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Qualified Opportunity Zone (QOZ) — §1400Z-2

The complete practitioner guide to Qualified Opportunity Zone (QOZ) investing — covering capital gains deferral, basis step-up, and the 10-year exclusion for QOZ fund investments.

§1400Z-2QOZ Rules
Capital GainsDeferral Until 2026
10-Year HoldExclusion of QOZ Appreciation
~8,700 ZonesNationwide
IRC §1400Z-1, §1400Z-2 Capital gains deferral: Invest in QOF within 180 days Basis step-up: 10% after 5 years, 15% after 7 years 10-year exclusion: Appreciation in QOF excluded from income

QOZ Overview and Capital Gains Deferral

The Qualified Opportunity Zone (QOZ) program under §1400Z-2 allows taxpayers to defer capital gains by investing the gain in a Qualified Opportunity Fund (QOF) within 180 days of the sale. The deferred gain is recognized on the earlier of: (1) the date the QOF investment is sold or exchanged; or (2) December 31, 2026. The deferred gain is taxed at the capital gains rate in effect at the time of recognition.

The QOZ program was created by the Tax Cuts and Jobs Act (TCJA) in 2017 to encourage investment in economically distressed communities designated as Qualified Opportunity Zones by the Treasury Department. There are approximately 8,700 QOZs in the United States, covering portions of all 50 states, the District of Columbia, and five U.S. territories.

Basis Step-Up and the 10-Year Exclusion

In addition to capital gains deferral, the QOZ program provides two additional tax benefits: (1) a basis step-up on the QOF investment; and (2) a 10-year exclusion of appreciation in the QOF investment.

The basis step-up is: 10% of the deferred gain after holding the QOF investment for 5 years, and an additional 5% (15% total) after holding the QOF investment for 7 years. However, because the deferred gain must be recognized by December 31, 2026, the 7-year basis step-up is no longer available for new investments made after December 31, 2019.

The 10-year exclusion is the most powerful benefit of the QOZ program: if the QOF investment is held for at least 10 years, the taxpayer can elect to step up the basis of the QOF investment to its fair market value on the date of sale, excluding all appreciation in the QOF investment from income. This means that the appreciation in the QOF investment (above the original deferred gain) is completely excluded from income tax.

QOF Requirements

A Qualified Opportunity Fund (QOF) is an investment vehicle (corporation or partnership) that is organized for the purpose of investing in Qualified Opportunity Zone Property (QOZP). The QOF must hold at least 90% of its assets in QOZP, tested semi-annually. QOZP includes: (1) Qualified Opportunity Zone Business Property (QOZBP) — tangible property used in a trade or business in a QOZ; (2) Qualified Opportunity Zone Stock (QOZS) — stock in a QOZ business; and (3) Qualified Opportunity Zone Partnership Interests (QOZPI) — partnership interests in a QOZ business.

The QOZ business must satisfy the substantial improvement requirement: the QOF must substantially improve the property within 30 months of acquisition. Substantial improvement means that the QOF's additions to the basis of the property exceed the adjusted basis of the property at the beginning of the 30-month period.

QOZ Planning Considerations

The QOZ program is most beneficial for taxpayers with large capital gains (from the sale of a business, real estate, or securities) who can invest the gain in a QOF within 180 days. The 10-year exclusion is the most powerful benefit, but it requires a long holding period and a successful QOZ investment. Practitioners should advise clients to carefully evaluate the investment merits of the QOF before making a QOZ investment — the tax benefits do not justify a poor investment.

Practitioners should also be aware that the deferred gain must be recognized by December 31, 2026, regardless of whether the QOF investment has been sold. Clients who made QOZ investments in 2019 or later should be prepared to recognize the deferred gain on their 2026 tax return.

QOZ vs. §1031 Exchange

The QOZ program and the §1031 like-kind exchange are both capital gains deferral strategies, but they have different characteristics. The §1031 exchange allows taxpayers to defer capital gains on the sale of real property by reinvesting the proceeds in like-kind real property within 180 days. The QOZ program allows taxpayers to defer capital gains on the sale of any asset (not just real property) by investing the gain in a QOF within 180 days. The QOZ program also provides the 10-year exclusion of appreciation, which is not available under §1031.

