The Opportunity Zone library
Everything you need to know about Opportunity Zones.
90 guides on how the program works, what it saves, the rules funds and businesses must follow, how zones are chosen and how data centers fit. Each one answers a real question, shows the math and cites its sources.
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What is an Opportunity Zone?An Opportunity Zone is a low-income census tract where investing capital gains through a Qualified Opportunity Fund earns federal tax deferral and exclusion.7 min readHow Opportunity Zones work, step by stepSell an asset, invest the gain in a Qualified Opportunity Fund within 180 days, hold 5 years for a 10% step-up and 10 years for tax-free growth. Each step explained.7 min readOpportunity Zone tax benefits, explainedOpportunity Zone benefits: defer a capital gain for five years, cut it by 10% (30% rural), and pay no federal tax on fund growth after 10 years. Math included.7 min readData centers in Opportunity Zones: the complete guideData centers can qualify for Opportunity Zone benefits if they meet the fund and business tests. The key issues: triple-net leases, IT equipment and power timing.12 min readRural Opportunity Zones, explainedRural Opportunity Zones get a 30% basis step-up through a Qualified Rural Opportunity Fund and a 50% substantial improvement threshold instead of 100%.7 min readThe new Opportunity Zone maps taking effect in 2027New Opportunity Zones take effect January 1, 2027 and run through 2036. As of October 20, 2026, nominations are closing and Treasury is still certifying.6 min read
Opportunity Zone basics
What Opportunity Zones are, how the program works and who it is for.
- What is an Opportunity Zone?An Opportunity Zone is a low-income census tract where investing capital gains through a Qualified Opportunity Fund earns federal tax deferral and exclusion.
- How Opportunity Zones work, step by stepSell an asset, invest the gain in a Qualified Opportunity Fund within 180 days, hold 5 years for a 10% step-up and 10 years for tax-free growth. Each step explained.
- What is a Qualified Opportunity Fund (QOF)?A Qualified Opportunity Fund is a corporation or partnership that holds at least 90% of its assets in Opportunity Zone property and self-certifies on IRS Form 8996.
- What is a Qualified Opportunity Zone Business (QOZB)?A QOZB is an operating company owned by a QOF where at least 70% of tangible property is zone business property and 50% of gross income comes from the zone.
- Opportunity Zone tax benefits, explainedOpportunity Zone benefits: defer a capital gain for five years, cut it by 10% (30% rural), and pay no federal tax on fund growth after 10 years. Math included.
- Are Opportunity Zones permanent?Yes. Public Law 119-21 made Opportunity Zones a permanent part of the tax code, with zone maps redrawn every 10 years and a rolling five-year deferral per gain.
- Who can invest in an Opportunity Zone fund?Any taxpayer with an eligible capital gain can invest in a QOF: individuals, companies, trusts and estates. Most private funds also require accredited investors.
- Which capital gains qualify for Opportunity Zone deferral?Short- and long-term capital gains and gross §1231 gains qualify for OZ deferral; ordinary income, depreciation recapture and related-party gains do not.
- Opportunity Zone vs. 1031 exchange: which is better?A 1031 exchange defers real estate gain indefinitely if you reinvest all proceeds; an Opportunity Zone fund takes any capital gain and makes 10-year growth tax-free.
- Opportunity Zone glossary: every term definedPlain-English definitions of 66 Opportunity Zone terms, from QOF, QOZB and eligible gain to the 90% asset test, working capital safe harbor and Form 8996.
- Opportunity Zones: the 25 most common questions answeredAnswers to the 25 most common Opportunity Zone questions: eligible gains, the 180-day rule, five-year deferral, 10% or 30% step-ups and the 10-year rule.
- Opportunity Zone myths and misconceptionsSixteen common Opportunity Zone myths corrected: you invest only the gain, deferral lasts five years, the 10-year exclusion has limits and leases can disqualify.
