State tax treatment of Opportunity Zone investments

Most states with an income tax follow them, but not all, and the answer depends on how each state ties its tax code to the Internal Revenue Code. The Opportunity Zone benefits live in IRC §1400Z-2: deferral of an eligible gain invested in a Qualified Opportunity Fund (QOF), a 10% basis step-up after five years (30% for a Qualified Rural Opportunity Fund), and exclusion of appreciation after a 10-year hold.¹ Those rules reduce federal taxable income. A state reaches the same result only if its own tax base starts from federal income and it has not carved the provision out.²

States conform to the federal code in three main ways, and the method drives the result.^3,4

The states consistently reported as not following, or only partly following, the federal rules are California, North Carolina, Massachusetts (personal income tax), Mississippi and New York, with Arkansas listed as limited conformity and Hawaii reported inconsistently. The table lists only states where our sources say something specific, and notes where they disagree.^5,6

States without a broad personal income tax, such as Texas and Florida, have no capital gains tax for an individual to defer, so conformity is not an issue for residents there. A state with a separate capital gains tax should be checked on its own terms.

California taxes the gain in the year of sale as if no QOF investment had been made. The Franchise Tax Board's instructions state that California does not conform to the deferral and exclusion of capital gains invested in federal Opportunity Zone funds under §§1400Z-1 and 1400Z-2 and has no similar provisions, and the corporate booklet says the same for corporations.^2,14

California's 2025 conformity bill, S.B. 711, updated the general conformity date but continued to decouple from Opportunity Zones, bonus depreciation and increased §179 expensing.⁷ Advocacy groups continue to push for conformity; a June 2026 brief argued conformity would bring gains for disadvantaged communities at modest revenue cost, but no enacted change was found.¹⁵ Because the appreciation is also taxable in California at exit, a California resident gets the federal 10-year exclusion but not a state one.

The cost is that state tax is due now rather than deferred, and appreciation is taxed at exit. Illustrative assumptions: an investor realizes $1,000,000 of long-term capital gain in 2027 and invests it in a QOF within 180 days. Federal rate 23.8% (20% plus 3.8% net investment income tax). California's top marginal rate is 13.3%.⁵ A hypothetical nonconforming state at a flat 5% is shown for comparison.

At year five, the federal inclusion is $900,000 after the 10% step-up ($214,200 at 23.8%). The California resident already paid state tax on the full $1,000,000 and gets no step-up. If the investment doubles and is sold after year 10, the $1,000,000 of appreciation is federally excluded but taxable in California, about $133,000 more at the top rate. See a full federal worked example for the federal side.

Rolling conformity states generally do; fixed-date states may not until they update. The current rules, including the rolling five-year deferral and the 10% and 30% step-ups, apply to amounts invested in QOFs after December 31, 2026.¹⁶ A state that adopts the IRC as of a date before July 4, 2025 has not adopted those amendments for its own tax. Practitioner surveys of state responses to Public Law 119-21 show states reacting provision by provision, with some adding back specific items and others updating their dates.^4,3

This creates two practical questions for 2027 investments in fixed-date states: whether state deferral follows a five-year rolling date, and whether the state recognizes the new zones designated for January 1, 2027. Neither has a general answer. We have not found state guidance resolving either point, so treat it as an open item for each fixed-date state.

Usually the state where the investor lives. Residents are taxed on income from all sources, so the residence state's conformity decides whether the original gain can be deferred.¹³ The project's state matters when it taxes nonresidents on gain sourced there, for example gain from selling real property located in the state, and for corporate investors filing in that state.^13,17

Moving changes the analysis. An investor who defers gain while living in a conforming state and later moves can face questions about which state taxes the deferred gain at inclusion; this is a fact-specific issue to confirm with your tax adviser.

For a data center fund, state conformity affects the investor's after-tax return, while the project's state affects operating economics through separate incentives. Many states offer sales and use tax exemptions for data center equipment, and those apply regardless of Opportunity Zone conformity. See state data center tax incentives and combining Opportunity Zones with other incentives.

Depreciation is the other state issue. Public Law 119-21 made 100% bonus depreciation permanent for property acquired after January 19, 2025, and data center electrical, mechanical and IT equipment is a large share of cost.¹⁸ States that decouple from bonus depreciation, California among them, require slower state depreciation, which changes the losses passed through to investors.⁷ For the federal side, see depreciation, bonus depreciation and Opportunity Zones.