How do capital gains realized before and after December 31, 2026 differ under the Opportunity Zone rules?

They fall under different rule sets. A gain timely reinvested before the amended rules take effect is generally subject to the original program's fixed inclusion date for the taxable year containing December 31, 2026. A qualifying investment made after December 31, 2026 is generally subject to a five-year deferral running from the investment date, and to a basis adjustment to fair market value on the earlier of a qualifying sale or exchange, or the date 30 years after the qualifying investment. Whether a particular gain is an eligible gain, and when its 180-day period begins and ends, depends on the taxpayer, the entity, the type of gain, and the elections involved, and should be reviewed with a tax advisor.

Opportunity Zones 2.0 vs. Current Rules: What Changes for Qualifying Investments After 2026

Q: When do the amended Opportunity Zone rules take effect?

The amended Opportunity Zone rules, informally called Opportunity Zones 2.0 (not a formal IRS designation), apply to qualifying investments made after December 31, 2026, and the new round of zone designations takes effect January 1, 2027 and runs through December 31, 2036. Existing qualifying investments made under the original rules continue under those rules; they do not convert to the amended rules.

Updated October 2026 • Educational resource from Urban Catalyst

Key Takeaways

Federal legislation enacted July 4, 2025 made the Opportunity Zone program a permanent part of the tax code and revised its rules for qualifying investments made after December 31, 2026, including a new round of zone designations effective January 1, 2027.
Under the original rules, remaining deferred gain from an existing qualifying investment is generally required to be included in income for the taxable year containing December 31, 2026. This applies to the deferred gain from those existing qualifying investments, not to capital gains generally.
For qualifying investments made after December 31, 2026, the deferral period generally runs five years from the date of the investment rather than to a single fixed date, and a potential 10% basis step-up may apply after a five-year holding period (30% for an investment in a qualified rural opportunity fund).
Under both rule sets, an investor may be eligible after a qualifying 10-year holding period to exclude post-investment appreciation from federal capital gains tax. The holding period is a condition for potential favorable treatment, not an assurance of any outcome, and the original deferred gain generally remains taxable.
For qualifying investments made after December 31, 2026, that potential exclusion is additionally subject to a basis adjustment to fair market value on the earlier of a qualifying sale or exchange, or the date 30 years after the qualifying investment.
None of this is automatic. Whether a particular gain is an eligible gain, and when its 180-day period begins and ends, depends on the taxpayer, the entity, the type of gain, and the elections involved, and should be reviewed with a qualified tax professional.

About this guide. This is a general educational overview written from Urban Catalyst’s perspective as an Opportunity Zone fund sponsor. It describes how the original and amended rule sets operate and differ; it does not recommend investing under either rule set, does not conclude that either is preferable, and does not assume that either is appropriate for any particular reader. Which rule set applies to a particular gain depends on when that gain is realized and reinvested, and on the requirements discussed below, rather than on an investor’s preference. The comparison is illustrative rather than exhaustive. Other factors would also bear on any decision and are outside the scope of this article, including offering terms, fees and expenses, conflicts of interest, leverage, liquidity, valuation practices, sponsor financial condition, risk factors, exit strategy, and tax considerations beyond those discussed here. This article does not describe, and is not connected to, any Urban Catalyst offering.

Urban Catalyst and its affiliates do not provide tax, legal, or financial advice. The information below is general and educational in nature. This article discusses federal income tax treatment. State and local tax treatment may differ materially. For example, California does not currently conform to the federal Opportunity Zone gain-deferral and exclusion provisions, so a California taxpayer may recognize gain for California purposes even where federal treatment is deferred or potentially excluded. Every investor’s situation is different. Please consult your own tax professional regarding the laws applicable to your residence and circumstances.

Two Rule Sets, Divided by a Date

The Opportunity Zone program was created by the Tax Cuts and Jobs Act of 2017 as a temporary incentive with fixed sunset dates. Federal legislation enacted on July 4, 2025 made the program a permanent part of the tax code and revised several of its core provisions for qualifying investments made after December 31, 2026.

