Oklahoma Quarterly Tax Calculator
Calculate your estimated quarterly tax payments for federal and Oklahoma state taxes. Designed for self-employed individuals, freelancers, and independent contractors.
OK State Tax: Progressive 0.3% - 4.8%
Quarterly Payment Amount
$6,429
Per quarter (4 remaining)
Annual Tax Breakdown
2026 Payment Schedule
Jan 1 - Mar 31
Due: April 15, 2026
$6,429
Apr 1 - May 31
Due: June 15, 2026
$6,429
Jun 1 - Aug 31
Due: September 15, 2026
$6,429
Sep 1 - Dec 31
Due: January 15, 2027
$6,429
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.
Oklahoma Quarterly Tax Highlights
Oklahoma has 6 tax brackets with rates from 0.25% to 4.75%
Top rate applies at relatively low income level
Oklahoma Quarterly Tax FAQ
What is Oklahoma's income tax rate?
Oklahoma has a progressive income tax with 6 brackets from 0.25% to 4.75%. The top rate of 4.75% applies to income over $7,200 (single).
Official References
This calculator uses current federal and Oklahoma tax rates and schedules:
- IRS Estimated Tax Guidelines
Federal quarterly tax requirements and Form 1040-ES
- Oklahoma Tax Commission
Official Oklahoma 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.