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Opportunity Zone Compliance Handbook (2026) | OZfile

An OZfile guide

The Opportunity Zone compliance handbook

A plain English guide for sponsors and certified public accountants who need to understand the reporting system behind every Opportunity Fund.

Sponsors and CPAs 50 chapters and conclusion

Written by Charles Wismer. Reviewed July 2026.

Choose your starting point

Start where the work is

The handbook is designed to be read in order, but these two paths help readers with different starting needs.

Begin at the beginning

Chapter 1 · The deal behind every Opportunity Fund

Read straight through or jump anywhere from the contents below.

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The recurring cast

The people and cases that carry the rules

The names are fictional. Their roles make it easier to see where a fact begins, who reviews it, and where professional judgment enters.

Fund and review

Alex Rivera and Kim Chen

Alex is the sponsor who coordinates fund and investor records.

Kim is the CPA who reviews methods, calculations, adjustments, and tax treatment.

Operating-business records

Tom, Maria, Devon, Marcus, and Frank

Tom confirms identity and activities. Maria supplies accounting records. Devon supports property and housing facts.

Marcus supports construction records. Frank supplies payroll records.

Investor records

Bob, Jordan, Maya, and Dana

Bob carries a legacy investment. Jordan enters after 2026. Maya shows a trust transfer. Dana carries the rural investor example.

Three case families

Case 1

Main Street Apartments

A real estate fund moving through construction, lease-up, two measurement dates, statements, and a correction.

Case 2

Market Hall

An operating business with payroll, leased property, several activities, and a CPA adjustment.

Case 3

Rural Mill

Property-level rural treatment inside a mixed fund that also holds a nonrural investment.

Contents

Part I The original bargain and the basic structure

  1. Chapter 1 The deal behind every Opportunity Fund
  2. Chapter 2 Map the structure before you map the form
  3. Chapter 3 The three forms and the people behind them

Part II Why the rules changed

  1. Chapter 4 Why Congress rewrote the reporting

Part III How the rules changed

  1. Chapter 5 OZ 2.0 at a glance
  2. Chapter 6 How the new designation cycle changes OZ 2.0
  3. Chapter 7 What the new penalties mean and how evidence helps
  4. Chapter 8 Why the reporting year is already underway

Part IV How the work gets organized

  1. Chapter 9 Every fund tells the IRS a story
  2. Chapter 10 From test date to filing season
  3. Chapter 11 Set up the reporting year
  4. Chapter 12 Ask the right person for the right record
  5. Chapter 13 The master request list

Part V What the fund must prove about itself

  1. Chapter 14 How a fund becomes a Qualified Opportunity Fund
  2. Chapter 15 The two dates that run the fund
  3. Chapter 16 What goes into the 90 percent fraction
  4. Chapter 17 Choose the valuation method and avoid the net book value trap
  5. Chapter 18 What happens when the fund falls short
  6. Chapter 19 What the fund reports about itself

Part VI What the operating business must prove

  1. Chapter 20 How an operating business qualifies
  2. Chapter 21 What makes purchased or leased property count
  3. Chapter 22 Original use or substantial improvement
  4. Chapter 23 How leased property gets a reportable value
  5. Chapter 24 How the working capital safe harbor works

Part VII The rural overlay

  1. Chapter 25 What changes when property is rural
  2. Chapter 26 When a fund becomes a Qualified Rural Opportunity Fund

Part VIII What the fund reports about each operating business, and how it arrives

  1. Chapter 27 What the fund reports about each business
  2. Chapter 28 Why industry, location, housing, and jobs now matter
  3. Chapter 29 What the operating business sends to the fund
  4. Chapter 30 How the statement is reviewed, furnished, and corrected

Part IX What the fund tracks and reports about investors

  1. Chapter 31 How an investor enters the system and starts the 180-day clock
  2. Chapter 32 Basis, mixed funds, and the amount that still matters
  3. Chapter 33 What the fund reports when an investor leaves
  4. Chapter 34 What changes when an interest is sold or transferred
  5. Chapter 35 The five-year, ten-year, and thirty-year clocks

Part X Running the collection cycles

  1. Chapter 36 Recover a test date that already passed
  2. Chapter 37 Run the midyear and year-end cycles

Part XI Where it all goes: review, package, file, correct, preserve

  1. Chapter 38 Trace every reported number to its source
  2. Chapter 39 Review the tests and exceptions
  3. Chapter 40 Adjust a number without erasing its source
  4. Chapter 41 Build the filing and statement package
  5. Chapter 42 Review, deliver, and preserve
  6. Chapter 43 Correct the work and respond to the IRS

Part XII Structures that do not fit the simple picture

  1. Chapter 44 Shared operating businesses, direct property, and multi-tier structures
  2. Chapter 45 How fiscal years and ownership changes affect the calendar
  3. Chapter 46 How wind-downs and long-term records stay intact

Part XIII Put it all together

  1. Chapter 47 Main Street Apartments from setup to filing
  2. Chapter 48 Market Hall and a real operating business
  3. Chapter 49 Rural Mill and a mixed Qualified Rural Opportunity Fund
  4. Chapter 50 The 30-day, 60-day, and 90-day readiness plan