Quarterly estimated tax in Ohio (2026)

A sole proprietor in Ohio with $100,000 of profit pays the IRS about $5,032 a quarter. Put in your own profit to get the four payments and their dates.

$5,032 a quarter

to the IRS. Four payments make $20,128 for the year, which meets 90% of this year's tax. This year's federal tax on this profit: $22,365 (income tax $8,235, self-employment tax $14,130).

Ohio, 2026: $100,000 profit, single filer

IRS due	Income earned	IRS	Ohio due	Ohio
April 15, 2026	January 1 to March 31	$5,032	April 15, 2026	$0
June 15, 2026	April 1 to May 31	$5,032	June 15, 2026	$0
September 15, 2026	June 1 to August 31	$5,032	September 15, 2026	$0
January 15, 2027	September 1 to December 31	$5,032	January 15, 2027	$0
Year		$20,128		$0

Ohio income tax on this profit is $0, under the $500 that triggers state estimates, so no state payments are needed. Estimates assume a single-member business with no withholding.

Ohio estimated tax rules for 2026

If your Ohio tax after withholding comes to $500 or more, the state wants estimatesdam.assets.ohio.gov, checked Oct 23, 2026.
Pay by April 15, 2026, June 15, 2026, September 15, 2026, January 15, 2027dam.assets.ohio.gov, checked Oct 23, 2026.
You avoid the penalty by paying 90% of this year's tax, or 100% of last year'sdam.assets.ohio.gov, checked Oct 23, 2026.
Send them with Ohio IT 1040ES worksheet; pay with the Ohio Universal Payment Coupon (OUPC), or pay on the state's website.

Payments at each profit

Profit	IRS each quarter	Ohio for the year
$50,000	$2,190	$0
$100,000	$5,032	$0
$150,000	$8,462	$0
$250,000	$14,931	$0
$500,000	$38,343	$6,260

A sole proprietor or single-member LLC, single filer, no withholding, paying 90% of this year's federal tax and the state's own safe-harbor share.

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