Estimated Tax - CLAW Tax Group

What Triggers an IRS Underpayment Penalty?

by Matthew Wildes, JD, CPA | Jul 23, 2026 | Tax Penalties & Relief

Read Time:8 Minute, 21 Second The IRS underpayment penalty applies when you have not paid enough tax throughout the year through withholding or estimated payments. It is not a late-filing penalty. It is not a failure-to-pay penalty. It is a separate charge under IRC...

What Triggers an IRS Underpayment Penalty?

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