Friends, I have been doing this since 1986. Reagan’s Tax Reform Act. Clinton’s rate hikes. The Bush cuts. The ACA surtax. The TCJA. And now the One Big Beautiful Bill Act (OBBBA). Forty years of legislative whiplash, and I can tell you with absolute certainty: what is happening right now in the Opportunity Zone world is one of the most time-sensitive, opportunity-rich moments I have seen in a generation.

The IRS just dropped Notice 2026-40 on June 18, 2026, fresh off the press, providing critical transitional guidance for existing QOF investors, fund managers, and operating businesses as we cross the bridge from OZ 1.0 to OZ 2.0 . And as of July 1, 2026, governors across all 50 states just opened their 90-day nomination window to redraw the new Opportunity Zone maps. This is the once-in-a-decade reset you need to understand before December 31, 2026 becomes a tax surprise and to position you for 2027 opportunities (no pun intended).

Let me break it all down, with the precision of a CPA and the enthusiasm of someone who genuinely loves this stuff.

First, A Quick Refresher: OZ 1.0 vs. OZ 2.0

Here is the deal. The original Opportunity Zone program, born out of the Tax Cuts and Jobs Act of 2017, allowed investors to defer capital gains by investing in Qualified Opportunity Funds (QOFs), with the deferred gain due no later than December 31, 2026 . It was a phenomenal tool: defer the gain, potentially exclude 10–15% via basis step-ups if held long enough, and exclude ALL appreciation after a 10-year hold.

Then came the OBBBA, signed July 4, 2025. BOOM. The program became permanent . But it wasn’t a simple extension. It was a redesign. OZ 2.0 creates a brand new program framework for investments made on or after January 1, 2027 , while the original OZ 1.0 rules govern investments made on or before December 31, 2026 . Same name, different beast. And the transitional period between the two? That is where the action, and the danger, lies.

Feature

OZ 1.0 (Investments ≤ Dec. 31, 2026)

OZ 2.0 (Investments ≥ Jan. 1, 2027)

Program Duration

Expires Dec. 31, 2026 (for new investments)

Permanent with 10-year designation cycles

Gain Deferral

Fixed date: Dec. 31, 2026

Rolling 5-year from investment date

Basis Step-Up

10% at 5 yrs, 15% at 7 yrs (expired)

10% at 5 yrs; 30% for rural QROFs

Gain Exclusion

100% after 10-year hold

100% after 10-year hold; capped at 30 years

Zone Sunset

Dec. 31, 2028

10-year cycles; next: Jan. 1, 2027–Dec. 31, 2036

IRS Notice 2026-40: The 10 Things That Matter Most

This Notice is the IRS’s transitional playbook for the OZ 1.0 → OZ 2.0 handoff. Think of it as the rulebook for the two-minute drill before the clock expires. Here is what you need to know:

1. The December 31, 2026 Gain Recognition Is NON-NEGOTIABLE — No Rollover

Let me be blunt: you cannot roll the deferred gain from OZ 1.0 into OZ 2.0. Full stop. If you invested capital gains into a QOF before December 31, 2026, that deferred gain (called the “deemed included gain” by the IRS) must be recognized on December 31, 2026. The original deferral election remains in effect, and that gain is simply not eligible for a new deferral election. This is the one that will catch people off guard.

What this means for you: If you are sitting on large deferred OZ 1.0 gains, start planning NOW for the tax liability coming with your 2026 return. Loss harvesting, charitable strategies, installment sales, passive loss utilization, valuation discount planning. All of these deserve serious attention before year-end.

1. BUT — Inclusion Event Gains CAN Be Reinvested (Carefully)

Here is a nuance the Notice preserved that deserves your attention. Gain recognized because of an inclusion event (gains triggered before December 31, 2026) may itself qualify as eligible gain for a new OZ investment. Examples of inclusion events include certain gifts (even to a spouse), certain partnership distributions, transfers reducing a qualifying investment, QOF decertification, and distributions in excess of tax basis.

