Kansas Stock Options Tax: 5.58% Top Rate, No State AMT, and No City Income Tax on the KS Side in 2026

Kansas taxes individual income in 2026 at two rates: 5.20% on the first $23,000 of taxable income ($46,000 for married filing jointly) and 5.58% on the excess — a structure enacted by Senate Bill 1, signed June 21, 2024 as part of Governor Kelly's tax reform package.¹ Most Kansas tech employees exercising significant option positions will be fully in the 5.58% bracket on option income. That puts Kansas modestly above Midwest peers like Ohio (2.75% flat), Indiana (2.95% flat + county), and Illinois (4.95% flat), while sitting well below California (13.3%), New York (10.9%), and Minnesota (9.85%).

Two features matter most for option holders. First, Kansas individual income tax starts from federal adjusted gross income (KSA 79-32,117) — and ISO exercise spreads are AMT preference items under IRC §56(b)(3), not ordinary income in federal AGI. That means ISO exercises generate no Kansas state income tax at exercise.² Second, Kansas has no state alternative minimum tax. Unlike Colorado (3.47% state AMT), Minnesota (6.75% state AMT on ISO spreads), California (7% CA AMT), or Connecticut, Kansas imposes no parallel AMT calculation on ISO exercises — the only tax analysis at exercise is the federal AMT.

For Kansas City area employees, there's a third point that often gets missed: the Kansas side of the metropolitan area — Overland Park, Leawood, Lenexa, Olathe, Shawnee, and Kansas City, Kansas itself — has no city income tax. Kansas City, Missouri (across the state line) levies a 1% earnings tax on all income earned in KCMO and on all KCMO residents. Garmin employees in Olathe and T-Mobile/Sprint legacy campus employees in Overland Park work entirely on the Kansas side and avoid this charge.

Kansas Income Tax Rates 2026: Two-Bracket System

Kansas Senate Bill 1, signed June 21, 2024 and effective for tax years 2024 and beyond, consolidated the prior three-bracket structure (3.1% / 5.25% / 5.7%) into two brackets.¹ For 2026:

• 5.20% on Kansas taxable income from $0 to $23,000 (single) or $0 to $46,000 (married filing jointly)
• 5.58% on Kansas taxable income above those thresholds

Kansas standard deductions for 2026: $3,605 (single), $8,240 (MFJ), $6,180 (head of household).¹ Social Security benefits are fully exempt from Kansas income tax for all taxpayers, effective TY2024. There are no high-earner surtaxes, no millionaires' brackets, and no additional investment income surcharges in Kansas — unlike Massachusetts (4% surtax on income above ~$1.08M) or Maryland (new 2% capital gains surtax for high earners).

Kansas individual income tax uses federal adjusted gross income as its starting point under KSA 79-32,117, with Kansas-specific additions and subtractions applied thereafter.² This federal AGI foundation is the reason ISO exercises — AMT preference items, not ordinary income — generate no Kansas state income at exercise.

ISO Treatment in Kansas: No State Income at Exercise, No State AMT

When you exercise an incentive stock option, the spread between your exercise price and the stock's fair market value is an AMT preference item (IRC §56(b)(3)), but it is not ordinary income in your federal return and does not appear in federal AGI for regular income tax purposes. Because Kansas starts its income calculation from federal AGI, ISO exercise spreads generate no Kansas income tax at exercise.²

Kansas also imposes no state alternative minimum tax — the only AMT calculation an ISO-exercising Kansas resident runs is the federal calculation. For 2026, the federal AMT exemption is $90,100 (single) / $140,200 (MFJ), with phaseout beginning at $500,000 / $1,000,000 (OBBBA parameters).⁶ Use the ISO AMT Calculator to find your safe exercise zone — the maximum spread you can exercise without triggering federal AMT given your other income. Unlike California (where ISO exercise simultaneously triggers CA ordinary income at up to 13.3% AND a 7% CA AMT), Kansas residents face only the single federal AMT calculation. That makes Kansas one of the cleaner ISO-planning states in the Midwest.

