Opportunity Zone Deferred Gain Is Taxed December 31, 2026: Form 8997, Form 8949 and Tax Due April 15, 2027
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Quick Answer
As of November 5, 2026, every dollar of gain still deferred in a qualified opportunity fund is included in income in the tax year that contains December 31, 2026, whether or not the fund has paid out anything. Section 1400Z-2(b)(1)(B) fixes that date, and Treasury Regulation 1.1400Z2(b)-1(e)(3) sets the amount: the lesser of the remaining deferred gain and the fund investment’s fair market value on December 31, 2026, minus a basis that is zero plus only the statutory step-ups. The step-up is 15% of the deferred gain for an investment held at least 7 years, 10% at 5 years and nothing below that (IRS FAQ, last reviewed September 14, 2026). Counting anniversaries (our arithmetic), that means 15% if you invested on or before December 31, 2019, 10% if you invested in 2020 or 2021, and 0% if you invested in 2022 through 2026. On $1,000,000 of deferred gain that is $850,000, $900,000 or $1,000,000 added to your 2026 income. The tax is reported on the 2026 return due April 15, 2027, with Form 8997 and Form 8949; the last estimated-tax installment for 2026 is due January 15, 2027.
Key Takeaways
- The inclusion date is fixed by statute: the deferred gain is taxed in the year that includes December 31, 2026, or earlier if you sell or otherwise have an inclusion event. The IRS FAQ puts it this way: “An investor must include the remaining deferred gain on the earlier of an inclusion event or December 31, 2026.”
- The step-up depends on how long you held the fund interest: 10% of the deferred gain at 5 years, a further 5% at 7 years (15% in total). From the anniversaries, a January 2019 investment reached 7 years in January 2026 (Treasury’s own example) and 2022 to 2026 investments get none (our arithmetic).
- The gain included is capped by value: if the investment is worth less than the deferred gain on December 31, 2026, only its fair market value minus basis is included (Treas. Reg. 1.1400Z2(b)-1(e)(3)). A $1,000,000 deferral worth $700,000 with a 10% step-up includes $600,000 (our arithmetic).
- After inclusion your basis rises by the gain you recognize, and the 10-year election (basis equal to fair market value on sale) is untouched. An investment made in January 2019 reaches 10 years in January 2029 (our arithmetic).
- The forms are changing: the 2026 draft Form 8997, created May 29, 2026, adds a Section B for “Recognition of Remaining Deferred Gains Due to End of Deferral Period” and a new Part V for basis after the deferral ends. The 2025 Form 8949 instructions say the gain is reported with code “Y”.
- The cash problem is timing: a gain included on December 31 falls only in the fourth estimated installment (January 15, 2027). The prior-year safe harbor in section 6654(d)(1) is 100% of the 2025 tax, or 110% if 2025 adjusted gross income exceeded $150,000, so it can avoid the underpayment penalty, but not the tax itself.
CSV · 60 rows
Qualified opportunity fund deferred gain: the December 31, 2026 inclusion rules, basis step-ups, forms and payment dates, as of November 5, 2026
60 rows: statute and regulation text, IRS FAQ answers, Form 8997 and Form 8949 instructions, 2026 capital gain thresholds, net investment income tax and estimated-tax rules, and our worked examples with the arithmetic labelled.
This page is about one event: the day the original opportunity zone deferral ends. It is not about whether to invest in a fund. For the 2.0 rules that apply to money invested after December 31, 2026, the 180-day windows and the new zone map, see our opportunity zone 2.0 guide; for what the funds themselves disclose, see the Form D census of opportunity zone funds. Here the question is narrower: if you invested between 2018 and 2026, what lands on your 2026 return, how is it calculated, which forms carry it, and when does the money have to leave your account?
The rule in the statute and the regulation
Section 1400Z-2(b)(1) says the deferred gain “shall be included in income in the taxable year which includes the earlier of—” the sale or exchange of the investment, or December 31, 2026. Section 1400Z-2(a)(2)(B) also bars any new election “with respect to any sale or exchange after December 31, 2026”, which is why 2.0 is a separate regime. The amount is in section 1400Z-2(b)(2): the excess of the lesser of the gain deferred or the investment’s fair market value on that date, over the taxpayer’s basis. The statute starts that basis at zero: “the taxpayer’s basis in the investment shall be zero.”
