Direct Indexing in Arizona: Intel, TSMC, and the 26.3% Combined Rate

Arizona has the lowest income tax rate of any state that taxes capital gains — a 2.5% flat rate enacted by HB 2898 (2021). Combined with the 20% federal LTCG rate and 3.8% NIIT, top-bracket Arizona investors face a combined rate of approximately 26.3%. A.R.S. § 43-1022(22) provides a potential 25% deduction on qualifying long-term capital gains that could reduce the effective combined rate further to roughly 25.7% — verify with an Arizona-licensed CPA. For the semiconductor corridor in Chandler and Phoenix (Intel, TSMC, Microchip Technology), Raytheon's missile defense campus in Tucson, Arizona's retiree population managing IRMAA in Scottsdale, and the large flow of California transplants arriving with appreciated portfolios, direct indexing produces measurable annual after-fee tax savings at $500K+ in taxable assets.

Arizona's capital gains tax: what you pay in 2026

Arizona imposes a flat individual income tax rate of 2.5% under HB 2898 (2021). The flat rate applies uniformly to wages, salaries, interest, and investment income — including long-term capital gains. Arizona does not provide a separate preferential rate for long-term capital gains at the statutory rate level, though the 25% deduction under A.R.S. § 43-1022(22) effectively lowers the rate for qualifying gains.¹

Arizona imposes no city-level income tax on investment income. Whether you live in Phoenix, Scottsdale, Tempe, Chandler, Mesa, Tucson, or any other Arizona city, the combined state+local rate on capital gains from your investment portfolio is the flat 2.5% — no local surtax. This distinguishes Arizona from states like New York City (where the city adds 3.876% on top of the state rate) or Maryland's Montgomery County (which adds a 3.2% county rate).

At 26.3% combined, Arizona investors save 26.3 cents for every dollar of long-term capital gains harvested through a direct-indexed portfolio — versus 23.8 cents in Texas or Florida. That's an 11% premium per harvested dollar. Across a $2M taxable account generating $30,000/year in harvested losses (1.5% harvest rate), that gap is $750/year in additional tax savings compared to a Texas investor running the same strategy.

Break-even table: Arizona vs. CA, OR, and TX/FL

The following table shows estimated annual net benefit of direct indexing at a 1.5% annual harvest rate against a 0.25% fee premium over a low-cost ETF. The AZ column uses the 26.3% combined rate (2.5% AZ + 23.8% federal). These are approximations — actual harvest rates vary significantly with market conditions.

Assumes 1.5%/year harvest rate, 0.25% DI fee premium over a low-cost ETF. AZ column uses 26.3% combined rate (2.5% AZ flat + 23.8% federal). CA uses 37.1% (13.3% CA + 23.8% federal). OR uses 33.7% (9.9% OR + 23.8% federal, excluding Metro/Multnomah surtaxes). TX/FL uses 23.8% federal only. Note: if the ARS § 43-1022(22) 25% LTCG deduction applies, the AZ effective rate drops to ~1.875% state, giving a ~25.7% combined rate and a net benefit approximately $415 lower than shown in the AZ column above. Actual harvest rates vary significantly with market conditions. These are estimates, not guarantees.

Arizona's semiconductor corridor: Intel and TSMC

The Phoenix metropolitan area — specifically the East Valley cities of Chandler, Mesa, and Gilbert — is the largest semiconductor manufacturing cluster in the United States outside of Silicon Valley and Texas. The combination of Intel's decades-old Arizona operations and TSMC's recent $65 billion investment in two advanced-node fabs creates a large, concentrated population of semiconductor engineers and executives with substantial annual equity compensation.