For convenience, this article refers to the original program rules as “OZ 1.0” and the amended rules as “OZ 2.0.” These are informal shorthand used by practitioners, not formal IRS designations. The dividing line between them is a date rather than a choice: existing qualifying investments continue under the original rules, and qualifying investments made after December 31, 2026 fall under the amended rules.

The Original Rules in Brief

The original program designated 8,764 census tracts in 2018, determined using 2011–2015 American Community Survey data. Investors who timely reinvested eligible capital gains into a Qualified Opportunity Fund deploying capital into those tracts could elect to defer those gains, and may be eligible, after a qualifying 10-year holding period, to exclude post-investment appreciation on the fund investment from federal capital gains tax, subject to requirements applying to the investor, the investment, the fund, the eventual disposition, and the election.

Under the original rules, deferral runs to a fixed date: remaining deferred gain from an existing qualifying investment is generally required to be included in income for the taxable year containing December 31, 2026. That mandatory inclusion is covered in our December 31, 2026 Opportunity Zone Tax Deadline Guide and our IRS Notice 2026-40 and the Transition to Opportunity Zones 2.0.

Original rules: core provisions

Fixed inclusion date. Remaining deferred gain from an existing qualifying investment is generally included for the taxable year containing December 31, 2026, and the date does not vary with the date of the investment.
One-time zone designation. 8,764 tracts designated in 2018, most expiring December 31, 2028 (December 31, 2027 for Puerto Rico).
Basis step-up schedule. A 10% step-up after a five-year holding period, and an additional 5% after seven years, each measured against the fixed inclusion date.
Potential 10-year benefit. Potential exclusion of qualifying post-investment appreciation after a qualifying 10-year holding period, subject to the applicable requirements. The original deferred gain generally remains taxable.
180-day investment period. Eligible gains are generally reinvested within a 180-day period. Whether a particular gain is an eligible gain, and when its 180-day period begins and ends, depends on the taxpayer, the entity, the type of gain, and the elections involved.

The Amended Rules in Brief

Under the amended rules, the program becomes permanent, with zone designations redetermined on a ten-year cycle rather than once. A new round of designations takes effect January 1, 2027 and runs through December 31, 2036. Deferral is measured from the date of the qualifying investment rather than to a single national date, tract eligibility criteria are narrower, new provisions apply to rural zones, and funds and zone businesses become subject to expanded annual reporting.

Amended rules: core provisions

Five-year deferral from the investment date. For qualifying investments made after December 31, 2026, deferred gain is generally included in income in the taxable year containing the earlier of a sale or exchange of the investment, or the date five years after the investment was made.
Permanent program with decennial redetermination. Designations run for ten years from the January 1 following certification. A tract designated in one round is not necessarily designated in the next.
Narrower tract eligibility. A tract qualifies on a median family income at or below 70% of the applicable statewide or metropolitan-area median, which replaces the prior 80% test, or on a poverty rate of at least 20% with median family income not exceeding 125% of that median. Contiguous-tract nominations are no longer available.
Rural provisions. A 30% basis step-up after a five-year holding period for an investment in a qualified rural opportunity fund, and a reduced substantial improvement threshold for property located in a zone comprised entirely of a rural area. The step-up is a fund test; the reduced threshold is a zone test, and applies regardless of whether the fund is a qualified rural opportunity fund.
Expanded annual reporting. New annual reporting obligations for funds and zone businesses apply for taxable years beginning after July 4, 2025, with statutory penalties for non-compliance.

What Each Framework Provides, and What Conditions Apply

The two rule sets are set out below in parallel. Each provision is paired with the conditions and limitations that apply to it. Urban Catalyst does not offer a view on whether either framework, or an investment under either, is preferable or appropriate for any reader.

