West Virginia estimated tax payments for 2026
You have to make quarterly estimated payments if your estimated tax, reduced by any state tax withheld, is at least $600, unless that amount is less than 10% of your estimated tax.
The form is Form IT-140ES, and you can generally pay online instead of mailing it.
| Payment | Due |
|---|---|
| First payment | April 15, 2026 |
| Second payment | June 15, 2026 |
| Third payment | September 15, 2026 |
| Fourth payment | January 15, 2027 |
A penalty applies if you haven't paid 90% of this year's tax or 100% of last year's through withholding or estimated payments.