Finance · Kansas · Tax year 2026
Kansas Self-Employment Tax Calculator 2026
On $100,000 of 2026 self-employment profit, a single Kansas sole proprietor with no other income owes about $26,751: $14,130 of self-employment tax, $8,235 of federal income tax, and $4,386 of Kansas income tax. That is 26.8% of profit, or $6,688 for each quarterly estimated payment.
Against its neighbors, the same $100,000 of profit costs $750 less in Oklahoma and $1,682 less in Colorado.
- State income tax
- 5.2% to 5.58%
- Kansas tax on $100,000
- $4,386
- National rank
- #13 highest of 51
- Set aside on $100,000
- 26.8%
- State estimated payments
- Form K-40ES
- LLC filing fee
- $85
- State sales tax
- 6.5% + local
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Enter your net profit — revenue minus business expenses — to see how much to set aside and what to pay each quarter.
A 2026 planning estimate using the standard deduction, not a tax return: it ignores credits, itemized deductions, and AMT. All calculations happen in your browser. Nothing is stored.
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Kansas self-employment tax at common profit levels
2026 estimates for a single filer with no other income, using the standard deduction and no retirement or health insurance deductions. "Set aside" is the share of profit to move into a tax account; "Quarterly" is each of the four estimated payments.
| Profit | SE tax | Federal income tax | Kansas tax | Total | Set aside | Quarterly |
|---|---|---|---|---|---|---|
| $40,000 | $5,652 | $1,775 | $1,275 | $8,702 | 21.8% | $2,175 |
| $60,000 | $8,478 | $3,559 | $2,312 | $14,349 | 23.9% | $3,587 |
| $80,000 | $11,304 | $5,344 | $3,349 | $19,996 | 25.0% | $4,999 |
| $100,000 | $14,130 | $8,235 | $4,386 | $26,751 | 26.8% | $6,688 |
| $150,000 | $21,194 | $16,413 | $6,979 | $44,587 | 29.7% | $11,147 |
| $250,000 | $29,851 | $36,509 | $12,325 | $78,685 | 31.5% | $19,671 |
Married filing jointly
The same profit, earned by one spouse filing jointly with no other household income.
| Profit | SE tax | Federal income tax | Kansas tax | Total | Set aside | Quarterly |
|---|---|---|---|---|---|---|
| $40,000 | $5,652 | $398 | $552 | $6,602 | 16.5% | $1,650 |
| $60,000 | $8,478 | $1,885 | $1,518 | $11,881 | 19.8% | $2,970 |
| $80,000 | $11,304 | $3,550 | $2,492 | $17,346 | 21.7% | $4,336 |
| $100,000 | $14,130 | $5,335 | $3,529 | $22,993 | 23.0% | $5,748 |
| $150,000 | $21,194 | $9,795 | $6,122 | $37,112 | 24.7% | $9,278 |
| $250,000 | $29,573 | $25,154 | $11,468 | $66,196 | 26.5% | $16,549 |
How Kansas taxes self-employment income
Kansas starts from federal adjusted gross income (after the deduction for half of self-employment tax), then applies its own deductions, exemptions, and credits.
- Standard deduction: $3,605 single, $8,240 joint, $6,180 head of household
- Personal exemption: $9,160 single, $18,320 joint, $11,480 head of household
- Top rate: 5.58%; your bracket on $100,000 of profit is 5.58%.
2026 Kansas income tax brackets (single)
| Taxable income over | Up to | Rate |
|---|---|---|
| $0 | $23,000 | 5.2% |
| $23,000 | and up | 5.58% |
2026 Kansas brackets (married filing jointly)
| Taxable income over | Up to | Rate |
|---|---|---|
| $0 | $46,000 | 5.2% |
| $46,000 | and up | 5.58% |
Kansas vs its neighbors
The same $100,000 of 2026 profit for a single sole proprietor, run through each state's rules. Federal tax is the same everywhere, so the difference is state income tax. Against its neighbors, the same $100,000 of profit costs $750 less in Oklahoma and $1,682 less in Colorado.
| State | State income tax | Total tax | Set aside | vs Kansas |
|---|---|---|---|---|
| Kansas | $4,386 | $26,751 | 26.8% | — |
| Colorado | $2,705 | $25,069 | 25.1% | −$1,682 |
| Missouri | $3,373 | $25,737 | 25.7% | −$1,014 |
| Nebraska | $3,349 | $25,714 | 25.7% | −$1,037 |
| Oklahoma | $3,637 | $26,001 | 26.0% | −$750 |
How the gap changes with profit
Extra tax (+) or savings (−) for a single filer if the same business were based in each of its neighbors instead of Kansas.
