Texas Stock Options Tax: What Dell, Apple, and Texas Tech Employees Need to Know

Texas is home to Dell, Texas Instruments, AT&T, Oracle (HQ relocated 2020), Apple's Austin campus, Tesla's Gigafactory, and a growing roster of tech companies that followed them. It's also the top destination for California tech workers seeking tax relief. For stock option holders, Texas is the cleanest state tax environment in the country. Four facts define the Texas landscape:

1. No state income tax — constitutionally prohibited. Texas Proposition 4 (2019) amended the state constitution to require a two-thirds vote of both legislative chambers plus majority voter approval before any personal income tax could ever be imposed. NQSO exercises and RSU vesting create ordinary income that costs $0 in Texas state tax.¹
2. No state capital gains tax — also constitutionally prohibited. Texas Proposition 2, passed November 2025, explicitly added a constitutional prohibition on any tax on realized or unrealized capital gains for individuals, estates, and trusts. ISO qualifying dispositions produce long-term capital gains that are $0 at the Texas level.²
3. No wealth, net worth, or franchise tax on individuals. Texas's franchise tax (margin tax) applies only to taxable entities like corporations and LLCs — not to W-2 employees. Texas Proposition 3 (2023) further enshrined a constitutional prohibition on any tax on an individual's wealth or net worth.³
4. Former California residents still face a California sourcing claim. California taxes stock option income based on workdays spent in California during the vesting period — a claim that survives your move to Texas. This is the most important gotcha for relocated tech employees.⁴

The result: Texas stock option holders only need to model federal taxes. There is no state overlay complicating the ISO vs NQSO vs qualifying-disposition analysis. That simplicity is genuinely valuable — and increasingly durable.

Federal vs Texas Treatment: Direct Comparison

Texas vs California vs Washington: The Real-Dollar Difference

For a Texas-resident employee exercising $500,000 in NQSOs, the state-tax comparison to California makes the case clearly:

For ISO qualifying dispositions, Texas is the clear winner over Washington. A $1,200,000 long-term capital gain from an ISO qualifying disposition costs Texas residents $0 in state tax. The same gain costs a Washington resident $64,540 in capital gains excise tax (after the ~$278,000 standard deduction). California residents would have paid ordinary income tax on the spread at exercise — potentially at 13.3%.

The Triple Constitutional Shield

Texas's tax advantages aren't just statutory — they're embedded in three layers of constitutional protection that require supermajority legislative votes plus statewide voter approval to unwind:

• Proposition 4 (November 2019): Amended Article 8 of the Texas Constitution to explicitly prohibit imposing an individual income tax without a constitutional amendment (two-thirds of each legislative chamber + majority voter approval). Passed with 74.7% of the vote.¹
• Proposition 3 (November 2023): Added a constitutional prohibition on any tax on an individual's net worth or wealth. Prevents wealth-tax proposals like those seen in California and national legislation.³
• Proposition 2 (November 2025): Added an explicit constitutional prohibition on any tax on realized or unrealized capital gains for individuals, estates, and trusts. HJR 6 (89th Legislature) was the enabling resolution, passed with bipartisan support and approved by Texas voters in November 2025.²

Compare this to Washington, where the income tax prohibition is newer, the capital gains excise tax arrived in 2021, the rate increased in 2025 (SB 5813), and a millionaires' income tax was signed in March 2026 (ESSB 6346, effective 2028). Washington is moving toward higher taxes; Texas is constitutionally moving away from them.

ISOs in Texas: Federal AMT Is Your Only Variable

For Texas residents holding ISOs, the planning framework collapses to federal taxes only. The ISO exercise decision is a pure federal AMT calculation:

• Exercise spread = AMT preference item (IRC §57(a)(3)). No regular income tax at exercise.
• Federal AMT at 26% on spread up to $220,700 (AMTI above exemption); 28% above that.
• 2026 AMT exemption: $90,100 single / $140,200 MFJ (OBBBA phaseout thresholds have been adjusted; consult our ISO AMT calculator for your specific numbers).
• No state AMT, no state AMT credit carryforward. Any AMT you pay is entirely federal Form 6251.
• Qualifying disposition at sale: federal LTCG rates (15% or 20%) + 3.8% NIIT. $0 Texas tax.
• Disqualifying disposition: spread becomes W-2 ordinary income. $0 Texas tax on the spread.

In California, ISO planning must layer state ordinary income tax (13.3%) on top of the federal AMT analysis — the CA "dual AMT" situation. In Texas, you model federal AMT, and that's it. For a large ISO holder, that simplification alone is worth thousands of dollars of advisory time per year.

QSBS in Texas: The Best Jurisdiction for Pre-IPO Founders

Under IRC §1202, as amended by OBBBA (July 2025), qualified small business stock gains are eligible for a federal exclusion of up to $15,000,000 per issuance, with tiered rates: 50% at 3 years, 75% at 4 years, 100% at 5 years. The gross asset limit remains $75 million at time of issuance.⁵

For Texas founders, the state-level QSBS picture is the simplest in the country:

• Federally excluded QSBS gains face $0 Texas state tax — because there is no Texas income or capital gains tax to be excluded from.
• Unlike California (which taxes QSBS gains as ordinary income at 13.3% regardless of federal exclusion) and unlike Washington's constitutional uncertainty around QSBS add-back bills, Texas creates zero incremental state-level QSBS planning. Your federal exclusion is your total gain exclusion.
• A Texas founder with a $15,000,000 QSBS-qualifying exit after a 5-year hold could potentially exclude 100% of the gain federally and pay $0 Texas state tax. Compare to California: the same founder pays $13.3% on the full gain despite the federal exclusion.

The California Sourcing Trap for Former CA Residents

The most important gotcha for Texas tech employees who relocated from California: your move to Texas does not eliminate California's claim on options that vested while you worked in California.

