If you invested in an Opportunity Zone fund before 2027, your deferred Opportunity Zone gain comes due on December 31, 2026. There is no extension and no way to roll it forward. The good news is that the bill is often smaller than people fear, and November is still early enough to do something about it. Here is what happens on December 31 and six things worth doing before then.
What happens to a deferred Opportunity Zone gain on December 31
The original program let you put off tax on a gain, but Congress gave the deferral a fixed end date. On December 31, 2026, every gain deferred under the original rules counts as income, no matter what year you invested. It goes on your 2026 return, so for most people the tax is due in April 2027.
“If you defer a gain into a QOF before 2027, that deferred gain is coming into income on December 31st, 2026. You will pay your taxes. You cannot roll it into a new fund.”
Ashley Tison
For the full rules, see what is due on December 31, 2026.
Six things to do before December 31
1. Confirm the real number
You do not automatically owe tax on the full deferred Opportunity Zone gain. The taxable amount is the smaller of the gain you deferred or the fair market value of your fund interest on December 31, minus your basis. Ask your fund manager for the year-end value and your capital account now, while there is time to check them.
2. Count only the step-ups you earned
A 10% basis step-up applies only if you invested by December 31, 2021. The extra 5% applies only if you invested by December 31, 2019. If you came in later, Ashley’s advice is short: “Don’t look for a step up that’s not there.”
| You invested | Basis step-up | Share of the deferred gain that is taxed |
|---|---|---|
| By December 31, 2019 | 15% | 85% |
| By December 31, 2021 | 10% | 90% |
| In 2022 or later | None | 100% |
3. Decide on a valuation before you pay for one
If your fund interest is worth less than you deferred, the lower value can set the bill. A project still under construction or an interest that is hard to sell may qualify. A discount is not a given, though. The rules add back your share of the fund’s debt and any losses you already took, so it often shrinks. As Ashley puts it, sometimes the juice ain’t worth the squeeze. The new Form 8997 asks for this value, so expect to support it. See valuation discounts and the December 31 tax.
4. Line up offsets while they still count
Your deferred Opportunity Zone gain keeps its character as a capital gain, so capital losses you take in 2026 and losses carried forward from earlier years net against it. If your fund owns a building placed in service this year, cost segregation and bonus depreciation can help too. Bonus depreciation is back at 100% for property acquired and placed in service after January 19, 2025. Most of these moves have to happen by December 31. See ways to offset your 2026 Opportunity Zone tax bill.
5. Plan the cash
The tax comes out of your pocket, not the fund’s. Ask your fund manager whether a distribution is planned, and ask your CPA whether you need an estimated payment for the fourth quarter, due January 15, 2027. Also check your state. Not every state follows the federal rules the same way.
6. Keep holding
The deferral ending and the ten-year benefit are separate. If you hold your fund interest ten years from the day you invested, the growth can still be free of federal capital gains tax. Paying tax on your deferred Opportunity Zone gain does not reset that clock.
New gains are a different story
The December 31 rules cover money already in the original program. A new gain from a new sale can still be deferred. If your 180-day window reaches into 2027, it can go in under OZ 2.0 with a five-year deferral and a 10% step-up, or 30% in a qualified rural fund. See can a 2026 gain use OZ 2.0, or run your numbers on our 2026 gains page.
Deferred Opportunity Zone gain FAQ
When is a deferred Opportunity Zone gain taxed?
Every gain deferred under the original program is recognized on December 31, 2026, unless an earlier event like a sale already triggered it. It goes on your 2026 federal return, due in April 2027.
Can I roll my deferred Opportunity Zone gain into a new fund?
No. Under the rules Notice 2026-40 says the IRS intends to propose, the gain recognized on December 31, 2026 cannot be deferred again in a new Opportunity Zone fund. Gains from new sales still can.
Do I lose the ten-year benefit when the deferral ends?
No. Paying tax on the deferred gain does not end your holding period. Hold your fund interest at least ten years from when you invested, and the growth on it can be free of federal capital gains tax when you sell.
Who pays the tax, me or the fund?
You do. The deferred Opportunity Zone gain is yours, so it lands on your own return. Some funds plan a distribution to help investors cover it, and many do not, so ask your fund manager now.
Sources
- 26 U.S. Code 1400Z-2, Special rules for capital gains invested in opportunity zones
- IRS Notice 2026-40
- IRS: About Form 8997
Not sure what your December 31 number looks like? Book a free 15-minute call and bring your latest fund statement.
General information, not tax or legal advice. Rules change, and your facts change the answer.