Tax benefits & the math
Deferral, basis step-ups, the ten-year exclusion and how the numbers work out.
- The Opportunity Zone 180-day investment ruleYou have 180 days from the date a gain is recognized to invest it in a QOF. Start dates for sales, §1231 gains, K-1 gains and installment sales, with examples.
- How the five-year Opportunity Zone deferral worksA gain invested in a QOF after 2026 is deferred until the earlier of a sale or the fifth anniversary, then taxed at 90% (70% in a rural fund). Rules and math.
- The Opportunity Zone basis step-up: 10% and 30%Hold a QOF investment five years and basis rises by 10% of the deferred gain, or 30% in a Qualified Rural Opportunity Fund. Who qualifies, the math and limits.
- The 10-year hold: tax-free gains on Opportunity Zone investmentsHold a QOF investment 10 years and you can elect a fair market value basis on sale, so appreciation is federally tax-free, up to its value at year 30. How it works.
- The 30-year limit on Opportunity Zone gainsSell a QOF investment after its 30th anniversary and basis is fixed at the year-30 value, so only appreciation through year 30 is tax-free. Rules, math, open issues.
- Opportunity Zone tax savings: a worked exampleA $1 million gain run three ways: pay tax now, a standard QOF and a rural QOF. At 23.8% and a doubling over 10 years, the QOF leaves about $443,000 more after tax.
- Section 1231 gains and Opportunity ZonesGross §1231 gains from business property can be deferred in a QOF, with 180 days from each sale. Depreciation recapture taxed as ordinary income does not qualify.
- Investing partnership and K-1 gains in an Opportunity Zone fundA partnership can invest its gain in a QOF, or each partner can defer its K-1 share, starting 180 days from the sale, the year-end or the return due date.
- Opportunity Zone inclusion events: what triggers tax earlyAn inclusion event ends Opportunity Zone deferral early. Sales, gifts and distributions above basis trigger tax; death and grantor trust transfers do not.
- State tax treatment of Opportunity Zone investmentsOpportunity Zone benefits are federal. Most income-tax states follow them, but California, North Carolina and others decouple. See which states and why it matters.
- Depreciation, bonus depreciation and Opportunity ZonesQOF projects claim depreciation and 100% bonus depreciation like any business, and a 10-year hold can exclude the recapture. How it works, with a data center case.
- Opportunity Zone exit strategies after 10 yearsAfter 10 years, QOF investors can sell their interest or have the fund sell assets and elect to exclude the gain. Exit options, the 30-year cap and timing.
Fund & business rules
The tests a Qualified Opportunity Fund and its businesses must pass, and how to stay compliant.
- The QOF 90% asset testA QOF must hold at least 90% of its assets in Opportunity Zone property, averaged over two testing dates each year. How the test, valuation and monthly penalty work.
- The QOZB 70% tangible property testAt least 70% of the tangible property a QOZB owns or leases must be Opportunity Zone business property. What qualifies, how it is valued and how data centers pass.
- QOZB gross income, intangibles and financial property testsA QOZB needs 50% of gross income from active business in the zone, 40% of intangibles used there and under 5% financial property. The safe harbors, explained.
- The Opportunity Zone working capital safe harborA QOZB can hold cash for up to 31 months, or 62 months with multiple plans, under a written plan and schedule. The requirements, tolling and data center issues.
- The Opportunity Zone substantial improvement testExisting property qualifies if, within 30 months, improvements exceed its adjusted basis, land excluded; 50% in rural zones. Rules, aggregation and examples.
- The Opportunity Zone original use requirementProperty is original use if first placed in service in the zone by the QOF or QOZB. New builds, imported equipment and buildings vacant 3 years qualify.
- Businesses excluded from Opportunity Zones (the sin business list)Seven business types can never be a QOZB, from golf courses and country clubs to gambling venues and liquor stores. The full list and the 5% de minimis rules.
