Qualified Opportunity Zone Investment: Deferring and Reducing Capital Gains Through QOZ Funds

By Yarik Yarosh, CPA ·September 5, 2026 ·Updated September 23, 2026 ·6 min read

Written by Yarik Yarosh, CPA (US & Canada) September 5, 2026 · FL CPA license AC61704 · CPA Ontario

The Qualified Opportunity Zone (QOZ) program, created by TCJA in 2017, offers business owners and investors a powerful way to defer and potentially reduce capital gains taxes. When a taxpayer sells an asset at a gain and reinvests that gain into a Qualified Opportunity Zone Fund (QOZF) within 180 days, the original gain is deferred until December 31, 2026 (or when the investment is sold, whichever is earlier); for amounts invested after December 31, 2026, the deferral runs to the earlier of the sale or 5 years after the investment. If the QOZF investment is held for at least 10 years, all appreciation on the QOZF investment is permanently excluded from income.

✓Key takeaway

Qualified Opportunity Zone investment rules:

Only capital gains qualify. The gain invested in the QOZF must be a capital gain (short-term or long-term). Ordinary income and SE income don’t qualify.
180-day investment window. The gain must be invested in a QOZF within 180 days of the sale that generated the gain. For partnership and S-Corp gains, the 180-day clock starts either from the entity’s sale date or from the last day of the entity’s tax year (the partner/shareholder can choose).
Deferral of original gain. The original gain is deferred until the earlier of: (a) December 31, 2026, or (b) the date the QOZF investment is sold. The deferred gain is recognized at that point, regardless of whether the QOZF investment has been sold. For amounts invested after December 31, 2026, date (a) becomes 5 years after the investment.
10-year hold for tax-free appreciation. If the QOZF investment is held for at least 10 years, all appreciation on the QOZF investment (above the deferred gain amount) is permanently excluded from income. There’s no limit on the exclusion amount.
Basis adjustments: The original QOZ provisions provide a 10% basis step-up at 5 years and an additional 5% at 7 years. Because the deferred gain under those rules is recognized by December 31, 2026, a new investment made now can’t reach either step-up, making the 10-year exclusion the primary benefit for current investments. For amounts invested after December 31, 2026, a 10% step-up at 5 years (30% for a qualified rural opportunity fund) applies.
What is a QOZF? A corporation or partnership that holds at least 90% of its assets in Qualified Opportunity Zone property. QOZ property includes real estate, business assets, and businesses located in designated census tracts.

How does the 10-year exclusion work?

Hypothetical example

Round numbers. A business owner sells a rental property for a $500,000 capital gain. Within 180 days, the owner invests $500,000 into a QOZF that develops a commercial property in a designated opportunity zone.

Year of sale (2025):

Capital gain realized: $500,000
Invested in QOZF: $500,000
Gain recognized in 2025: $0 (deferred)

December 31, 2026 (deferral deadline):

Deferred gain recognized: $500,000
Tax on deferred gain (20% + 3.8% NIIT): $119,000
This tax is owed regardless of whether the QOZF investment has been sold

Year 10 (2035) and beyond:

QOZF investment has appreciated to $900,000
Appreciation: $400,000
If held 10+ years and sold:
Tax on appreciation: $0 (permanently excluded)
The $400,000 in appreciation is tax-free

Net result:

Original gain tax (deferred to 2026): $119,000
Tax on $400,000 appreciation: $0
Total tax: $119,000 on $900,000 in total value ($500,000 original + $400,000 appreciation)
Effective rate: 13.2%
Without QOZ: $500,000 gain tax + $400,000 gain tax = $119,000 + $95,200 = $214,200
QOZ savings: $95,200

The key remaining benefit is the 10-year exclusion on appreciation. The deferral benefit is limited for current investments (the deferred gain must be recognized by December 31, 2026, while amounts invested after that date get a rolling 5-year deferral), but the permanent exclusion on future appreciation remains a significant incentive for long-term QOZ investments.

Illustrative numbers only, not a real client and not advice for your facts.

Can I spread the gain from a business sale over multiple years?

If the buyer pays in installments, you can report the gain proportionally under IRC 453 as you receive each payment. The installment method applies automatically to any sale where at least one payment is received after the tax year of the sale. Each payment consists of three components: return of basis (tax-free), gain (taxed at capital gains rates), and interest income (taxed as ordinary income). Dealer dispositions, sales of inventory, and sales of depreciable property to a related party don’t qualify for installment treatment. If you elect out of the installment method (by reporting the full gain in the year of sale), you cannot reverse that election without IRS consent.

How are long-term and short-term capital gains taxed differently?

Short-term capital gains (assets held one year or less) are taxed at ordinary income rates, which can be as high as 37%. Long-term capital gains (assets held more than one year) are taxed at preferential rates: 0%, 15%, or 20% depending on your taxable income. The 3.8% net investment income tax (NIIT) applies on top of both rates for taxpayers with modified AGI above $200,000 ($250,000 married filing jointly). The holding period is critical for tax planning: selling an asset one day before the one-year mark costs you the rate differential, which can be 20+ percentage points. Installment sales under IRC 453 can spread the recognition of gain over multiple years.

Related guides:

Qualified Opportunity Zones for Business Owners: Deferring and Reducing Capital Gains

Does a QOZ deferral lower the rate on my gain?

No. Under the current rules, a qualified opportunity fund only delays the gain you invest, and that gain comes back into income on the earlier of selling the fund interest or December 31, 2026. If you still hold the fund interest then, that puts it on your 2026 return. If it was long-term gain, the 2026 bands apply: 0% up to $98,900 of taxable income for joint filers, 15% up to $613,700 and 20% above.

What the fund can shelter is its own growth. After a 10-year hold you can take a basis equal to fair market value when you sell, so that appreciation isn’t taxed. The 10% and 5% basis step-ups are still written into the current rules, but a new investment can’t reach five years before the 2026 inclusion date. Money invested after December 31, 2026 falls under a newer regime with a rolling five-year deferral instead.

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Cite this page

Yarik Yarosh, CPA. "Qualified Opportunity Zone Investment: Deferring and Reducing Capital Gains Through QOZ Funds." Blue Cloud CPA, September 5, 2026, updated September 23, 2026. https://bluecloudcpa.com/guides/small-business-qualified-opportunity-zone-investment

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.