Opportunity Zone 2.0 vs OZ 1.0: What Changed Under the Big Beautiful Bill

Until mid-2025, the Opportunity Zone program was headed for sunset. The original deferral deadline was December 31, 2026, the designation map hadn’t been updated since 2018, and several of the original tax benefits had already expired. A lot of investors treated OZs as a closing window.

That changed on July 4, 2025 when the One Big Beautiful Bill Act (OBBB, Public Law 119-21) was signed into law. OBBB made Opportunity Zones a permanent part of the Internal Revenue Code and rewrote the tax benefits for any investment made on or after January 1, 2027. The industry now refers to the pre-OBBB rules as OZ 1.0 and the post-OBBB rules as OZ 2.0.

This guide explains what actually changed, what didn’t, and what investors with capital gains to deploy should understand about the transition.

The big picture

The core idea of Opportunity Zones — invest unrealized capital gains into a Qualified Opportunity Fund within 180 days, hold for a period of years, and receive federal tax benefits — is intact. OBBB didn’t repeal the program. It extended it, tightened some rules, added new incentives, and reset the designation map.

Three changes matter most:

1. The program is now permanent, not sunsetting in 2026.
2. The tax benefits have been restructured around a rolling 5-year deferral instead of a fixed calendar date.
3. A new set of census tract designations takes effect January 1, 2027, replacing the 2018 map.

Investments made before the transition date (December 31, 2026) still operate under the OZ 1.0 rules. Investments made on or after January 1, 2027 operate under OZ 2.0.

OZ 1.0: a refresher on the original rules

Before we get to what changed, here’s what OZ 1.0 actually offered. Investors who sold a capital asset and realized a gain could defer that gain by rolling it into a Qualified Opportunity Fund (QOF) within 180 days of the sale. In exchange, they received three potential tax benefits:

• Deferral. Tax on the original capital gain was deferred until the earlier of the date the investment was sold or December 31, 2026.
• Reduction. Holding the QOF investment for five years earned a 10 percent basis step-up on the deferred gain. Holding for seven years earned an additional 5 percent, for a total of 15 percent. Because the program was passed in late 2017 with a fixed 2026 deferral date, the seven-year step-up benefit effectively required an investment by the end of 2019, and the five-year step-up required an investment by the end of 2021. Both step-up windows have since closed.
• Elimination. Holding the QOF investment for 10 years or more meant that 100 percent of the appreciation on the QOF investment itself was excluded from capital gains tax. This was the big prize — a fully tax-free ride on any growth in the QOF investment after 10 years.

The QOF had to invest its capital in Qualified Opportunity Zone Business Property (QOZBP) or in Qualified Opportunity Zone Businesses (QOZBs). QOFs that didn’t keep at least 90 percent of their assets in qualifying property faced IRS penalties.

QOZBs themselves had a stack of rules: at least 70 percent of tangible property had to be QOZBP, at least 50 percent of revenue had to come from active business inside the QOZ, at least 40 percent of intangible property had to be used in the active business, non-qualified financial property was capped at 5 percent of average assets, and a list of “sin” businesses (gambling, massage parlors, liquor stores, country clubs) was prohibited.

The original QOZ designations were made in 2018. Each state’s governor selected eligible low-income census tracts, and Treasury certified them. The 2018 map identified 8,764 tracts across all 50 states, the District of Columbia, Puerto Rico, and five U.S. territories.

OZ 2.0: what OBBB actually changed

OBBB made four structural changes to the tax benefits and one big change to the designation process.

1. Permanence

The program no longer sunsets on December 31, 2026. Opportunity Zones are now a permanent part of the tax code. This is the most important change because it removes the artificial end-date pressure that had been collapsing the value of the program as 2026 approached.

2. Rolling 5-year deferral

Under OZ 1.0, the deferral of the invested capital gain ended on a fixed date — December 31, 2026 — regardless of when you made the investment. If you invested in 2022, you got four years of deferral. If you invested in 2024, you got two years. If you invested in early 2026, you got a few months.

Under OZ 2.0, the deferral is rolling. You defer the gain for five years from the investment date, no matter when you invest. A QOF investment made on January 15, 2027 defers the original gain until January 15, 2032. The clock is tied to your investment, not to the calendar.

This materially improves the time value of the deferral for investors who realize gains later in the program’s life.

3. Restructured basis step-up, with a rural bonus

OZ 1.0 offered a 10 percent basis step-up after five years and a 15 percent step-up after seven years. Both of those windows closed years ago because of the fixed 2026 deferral date.

OZ 2.0 resets the basis step-up around the rolling 5-year window:

• Standard QOF investment: 10 percent basis step-up on the deferred gain after holding the QOF investment for five years.
• Qualified rural QOF investment: 30 percent basis step-up after five years — three times the standard benefit, designed to pull more capital into rural communities.

The rural bonus is a new incentive specifically added by OBBB. Treasury is expected to issue guidance on what qualifies as a “qualified rural QOF” (generally, QOFs that substantially invest in QOZs located outside Metropolitan Statistical Areas).

4. 30-year cap on the 10-year exclusion, plus automatic step-up

The 10-year tax-free appreciation benefit was the centerpiece of OZ 1.0, but it had limits. Under the original rules, the exclusion had a hard 2047 sunset, and investors had to actually sell the QOF interest to realize the step-up to fair market value.

OZ 2.0 changes both. The 10-year exclusion is now capped at a rolling 30-year window from investment, not a fixed 2047 calendar date. And after 30 years, the basis automatically steps up to fair market value — no sale required. If you hold beyond 30 years, future appreciation is taxable as ordinary gain, but the 30-year accrued appreciation is already locked in tax-free.