Frequently Asked Questions

A QOZ is an economically distressed community designated by the Treasury Department. There are approximately 8,700 QOZs in the United States. Investors who invest capital gains in a Qualified Opportunity Fund (QOF) within 180 days of the sale can defer the capital gains tax.

If the QOF investment is held for at least 10 years, the taxpayer can elect to step up the basis of the QOF investment to its fair market value on the date of sale, excluding all appreciation in the QOF investment from income tax.

The deferred gain must be recognized on the earlier of: (1) the date the QOF investment is sold or exchanged; or (2) December 31, 2026. Clients who made QOZ investments in 2019 or later should be prepared to recognize the deferred gain on their 2026 tax return.

A QOF must hold at least 90% of its assets in Qualified Opportunity Zone Property (QOZP), tested semi-annually. QOZP includes Qualified Opportunity Zone Business Property (QOZBP), Qualified Opportunity Zone Stock (QOZS), and Qualified Opportunity Zone Partnership Interests (QOZPI).

The QOF must substantially improve the property within 30 months of acquisition. Substantial improvement means that the QOF's additions to the basis of the property exceed the adjusted basis of the property at the beginning of the 30-month period.

More Tax Planning FAQs

What is the IRS audit risk for this strategy?
The IRS audit rate for individual returns is approximately 0.4% overall, but increases significantly for returns with Schedule C income, large deductions, or specific strategies. Proper documentation is the best defense against an audit. Keep contemporaneous records, maintain written agreements, and ensure all deductions are supported by receipts and business purpose documentation.
How does this strategy interact with the alternative minimum tax (AMT)?
Many tax strategies that reduce regular income tax can trigger or increase AMT liability. Common AMT triggers include: ISO exercises, large state tax deductions, accelerated depreciation, and passive activity losses. Taxpayers should model both regular tax and AMT before implementing aggressive tax strategies to ensure the net benefit is positive.
What is the statute of limitations for IRS assessment of this strategy?
The IRS generally has three years from the later of the return due date or filing date to assess additional tax. If the taxpayer omits more than 25% of gross income, the statute is extended to six years. There is no statute of limitations for fraudulent returns or failure to file. Taxpayers should retain tax records for at least seven years to cover the extended statute of limitations.
How should this strategy be documented to withstand IRS scrutiny?
Documentation is the cornerstone of any tax strategy. Maintain contemporaneous records (created at the time of the transaction), written agreements, business purpose statements, and receipts. For strategies involving related parties, ensure all transactions are at arm’s length and documented with fair market value support. The burden of proof is on the taxpayer to substantiate deductions.
What is the economic substance doctrine and how does it apply?
The economic substance doctrine (§7701(o)) requires that transactions have both objective economic substance (a reasonable possibility of profit) and subjective business purpose (a non-tax reason for the transaction). Transactions that lack economic substance are disregarded for tax purposes, and the 40% strict liability penalty applies. Legitimate tax planning strategies must have genuine business purposes beyond tax reduction.
How does this strategy affect state income taxes?
Federal tax strategies do not always produce the same results at the state level. Some states do not conform to federal tax law changes (e.g., bonus depreciation, QSBS exclusion). Taxpayers should model the state tax impact of any federal tax strategy, especially in high-tax states like California, New York, and New Jersey. Some strategies may save federal taxes while increasing state taxes.
What is the step-transaction doctrine and how does it apply?
The step-transaction doctrine allows the IRS to collapse a series of related transactions into a single transaction if the intermediate steps have no independent significance. This doctrine is used to prevent taxpayers from using artificial multi-step transactions to achieve tax results that would not be available in a single transaction. Legitimate tax planning strategies should have independent business purposes for each step.
How does this strategy interact with the passive activity loss rules?
Passive activity losses (§469) can only offset passive income. Active business income, wages, and portfolio income are not passive. Real estate rental income is generally passive unless the taxpayer qualifies as a Real Estate Professional. Passive losses that cannot be used currently are suspended and carried forward to offset future passive income or recognized when the passive activity is disposed of in a fully taxable transaction.

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