VIEWpoints-Issue 1-2026 | Page 7

Real Estate Tax Rules Overview Below is a breakdown of the most common real estate situations and how each tax rule may apply.
Situation
Section 469( Passive vs. Nonpassive)
QBI NIIT Key Levers / Notes
Long-term rental
Passive by default; losses often suspended unless the $ 25,000 active participation allowance or REP + material participation applies.
Often qualifies, if it rises to a Section 162 trade / business or you meet the rental safe harbor( separate books + 250 hours + contemporaneous records).
Qualifies, if above NIIT thresholds, unless it’ s a Section 162 trade / business and nonpassive to you( NIIT exclusion may apply).
Don’ t confuse QBI safe harbor hours with material participation. REP helps for Section 469; NIIT still needs Section 162 + nonpassive analysis.
Short-term rental: Average stay ≤ 7 days or ≤ 30 days with significant services
May NOT be treated as a“ rental activity.” Then it’ s analyzed like an operating business and material participation becomes the main pivot.
Often qualifies, if run at a business level( frequently Section 162). The rental safe harbor is optional and applies only to Section 199A.
May qualify, if Section 162 trade / business and you materially participate( nonpassive). NIIT often doesn’ t apply to that income; otherwise NIIT can apply.
The levers are( 1) whether you meet the short-term rental exception,( 2) it rises to a Section 162 trade / business and( 3) material participation.
Self-rental( rent property to your own business you materially participate in)
Net rental income may be recharacterized as nonpassive under selfrental rules.
Often qualifies, but the rental safe harbor generally excludes commonly controlled / self-rentals. Regulations may still treat it as a trade / business in some cases.
Often excluded from NIIT, if treated as derived in the ordinary course of a Section 162 trade / business and nonpassive( including certain grouped / self-rental situations).
Be careful with grouping and documentation. Income recharacterization can surprise taxpayers who expected“ passive” rental income.
Mixed-use / vacation home with personal use( Section 280A“ residence” rules)
Often passive for the rental portion. Expenses may be limited by Section 280A ordering rules when treated as a residence.
The rental safe harbor does not apply if the property is used as a residence. QBI may still be possible under facts, but safe harbor is off the table.
Often qualifies on taxable rental net income, if above thresholds unless Section 162 + nonpassive exclusion applies.
Track personal-use days carefully. Personal use can turn a“ rental” into a“ residence” for Section 280A purposes.
Rent your home fewer than 15 days( the“ 14-day rule”)
Generally, not reported as
rental activity.
Does not qualify( income
typically not reported).
Does not qualify( income
typically not reported).
If you meet the < 15-day rule, you generally don’ t report the rent, and you generally can’ t deduct rental expenses.
Triple-net lease( TNN)
Often passive. Owner
involvement is typically
limited.
The rental safe harbor excludes property leased under a triple-net lease. QBI may still be possible under facts, but safe harbor is off the table.
Often qualifies, if above thresholds, unless it clearly rises to Section 162 + nonpassive( less common in classic TNN).
TNN often looks“ investment-like,” which can affect both Section 199A( safe harbor) and NIIT analysis.
VIEWPOINTS: ISSUE 1 2026 | 05