ISO qualifying disposition in Kansas

A qualifying ISO disposition — shares held at least 2 years from grant date and 1 year from exercise date (IRC §422(a)(1)) — converts the entire gain into long-term capital gain at the federal level, which appears in federal AGI. Kansas provides no preferential rate for long-term capital gains — all capital gains are taxed as ordinary income at 5.20%/5.58%.¹ On a $1M qualifying-disposition gain, a Kansas resident owes approximately $55,800 in state income tax (at the 5.58% rate). For comparison, the same outcome in Missouri generates $0 state tax (100% CG deduction via H.B. 594, effective TY2025). For California, it's approximately $133,000 (13.3% on qualifying LTCG). Texas: $0.

ISO disqualifying disposition in Kansas

A disqualifying disposition — selling ISO shares before meeting the 2-year grant / 1-year exercise holding requirement — converts the bargain element at exercise to W-2 ordinary income. Kansas taxes that W-2 income at 5.20%/5.58%. The post-exercise appreciation (if any) is short-term or long-term capital gain, also taxed at 5.20%/5.58% in Kansas. For Kansas residents, the qualifying-vs-disqualifying tax decision is driven almost entirely by the federal rate differential (LTCG at 0%/15%/20% vs. ordinary income at 32%–37%) — Kansas adds the same 5.58% either way, so the state doesn't change the direction of the decision, only its scale.

NQSO Treatment in Kansas: W-2 Ordinary Income at 5.20%–5.58%

Nonqualified stock option exercises are payroll events — the spread between strike price and FMV at exercise is W-2 ordinary income reported on your employer's payroll system, subject to federal income tax, FICA, and Kansas income tax at 5.20%/5.58%. Any post-exercise capital appreciation on shares you choose to hold is capital gain, also taxed at 5.20%/5.58% in Kansas.

No Long-Term Capital Gains Preference in Kansas

Kansas taxes all capital gains — short-term and long-term — as ordinary income at 5.20%/5.58%.¹ There is no Kansas LTCG subtraction, no holding-period preference, and no Kansas equivalent to Wisconsin's 30% LTCG exclusion or Arizona's 25% LTCG subtraction. The entire qualifying-vs-disqualifying ISO decision for Kansas residents operates at the federal level — the Kansas state rate adds the same 5.58% regardless of whether the gain qualifies.

The contrast with Missouri is notable. Missouri enacted a 100% capital gains deduction for TY2025+ (H.B. 594), making ISO qualifying dispositions $0 Missouri state tax. Kansas did not enact a comparable measure in SB 1 or subsequent legislation. A Garmin employee living in Olathe, Kansas pays 5.58% state tax on a qualifying-disposition sale; a counterpart living across the state line in Lee's Summit, Missouri pays $0 Missouri capital gains tax on the same gain. On a $1M qualifying disposition, that's approximately $55,800 more in Kansas than Missouri. This gap exists even though Missouri's ordinary income rate (4.7%) is lower than Kansas's (5.58%) — Missouri's 100% CG deduction specifically benefits ISO qualifying-disposition holders and QSBS investors.

QSBS in Kansas: Federal §1202 Conformity

Kansas starts from federal adjusted gross income under KSA 79-32,117.² Gains excluded from federal gross income under IRC §1202 do not appear in federal AGI and therefore do not appear in Kansas taxable income. Kansas imposes no state income tax on federally excluded QSBS gains.⁴ This puts Kansas in the same conforming tier as Illinois, Ohio, Indiana, New York, Wisconsin, and Missouri — and far ahead of California (which decoupled from §1202 entirely and taxes the full gain) and Oregon (which decoupled via SB 1507, signed April 2026).

