On January 18, 2019, the IRS issued the safe harbor for rental real estate to be treated as a trade or business for purposes of IRC 199A's Qualified Business Income 20% deduction.

Real etate professionals, who operate "a rental real estate enterprise... [which is] an interest in real property held for the production of rents and may consist of an interest in multiple properties," should study the safe harbor closely as it can make a huge difference in your pocketbook. Interestingly, while multiple properties may qualify as the same enterprise, "[c]ommercial and residential real estate may not be part of the same enterprise."

According to the IRS, the safe harbor requires:

(A) Separate books and records are maintained to reflect income and expenses for each rental real estate enterprise;
(B) For taxable years beginning prior to January 1, 2023, 250 or more hours of rental services are performed (as described in this revenue procedure) per year with respect to the rental enterprise. For taxable years beginning after December 31, 2022, in any three of the five consecutive taxable
years that end with the taxable year (or in each year for an enterprise held for less than five years), 250 or more hours of rental services are performed (as described in this revenue procedure) per year with respect to the rental real estate enterprise; and
(C) The taxpayer maintains contemporaneous records, including time reports, logs, or similar documents, regarding the following: (i) hours of all services performed; (ii) description of all services performed; (iii) dates on which such services were performed; and (iv) who performed the services. Such records are to be made available for inspection at the request of the IRS. The contemporaneous records requirement will not apply to taxable years beginning prior to January 1, 2019

To claim the safe harbor, "include a statement attached to the return on which it claims the section 199A deduction or passes through section 199A information that the requirements in Section 3.03 of this revenue procedure have been satisfied."