The 2026 Year-End OZ Calendar: Which Gains Reach OZ 2.0

If you realized a capital gain in 2026 and you're weighing an Opportunity Zone investment, the most consequential decision in front of you isn't which fund. It's when you fund it.

Investments made through December 31, 2026 fall under the original Opportunity Zone rules. Investments made on or after January 1, 2027 fall under the rewritten program created by the One Big Beautiful Bill Act — what the industry has taken to calling OZ 2.0. The two regimes offer meaningfully different economics, and for a large share of 2026 sellers, both are still on the table.

The dividing line is your 180-day window. Here's how to figure out which side of it you're on, and what's realistically still achievable between now and year-end.

The date that decides it

To invest under OZ 2.0, two things have to be true at once: you fund the investment on or after January 1, 2027, and that date still falls inside your 180-day window.

Because the 180-day period counts the day of the gain as day one, the math works out to this: a gain realized on or after July 6, 2026 has a window that extends into 2027.

The July 6 case is a trap. January 1, 2027 is a federal holiday and falls on a Friday; markets and banks are closed. A window that closes on January 1 is a window that closes on December 31 in practice. Gains from roughly July 10 onward are the first ones with usable runway, since their windows reach Monday, January 4 or later.

If you sold anything in the back half of this year — which is to say, at any point since early July — you almost certainly have the choice. If you sold in the spring, you don't.

For the underlying mechanics of when the clock starts (and the situations where it starts later than you'd think), see our guide on How to Potentially Defer Capital Gains Tax With an Opportunity Zone Fund.

Why the timing matters more this year than usual

In a normal year, investing a few months earlier or later is a rounding error. This year it isn't, because the original program's deferral clock has already run out.

Under the original rules, deferred gain is recognized on the earlier of the date you dispose of the investment or December 31, 2026. That backstop date doesn't move. So a gain you realized in September and invested in a Qualified Opportunity Fund in October gets deferred for about eleven weeks, then comes due on your 2026 return anyway. The 5-year and 7-year basis step-ups that made early OZ investments attractive required holding periods that can no longer be completed. They're gone.

What a 2026 investment still gets you is the 10-year exclusion on any future appreciation. That's the whole benefit. It's a real one — but it's one benefit, not three.

An investment funded in January 2027 gets that same 10-year exclusion, plus a fresh five-year deferral running from the date you invest, plus a 10% basis step-up at the end of that five years. For funds holding at least 90% of their assets in qualified rural areas, the step-up is 30%.

Same dollars. Same 180-day window. Different regime, because of the funding date.

What Notice 2026-40 does — and doesn't — let you do

The IRS released Notice 2026-40 on June 18, 2026, signaling its intent to issue proposed regulations on the transition. Two points from it matter for year-end planning.

You can't re-defer the December 31 inclusion. If you're an existing OZ investor with gain deferred from an earlier investment, that gain is recognized on December 31, 2026, and the Notice is explicit that it cannot be rolled into a new QOF investment to postpone it again. Some investors have been hoping otherwise. The answer is no.

But that recognition event creates its own opportunity. The gain you recognize is a new eligible gain, and inclusion-event gains remain eligible for reinvestment under the new regime. The 180-day clock on a December 31, 2026 recognition runs to approximately June 28, 2027 — comfortably inside OZ 2.0.

The Notice also addresses funds holding property in zones that won't carry into the new designation round, including a working capital safe harbor exception for plans adopted on or before December 31, 2026. If you're evaluating a sponsor with projects already underway, that's a fair question to ask them directly.

If your gain came through a partnership or S corp

K-1 gains have more flexibility than most investors realize, and the flexibility runs in the helpful direction here.

A partner can generally elect to start the 180-day period on the date the partnership realized the gain, on the last day of the partnership's tax year, or on the due date of the partnership return without extensions. For a 2026 calendar-year partnership, the second option starts the clock on December 31, 2026 — pushing the window to late June 2027. The third pushes it further still.

Practically: if your 2026 gain is flowing through an entity, you likely have room to reach OZ 2.0 even if the underlying sale happened early in the year. This is worth confirming with your tax advisor before you assume the spring-sale rule above applies to you.

The honest uncertainty

One thing to sit with: the 2027 zone map isn't final yet.

