Kansas Quarterly Tax Calculator
Calculate your estimated quarterly tax payments for federal and Kansas state taxes. Designed for self-employed individuals, freelancers, and independent contractors.
KS State Tax: Progressive 3.1% - 5.7%
Quarterly Payment Amount
$6,538
Per quarter (4 remaining)
Annual Tax Breakdown
2026 Payment Schedule
Jan 1 - Mar 31
Due: April 15, 2026
$6,538
Apr 1 - May 31
Due: June 15, 2026
$6,538
Jun 1 - Aug 31
Due: September 15, 2026
$6,538
Sep 1 - Dec 31
Due: January 15, 2027
$6,538
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.
Kansas Quarterly Tax Highlights
Kansas has 3 tax brackets with rates from 3.1% to 5.7%
Moderate tax rates compared to neighboring states
Use Form K-40ES for quarterly payments
Progressive system with three tiers
Kansas Quarterly Tax FAQ
What is Kansas's income tax rate?
Kansas has a progressive income tax with 3 brackets: 3.1% on income up to $15,000 (single) or $30,000 (married), 5.25% on the next bracket, and 5.7% on income above $30,000/$60,000.
Kansas Estimated Quarterly Tax Payments for Self-Employed Workers in 2026
Self-employed workers in Kansas must pay both federal estimated taxes to the IRS and state estimated taxes to the Kansas Department of Revenue. Kansas has a progressive income tax with 3 brackets and rates ranging from 3.1% to 5.7%. If you expect to owe $500 or more in Kansas state income tax after withholding and credits, you must make quarterly estimated payments using Form K-40ES.
Kansas requires estimated tax payments if you expect to owe at least $500 in state tax after withholding and credits. The state offers a standard deduction of $3,500 for single filers and $8,000 for married filing jointly.
| Tax Layer | Rate / Range | Filed With | Form |
|---|---|---|---|
| Federal income tax | 10% – 37% | IRS | 1040-ES |
| Self-employment tax | 15.3% | IRS | 1040-ES / SE |
| Kansas state income tax | 3.1% – 5.7% | Kansas Department of Revenue | Form K-40ES |
How Kansas Income Tax Affects Your Quarterly Payments
Kansas taxes personal income — including self-employment income — across 3 progressive brackets. The brackets below apply to single filers for tax year 2026. Married filing jointly thresholds are typically higher.
| Bracket | Taxable Income (Single) | Marginal Rate |
|---|---|---|
| 1 | $0 – $15,000 | 3.1% |
| 2 | $15,000 – $30,000 | 5.25% |
| 3 | $30,000+ | 5.7% |
To estimate your Kansas quarterly payment, calculate your projected state tax liability using the brackets above, then divide by four. Kansas payments are made to the Kansas Department of Revenue through their online portal at ksrevenue.gov or by mail using Form K-40ES.
Federal Self-Employment Tax and Quarterly Due Dates
All self-employed workers must pay federal self-employment (SE) tax of 15.3% on 92.35% of net earnings. This consists of 12.4% for Social Security (on earnings up to $184,500 in 2026) and 2.9% for Medicare (no cap). An additional 0.9% Medicare surtax applies to earnings above $200,000 (single filers).
Both Kansas and federal estimated tax payments follow the same quarterly schedule:
| Quarter | Income Period | Due Date |
|---|---|---|
| Q1 | January 1 – March 31 | April 15, 2026 |
| Q2 | April 1 – May 31 | June 15, 2026 |
| Q3 | June 1 – August 31 | September 15, 2026 |
| Q4 | September 1 – December 31 | January 15, 2027 |
To avoid underpayment penalties, pay at least 100% of your prior-year tax liability (or 110% if your AGI exceeds $150,000) spread across four equal payments, or at least 90% of your current-year tax. You can deduct 50% of your self-employment tax from your adjusted gross income, reducing both your federal and Kansas taxable income.
Related Calculators
Official References
This calculator uses current federal and Kansas tax rates and schedules:
- IRS Estimated Tax Guidelines
Federal quarterly tax requirements and Form 1040-ES
- Kansas Department of Revenue
Official Kansas 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.