Treasury Regulation 1.1400Z2(b)-1(e)(3) repeats the formula for December 31, 2026: the lesser of the remaining deferred gain and the fair market value of the qualifying investment held on that date, over the investor’s basis “taking into account only section 1400Z-2(b)(2)(B).” For partnerships and S corporations, paragraph (e)(4) adds a cap equal to the gain a fully taxable disposition at fair market value would produce. Paragraph (e)(5) limits the total gain ever included to the amount deferred less the 5-year and 7-year increases.
| Item | What the rule says | Where |
|---|---|---|
| Inclusion date | The taxable year that includes the earlier of a sale or exchange of the investment, or December 31, 2026 | 26 U.S.C. 1400Z-2(b)(1) |
| Starting basis | Zero | 26 U.S.C. 1400Z-2(b)(2)(B)(i) |
| 5-year step-up | Basis rises by 10% of the gain deferred if the investment is held at least 5 years | 26 U.S.C. 1400Z-2(b)(2)(B)(iii) |
| 7-year step-up | A further 5% of the gain deferred if held at least 7 years (15% in total) | 26 U.S.C. 1400Z-2(b)(2)(B)(iv) |
| Amount included on December 31, 2026 | Lesser of remaining deferred gain and fair market value that day, minus basis | Treas. Reg. 1.1400Z2(b)-1(e)(3) |
| After inclusion | Basis rises by the gain recognized | 26 U.S.C. 1400Z-2(b)(2)(B)(ii) |
| 10-year election | Held 10 years and elected: basis equals fair market value on the date of sale | 26 U.S.C. 1400Z-2(c) |
Source: 26 U.S.C. 1400Z-2 as published by the Legal Information Institute; Treasury Regulation 1.1400Z2(b)-1 as published in the eCFR (version of October 1, 2026).
Your step-up depends on the day you invested
The statute says “held for at least 5 years” and “at least 7 years” and the regulation measures the holding period from the date of the qualifying investment (1.1400Z2(b)-1(d)(1)). Treasury’s own example shows the clock: for a qualifying investment made “in January 2019”, the 5-year adjustment is made “as of January 2024” and the additional 5% “as of January 2026” (Treas. Reg. 1.1400Z2(b)-1(g)). Applying the same count to December 31, 2026:
| Date you invested in the fund | Years held on December 31, 2026 | Step-up on the deferred gain | Share of deferred gain included if value has not fallen |
|---|---|---|---|
| 2018 through December 31, 2019 | 7 years or more | 15% (10% plus 5%) | 85% |
| January 1, 2020 through December 31, 2021 | 5 years to under 7 years | 10% | 90% |
| January 1, 2022 through December 31, 2026 | Under 5 years | None | 100% |
Our arithmetic from the anniversaries; the investment date is the date you were issued the fund interest, not the date of the sale that produced the gain. An investment made on exactly December 31, 2019 reaches seven years on the inclusion date itself, so confirm that edge case with your preparer. Money invested after 2026 follows the 2.0 percentages; see our 2.0 guide.
Two points follow. First, a great deal of original-program money went in early: our Form D census counts 251 new fund launches in 2019 and far fewer after. Second, a gain deferred by a person who invested in 2022 or later gets no step-up at all, so the whole deferred amount is exposed to the 2026 tax.
