If you earn 1099 or self-employment income in West Virginia, the IRS and the state both expect you to pay taxes as you go, in four quarterly installments rather than one April bill. This calculator estimates your 2026 quarterly payments across all three pieces: federal self-employment tax, federal income tax, and West Virginia state income tax. West Virginia cut its income tax rates again for 2026 under SB 392, with a new top rate of 4.58%. Enter your expected net self-employment income, any W-2 wages, and your filing status to see what to send each quarter, your due dates, and how the safe-harbor rules protect you from an underpayment penalty. Everything is an estimate for planning. Always confirm with the West Virginia Tax Division before you file.
Self-employment income has no tax withheld for you, so both the IRS and West Virginia Tax Division ask you to prepay in quarterly installments. On the federal side you owe self-employment tax (15.3% Social Security and Medicare on 92.35% of your net profit, up to the Social Security wage base) plus federal income tax on your profit after the standard deduction. On top of that, West Virginia applies its own income tax.
West Virginia sets its own threshold for when estimated payments become mandatory; check with West Virginia Tax Division for the current figure. West Virginia follows the federal schedule: April 15, June 15, September 15, and January 15. West Virginia follows the standard four-installment schedule.
You avoid an IRS underpayment penalty by hitting a "safe harbor": paying at least 90% of this year's total tax, or 100% of last year's (110% if your income is higher). West Virginia applies graduated rates (2.11%-4.58%) to your federal AGI after a $2,000-per-person exemption; it has no separate standard deduction. Rates reflect the 2026 cut under SB 392. Single and married filers use the same brackets. You can pay online through the West Virginia Tax Division portal, and the calculator above breaks your total into the federal and West Virginia pieces so you can send each to the right place. You can pay online at the West Virginia Tax Division (payment portal).
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For educational purposes only, not tax advice. Tax rules change and individual situations vary; confirm figures with a tax professional and the West Virginia Tax Division before filing. State tax data last verified 2026-07-05.
Sources: tax.wv.gov.