Planning opportunity: If you can trigger an inclusion event before December 31, 2026 (deliberately and carefully), you get a fresh 180-day window to reinvest into a new QOF. Caution: the IRS explicitly noted the potential application of anti-abuse provisions. Think of it like a chess move. Brilliant in theory, requiring flawless execution. Don’t do this without counsel who knows the regulations cold.

1. Existing Investors Keep the 10-Year Tax-Free Treatment

Deep breath, OZ 1.0 investors. Recognizing your deferred gain on December 31, 2026 does not eliminate your eligibility for the 10-year exclusion of appreciation. You still hold a qualifying OZ investment. You still retain the right to elect a step-up in basis to fair market value upon a later sale of the QOF interest — assuming you satisfy the 10-year holding period.

This is perhaps the most taxpayer-friendly piece of the Notice. The whole reason you went into an OZ deal was the tax-free appreciation. The IRS confirmed: that golden goose is still laying eggs.

1. Pre-2027 Capital Gains CAN Be Deferred Under OZ 2.0

One of the most important clarifications in Notice 2026-40 is this: gains realized before 2027 may still qualify for OZ 2.0 deferral if invested into a QOF after January 1, 2027, within the applicable 180-day investment period. This is what some practitioners are calling the “Hop Effect”.

Potentially qualifying gains include:

• Late-2026 asset sales (post-July 9, 2026, where the 180-day window extends into 2027)
• K-1-reported gains from partnerships or S corporations (where owners can choose a 180-day period extending into 2027)
• Certain installment sale gains recognized in 2027
• IRC §1231 gross gains (1231 losses need not be netted)
• IRC §1256 gains calculated as of December 31

The implication is significant: If you sell a business, a piece of real estate, or a portfolio asset in the second half of 2026, you may be able to straddle both programs, capturing OZ 2.0’s rolling 5-year deferral and 10% basis step-up even though the gain arose before January 1, 2027.

1. CRITICAL WARNING: Post-2026 Money Cannot Freely Enter OZ 1.0 Projects

This is the one that blindsided a lot of practitioners. The widespread assumption — that new capital gains could freely enter OZ 1.0 deals through December 31, 2028 is wrong .

Under the OBBBA’s amended definition of Qualified Opportunity Zone Business Property (QOZBP), tangible property acquired after December 31, 2026, generally cannot qualify as QOZBP if it is located in a previously designated OZ 1.0 zone, unless a very specific exception applies. This matters enormously for fund sponsors and developers who planned to raise new capital in 2027 or later for existing OZ 1.0 projects.

The exception, and it is narrow: Property acquired after December 31, 2026 can still qualify IF, by December 31, 2026, all of the following are true:

• A formal, written Working Capital Safe Harbor (WCSH) plan was adopted by December 31, 2026
• The QOZB received at least 10% of total planned working capital by December 31, 2026
• At least 5% of total planned working capital was actually expended (or contractually committed under binding contracts) by December 31, 2026
• Post-2026 property acquisitions are substantially consistent with the written plan

Think of it like a construction lien. If you don’t properly file and perfect before the deadline, you lose priority. Same principle here. The December 31, 2026 deadline is absolute.

What this means for OZ fund managers and sponsors: If you plan to raise capital after January 1, 2027, you need your QOF and QOZB formed NOW, your WCSH plan documented NOW, and 10% of project capital funded into the QOZB before the ball drops on New Year’s Eve.

1. Replacement and Modernization Property Continues to Qualify — With Limits

The IRS provided welcome relief here. Existing OZ businesses may continue normal replacement and modernization activities after 2026 without jeopardizing their QOZ status. Replacement windows, appliances, flooring, equipment modernization, technology upgrades, restaurant equipment. All of these pass muster.

The bright line: This relief does not extend to business expansions, new facilities, new product lines, or new business ventures. If you are adding a new building to your OZ real estate portfolio after 2026, that new structure likely cannot qualify as QOZBP under the general rule. This is not a minor technicality. This can blow up the 70/30 QOZB testing that keeps your fund compliant.