Under OBBBA (effective July 4, 2025): tiered §1202 exclusion of 50% at 3 years, 75% at 4 years, 100% at 5+ years; $15M per-issuer cap; $75M gross asset limit at issuance. For Kansas startup founders and early employees who exercise with an 83(b) election at grant, the OBBBA-era §1202 rules can eliminate both federal and Kansas state tax on up to $15M of qualifying gain. At the 100% exclusion tier, a Kansas QSBS holder pays $0 federal and $0 Kansas state tax on up to $15M — versus approximately $1.995M in California (13.3% on the full $15M gain). For startup employees at Johnson County, Douglas County (Lawrence), or Wyandotte County companies with Kansas-based operations, QSBS planning through early exercise and 83(b) election remains one of the highest-return strategies available.

Kansas City, Kansas vs. Kansas City, Missouri: No City Income Tax on the KS Side

The Kansas City metropolitan area straddles the Kansas–Missouri state line. The Missouri side — Kansas City, Missouri — levies a 1% earnings tax on all compensation earned within KCMO's city limits and on all KCMO residents' income, regardless of where it's earned.⁵ This 1% charge applies to W-2 income including NQSO exercise spreads earned by KCMO employees. (It does not apply to ISO qualifying-disposition gains, which are capital income, not "earnings" in the KCMO earnings tax sense.)

The Kansas side — including Overland Park, Leawood, Olathe, Lenexa, Shawnee, and Kansas City, Kansas (Wyandotte County) — has no city income tax of any kind.⁵ Kansas does not authorize cities to levy income taxes. For employees at Kansas-side employers, this is a straightforward advantage: a Garmin employee in Olathe pays 5.58% Kansas state tax on a NQSO exercise; a KCMO-based counterpart pays 5.7% Missouri state tax + 1% KCMO earnings tax = effectively 6.7% combined state and city on W-2 spreads. For a $500K NQSO exercise, that's approximately $27,900 in Kansas vs. $33,500 in KCMO — a $5,600 difference from the city earnings tax alone, before considering Missouri's ordinary income rate (4.7%) vs. Kansas's top rate (5.58%).

Note that the KCMO earnings tax applies based on the physical location of work — if a Kansas resident crosses the state line and works in a Kansas City, MO office, their earned income attributable to KCMO workdays is subject to the KCMO earnings tax. Kansas does provide a credit for taxes paid to other states (KSA 79-32,111), which should generally offset the KCMO earnings tax against the Kansas state tax for KCMO commuters. Model the specific sourcing facts with a qualified advisor for large exercise events.

Nonresident Sourcing: Kansas Allocates Option Income by Workday Fraction

Kansas taxes nonresidents on Kansas-source income. For stock option compensation earned partly while working in Kansas and partly after relocation, Kansas uses a workday-ratio allocation: Kansas workdays during the grant-to-exercise period divided by total workdays during the same period.⁸ Nonresidents with Kansas-source income file Form K-40 with Schedule S, Part B.

Kansas-source income = exercise spread × (Kansas workdays during grant-to-exercise period ÷ total workdays during grant-to-exercise period)

California-to-Kansas relocators: California still follows you

If you relocated from California to Kansas and hold grants earned during California employment, the California FTB will assert California-source income on those grants when you exercise, based on the grant-to-exercise workday fraction attributable to California workdays. California's 13.3% rate makes the California sourcing claim the dominant cost on pre-move grants — far exceeding Kansas's 5.58%. Kansas provides a credit for taxes paid to other states, which generally allows the California nonresident tax to offset your Kansas tax liability on the same income. But if your California-source fraction is large, the California bill can exceed your entire Kansas liability — leaving no unused Kansas credit. Model both states' claims before exercising California-era grants as a Kansas resident.

Six Planning Strategies for Kansas Stock Option Holders

1. Use Kansas's clean ISO environment — exercise ISOs within your federal AMT safe zone

Kansas has no state AMT and no state income at ISO exercise. This means the only tax at exercise is the federal AMT — and only if your spread exceeds your available exemption. Use the ISO AMT Calculator to find your safe exercise zone: the maximum spread exercisable without triggering federal AMT. Unlike California, where ISO exercises trigger both CA ordinary income (up to 13.3%) and CA AMT (7%) on top of federal AMT, Kansas residents face only the federal calculation. Annual ISO exercise tranches within the safe zone lock in LTCG treatment with no immediate tax — a multi-year ladder can work down a large pre-IPO ISO position efficiently.