This is a meaningful improvement for investors in long-duration real estate deals, who may want to hold well past 10 years but were pushed toward a sale by the old 2047 cliff.

5. A new designation map, effective January 1, 2027

The biggest operational change is the new census tract designation process. OBBB created a 10-year rolling designation cycle. The first OZ 2.0 designation cycle works like this:

• July 1, 2026: 90-day governor nomination window opens. Each state has until the end of September to submit tract nominations to Treasury.
• Late 2026: Treasury reviews and certifies the nominations.
• January 1, 2027: New OZ 2.0 designations become effective.

Eligibility criteria have tightened. Under OZ 1.0, a tract could qualify if median family income was at or below 80 percent of the applicable reference (state or metro area). Under OZ 2.0, the threshold drops to 70 percent. Tracts that qualify through the alternative poverty-rate pathway (20 percent or higher poverty rate) are now disqualified if median family income exceeds 125 percent of the reference.

OBBB also eliminated the “contiguous tract” option, which had previously allowed states to designate non-low-income tracts that were adjacent to qualifying tracts. And it eliminated the blanket designation of all census tracts in Puerto Rico, which had accounted for a large share of the original OZ 1.0 map.

Because of these tightened criteria, the total number of designated tracts is expected to drop from 8,764 under OZ 1.0 to approximately 6,500 under OZ 2.0 — a reduction of roughly 25 percent. States can nominate no more than 25 percent of their eligible tracts, so the final map will be a subset of what’s technically qualifying.

What didn’t change

Several important elements of OZ 1.0 are preserved under OZ 2.0:

• 180-day investment window. You still have 180 days from the date of a capital gain realization to invest into a QOF.
• Form 8997. You still file Form 8997 with your return to track the deferral election.
• 10-year hold for 100 percent exclusion. The core benefit — holding for 10 years or more to eliminate tax on QOF appreciation — is unchanged.
• QOZB and QOZBP rules. The substantive rules on what a QOF can invest in, what a QOZB must do to qualify, and the list of prohibited sin businesses are carried forward.
• December 31, 2026 deferral recognition date for OZ 1.0 investors. If you invested in a QOF under OZ 1.0, your deferred capital gain is still due to be recognized on December 31, 2026. OBBB did not push that date out for existing OZ 1.0 investors.

That last point is worth emphasizing. If you’re holding an OZ 1.0 QOF position, you’re still on the original deferral clock. OZ 2.0 is not retroactive. Your 2026 tax bill on the deferred gain is coming.

What this means for investors

For investors thinking about OZ for the first time, OZ 2.0 is a materially better program than OZ 1.0 was in 2026. The benefits are durable (permanent, rolling, with automatic step-up), and the deferral clock is tied to your investment instead of a closing calendar window.

For investors currently holding OZ 1.0 positions, the key planning considerations are:

1. The December 31, 2026 deferral recognition is still coming. Model your 2026 tax bill now. This is unchanged.
2. Your 10-year hold on existing OZ 1.0 positions still applies. Continue to hold if the exclusion at year 10 is the plan. Pre-2027 investments follow OZ 1.0 rules, including the 2047 sunset on the 10-year exclusion unless you roll into a new structure.
3. New capital can wait for OZ 2.0. If you have an upcoming gain that doesn’t fit the 180-day window before Dec 31, 2026, letting it roll into 2027 under OZ 2.0 rules may be more favorable — particularly if rural deals are on the table.

For investors deciding where to invest, the window between now and January 1, 2027 is mostly about preparation: understanding which census tracts are likely to be designated, which fund sponsors are positioning for OZ 2.0, and which deals fit the rural bonus structure.

The transition window: April 2026 to January 2027

The next nine months are a transition period. OZ 1.0 is still active. Governors are preparing their OZ 2.0 nominations. Treasury and the IRS are expected to issue additional guidance on the OZ 2.0 rules, including the rural bonus definition and the automatic 30-year step-up mechanics.

The designation calendar gives investors a predictable path:

• Now → June 30, 2026: States finalize internal selection processes. Several states (including Delaware, which launched its public OZ 2.0 mapping tool on April 15, 2026) have already published eligibility tools.
• July 1 → September 30, 2026: 90-day governor nomination window. States submit tract nominations to Treasury.
• October → December 2026: Treasury review and certification.
• January 1, 2027: New OZ 2.0 designations take effect. OZ 2.0 tax rules apply to all new QOF investments from this date forward.

If you’re sitting on unrealized gains and thinking about Opportunity Zones, the practical approach is to know which tracts in your target markets are eligible, track which get nominated, and be ready to deploy into a QOF as soon as the new map goes live.

Bottom line

OZ 2.0 is a meaningfully better program than OZ 1.0. It’s permanent, the deferral is rolling, the basis step-up is simpler, the 10-year exclusion is extended to a rolling 30-year window with automatic step-up, and rural deals get an enhanced benefit.

The designation map shrinks by roughly 25 percent, and the eligibility criteria are tighter. Existing OZ 1.0 investors are not migrated to OZ 2.0 — the old rules continue to apply to pre-2027 investments.

For anyone with capital gains and a long horizon, OZ 2.0 deserves a serious look as the January 1, 2027 effective date approaches.

Sources: Plante Moran: The OBBB and Opportunity Zones 2.0; Governing: A Strategic Playbook for Opportunity Zones 2.0; IRS: Opportunity Zones; Treasury: Qualified Opportunity Zones; 26 U.S.C. § 1400Z-2. Not tax advice. Consult a qualified CPA or tax attorney before making any investment decision.