• Intel Corporation. Intel's Chandler campus is one of its primary wafer fabrication centers globally, employing more than 12,000 workers and expanding with new fab capacity. Senior engineers and technical directors who have spent 10–20 years at Intel accumulate meaningful annual RSU grants in a company that has undergone significant stock price volatility. For an Intel employee with $1.5M in vested INTC shares alongside a direct-indexed taxable portfolio, the DI account provides a loss bank that offsets the long-term capital gains recognized as shares are sold after the 12-month holding period. At Arizona's 26.3% combined rate, each $10,000 of loss harvested saves $2,630 in taxes.
• TSMC Arizona. Taiwan Semiconductor's Phoenix fabs represent the largest foreign direct investment in U.S. manufacturing history. Senior engineers relocated from Taiwan under L-1 visa status — and U.S.-citizen hires at the director and VP level — are beginning to accumulate equity compensation in TSMC's ADR (TSM) through long-term incentive plans. As TSMC's Arizona workforce matures and more executives receive meaningful equity, the direct indexing use case mirrors what has proven valuable for semiconductor professionals in California and Washington State: a standing loss bank that absorbs LTCG from periodic TSM share sales.
• Microchip Technology. Microchip Technology's Chandler headquarters employs a large population of engineers and executives with equity grants tied to a company that has compounded significantly over the past 15 years. Senior employees may hold positions in MCHP stock acquired at much lower prices — a concentrated-position problem where a DI loss bank enables a multi-year, tax-efficient diversification program.
• ON Semiconductor (onsemi). This Scottsdale-headquartered power semiconductor company went through a major transformation under new management in 2020–2022 and saw its stock price increase significantly. Senior executives hired during or before the transformation hold meaningfully appreciated equity. At Arizona's 26.3% combined rate, the ongoing DI loss bank offsets the LTCG from systematic share sales during a multi-year diversification program.
• Vanguard's Scottsdale campus. Vanguard operates one of its largest non-Malvern campuses in Scottsdale, employing thousands of fund analysts, client services, and technology employees. While Vanguard employee equity compensation is more limited than at publicly traded companies, senior fund managers and technology employees receive meaningful annual awards. Of note: Vanguard's own Personalized Indexing platform is available for external investor use through Scottsdale-based advisors — and Vanguard employees understand the mechanics of TLH better than most investors.

Raytheon and Arizona's defense corridor

Tucson is home to Raytheon Missiles & Defense — the division responsible for Tomahawk, Stinger, Javelin, AMRAAM, and Patriot missile systems. With more than 13,000 employees at its Tucson campus, Raytheon is one of the largest private employers in Arizona and generates significant annual equity compensation for engineers, program managers, and senior directors.

• Raytheon Technologies / RTX. Raytheon Missiles & Defense (headquartered in Tucson) and Raytheon Intelligence & Space (significant Arizona presence) are major generators of annual RSU and stock option grants. Long-tenure Raytheon employees who have accumulated RTX shares over 10–20-year careers often hold positions that represent a disproportionate share of their net worth. A DI loss bank provides the mechanism to fund a gradual, tax-efficient exit: harvested losses each year offset the LTCG on RTX shares sold during a multi-year diversification program.
• Boeing Mesa. Boeing's Mesa campus is home to the AH-64 Apache helicopter program, employing several thousand engineers and manufacturing professionals. Senior Boeing employees with long-tenure equity grants face the same concentrated-stock problem as Raytheon employees: a standing DI account can absorb RSU vesting events and offset the LTCG from BA share sales.
• General Dynamics IT and Northrop Grumman. Both companies maintain significant Arizona operations supporting intelligence, C2 systems, and classified defense programs. Senior professionals at the director and executive level receive equity grants on par with comparable roles at Raytheon or Boeing — and the Arizona combined rate of 26.3% means every harvested dollar saves significantly more than the federal-only 23.8%.

California transplants: the loss bank deployment opportunity

Arizona has absorbed an enormous influx of California residents over the past decade — a migration driven by the combination of lower taxes, lower cost of living, no Proposition 13 disruption concerns for new housing, and remote work flexibility. For CA transplants who relocated with appreciated ETF portfolios, concentrated stock positions, or large embedded gains in real estate proceeds, Arizona represents both a tax improvement and a planning opportunity.

The key numbers for a California-to-Arizona relocation:

Relocating from California to Arizona reduces the per-dollar value of each harvested loss by about 29%. At $2M in taxable assets, the net annual DI benefit drops from $6,130 in California to $2,890 in Arizona. That's still clearly positive — but the more important consideration for CA transplants is what to do with the existing loss bank that may have been built pre-relocation, and how to handle the transition of appreciated ETF or mutual fund positions.