2. Coordinate NQSO exercises with the federal income bracket and FICA wage base

At 5.58%, Kansas's state rate adds meaningfully to a large NQSO exercise — but the federal rate (37% marginal) and Social Security tax (6.2% up to $184,500) are the larger factors. Primary planning levers: (a) if salary already clears the $184,500 SS wage base, exercising NQSOs in the same year saves the 6.2% employee share on the spread — approximately $11,460 per $184,500 of spread; (b) splitting large NQSO exercises across two calendar years can keep you in the 32% federal bracket rather than 37%, saving $25,000+ on $500K of spread; (c) using low-income years (parental leave, sabbatical) to exercise is as valuable in Kansas as anywhere else. Kansas's relatively low rate means the state tax is a secondary concern; federal bracket management drives most of the planning value.

3. Stack 83(b) election + early exercise for QSBS — Kansas conforms

Kansas startup founders and early employees can stack the 83(b) election with early exercise to simultaneously start the LTCG clock (1 year to LTCG treatment) and the §1202 QSBS holding period (3/4/5 years to 50/75/100% exclusion) from the same date. Kansas's conformity to §1202 means that federally excluded QSBS gains also escape Kansas income tax. The 30-day 83(b) window from exercise is absolute; missing it forfeits the strategy. For Wichita, Overland Park, or Lawrence startup employees, early exercise at a low 409A valuation with a §1202-eligible company can eliminate state and federal tax on up to $15M in qualifying gain. Verify §1202 eligibility (C-corp, active business, $75M gross assets, 5-year holding) with a qualified advisor before exercising.

4. Consider the Missouri border — qualifying-disposition ISO holders can save significantly by living in MO

For Kansas City metro employees who have flexibility in their residence, Missouri's 100% capital gains deduction (H.B. 594, effective TY2025) means ISO qualifying-disposition gains are $0 Missouri state tax — vs. 5.58% in Kansas. On a $500K qualifying ISO disposition, the Kansas–Missouri gap is approximately $27,900. This is not a trivial amount across a career of multi-year exercises and qualifying-disposition sales. The caveat: Missouri's CG deduction is legislative policy that future legislatures could repeal; Kansas's 5.58% rate is structural but not zero. For ISO holders with large qualifying-disposition gains accumulating, discussing residence-state optimization with a fee-only advisor makes sense. NQSO holders, by contrast, have no CG preference at either state level and should primarily optimize on the federal side.

5. For post-IPO diversification, use HIFO lot selection — Kansas's flat rate simplifies the analysis

Kansas taxes all capital gains at 5.20%/5.58% regardless of holding period or lot. When managing a post-IPO sell-down across multiple tax years, use HIFO (highest-in, first-out) or specific-identification lot selection optimized for federal tax efficiency — minimize federal gain recognition by selling highest-basis lots first. Kansas's flat rate adds the same 5.58% regardless of lot selection, so the Kansas variable doesn't change the ordering decision. Unlike California (where 13.3% creates state-specific lot optimization opportunities), Kansas residents can focus entirely on the federal 0%/15%/20% LTCG bracket thresholds (2026: $0–$49,450 at 0%, $49,450–$545,500 at 15%, above $545,500 at 20%)⁶ and NIIT ($200K/$250K threshold, 3.8%). The Kansas component follows the federal analysis automatically.

6. If you recently relocated to Kansas from another state, calculate your pre-move sourcing fraction before exercising

Grants issued before your Kansas start date have a sourcing fraction in your prior state. The prior state will assert a nonresident claim based on that fraction when you exercise, at the prior state's rate. If you relocated from California, that's 13.3% on the California-source fraction — the dominant cost, far exceeding Kansas's 5.58% on the Kansas-source fraction. As the grant-to-exercise period lengthens, the prior-state fraction shrinks and the Kansas fraction grows. Calculate your current sourcing ratios and determine whether waiting (at the cost of stock-price risk) reduces your prior-state exposure enough to matter. Kansas's credit for taxes paid to other states generally prevents true double-taxation, but the California bill can exceed your Kansas liability when California-era grants dominate.