Under the original rules

Provision	Conditions and limitations that apply
Deferral of eligible gain	Remaining deferred gain from an existing qualifying investment is generally required to be included in income for the taxable year containing December 31, 2026. The inclusion date is fixed and does not vary with the date of the investment. This applies to the deferred gain from existing qualifying investments, not to capital gains generally.
10% basis step-up after five years, and an additional 5% after seven years	Reaching the seven-year step-up before the December 31, 2026 inclusion date generally required a qualifying investment made by December 31, 2019; the five-year step-up generally required a qualifying investment made by December 31, 2021. Neither is reachable for an investment made now.
Potential exclusion of post-investment appreciation after a qualifying 10-year holding period	The holding period is a condition for potential favorable federal tax treatment, not an assurance of any outcome. The original deferred gain generally remains taxable. The exclusion applies only to qualifying post-investment appreciation, and only where the investor, the investment, the fund, the disposition, and the election satisfy the applicable requirements. Current regulations generally preserve the election for qualifying dispositions occurring before January 1, 2048.
Regulatory framework	Final regulations have been in place since 2019. IRS Notice 2026-40 provides current transitional guidance; Treasury and the IRS anticipate issuing proposed regulations containing similar rules, although the proposed and final regulations may clarify or modify particular details.
Zone designations	The 8,764 tracts designated in 2018 were determined using 2011–2015 American Community Survey data and have not been redetermined since. Most designations expire December 31, 2028 (December 31, 2027 for Puerto Rico).

For qualifying investments made after December 31, 2026

Provision	Conditions and limitations that apply
Five-year deferral running from the date of the qualifying investment	Applies to qualifying investments made after December 31, 2026. It does not change the inclusion date for investments made under the original rules. The deferred gain generally remains taxable at the end of the deferral period.
Permanent program with decennial redetermination of zones	Designations run for ten years from the January 1 following certification. A tract designated in this round is not necessarily designated in the next, and a tract’s status is fixed at designation rather than reassessed annually.
10% basis step-up after a five-year holding period, or 30% for an investment in a qualified rural opportunity fund	Subject to the holding-period and other statutory requirements. A step-up reduces the deferred gain recognized at the end of the deferral period; it does not eliminate it.
Potential exclusion of post-investment appreciation after a qualifying 10-year holding period	Subject to the same conditions noted above, and additionally subject to a basis adjustment to fair market value on the earlier of a qualifying sale or exchange, or the date 30 years after the qualifying investment. The original deferred gain generally remains taxable.
Reduced substantial improvement requirement for property in a rural zone	The substantial improvement test generally requires additions to basis during a 30-month period exceeding the property’s adjusted basis at the start of that period. For property in a zone comprised entirely of a rural area, that threshold is reduced to 50% of adjusted basis. The reduced threshold attaches to the property’s location and is not limited to qualified rural opportunity funds, and it took effect on enactment rather than in 2027.
Narrower tract eligibility criteria	A tract qualifies on a median family income at or below 70% of the applicable statewide or metropolitan-area median, or a poverty rate of at least 20% with median family income not exceeding 125% of that median. Contiguous-tract nominations, which the original program permitted for up to 5% of a state’s designations, are no longer available.
Expanded annual reporting by funds and zone businesses	Applies for taxable years beginning after July 4, 2025, which for a calendar-year fund means beginning with the 2026 tax year. Reporting covers census tract, industry code, asset values, the approximate number of residential units, and the approximate average monthly number of full-time equivalent employees, with statutory penalties for non-compliance.

Items not determined as of August 2026

Final zone designations. Revenue Procedure 2026-14, issued April 6, 2026, identified 25,332 eligible low-income community tracts using 2020–2024 American Community Survey data. Governor nominations are due September 28, 2026, extendable to October 28, 2026, with Treasury certification following. The IRS has stated that it expects to identify the designated zones before January 1, 2027. Final designations have not been published as of August 2026.
The number of tracts that will ultimately be designated. The statutory 25% cap applied to 25,332 eligible tracts implies a ceiling in the low 6,000s, and the Economic Innovation Group projects approximately 6,300 designations across the 50 states and the District of Columbia. These figures are not directly comparable to the 8,764 tracts designated in 2018, which included territories and contiguous tracts.
Proposed and final regulations under the amended provisions.

