgiving mistakes in the whole retirement system. The correction window exists by design, and for a Roth the money coming back out is your own after-tax dollars, so the cleanup is rarely painful.
What actually matters is knowing which deadline you are working against. The contribution deadline and the correction deadline are not the same date, and the correction window usually runs longer than people assume. If you know an excess contribution happened, the question is never whether it can be fixed. It is whether you handle it before the window closes or after. One of those costs you a phone call. The other costs you six percent a year until you get around to it.
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Disclaimer This article is for educational and informational purposes only. It is not tax, legal, or financial advice and does not create an advisor–client relationship. Always consult appropriate professionals regarding your specific situation.