1. Kansas income tax rates 2026: 5.20% on taxable income up to $23,000 (single) / $46,000 (MFJ); 5.58% on income above those thresholds. Standard deduction: $3,605 (single), $8,240 (MFJ). Enacted by Kansas Senate Bill 1 (signed June 21, 2024, effective TY2024), which consolidated the prior 3.1%/5.25%/5.7% three-bracket structure. No preferential rate for long-term capital gains; all capital gains taxed as ordinary income. Sources: Kansas Legislature: Summary of 2024 Special Session SB 1; Tax Foundation: State Individual Income Tax Rates and Brackets, 2026; RemoteLaws: Kansas Income Tax Rates 2025–2026.
2. Kansas individual income tax starts from federal adjusted gross income under KSA 79-32,117. ISO exercise spreads — federal AMT preference items under IRC §56(b)(3) that do not appear in federal AGI — generate no Kansas state income at exercise. Kansas has no state alternative minimum tax. Sources: Kansas Department of Revenue: Selected Kansas Tax Rates with Statutory Citation; KSA 79-32,117 — Kansas Adjusted Gross Income.
3. Missouri H.B. 594 (2025): 100% capital gains deduction for individuals, effective TY2025. ISO qualifying dispositions and NQSO post-exercise capital appreciation = $0 Missouri state tax. Missouri top ordinary income rate: 4.7% (2026). Source: Missouri Department of Revenue; Missouri Stock Options Tax Guide.
4. Kansas §1202 QSBS conformity: Kansas starts from federal AGI under KSA 79-32,117. Gains excluded under IRC §1202 do not appear in federal gross income or federal AGI, and therefore do not appear in Kansas taxable income. Kansas has not enacted any decoupling legislation from §1202 comparable to California (Revenue and Taxation Code §18152.5) or Oregon (SB 1507, April 2026). Sources: Keystone Global Partners: 2026 QSBS by State Eligibility Index; Kansas Department of Revenue conformity guidance.
5. Kansas has no city or local income taxes. Kansas statutes do not authorize municipalities to impose income taxes. Kansas City, Kansas (Wyandotte County) has no city income tax. In contrast, Kansas City, Missouri levies a 1% earnings tax on income earned in KCMO and on KCMO residents' income. Sources: KCMO Finance: Earnings Tax FAQs; Kansas Department of Revenue.
6. 2026 federal income tax brackets, LTCG rates, and AMT parameters per IRS Rev. Proc. 2025-32. LTCG thresholds (single): 0% to $49,450; 15% $49,450–$545,500; 20% above $545,500. AMT exemption: $90,100 (single) / $140,200 (MFJ); OBBBA phaseout thresholds: $500,000 (single) / $1,000,000 (MFJ) at 50% rate. Source: IRS Rev. Proc. 2025-32 — Tax Year 2026 Inflation Adjustments.
7. 2026 Social Security wage base: $184,500. NQSO exercise spreads are W-2 wages subject to 6.2% employee SS tax up to this limit. Source: SSA.gov — Contribution and Benefit Base 2026.
8. Kansas nonresident income tax sourcing. Kansas taxes nonresidents on Kansas-source income; stock option compensation earned while working in Kansas is sourced using a workday-ratio method under Schedule S, Part B of Form K-40. Sources: Kansas DOR: Part B — Nonresident Income Allocation; Kansas Form K-40 Instructions (KS DOR).

Values verified July 2026. Kansas income tax rates reflect SB 1 (signed June 21, 2024, effective TY2024). Kansas §1202 QSBS conformity is based on Kansas's federal AGI starting point and absence of decoupling legislation; confirm current conformity status with a Kansas-licensed tax advisor for specific QSBS transactions. Missouri H.B. 594 capital gains deduction is legislative policy subject to future change. All information is general and does not constitute tax or legal advice. StockOptionAdvisorMatch is a referral service, not a licensed advisory firm. Content is for informational purposes only.