Quarterly estimated tax in Hawaii (2026)

A sole proprietor in Hawaii with $100,000 of profit pays the IRS about $4,621 a quarter, and owes $4,836 of Hawaii income tax for the year. Put in your own profit to get the four payments and their dates.

$4,621 a quarter

to the IRS. Four payments make $18,484 for the year, which meets 90% of this year's tax. This year's federal tax on this profit: $20,536 (income tax $7,254, self-employment tax $13,282).

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

IRS due	Income earned	IRS	Hawaii due	Hawaii
April 15, 2026	January 1 to March 31	$4,621	April 20, 2026	$726
June 15, 2026	April 1 to May 31	$4,621	June 22, 2026	$726
September 15, 2026	June 1 to August 31	$4,621	September 21, 2026	$726
January 15, 2027	September 1 to December 31	$4,621	January 20, 2027	$726
Year		$18,484		$2,904

Hawaii payments cover 60% of this year's state tax of $4,836, split 25%, 25%, 25%, 25% (Form N-200V). files.hawaii.gov, checked Oct 20, 2026 Estimates assume a single-member business with no withholding.

Hawaii estimated tax rules for 2026

If your Hawaii tax after withholding comes to $500 or more, the state wants estimatesfiles.hawaii.gov, checked Oct 20, 2026.
Pay by April 20, 2026, June 22, 2026, September 21, 2026, January 20, 2027files.hawaii.gov, checked Oct 20, 2026.
You avoid the penalty by paying 60% of this year's tax, or 100% of last year'sfiles.hawaii.gov, checked Oct 20, 2026.
Send them with Form N-200V, or pay on the state's website.

Payments at each profit

Profit	IRS each quarter	Hawaii for the year
$50,000	$2,034	$946
$100,000	$4,621	$2,902
$150,000	$7,844	$4,893
$250,000	$13,759	$9,200
$500,000	$33,975	$23,376

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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