| Profit | Colorado | Missouri | Nebraska | Oklahoma |
|---|---|---|---|---|
| $40,000 | −$533 | −$486 | −$463 | −$147 |
| $60,000 | −$916 | −$653 | −$654 | −$348 |
| $80,000 | −$1,299 | −$830 | −$846 | −$549 |
| $100,000 | −$1,682 | −$1,014 | −$1,037 | −$750 |
| $150,000 | −$2,639 | −$1,364 | −$1,516 | −$1,251 |
| $250,000 | −$4,275 | −$2,208 | −$2,503 | −$2,286 |
What's different about Kansas for the self-employed
- Kansas has no local income taxes. Head of household filers use the single rate schedule but get an extra $2,320 exemption.
- Dependent exemptions ($2,320 each) are not included.
- Kansas sales tax applies not only to goods but to labor services to install, apply, repair, service, alter or maintain tangible personal property, so many tradespeople must collect sales tax on labor.
- Kansas cut LLC formation fees in 2026: articles of organization now cost $85 online or $90 on paper.
- Kansas LLCs file an Information Report every two years (by April 15 of the even or odd year matching the formation year), not annually.
Kansas estimated payments and deadlines
Kansas collects its own estimated income tax with Form K-40ES, separately from the IRS. Required if your estimated Kansas tax after withholding and credits is $500 or more and your withholding and credits will be less than the smaller of 90% of this year's tax or 100% of last year's tax.
| Installment | Kansas due date | Share of the year | Federal due date |
|---|---|---|---|
| Q1 | April 15, 2026 | 25% | April 15, 2026 |
| Q2 | June 15, 2026 | 25% | June 15, 2026 |
| Q3 | September 15, 2026 | 25% | September 15, 2026 |
| Q4 | January 15, 2027 | 25% | January 15, 2027 |
The 2026 Kansas income tax return is due April 15, 2027.
File and pay through the Kansas Department of Revenue.
LLC fees and sales tax in Kansas
- Forming an LLC: $85 state filing fee.
- Information Report: a fee that depends on how you file, every two years, due by April 15 every other year.
- Sales tax: 6.5% statewide, plus local rates in many cities and counties. Use the Sales Tax Calculator to price a sale.
A single-member LLC is taxed exactly like a sole proprietorship unless it elects S or C corporation status, so the self-employment tax figures on this page apply either way.
Kansas self-employment tax FAQs
How much should I set aside for taxes if I'm self-employed in Kansas?
For a single filer with no other income, about 23.9% of profit at $60,000, 26.8% at $100,000, and 29.7% at $150,000 for 2026, covering self-employment tax, federal income tax, and Kansas income tax. Enter your own numbers in the calculator for a personal figure.
Does Kansas tax self-employment income?
Yes. Kansas taxes self-employment profit as ordinary income at 5.2% to 5.58%. Kansas starts from federal adjusted gross income (after the deduction for half of self-employment tax), then applies its own deductions, exemptions, and credits.
When are Kansas estimated tax payments due for 2026?
April 15, 2026, June 15, 2026, September 15, 2026, January 15, 2027, using Form K-40ES. Required if your estimated Kansas tax after withholding and credits is $500 or more and your withholding and credits will be less than the smaller of 90% of this year's tax or 100% of last year's tax.
How much does an LLC cost in Kansas?
The state filing fee to form an LLC is $85. Information Report: a fee that depends on how you file, every two years, due by April 15 every other year. A single-member LLC is still taxed like a sole proprietorship for federal purposes, so the self-employment tax figures above apply.
Sources and method
Computed with the Self-Employment Tax Calculator's 2026 engine and Kansas's rules from the sources below. Planning estimates, not a return. Last checked 2026-10-08.
- ksrevenue.gov/taxnotices/notice25-06.pdf
- ksrevenue.gov/taxnotices/notice24-08.pdf
- www.ksrevenue.gov/pdf/ip25.pdf
- www.ksrevenue.gov/pdf/k-40es26.pdf
- sos.ks.gov/forms/business_services/dl.pdf
- www.sos.ks.gov/businesses/information-reports.html
- www.ksrevenue.gov/bustaxtypessales.html
- sos.ks.gov/media/press-releases/2026/05-26-26-secretary-of-state-reduces-fees-for-kansans.html