Governors began nominating tracts for the new designation period on July 1, 2026. California's public comment window closed at the end of August, with final nominations due to Treasury by September 28. Designations take effect January 1, 2027, and run through 2036. Eligibility rules tightened — the income threshold dropped from 80% to 70% of area median family income and the contiguous-tract provision was eliminated — so the national tract count shrinks by roughly a quarter.

Waiting for OZ 2.0 means committing to a decision before you can see exactly which tracts made the cut. That's a genuine tradeoff, not a footnote. It argues for asking any sponsor you're evaluating how their pipeline is positioned under both maps.

Your remaining calendar

• Now through late September — Confirm your gain date and, if it's a K-1 gain, which 180-day start election you'll use. This determines whether you have a choice at all.
• October–November — Diligence. If you're planning to fund in January, subscription documents, entity formation, and wire instructions should be settled well before the holidays. Sponsors close their books; banks slow down.
• Early December — Model the December 31 inclusion if you're an existing OZ investor, and make sure the cash to pay that tax is identified. This is the liquidity squeeze that catches people.
• January 5 onward — The earliest practical funding date for OZ 2.0 treatment.

The window that's open right now is wider than it will be at any point for the rest of the year. Most of the work is front-loaded.

Urban Catalyst is a real estate fund sponsor, not a tax advisor. This article is general information about program mechanics and deadlines, not tax or investment advice. Individual outcomes depend on facts we don't have — your basis, your entity structure, your state's conformity treatment, your holding intentions. Please work through the specifics with your own CPA or tax counsel before acting on any deadline described here.

Important Disclosurs

The contents of this communication: (i) do not constitute an offer of securities or a solicitation of an offer to buy securities, (ii) offers can be made only by the confidential Private Placement Memorandum (the “PPM”) which is available upon request, (iii) do not and cannot replace the PPM and is qualified in its entirety by the PPM, and (iv) may not be relied upon in making an investment decision related to any investment offering by an issuer, or any affiliate, or partner thereof ("Issuer").

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Real Estate Risk Disclosure:

- There is no guarantee that any strategy will be successful or achieve investment objectives including, among other things, profits, distributions, tax benefits, exit strategy, etc.;
- Potential for property value loss – All real estate investments have the potential to lose value during the life of the investments;
- Change of tax status – The income stream and depreciation schedule for any investment property may affect the property owner’s income bracket and/or tax status. An unfavorable tax ruling may cancel deferral of capital gains and result in immediate tax liabilities;
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Opportunity Zone Disclosures

- Investing in opportunity zones is speculative. Opportunity zones are newly formed entities with no operating history. There is no assurance of investment return, property appreciation, or profits. The ability to resell the fund’s underlying investment properties or businesses is not guaranteed. Investing in opportunity zone funds may involve a higher level of risk than investing in other established real estate offerings.
- Long-term investment. Opportunity zone funds have illiquid underlying investments that may not be easy to sell and the return of capital and realization of gains, if any, from an investment will generally occur only upon the partial or complete disposition or refinancing of such investments.
- Limited secondary market for redemption. Although secondary markets may provide a liquidity option in limited circumstances, the amount you will receive typically is discounted to current valuations.
- Difficult valuation assessment. The portfolio holdings in opportunity zone funds may be difficult to value because financial markets or exchanges do not usually quote or trade the holdings. As such, market prices for most of a fund’s holdings will not be readily available.
- Capital call default consequences. Meeting capital calls to provide managers with the pledged capital is a contractual obligation of each investor. Failure to meet this requirement in a timely manner could elicit significant adverse consequences, including, without limitation, the forfeiture of your interest in the fund.
- Opportunity zone funds may use leverage in connection with certain investments or participate in investments with highly leveraged capital structures. Leverage involves a high degree of financial risk and may increase the exposure of such investments to factors such as rising interest rates, downturns in the economy or deterioration in the condition of the assets underlying such investments.
- Unregistered investment. As with other unregistered investments, the regulatory protections of the Investment Company Act of 1940 are not available with unregistered securities.
- It is possible, due to tax, regulatory, or investment decisions, that a fund, or its investors, are unable realize any tax benefits. You should evaluate the merits of the underlying investment and not solely invest in an opportunity zone fund for any potential tax advantage.

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