Domicile-year caution. California's Franchise Tax Board taxes capital gains on a residency-year sourcing basis. An investor who establishes Arizona domicile in May but sold appreciated assets in January while still a California resident owes California income tax on those gains. Gains recognized after the domicile change is fully established in Arizona are subject only to Arizona's 26.3% combined rate. The partial-year return requires careful coordination with CPAs licensed in both states — do not make large gain-recognition decisions in the year of relocation without professional guidance.

Arizona retirees: IRMAA management and the §1014 step-up

Phoenix and Scottsdale are among the top retirement destinations in the United States. The combination of warm weather, no state estate tax, and a relatively low income tax burden attracts retirees with substantial taxable investment portfolios from across the country. For this population, direct indexing offers benefits beyond pure loss harvesting: strategic gain recognition at the 0% federal rate, and lifetime setup for the §1014 stepped-up cost basis at death.

• IRMAA management. Medicare's income-related monthly adjustment amount (IRMAA) adds surcharges to Part B and Part D premiums for higher-income retirees. In 2026, the first IRMAA tier begins at $106,000 (single) / $212,000 (MFJ) in MAGI. Each IRMAA tier can add $594–$5,748/year per person in additional Medicare costs. A direct-indexed taxable account allows precise control over capital gain recognition in retirement: a specialist can model which lots to sell in each calendar year to keep MAGI just below the IRMAA cliff, preserving thousands in Medicare cost savings — a benefit that compounds over a 20–30-year retirement horizon.
• 0% gain harvesting. At the federal 0% LTCG bracket — up to $94,050 (MFJ) in 2026 — retirees with income below that threshold can harvest capital gains at zero federal tax cost. At Arizona's 2.5% flat rate, the state cost is $25 per $1,000 of gain recognized, but the basis step-up is permanent and eliminates the future tax liability on those positions. For retirees with significant unrealized gains in a DI portfolio, harvesting in low-income years is a powerful wealth-transfer mechanism.
• §1014 step-up at death. Arizona has no state estate tax and no state gift tax. At death, the entire direct-indexed portfolio receives a stepped-up cost basis to fair market value — eliminating all embedded gains on individual stock positions, regardless of how much appreciation occurred during the investor's lifetime. For a retiree with a $5M DI portfolio containing $2M of embedded gains, the step-up saves approximately $527,000 in combined federal+Arizona taxes (at 26.3%) that would otherwise be owed if the heirs sold all positions immediately. Combining systematic lifetime harvesting with this step-up is the core long-term wealth strategy for high-net-worth Arizona retirees.

Platform selection for Arizona investors

• Parametric Portfolio Associates (~$250K+ minimum, advisor-only) is the primary platform for Arizona investors with multi-account wash-sale complexity — semiconductor executives with RSU grants at multiple custodians, Raytheon employees with employer-stock positions running across deferred comp and brokerage accounts, or CA transplants with existing positions at multiple prior custodians. Parametric's cross-account coordination earns its all-in ~1.0–1.35% cost at $1M+ accounts.
• BlackRock Aperio ($1M+ minimum, advisor-only) is well-suited for Arizona investors with ESG customization requirements — defense contractor employees who want to exclude weapons from the benchmark, or investors with concentrated sector exposure in semiconductors who want to underweight the technology sector in their DI account while maintaining broad market beta.
• Vanguard Personalized Indexing (~$250K minimum, 0.20% platform fee) offers the most cost-efficient advisor-tier option for Arizona investors in the $250K–$2M range. At 26.3%, the lower fee floor means the net benefit is meaningfully positive even in low-volatility years. Vanguard's familiar brand also resonates with Arizona retirees already holding Vanguard fund portfolios who want to upgrade to a tax-managed SMA.
• Goldman Sachs TACS (~$250K minimum, 0.20% fee) is particularly valuable for CA transplants transitioning large ETF portfolios into direct indexing, because of TACS's ETF Look-Through feature (launched May 2025): the platform treats ETF positions held alongside the DI account as part of a unified portfolio, monitoring for wash sales across both the ETF holdings and the individual DI positions — a critical protection for investors in transition.
• Schwab Personalized Indexing ($100K minimum, 0.40% fee) and Wealthfront ($100K minimum, 0.25% all-in) provide accessible entry points for Arizona investors at $500K–$2M in taxable assets who don't yet have multi-account complexity. At 26.3%, both platforms produce clearly positive net outcomes at this balance range.
• Frec ($20K minimum, 0.09% fee) and Altruist Personalized Indexing ($2,000 minimum, no platform fee) are the best options for Arizona investors in the $100K–$500K range. At near-zero fee drag, even the 26.3% combined rate produces positive net outcomes at relatively modest harvest rates — making DI accessible to younger tech employees and mid-career semiconductor professionals who are building taxable wealth but haven't yet reached the $500K+ threshold for advisor-tier platforms.