1. QOFs and QOZBs Get Long-Term Safe Harbors Through 2047

Here is some genuinely good news. The Notice provides that QOFs and QOZBs may continue treating expired OZ 1.0 tracts as qualified zones through December 31, 2047 for purposes of key compliance tests:

• QOZ business property requirements
• 50% gross income tests
• Intangible property tests
• Other QOZB compliance requirements

This is massive for long-term investors. The original OZ 1.0 designations sunset December 31, 2028 (2027 for Puerto Rico). Without this safe harbor, projects with 10+ year hold periods would face compliance nightmares as zones technically expired beneath them. The IRS essentially said: you made a 10-year investment under a valid program, we are not pulling the rug out from under you. Grazie, IRS. (I do not say that often.)

1. New OZ 2.0 Investments: The Rolling 5-Year Deferral Explained

For gains invested on or after January 1, 2027, the mechanics work like this:

• Deferral Period: 5 years from the date of QOF investment (not a fixed calendar date)
• Gain Recognition: The earlier of (a) sale of the investment, (b) another inclusion event, or (c) the 5th anniversary of the QOF investment date
• Basis Step-Up: 10% after a 5-year hold for regular QOFs; 30% for Qualified Rural Opportunity Funds (QROFs)
• Appreciation Exclusion: 100% of post-investment appreciation excluded from gain if held 10+ years, capped at 30 years (after 30 years, basis automatically steps up to fair market value)

Example: Invest in a QOF in March 2028 → deferred gain recognized in March 2033 → sell QOF in 2040 → appreciation from 2028 to 2040 is completely tax-free .

New Reporting Requirements: Big Stick, Bigger Compliance Burden

Let me be direct: OZ 2.0 comes with serious new reporting teeth. Under the OBBBA, QOFs must now file annual reports with the IRS including:

• North American Industry Classification System (NAICS) code for the QOF’s business
• Population census tract(s) where QOZ business property is located
• Aggregate value of owned and leased tangible property
• Number of residential units held
• Average monthly full-time employees

Penalties for non-compliance: $10,000 per return, or $50,000 per return for QOFs with more than $10 million in assets, with harsher penalties for willful non-compliance. These are not suggestions. They are the IRS saying: we built this new program with accountability mechanisms and we mean it.

The New OZ 2.0 Map: Where Are We and When Does It Drop?

This is where the real estate developers, fund sponsors, and community economic development folks are watching the calendar like it is New Year’s Eve. Here is the full timeline:

Milestone

Date

OBBBA signed into law

July 4, 2025

Rev. Proc. 2026-14 issued (eligible tract list published)

April 6, 2026

IRS Notice 2026-40 transitional guidance issued

June 18, 2026

Governor nomination window OPENS

July 1, 2026

Nomination submission deadline

September 28, 2026

Optional 30-day extension deadline

October 28, 2026

Treasury reviews and certifies designations

Late 2026

New OZ 2.0 map takes effect

January 1, 2027

OZ 1.0 designations sunset

December 31, 2028

OZ 2.0 designations expire (next cycle begins)

December 31, 2036

On April 6, 2026, Treasury and the IRS released Revenue Procedure 2026-14 , identifying 25,332 eligible census tracts nationally, based on 2020-2024 American Community Survey data, from which governors may nominate up to 25% for OZ 2.0 designation. Of those, 8,334 tracts are entirely rural , qualifying for the enhanced QROF incentives.

As of June 25, 2026, Treasury and the IRS are still finalizing Opportunity Zone implementation procedures.  The CDFI Fund confirmed this in a June 22, 2026 update. The actual final list of designated OZ 2.0 tracts will not be published until Treasury reviews and certifies governor nominations after the September 28, 2026 window closes. The Treasury has stated it expects to publish the final designations prior to January 1, 2027 .

Bottom line on the map: We know which tracts are eligible. That list is published. We do NOT yet know which tracts will be designated. That depends on what each governor nominates between now and September 28, 2026. The final OZ 2.0 map is expected late fall 2026, before January 1, 2027.

What Changed From OZ 1.0 Maps?