Worked examples on $1,000,000 of deferred gain
All figures below are our arithmetic from the statute and regulation. We assume a taxpayer already in the top federal long-term capital gain bracket: the 20% rate starts above $545,500 of taxable income for a single filer and $613,700 for a married couple filing jointly in 2026 (Rev. Proc. 2025-32, section 4.03), and add the 3.8% net investment income tax (section 1411) on the assumption that the gain is net investment income. State tax, depreciation recapture and other character rules are left out.
| Case | Basis on December 31, 2026 | Gain included on the 2026 return | Tax at 23.8% (20% plus 3.8%) |
|---|---|---|---|
| Invested 2019, value at least $1,000,000 | $150,000 | $850,000 | $202,300 |
| Invested 2021, value at least $1,000,000 | $100,000 | $900,000 | $214,200 |
| Invested 2023, value at least $1,000,000 | $0 | $1,000,000 | $238,000 |
| Invested 2021, value $700,000 on December 31, 2026 | $100,000 | $600,000 ($700,000 minus $100,000) | $142,800 |
| Invested 2023, value $400,000 on December 31, 2026 | $0 | $400,000 | $95,200 |
The gap between a 2019 and a 2023 investment on the same deferred gain is $35,700 of federal tax (our arithmetic). The last two rows show the value cap in action: where the fund has lost value, you are taxed on the fair market value less basis, not on the original gain, but you then hold an investment worth less than the gain you were taxed on, with its basis raised by the amount recognized.
After the inclusion your basis in the 2019 investment is $1,000,000 (the $150,000 step-up plus the $850,000 recognized; our arithmetic). A later sale above that value produces new gain, unless you hold 10 years and make the election, in which case the regulation’s Example 5 assumes “an election under section 1400Z-2(c) is made” and the basis is increased to fair market value before the sale. For a January 2019 investment the tenth anniversary is January 2029 (our arithmetic).
The same calculation inside a fund partnership
Treasury’s Example 5 in the regulation applies the December 31, 2026 rule to a QOF partnership with debt. Partners A and B each deferred $200 and partner C deferred $600; the partnership’s loan was allocated $200, $200 and $600 to them. Because each held their interests for at least seven years, “each of A’s basis and B’s basis is increased by $30 to $230, and C’s basis is increased by $90 to $690.” The result: “Each of A and B is required to recognize $170 of gain, and C is required to recognize $510 of gain.” The step-up is 15% of the deferred gain ($30 of $200, $90 of $600), and the inclusion is the deferred gain minus that step-up. If your fund holds debt, ask the sponsor for the figures it expects you to use.
Which forms carry it
The investor reports the inclusion, not the fund. The forms the IRS publishes today:
| Form | What it does for this event | Source text |
|---|---|---|
| Form 8997 (2025 edition) | Annual statement: Part I opening holdings, Part III inclusion events, Part IV year-end holdings. Special gain codes G (5-year adjustment) and H (7-year adjustment) are used in Part III to report the basis adjustment when an investment is disposed of; filed with the timely filed return, including extensions | Instructions inside Form 8997 (2025), created December 23, 2025 |
| Form 8997 (2026 draft) | Created May 29, 2026. Part III is split: Section A for inclusion events before the end of the deferral period, and a new Section B, Recognition of Remaining Deferred Gains Due to End of Deferral Period, with the date the deferral ends, the remaining deferred gain, fair market value, adjustment code and amount, and short-term and long-term gain. A new Part V reports the basis in the QOF investment after the end of the deferral period | IRS draft Form 8997 (2026); a draft, not for filing |
| Form 8949 | The deferral was entered with code Z. Previously deferred gain recognized is entered with the QOF EIN in column (a), code Y in column (f) and the deferred gain as a positive number in column (g), in the short-term or long-term part according to the gain’s character | Instructions for Form 8949 (2025) |
| Schedule D and Form 1040 | The Form 8949 totals flow to Schedule D, so the gain is taxed at its original character | Instructions for Form 8949 (2025) |
Sources: IRS Form 8997 (2025) with instructions; IRS draft Form 8997 (2026); Instructions for Form 8949 (2025).
The Form 8949 instructions tell you that “you will need to complete a Form 8997 for each year you hold the investment and for the year you dispose of the investment.” They also state that “the gain you recognize will be the same character as the gain you deferred,” so a deferred long-term gain stays long term. As of November 5, 2026 we found no final 2026 instructions for Form 8997 on irs.gov, and the 2025 Form 8949 instructions have no separate paragraph for the December 31, 2026 event; both are worth re-checking in January 2027 before your preparer files. The Form 8997 also has a box to tick if you disposed of an investment and received no Form 1099-B.