- Form 8996 and Form 8997, explainedForm 8996 is the fund's annual QOF certification and 90% asset test. Form 8997 is each investor's yearly statement of QOF investments and deferred gain.
- Opportunity Zone reporting requirements and penaltiesQOFs must file annual §6039K returns, with §6726 penalties of $500 a day up to $10,000 ($50,000 for funds over $10 million). What is law and what is proposed.
- How to set up a Qualified Opportunity FundTo set up a QOF, form a corporation or partnership to invest in zone property, self-certify on Form 8996 and hold 90% of assets in QOZ property when tested.
- Leased property rules for Opportunity Zone businessesLeased property counts as QOZ business property if the lease is at market rate and the property is used in the zone, with no original use or improvement test.
- Related-party rules in Opportunity Zone dealsIn Opportunity Zone deals, parties are related above 20% ownership. The test limits eligible gains, property purchases and leases, and family ownership counts.
Zone maps & designation
How zones are chosen, what qualifies, rural zones and how to check a property.
- How Opportunity Zones are designatedGovernors nominate up to 25% of eligible low-income census tracts and Treasury certifies them. New zones run from January 1, 2027 through December 31, 2036.
- The new Opportunity Zone maps taking effect in 2027New Opportunity Zones take effect January 1, 2027 and run through 2036. As of October 20, 2026, nominations are closing and Treasury is still certifying.
- Which census tracts qualify as Opportunity ZonesA tract qualifies if median family income is at most 70% of the area median, or poverty is at least 20% with income at most 125% of the area median.
- Rural Opportunity Zones, explainedRural Opportunity Zones get a 30% basis step-up through a Qualified Rural Opportunity Fund and a 50% substantial improvement threshold instead of 100%.
- What is a Qualified Rural Opportunity Fund (QROF)?A QROF is a QOF holding 90% of its assets in wholly rural Opportunity Zones. Investors get a 30% basis step-up after five years instead of 10%.
- How to check if a property is in an Opportunity ZoneFind the property's 11-digit census tract with the Census Geocoder, then match it to the official zone list. New zones take effect January 1, 2027.
- Census tracts and Opportunity ZonesEvery Opportunity Zone is a census tract. Tracts qualify at 70% of area median income, or 20% poverty with income under 125%; 25,332 are eligible for 2027.
- How governors choose Opportunity ZonesGovernors nominate up to 25% of eligible low-income tracts in a 90-day window that opened July 1, 2026; Treasury certifies them for 2027 through 2036.
- Opportunity Zone maps and data toolsThe official Opportunity Zone map is the CDFI Fund's CIMS tool. Here are the government and third-party tools to use while 2027 maps await certification.
- Opportunity Zone key dates and timelineKey Opportunity Zone dates: new zones take effect Jan. 1, 2027 through Dec. 31, 2036, plus the 180-day, 5-year, 10-year and 30-year investor clocks.
Data centers in Opportunity Zones
Why data centers and Opportunity Zones fit, and the rules that matter for digital infrastructure.
- Data centers in Opportunity Zones: the complete guideData centers can qualify for Opportunity Zone benefits if they meet the fund and business tests. The key issues: triple-net leases, IT equipment and power timing.
- Why data centers are a natural fit for Opportunity ZonesData centers fit Opportunity Zones because they need patient equity, last decades and are built where land and power are. Here is the case, and where it breaks.
- How a data center Opportunity Zone fund worksA data center OZ fund takes capital gains within 180 days, invests through an operating QOZB that builds and runs the facility, and holds 10+ years to exit tax-free.
- AI data centers and Opportunity ZonesAI data centers follow the same Opportunity Zone rules as other data centers, but GPU costs, 120 kW racks and gigawatt power needs sharpen the timing issues.
- Hyperscale data center campuses in Opportunity ZonesHow hyperscale data center campuses fit the Opportunity Zone rules: who gets the benefit, the triple-net lease issue, 31-month cash limits and rural zones.