Let’s be honest, the OZ 2.0 maps will look very different from OZ 1.0 maps. Here is why:

• Tighter income threshold: Eligible tracts must have median family income below 70% of area median (down from 80% in 2017)
• Anti-gentrification rule: Tracts with a 20%+ poverty rate are disqualified if median family income exceeds 125% of applicable state or metro median
• Contiguous tract rule eliminated: No more designating higher-income tracts simply because they border a low-income community
• Puerto Rico: No longer a blanket OZ designation; now limited to 25% of eligible tracts like all other jurisdictions
• Result: Approximately a 25% reduction in the number of designated zones from 8,764 to roughly 6,500

If you have an OZ 1.0 investment in a tract that does not re-qualify under the tightened criteria and that tract is not re-nominated by the governor, that project will not be in a designated OZ 2.0 zone. Your OZ 1.0 benefits continue through 2028 under existing rules, but new investments in that location after January 1, 2027 will not qualify for OZ 2.0 treatment.

Your OZ 2.0 Action Items Before December 31, 2026

This is not a drill. Here is what needs to happen and I mean now :

For existing OZ 1.0 investors:

• Model your 2026 tax liability from December 31, 2026 gain recognition now, not in October
• Do NOT assume you can roll the deferred gain into a new QOF. The IRS says no.
• Review your QOF’s value. If the fund has underperformed, a lower fair market value could reduce your taxable inclusion amount.
• Confirm your 10-year hold status. You still qualify for tax-free appreciation on the back end
• Explore loss harvesting in your broader portfolio to offset the 2026 gain recognition event

For QOF fund managers and OZ sponsors planning to raise post-2026 capital:

• Form the QOF and QOZB immediately. Entity formation must be complete before year-end
• Adopt a written Working Capital Safe Harbor plan before December 31, 2026
• Fund at least 10% of total planned working capital to the QOZB, actual cash flowing to the QOZB level by December 31, 2026
• Expend or contractually commit at least 5% of estimated working capital before year-end (binding contracts count)
• This is a hard deadline. There is no cure for missing these requirements

For investors planning new OZ 2.0 activity in 2027:

• Monitor your state’s OZ 2.0 nomination process. The tract you want may or may not make the new map
• Capital gains realized after July 9, 2026 may qualify for OZ 2.0 deferral under the 180-day rule. Plan your exit timing accordingly
• Explore rural QROFs. The 30% basis step-up and 50% substantial improvement threshold make rural projects dramatically more attractive than OZ 1.0
• Build OZ 2.0 compliance into your fund documents. The new reporting requirements have real financial teeth

The Bottom Line: OZ 2.0 Is a Once-in-a-Decade Opportunity — But the Window Is Narrow

I have lived through enough tax law cycles to know that the combination of a genuine wealth-preservation incentive and a legislative hard deadline is rare . Opportunity Zones 2.0 is that combination and it comes with an expiration date on the planning window that is measured in weeks, not years.

The IRS transitional guidance in Notice 2026-40 is enormously helpful for existing investors, particularly the confirmation that the 10-year appreciation exclusion survives the December 31, 2026 gain recognition event, and that pre-2027 gains can still access OZ 2.0 deferral. But the same notice draws a very bright line that many practitioners missed: post-2026 capital cannot freely enter OZ 1.0 projects without proper WCSH planning completed before year-end .

The new OZ 2.0 maps will reshape where private capital flows for the next decade. With roughly 25% fewer designated zones, competition for the tracts that remain will intensify and the projects in rural zones with QROF eligibility represent some of the most compelling tax-advantaged investment structures I have seen in my career. Combined with the permanence of the program and the rolling 5-year deferral mechanic, OZ 2.0 delivers the long-term investment horizon that OZ 1.0 always lacked.

Dio mio, the planning opportunities here are extraordinary. The risk of inaction is equally extraordinary.

Grazie Mille, Ciao!

The strategies discussed above involve complex tax rules under IRC §§ 1400Z-1 and 1400Z-2 and IRS Notice 2026-40. Every investor situation is different, and the WCSH, inclusion event, and OZ 2.0 deferral strategies described here require careful, fact-specific analysis before implementation. Don’t wing it.

Ready to map out your OZ strategy before December 31, 2026? Reach out to us at [email protected] .  We’d love to help you navigate the transition. Find out more about or proprietary approach to tax strategy development and planning in The Cordasco Compass at robcordasco.com and explore more advanced tax strategies in our full blog at cordascocpa.com/blog .