This summary is a simplified overview. Both rule sets involve significant additional requirements, costs, and risks not shown here, including, for fund investments, offering terms, fees and expenses, conflicts of interest, leverage, liquidity constraints, valuation practices, sponsor financial condition, tax considerations, and exit strategy. Both also depend on facts specific to each investor.

How the Two Rule Sets Differ in Practice

Deferral mechanics

Under the original rules, deferral runs to a fixed statutory date. Remaining deferred gain from an existing qualifying investment is generally included in income for the taxable year containing December 31, 2026, whether the investment was made in 2019 or in 2025. Again, this applies to the deferred gain from existing qualifying investments, not to capital gains generally.

For qualifying investments made after December 31, 2026, deferred gain is generally included in the taxable year containing the earlier of a sale or exchange of the investment, or the date five years after the investment was made. Each investment therefore has its own timeline. The deferred gain generally remains taxable at the end of that period under either rule set.

Basis step-up and the potential 10-year benefit

The original program provided a 10% basis step-up after five years and an additional 5% after seven years, each measured against the December 31, 2026 inclusion date. Reaching the seven-year benefit generally required a qualifying investment made by December 31, 2019, and the five-year benefit generally required one made by December 31, 2021.

Under the amended rules, a potential 10% step-up may apply after a five-year holding period, or 30% for an investment in a qualified rural opportunity fund. A step-up reduces the amount of deferred gain recognized; it does not eliminate it.

The potential 10-year benefit exists under both rule sets, with a difference worth noting. Under the original rules, current regulations generally preserve the election for qualifying dispositions occurring before January 1, 2048. For qualifying investments made after December 31, 2026, basis is adjusted to fair market value on the earlier of a qualifying sale or exchange, or the date 30 years after the qualifying investment. Under both, the holding period is a condition for potential favorable treatment rather than an assurance, and the original deferred gain generally remains taxable.

Zone selection and eligibility

The original round designated 8,764 tracts using 2011–2015 American Community Survey data. Governors could nominate up to 25% of eligible low-income community tracts in their state, including a limited share of contiguous tracts that did not themselves meet the income criteria.

The amended criteria are narrower. The median family income test moves from 80% to 70% of the applicable statewide or metropolitan-area median, the alternative path requires a poverty rate of at least 20% with median family income not exceeding 125% of that median, and contiguous-tract nominations are no longer available. Designations are redetermined every ten years using updated census data. As noted above, the eligible-tract dataset was published in April 2026 and the designations themselves have not been published as of August 2026.

Compliance and reporting

Under the original rules, reporting centered on IRS Form 8996 for fund-level certification and Form 8997 for investor-level reporting, with no public transparency requirements beyond standard tax filings.

The amended rules add annual reporting obligations for funds and zone businesses covering census tract, industry code, asset values, the approximate number of residential units, and the approximate average monthly number of full-time equivalent employees, with statutory penalties for non-compliance. These apply for taxable years beginning after July 4, 2025. The legislation also directs Treasury to publish annual reports, and to include comparative economic analyses in the reports submitted in the sixth and eleventh years after enactment.