- Edge data centers in Opportunity ZonesEdge data centers can earn Opportunity Zone benefits. How the 70% property and 50% income tests apply to multi-site networks, leased sites and the 2027 maps.
- Colocation data centers in Opportunity ZonesWhy colocation fits the Opportunity Zone active business rules, what the QOZB owns versus customers, how revenue meets the 50% test, and how 10-year exits work.
- Powered shell and triple-net data centers in Opportunity ZonesWhy a powered shell leased triple-net to one hyperscaler is the riskiest Opportunity Zone data center structure, what the regulations say, and the responses.
- Servers, equipment and the Opportunity Zone rulesHow servers and data center equipment fit the Opportunity Zone rules: tenant vs. QOZB ownership, the 70% test, 5-to-6-year server lives and a 10-year hold.
- Converting industrial buildings into data centers in Opportunity ZonesHow mill and factory conversions to data centers meet the Opportunity Zone substantial improvement test: 100%, or 50% in rural zones, within 30 months.
- Data center power timelines and the Opportunity Zone clockData center power can take up to 7 years, but the Opportunity Zone working capital safe harbor runs 31 to 62 months. How sponsors sequence power and capital.
- Rural data centers and Opportunity ZonesRural Opportunity Zones give data center investors a 30% step-up via a rural fund and a 50% substantial improvement test. How the rules and rural sites work.
- The economic impact of data centers in Opportunity ZonesData centers in Opportunity Zones bring about 50 permanent jobs each, large tax bases and real costs in power, water and incentives. What the evidence shows.
- Data center site selection inside Opportunity ZonesHow to choose a data center site in an Opportunity Zone: power first, then tract status on the 2027 maps, then land, fiber, water, hazards and local support.
Structuring & investing
Fund structures, financing, due diligence and what investors should ask a sponsor.
- Opportunity Zone fund structuresHow Qualified Opportunity Funds are structured: partnership vs. corporation, direct vs. two-tier QOZB, single vs. multi-asset, and rural QROFs, with tradeoffs.
- Single-asset vs. multi-asset Opportunity Zone fundsSingle-asset OZ funds offer control and a clean 10-year exit; multi-asset funds offer diversification but layered fees, blind-pool risk and early-sale gain.
- Opportunity Zone fund due diligence checklistA due diligence checklist for Opportunity Zone funds: tax qualification, sponsor, project, power, documents, fees and reporting, with red flags for data centers.
- Opportunity Zone fund fees and termsOpportunity Zone fund fees and terms: management fees, promotes, preferred returns and waterfalls, plus OZ-specific terms like tax distributions and hold periods.
- Debt and financing in Opportunity Zone projectsHow debt works in Opportunity Zone projects: §752 basis, debt-financed distributions, the two-year disguised sale rule, refinancing and inclusion events.
- How to choose an Opportunity Zone sponsorHow to choose an Opportunity Zone sponsor: track record, co-investment, fees, OZ compliance capacity, data center expertise and regulatory checks, with a scorecard.
- The risks of Opportunity Zone investingThe main risks of Opportunity Zone investing: tax-law change, compliance failure, 10-year illiquidity, concentration, and power and build risk for data centers.
- Combining Opportunity Zones with other incentivesHow Opportunity Zone benefits combine with state data center tax exemptions, PILOTs, 100% bonus depreciation, New Markets Tax Credits and state OZ conformity.
- What investors should expect in Opportunity Zone fund reportingWhat Opportunity Zone fund investors should receive: K-1s, Form 8997 data, 90% asset test results, audited financials and project updates, plus new IRS rules.
- Securities rules for Opportunity Zone fundsHow securities law applies to Opportunity Zone funds: Rule 506(b) and 506(c), accredited investors, Form D, and Investment Company Act and Advisers Act basics.