California sources stock option income — both NQSOs and ISOs — based on workdays spent in California during the vesting period. The formula is:

California taxable gain = Total gain × (California workdays during vesting period ÷ Total workdays during vesting period)

This means if you worked in California for 3 of the 4 years your options vested, California claims tax on 75% of your gain — even if you now live in Austin. The claim persists whether you exercise one year or five years after leaving California.⁴

Three scenarios where this matters:

1. You relocated from San Francisco to Austin and left unvested options behind. As those options vest post-move (remote from Texas, for a CA employer), each month of remote work may or may not be counted as California workdays depending on whether your employment is California-based. This is fact-specific — see the California FTB's nonresident sourcing rules.
2. You relocated and have vested-but-unexercised options. Options that fully vested before your move have a sourcing ratio already locked in. When you exercise, California will assert a filing obligation based on that ratio.
3. Your company IPOs after your move to Texas. If you held pre-IPO ISOs that vested 50% while you worked in California and 50% after you moved to Texas, California claims tax on approximately 50% of the gain from the CA-vested tranche — regardless of where you lived at exercise or sale.

Six Planning Strategies for Texas Stock Option Holders

1. Use the federal-only planning framework to optimize ISO timing. In Texas, the ISO exercise decision is a pure federal AMT optimization — no state overlay. Model the federal AMT impact of exercising ISOs in a partial-year tranche, using the annual AMT exemption and crossover point between regular tax and AMT. Our ISO AMT calculator models this directly.
2. Favor qualifying dispositions without reservation. In California, ISO qualifying dispositions can be worse than disqualifying (CA taxes ISOs as ordinary income at exercise). In Washington, large qualifying dispositions trigger the capital gains excise tax. In Texas, qualifying dispositions are clearly better than disqualifying dispositions when the holding periods are met — lower federal LTCG rates and $0 Texas tax vs higher federal ordinary income rates and $0 Texas tax.
3. Maximize QSBS positioning at Texas companies or for remote Texas workers. If you hold early startup equity that qualifies under §1202 (C-corp, gross assets ≤$75M at issuance, 5-year hold), the Texas environment gives you the full federal QSBS exclusion with no state tax on the remainder. The OBBBA $15M cap with tiered 100% at 5 years is the most favorable QSBS regime ever enacted. Stack an 83(b) election on early exercises to start the holding clock early.
4. Audit your California sourcing exposure before exercising. If you worked in California for any portion of your vesting period, calculate your CA sourcing ratio before exercising. Know what CA will claim, file a CA nonresident return in the exercise year, and pre-pay estimated CA taxes to avoid penalties. Do not wait for California to find you.
5. Plan large NQSO exercises without a state-tax urgency deadline. Unlike Washington residents (whose window closes December 31, 2027 before the millionaires' income tax arrives), Texas residents have no state-level deadline forcing exercise timing. Take time to model federal AMT, AMT credit recovery, and multi-year ordinary income stacking before exercising large NQSO tranches.
6. If you're evaluating a move to Texas, model the full picture. Texas's tax advantages are real — but the CA sourcing trap, federal AMT (which Texas doesn't reduce), and the remaining cost of any California filing obligations need to be quantified. The net benefit of relocation is typically still substantial for large option positions, but it's not the zero-state-tax blank slate that casual analysis suggests if you have CA vesting history.

Related guides

• California Stock Options Tax Guide — why CA taxes ISO exercises as ordinary income, the QSBS nonconformity, and the sourcing trap
• New York Stock Options Tax Guide — NY follows federal ISO treatment; NYC city tax and the convenience-of-employer rule
• Washington State Stock Options Tax Guide — no income tax through 2027, but the 7%/9.9% CGET catches ISO qualifying dispositions
• ISO AMT Calculator — model your federal AMT exposure before exercising
• ISO Exercise Timing Guide — qualifying vs disqualifying dispositions, AMT, and tranche strategies
• Pre-IPO Stock Options & QSBS — §1202, 83(b) stacking, OBBBA tiered exclusion

Sources

1. Texas Constitution, Article 8, §24-a, added by Proposition 4 (November 2019). Requires a constitutional amendment (two-thirds of both legislative chambers plus majority voter approval) to impose any personal income tax. Passed with 74.7% voter approval. See Ballotpedia — Texas Prop 4 (2019).
2. Texas Proposition 2 (November 2025), enabled by HJR 6 (89th Legislature, 2025). Added a constitutional prohibition on any tax on realized or unrealized capital gains for individuals, estates, and trusts. See Ballotpedia — Texas Prop 2 (2025).
3. Texas Proposition 3 (November 2023). Added a constitutional prohibition on any tax on an individual's net worth or wealth. See Ballotpedia — Texas Prop 3 (2023).
4. California Franchise Tax Board, Residency and Sourcing Technical Manual (Rev. 01/2026). Sourcing of stock option income to California based on ratio of California workdays to total workdays during the vesting period. See also FTB Publication 1100 (Taxation of Nonresidents and Individuals Who Change Residency), ftb.ca.gov/forms/misc/1100.html.
5. IRC §1202, as amended by the One Big Beautiful Bill Act (OBBBA, July 2025). Exclusion increased to $15,000,000 per issuance; tiered rates: 50% at 3 years, 75% at 4 years, 100% at 5 years. Gross assets at issuance threshold: $75,000,000. C-corporation requirement unchanged. Original eligibility rules under IRC §1202(a)–(e).

Values verified May 2026. Texas constitutional provisions cited above accurately reflect the state of Texas law as of the date of this publication. Federal tax values (AMT exemptions, LTCG rates, NIIT thresholds) are subject to annual adjustment. Confirm current-year values at IRS.gov before making any exercise decision.