Hawaii Quarterly Tax Calculator
Calculate your estimated quarterly tax payments for federal and Hawaii state taxes. Designed for self-employed individuals, freelancers, and independent contractors.
HI State Tax: Progressive 1.4% - 11.0%
Quarterly Payment Amount
$6,940
Per quarter (4 remaining)
Annual Tax Breakdown
2026 Payment Schedule
Jan 1 - Mar 31
Due: April 15, 2026
$6,940
Apr 1 - May 31
Due: June 15, 2026
$6,940
Jun 1 - Aug 31
Due: September 15, 2026
$6,940
Sep 1 - Dec 31
Due: January 15, 2027
$6,940
Don't miss your quarterly payments!
The IRS may charge penalties and interest if you underpay or pay late. Consider setting up automatic payments or calendar reminders.
Hawaii Quarterly Tax Highlights
Hawaii has 12 tax brackets with rates from 1.4% to 11%
One of the highest state tax rates in the country
Use Form N-1 for quarterly estimated payments
Complex bracket system with many rates
Hawaii Quarterly Tax FAQ
What is Hawaii's income tax rate?
Hawaii has a progressive income tax with 12 brackets ranging from 1.4% to 11%. The top rate of 11% applies to income over $200,000 (single) or $400,000 (married).
Official References
This calculator uses current federal and Hawaii tax rates and schedules:
- IRS Estimated Tax Guidelines
Federal quarterly tax requirements and Form 1040-ES
- Hawaii Department of Taxation
Official Hawaii tax authority
- IRS Self-Employment Tax
Social Security and Medicare tax information
This calculator provides estimates based on 2026 tax rates. Your actual tax liability may vary based on deductions, credits, and other factors. Consult a tax professional for personalized advice.