Form 2210 is the IRS form used to determine underpayment penalties. You may need this form if:
- You're self-employed or have other income that isn't subject to withholding, such as investment income.
- You don't make estimated tax payments or paid too little.
- You don't have enough taxes withheld from your paycheck.
We automatically generate a Form 2210 if your return needs it. You can also add the form by following the instructions in this TurboTax FAQ here.
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