Rock Real Estate Services Warns Opportunity Zone Sponsors of Dec. 31 Investor Tax Deadline
With deferred Opportunity Zone gains due Dec. 31 and new rules starting in 2027, fund sponsors face investor questions on basis, value and tax distributions.
Jersey City, NJ October 19th, 2026
Investors who deferred capital gains through the federal Opportunity Zone program are approaching a deadline that many of them may not have planned for. Under the program's original rules, gains rolled into a Qualified Opportunity Fund must be recognized on Dec. 31, 2026, unless an investor has already sold or otherwise triggered them. The tax is due for the 2026 tax year whether or not the investor has sold anything or received a distribution.
The program, created by the 2017 Tax Cuts and Jobs Act, let investors postpone tax on a capital gain by reinvesting it in a fund that develops or operates businesses in designated low-income areas. The deferral always had an end date. For every investor who has committed money since the program began in 2018, that date is now about ten weeks away.
"A lot of Opportunity Zone investors are about to get a tax bill for a gain they made years ago, with no cash from the fund to pay it," said Matthew Rodrigue, founder of Rock Real Estate Services, a Jersey City-based accounting firm that works exclusively with real estate owners, syndicators and funds. "Sponsors who explain that early keep their investors' trust. Sponsors who explain it in April are answering angry phone calls."
What investors will owe
The amount included in 2026 income is generally the lesser of the original deferred gain or the current fair market value of the investment, reduced by the investor's basis. Investors who held their fund interest for at least five years by the end of 2026 receive a 10 percent increase in basis, and those who invested by the end of 2019 and reached seven years receive 15 percent, which lowers the amount taxed. Because the fair market value of the investment can cap the gain, a fund whose properties have lost value may be able to reduce what its investors owe, but only with a supportable valuation.
The 2026 inclusion does not end the program's main benefit. Investors who hold a qualifying interest for at least 10 years can still elect to step up their basis to fair market value when they sell, eliminating tax on the investment's appreciation.
Questions sponsors will face
Rodrigue said the deadline shifts work onto fund sponsors, even though the tax is owed by individual investors. Investors and their tax preparers will want each investor's basis and holding period, a supportable value for the fund interest, and an answer on whether the fund plans a distribution to help cover the tax. Many funds were structured to hold property for a decade and did not budget for one.
"The investor's CPA is going to ask the sponsor for numbers, and the sponsor needs to have them," Rodrigue said. "If capital accounts live in a spreadsheet that one person maintains, that is the moment it shows."
IRS guidance issued in July 2026 (Notice 2026-40) urged funds to document capital received and spent by year-end and addressed how existing funds transition to the new rules.
A new program starts Jan. 1
The deadline coincides with the start of a revised program. Under the One Big Beautiful Bill Act, signed in July 2025, a new round of Opportunity Zone designations takes effect on Jan. 1, 2027. Gains invested after 2026 receive a rolling five-year deferral that starts on the date of each investment, rather than a single program-wide deadline, plus a 10 percent basis increase at five years, or 30 percent for qualifying rural funds. The 10-year exclusion for appreciation remains.
For sponsors raising new funds, the rolling deferral means tracking a separate clock for each investor's contribution. A fund that raises capital in several closings over a year will have investors whose gains come due on different dates, each of whom will need accurate basis and holding-period information.
"Under the old program, everyone's gain came due on the same day. Under the new one, every investor has a different deadline," Rodrigue said. "That is a recordkeeping job before it is a tax job."
Rodrigue suggested that sponsors take three steps before year-end: estimate the 2026 inclusion for each investor, decide whether and how to fund any tax distribution, and send investors a written explanation before tax season begins.
About Rock Real Estate Services
Rock Real Estate Services is a boutique accounting firm that works only with real estate. Led by founder Matthew Rodrigue, a former Director of Investments for a family office that oversaw a $100 million real estate portfolio, the firm provides bookkeeping, fund and entity accounting, investor capital account tracking, distribution and waterfall processing, investor reporting, partnership K-1 preparation, and tax planning for owners, syndicators and funds nationwide. Learn more at rockreservices.com.