Comparison Table

Feature	Original rules	Qualifying investments made after December 31, 2026
Deferral period	Remaining deferred gain generally included for the taxable year containing December 31, 2026	Generally the earlier of a sale or exchange, or five years from the investment date
Program duration	Temporary, with fixed sunset dates	Permanent, with zone designations redetermined every ten years
Basis step-up during the holding period	10% after five years and an additional 5% after seven years, each measured against the December 31, 2026 inclusion date; not reachable for an investment made now	Potential 10% after five years; 30% for an investment in a qualified rural opportunity fund
Tax on post-investment appreciation	Potential exclusion after a qualifying 10-year holding period, subject to the applicable requirements; current regulations generally preserve the election for qualifying dispositions before January 1, 2048	Potential exclusion after a qualifying 10-year holding period, subject to the applicable requirements and to a basis adjustment to fair market value on the earlier of a qualifying sale or exchange, or the date 30 years after the qualifying investment
Treatment of the original deferred gain	Generally remains taxable	Generally remains taxable
Zone designation	One round designated in 2018 on 2011–2015 data; most expire December 31, 2028	Redetermined every ten years; the round effective January 1, 2027 runs through December 31, 2036
Tract eligibility	80% median family income test, or 20% poverty rate; limited contiguous-tract nominations permitted	70% median family income test, or 20% poverty rate with median family income not exceeding 125%; no contiguous-tract nominations
Reporting	IRS Forms 8996 and 8997	Forms 8996 and 8997 plus expanded annual reporting for funds and zone businesses, for taxable years beginning after July 4, 2025
Rural provisions	No distinct rural provisions	30% five-year basis step-up for qualified rural opportunity funds; reduced substantial improvement threshold for property in a zone comprised entirely of a rural area, effective on enactment

This table is a simplified summary and does not capture every requirement, cost, or risk that applies under either rule set.

The December 31, 2026 Transition

Two rule sets are in play around the end of 2026, and they are distinct. For investors holding existing qualifying investments made under the original program, remaining deferred gain is generally required to be included in income for the taxable year containing December 31, 2026. The potential 10-year benefit for qualifying post-investment appreciation remains subject to its own requirements and is not altered by that inclusion.

Qualifying investments made after December 31, 2026 fall under the amended rules described above. How a particular gain and reinvestment timeline interact with the two rule sets, including whether a gain is an eligible gain and when its 180-day period begins and ends, depends on the taxpayer, the entity, the type of gain, and the elections involved, and is a question for the investor’s own tax advisor.

About Urban Catalyst

Urban Catalyst is a private equity real estate firm and developer focused on Opportunity Zone investment in downtown San Jose. As of August 2026, Urban Catalyst has launched two Opportunity Zone funds and has advanced a portfolio of seven downtown San Jose projects, serving as both fund manager and developer, a structure that involves operational involvement in its projects as well as related-party fees, potential conflicts of interest, concentration of execution responsibilities in one organization, and concentration in a single market. A single-market strategy carries concentration risks that include the local economy, regulatory changes, employer concentration, natural disasters, financing conditions, construction costs, and local supply and demand. This article does not describe, and is not connected to, any Urban Catalyst offering.

Continuing Coverage of the Opportunity Zone Program

Educational resources on the Opportunity Zone program, the 2026 recognition event, and Opportunity Zones 2.0.

Explore Opportunity Zones 2.0

Frequently Asked Questions

When do the amended Opportunity Zone rules take effect?

The amended rules apply to qualifying investments made after December 31, 2026, and the new round of zone designations takes effect January 1, 2027 and runs through December 31, 2036. Existing qualifying investments made under the original rules continue under those rules; they do not convert to the amended rules.

What happens to an existing Opportunity Zone investment after December 31, 2026?

Remaining deferred gain from an existing qualifying investment is generally required to be included in income for the taxable year containing December 31, 2026. The potential exclusion of qualifying post-investment appreciation after a qualifying 10-year holding period remains subject to its own requirements, and current regulations generally preserve the election for qualifying dispositions occurring before January 1, 2048. The original deferred gain generally remains taxable.

How do gains realized before and after December 31, 2026 differ?

They fall under different rule sets. A gain timely reinvested before the amended rules take effect is generally subject to the original program’s fixed inclusion date; a qualifying investment made after December 31, 2026 is generally subject to a five-year deferral running from the investment date. Whether a particular gain is an eligible gain, and when its 180-day period begins and ends, depends on the taxpayer, the entity, the type of gain, and the elections involved, and should be reviewed with a tax advisor.

How are the new Opportunity Zone designations being determined?