- Why Opportunity Zone investments must be equityOnly an equity interest in a Qualified Opportunity Fund can defer gain. Loans to a QOF do not qualify, but the fund and its businesses can still borrow.
- The capital stack for an Opportunity Zone data centerHow an Opportunity Zone data center is financed: QOF equity first, construction debt on top, tenant-funded fit-out outside the stack, and where each layer sits.
Development & operations
Building and running a data center on the Opportunity Zone clock: power, water, fiber, leases and compliance.
- Opportunity Zone data center development timelineHow a data center schedule of land, power, construction and energization lines up with the OZ clocks: 180 days, 31 and 62 months, 30 months, years 5 and 10.
- Data center construction costs and Opportunity Zone budgetingData centers cost about $8.9M to $23.3M per MW to build (Cushman & Wakefield, 2026). How to budget that cost under the OZ working capital and improvement rules.
- Power interconnection for Opportunity Zone data centersGrid power can take up to 7 years for large data centers. How interconnection, large-load tariffs and on-site generation interact with the OZ timing rules.
- Water and cooling for Opportunity Zone data centersU.S. data centers used about 17.4 billion gallons of water on site in 2023. How cooling design, water supply and OZ rules shape a data center project.
- Fiber connectivity for rural Opportunity Zone data centersRural OZ data centers need diverse long-haul fiber, not just power. How to check routes, what fiber costs in time, and how the OZ rules treat laterals and IRUs.
- State data center tax incentives and Opportunity Zones38 states offer data center tax incentives, but Ohio, Arizona and Illinois paused programs in 2026. How state breaks stack with federal Opportunity Zone benefits.
- Data center lease structures in Opportunity ZonesMerely entering into a triple-net lease is not an active trade or business under the OZ rules. How powered shell, turnkey and colocation leases fit the test.
- Managing a data center QOZBA data center QOZB must pass the 70%, 50%, 40% and 5% tests, document working capital and meet new reporting rules. What ongoing management involves.
- Buying land for an Opportunity Zone data centerBefore buying land for an Opportunity Zone data center, confirm the tract, power, water, fiber and zoning. Land skips substantial improvement but must be used.
- Community engagement for Opportunity Zone data centersHow Opportunity Zone data center developers should engage communities: what residents worry about, what the jobs and tax evidence shows, and how to earn approval.
Guides by role
Where to start if you are an investor, landowner, developer, adviser or community leader.
- Opportunity Zones for investors with capital gainsInvestors can put a capital gain in an Opportunity Zone fund within 180 days, defer tax five years, get a 10% or 30% step-up, and exclude growth after 10 years.
- Opportunity Zones for landownersLandowners in or near Opportunity Zones can sell and reinvest the gain, contribute land, or ground lease to a QOZB. How each option works and what to watch.
- Opportunity Zones for data center developersWhat data center developers need to know about Opportunity Zones: QOZB tests, the 31-month safe harbor vs power timelines, triple-net lease risk and server cycles.
- Opportunity Zones for family officesHow family offices use Opportunity Zones: which entity invests, own fund vs sponsor fund, estate and gift rules, the five-year tax bill and the 30-year basis cap.
- Opportunity Zones for CPAs and financial advisersA CPA and adviser playbook for Opportunity Zones: eligible gain, 180-day start dates, Forms 8949, 8997 and 8996, the year-five inclusion, penalties and state rules.
- Opportunity Zones for economic developers and communitiesWhat Opportunity Zones mean for communities: how zones are designated, what data centers add to taxes and jobs, local opposition trends, and what to negotiate.
- Opportunity Zones for business owners selling a companySelling a business? Invest only the capital gain in an Opportunity Zone fund within 180 days of closing or of each installment to defer tax and exclude growth.
- Opportunity Zones for real estate investors selling propertySelling real estate? Gross §1231 gain can go into an Opportunity Zone fund within 180 days of sale; ordinary recapture cannot. How it compares with a 1031.