Sources

1. Tax Foundation — Arizona 2026 Tax Profile. Arizona has a flat individual income tax rate of 2.5%, enacted via HB 2898 (2021). No state estate tax. No state gift tax. Sales tax: 5.6% base rate. The Tax Foundation ranks Arizona 14th overall on the 2026 State Tax Competitiveness Index. Combined LTCG rate at top federal bracket: 26.3% (2.5% AZ flat + 20% federal LTCG + 3.8% NIIT). Verified June 2026.
2. A.R.S. § 43-1022 — Arizona Revised Statutes: Subtractions from Taxable Income. Paragraph 22: allows a subtraction of 25% of net long-term capital gain for taxable years beginning after December 31, 2014, derived from assets acquired after December 31, 2011. Paragraph 21: allows a subtraction for net capital gains from investments in a qualified small business. These provisions appear in the current statutory text; confirm with an Arizona-licensed CPA whether they apply to your specific tax year and gain type post-HB 2898 flat-tax reform.
3. IRS Rev. Proc. 2025-32 — 2026 Inflation Adjustments. Federal LTCG thresholds for 2026: 20% rate at $545,500 (single) / $613,700 (MFJ). 0% rate: below $47,025 (single) / $94,050 (MFJ). NIIT threshold: $200,000 (single) / $250,000 (MFJ) — not inflation-adjusted. First IRMAA tier: $106,000 (single) / $212,000 (MFJ).
4. Tax Foundation — State Capital Gains Tax Rates Comparison. Arizona top LTCG rate: 2.5% flat (same rate for all income including capital gains). TX and FL: 0%. CA: 13.3%. OR: 9.9%. CO: 4.4%. NC: 3.99%. VA: 5.75%. Federal LTCG + NIIT at top bracket: 23.8%. AZ combined rate: 26.3% (without 25% LTCG deduction).
5. IRC § 1014 — Basis of Property Acquired from a Decedent. Under § 1014(a), property acquired from a decedent receives a stepped-up basis equal to fair market value at the date of death. Arizona has no state estate tax, so the federal step-up is fully effective in Arizona with no state-level clawback.
6. IRC § 1202 — Partial Exclusion for Gain from Certain Small Business Stock (QSBS). OBBBA (2025) made the 100% federal exclusion permanent and raised the per-issuer limit to $15 million. A.R.S. § 43-1022(21) provides a separate Arizona state subtraction for net capital gains from investments in a qualified small business — confirm with an Arizona-licensed CPA whether this deduction conforms to and covers OBBBA-era § 1202 gains for your specific situation.

Arizona flat income tax rate (2.5% per HB 2898) confirmed via Tax Foundation 2026 State Tax Competitiveness Index, June 2026. A.R.S. § 43-1022(22) 25% LTCG deduction appears in current statute text but interaction with HB 2898 flat-tax reform should be confirmed with an Arizona-licensed CPA. Break-even analysis uses the conservative 26.3% combined rate without applying the 25% deduction. Federal LTCG thresholds per IRS Rev. Proc. 2025-32 for tax year 2026. OBBBA provisions reflect federal law enacted July 2025. IRMAA tiers per CMS 2026 Medicare fact sheet. Harvest rate estimates (1.5%/year) based on industry research and may vary significantly with market conditions. This page is informational only and does not constitute financial, tax, or legal advice.