When the money is due
The 2026 return is due “on or before the 15th day of April following the close of the calendar year” (section 6072(a)), which is April 15, 2027. The estimated-tax installments for individuals are April 15, June 15, September 15 and January 15 of the following year (section 6654(c)(2)). A gain included on December 31, 2026 can therefore be matched only by the fourth installment or by the payment with the return.
| Rule | What the Code says | What it means here (our arithmetic) |
|---|---|---|
| Required annual payment | The lesser of 90% of the 2026 tax or 100% of the 2025 tax (section 6654(d)(1)(B)) | Paying 100% of last year’s tax avoids the penalty even if 2026 tax is much higher |
| Higher-income rule | If 2025 adjusted gross income exceeds $150,000, 110% replaces 100% ($75,000 for married filing separately) | Required annual payment is capped at 110% of the 2025 tax |
| Withholding | Income tax withheld is deemed paid in equal parts on each due date unless you show the actual dates (section 6654(g)) | Extra withholding from wages or distributions late in 2026 can count against earlier installments |
| Annualized method | A lower installment is allowed where the annualized income installment is less than the regular one (section 6654(d)(2)) | Income recognized on December 31 appears only in the final period; ask your preparer about Schedule AI of Form 2210 |
Sources: 26 U.S.C. 6654 and 6072 as published by the Legal Information Institute; Instructions for Form 2210 (2025), which show the same 90%, 100% and 110% tests for 2025.
A numeric case (our arithmetic): a taxpayer whose 2025 tax was $300,000 on adjusted gross income above $150,000 has a prior-year safe harbor of 110% of $300,000, or $330,000. If 2026 tax is $538,000 (the $300,000 plus $238,000 on a $1,000,000 inclusion), 90% of 2026 tax is $484,200. The required annual payment is the lesser, $330,000, so four payments of $82,500 avoid the underpayment penalty, and the remaining $208,000 is the balance paid with the return. The penalty is a separate question from the tax: the tax is owed either way. The 3.8% tax uses statutory thresholds of $250,000 of modified adjusted gross income for joint filers and $200,000 for other filers (section 1411(b)); our net investment income tax guide and our estimated tax guide for K-1 income cover the mechanics.
What a reader can do with this
This is a list of questions the public record lets you answer yourself, not tax advice.
- Write down the date of each fund investment (the date on the fund’s subscription confirmation), not the date of the sale, and match it to the table above. Funds with several closings can give you a different step-up for each tranche.
- Ask the sponsor in writing for your remaining deferred gain, the fair market value it will use on December 31, 2026, your share of fund debt and whether it will provide a statement for Form 8997. The amount included depends on that value.
- Run the numbers before the year ends. Compare the inclusion with your 2025 tax and your expected 2026 income; if the prior-year safe harbor works, the January 15, 2027 payment is the date to plan around.
- Check whether an earlier inclusion event happened (a gift, a distribution above basis, a transfer to a non-grantor trust): the IRS FAQ lists these as events that end the deferral earlier.
- Re-check the forms in January 2027 for the final 2026 Form 8997 and its instructions.
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What can still change
Nothing in the statute, the regulation or the IRS FAQ we read (last reviewed September 14, 2026) points to a change of the December 31, 2026 date, and the regulation’s examples and the draft Form 8997 are built on it. The proposed rules on annual fund reporting are a separate matter, described in our REG-116506-25 explainer.
FAQ
This is analysis of public documents, not investment, legal or tax advice.
Sources: 26 U.S.C. 1400Z-2, 1411, 6072 and 6654 (Legal Information Institute); Treasury Regulation 1.1400Z2(b)-1 (eCFR, version of October 1, 2026); IRS Opportunity Zones Frequently Asked Questions (page last reviewed September 14, 2026); IRS Form 8997 (2025) and draft Form 8997 (2026); Instructions for Form 8949 (2025); Instructions for Form 2210 (2025); IRS Revenue Procedure 2025-32. Worked examples and anniversary counts are our arithmetic.
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