State estimated tax — 2026

Ohio Estimated Tax Payments 2026

Who has to make Ohio quarterly estimated payments, the 2026 due-date calendar, the safe-harbor rules that avoid an underpayment penalty, and how to pay through OH|TAX eServices.

Who must pay

Ohio wants Form IT 1040ES payments once your 2026 tax bill — total tax after credits, minus whatever Ohio withholding already covers — runs past $500.

2026 due-date calendar

Installment	% of annual estimate	Due date	Note
Q1	25%	April 15, 2026	—
Q2	25%	June 15, 2026	—
Q3	25%	September 15, 2026	—
Q4	25%	January 15, 2027	—

Ohio’s IT/SD 2210 does not test each quarter in isolation — it tests CUMULATIVE payments against a 25% / 50% / 75% / 100% schedule at each due date. Paying exactly 25% of the annual required payment each quarter satisfies the test, but falling behind in an earlier quarter still generates interest for that period even if you catch up later. Farmers and fishermen (at least ⅔ of gross income from that work, piggybacking on the federal test) avoid the penalty by paying in full by January 15, 2027, or by filing and paying their full return by March 1, 2027.

Safe harbor — avoiding the underpayment penalty

Ohio’s IT/SD 2210 interest disappears if your running total of withholding plus estimated payments hits 90% of your real 2026 liability or 100% of your 2025 bill by each due date — or if the whole year’s shortfall after withholding comes to $500 or less. That percentage pair holds steady no matter your income; Ohio builds in nothing extra for high earners. One wrinkle worth flagging: because the 100% route needs a timely-filed PRIOR Ohio return to qualify, someone filing an Ohio return for the very first time is stuck with only the 90% path.

How to calculate your payment

Estimate your annual Ohio tax, test it against the safe harbor above, then split the required annual payment across the installments in the calendar. The site's quarterly planner handles the math and the federal side together.

Open the quarterly estimated tax calculator → Check your underpayment penalty exposure →

How to pay

Pay online through OH|TAX eServices, or mail a check or money order with the Form IT 1040ES voucher.

Penalty basics

Ohio’s Tax Commissioner certifies a fresh annual interest rate every fall, set three points above the federal short-term rate from the preceding July. That figure lands at 7.0% (0.58% monthly) for calendar year 2026, easing back from 8% in 2025.

Ohio-specific notes

Ohio’s IT/SD 2210 form doesn’t test each quarter alone — it checks your RUNNING total against 25%, 50%, 75%, then 100% of what’s owed by each due date, so a shortfall early in the year still draws interest for that stretch even after later payments even things out.
Hundreds of individual Ohio cities run their own municipal income tax entirely apart from this state form — through RITA, CCA, or the city’s own office — with their own thresholds and schedules. Pull up Ohio’s own “The Finder” tool to check your specific municipality rather than assuming it mirrors anything on this page.
There’s no prior-year safe harbor available to a taxpayer filing in Ohio for the first time — the 100% option requires having filed a timely Ohio return the year before, so a first-timer has only the 90%-of-current-year path open.
Farmers and fishermen clearing the two-thirds gross-income bar dodge the penalty by paying everything in full by January 15, or by filing and settling their whole return by March 1, per Ohio Administrative Code 5703-7-04.

See the Ohio 2026 tax brackets for current rates, or the Ohio state tax calculator to estimate your full-year liability.

Frequently asked questions

When are Ohio estimated tax payments due in 2026?

The four Ohio due dates for 2026 are April 15, 2026, June 15, 2026, September 15, 2026, January 15, 2027. Ohio’s IT/SD 2210 does not test each quarter in isolation — it tests CUMULATIVE payments against a 25% / 50% / 75% / 100% schedule at each due date. Paying exactly 25% of the annual required payment each quarter satisfies the test, but falling behind in an earlier quarter still generates interest for that period even if you catch up later. Farmers and fishermen (at least ⅔ of gross income from that work, piggybacking on the federal test) avoid the penalty by paying in full by January 15, 2027, or by filing and paying their full return by March 1, 2027.

Does my Ohio IT 1040ES payment also settle my city income tax?

No. Hundreds of Ohio municipalities run their own separate income tax, collected through RITA, CCA, or the city directly — entirely apart from the state’s IT 1040ES. Use Ohio’s own “The Finder” tool to look up your specific municipality’s requirements rather than assuming they line up with the state rules here.

I’m filing an Ohio return for the very first time — is there a safe harbor for me?

Not the prior-year one. That route needs a timely-filed Ohio return from the year before, so first-time filers are limited to meeting 90% of their actual current-year tax instead.

Does Ohio check my estimated payments quarter by quarter, or against a running total?

A running total. Ohio’s IT/SD 2210 form measures your cumulative withholding-plus-payments against 25% by April 15, 50% by June 15, 75% by September 15, and 100% by January 15 — so an early shortfall still generates interest for that stretch, even once later payments bring the year’s total back into line.

How do I pay Ohio estimated tax?

Pay online through OH|TAX eServices, or mail a check with the Form IT 1040ES voucher.

Estimated tax in other states

Compare how Ohio stacks up against the other states with a Rising search trend for estimated-tax rules.