Revenue Procedure 2026-14, issued April 6, 2026, identified 25,332 eligible low-income community tracts using 2020–2024 American Community Survey data. Governors nominate tracts from that pool, with nominations due September 28, 2026, extendable to October 28, 2026, followed by Treasury certification. The IRS has stated that it expects to identify the designated zones before January 1, 2027. Final designations have not been published as of August 2026.

How many census tracts will be designated under the amended rules?

That is not determined as of August 2026. The statutory cap allows nomination of up to 25% of a state’s eligible low-income community tracts, which applied to the 25,332 eligible tracts implies a ceiling in the low 6,000s, and the Economic Innovation Group projects approximately 6,300 designations across the 50 states and the District of Columbia. These figures are not directly comparable to the 8,764 tracts designated in 2018, a count that included territories and contiguous tracts.

What is a qualified rural opportunity fund?

A qualified rural opportunity fund is a category introduced by the amended rules for funds investing in Opportunity Zones comprised entirely of rural areas. For this purpose, a rural area generally means an area other than a city or town with a population greater than 50,000 and any urbanized area contiguous and adjacent to such a city or town. An investment in a qualified rural opportunity fund may be eligible for a 30% basis step-up after a five-year holding period rather than 10%, subject to the applicable requirements. Separately, property located in a zone comprised entirely of a rural area is subject to a reduced substantial improvement threshold, 50% of the property’s adjusted basis rather than an amount exceeding that basis, and that provision is tied to the property’s location rather than to the fund category.

The Bottom Line

The original and amended rules are two frameworks separated by a date rather than two options an investor selects between. The original rules carry a fixed inclusion date, a completed round of zone designations, and step-up provisions that are no longer reachable for a new investment. The amended rules carry a deferral period measured from the investment date, a permanent program with zone designations redetermined every ten years, narrower tract eligibility criteria, new rural provisions, expanded reporting, and a 30-year limit on the basis adjustment underlying the potential appreciation exclusion. Several elements of the new round, including the designations themselves, are not determined as of August 2026.

This article does not reach a conclusion for any reader. Which rule set applies to a particular gain, and what any of it means for an individual situation, depends on facts specific to that investor and is worth putting to a qualified tax professional early.

Disclosures: Urban Catalyst and its affiliates do not provide tax, legal, or investment advice. This material is for informational and educational purposes only, is general in nature, and does not consider the specific circumstances of any individual investor. It is neither an offer to sell nor a solicitation of an offer to buy any security, and no offering is being made or identified by this article; any future offering, if made, would be made only through definitive offering documents describing its terms, fees, and risk factors. Nothing in this article should be construed as a recommendation to pursue, defer, or refrain from any investment or tax strategy, or as an indication that an Opportunity Zone investment under either rule set is appropriate for any particular reader. “OZ 1.0” and “OZ 2.0” are informal shorthand used by practitioners, not formal IRS designations. This article discusses federal income tax treatment; state and local tax treatment may differ materially, and California does not currently conform to the federal Opportunity Zone gain-deferral and exclusion provisions. Potential tax benefits are subject to limitations, eligibility requirements, holding periods, elections, and applicable tax regulations, which are subject to change; eligibility for deferral depends on the type of gain, the applicable reinvestment period, the elections made, and other statutory requirements, and is not automatic. The 10-year holding period is a condition for potential favorable federal tax treatment, not an assurance of any outcome, and there is no guarantee of any particular tax result; the original deferred gain generally remains taxable. Statements regarding zone designations, forthcoming regulations, and other pending determinations reflect information available as of August 2026 and are subject to change. Investments in real estate and in Opportunity Zone funds are speculative, illiquid, involve significant risk, and may result in partial or total loss of investment. Nothing herein describes the terms, status, or distribution policy of any particular fund or offering. Third-party data referenced herein is believed to be reliable, but its accuracy and completeness cannot be guaranteed. Past performance is no guarantee of future results. Prospective and current investors should consult their own tax, legal, and financial professionals regarding their particular circumstances.