State estimated tax due dates for 2026

Most states with an income tax follow the federal estimated-tax schedule (April 15, 2026, June 15, 2026, September 15, 2026, January 15, 2027), but some use different dates or uneven installments. Find your state below. Each page links to the official source.

Idaho: No quarterly estimated-payment requirement for individuals was found in Idaho's official materials. Form 51 may be used to 'make estimated payments for tax year 2026', and the 2025 Form 40 instructions list penalties only for not filing by the due date, not paying tax due on time, and not prepaying enough on extension returns (no underpayment-of-estimated-tax penalty is listed). To get a valid filing extension you must pay by the return due date at least 100% of the prior-year tax or 80% of the current-year tax. Source

Utah: Utah does not require quarterly estimated income tax payments from individuals. Instead, total prepayments (withholding, refunds applied, credits, and voluntary prepayments) made by the original return due date must equal the lesser of 90% of the current-year tax liability or 100% of the previous year's tax liability, or a 2%-per-month insufficient-prepayment (extension) penalty applies. Voluntary prepayments may be made with Form TC-546 or online. Source

No broad individual income tax on wages, so generally no state estimated payments: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, Wyoming.