Most of the "STR cost segregation" conversation online is about the §469(c)(7) 7-day rule — the short-term rental exception that makes cost-seg losses non-passive when the average stay is seven days or less. But that's only one of two paths. The other is IRC §469(c)(7)(B): real estate professional status (REPS), which unlocks the same non-passive treatment for long-term rentals. For an LTR investor who qualifies as a REPS, cost segregation produces identical Year-1 economics as it does for an STR under the 7-day rule — outsized bonus depreciation deductions offsetting W-2 wages, business income, or other non-passive income. This guide walks the REPS 750-hour + 50% test under IRC §469(c)(7)(B), the critical Reg. §1.469-9(g) grouping election, material participation requirements, documentation posture, common qualification pitfalls, and how DepreciMax screens LTR properties pre-acquisition just like it does for STRs.
Important — we are not CPAs or tax attorneys. REPS qualification, grouping elections, and material participation determinations are fact-sensitive tax positions with real audit exposure (REPS is a well-documented IRS examination focus area). Nothing in this article is tax advice, legal advice, or a substitute for professional counsel. Before claiming REPS status, making a §1.469-9(g) grouping election, or filing a cost segregation study against ordinary income, engage a licensed CPA, Enrolled Agent, or tax attorney who can evaluate your specific facts and circumstances.
TL;DR — cost segregation + REPS for long-term rental investors (2026)
• Two paths to non-passive rental losses: §469(c)(7) 7-day STR rule (short-term rentals) OR REPS under IRC §469(c)(7)(B) (any rental, including long-term).
• REPS test (two parts, same tax year): (1) more than 750 hours in real property trades or businesses, AND (2) more than 50% of all personal services in those activities. Both must be met.
• Only one spouse must qualify for married filing jointly — the other spouse's W-2 does not disqualify.
• Grouping election under Reg. §1.469-9(g): aggregates all rental activities into a single activity for material participation testing. Critical for multi-property LTR investors.
• Material participation still required on each activity (or the aggregated group) under Reg. §1.469-5T — REPS alone is not sufficient.
• Cost seg mechanics identical to STRs: 100% bonus depreciation under IRC §168(k) on 5-year personal property and 15-year land improvements, filed on Form 4562 (or Form 3115 §481(a) for look-back).
• DepreciMax works for LTRs too — same $99 pre-acquisition screen, same AI photo analysis, same calibrated Year-1 estimate.
The REPS unlock: cost seg against ordinary income without the 7-day rule
For passive activity loss (PAL) purposes under IRC §469, rental real estate activities are per se passive — losses can only offset passive income — unless one of two exceptions applies. The first is the §469(c)(7) short-term rental exception: if the average rental period is 7 days or less, the activity isn't treated as a rental activity for PAL purposes at all. The second is IRC §469(c)(7)(B): a real estate professional (REPS) is not subject to the per-se-passive rule for their rental real estate activities, so those activities become potentially non-passive if the taxpayer also materially participates.
The practical outcome for a REPS-qualified LTR investor:
- Cost segregation reclassifies 20–30% of depreciable basis into 5-year and 15-year property, 100% bonus-eligible under IRC §168(k)
- Year-1 losses from the cost-seg-driven depreciation offset ordinary non-passive income (W-2 wages, business income, other active earnings)
- Economics are identical to an STR under the 7-day rule — same Year-1 deduction, same marginal-rate tax savings, same post-close engineer-signed filing deliverable
What makes REPS different is the qualification burden. The 7-day STR rule is a property-side test (what's the average rental period?). REPS is a taxpayer-side test (how much of your time do you spend in real property trades or businesses?). This matters because REPS qualification is one of the most heavily examined areas in the entire PAL regime — and the documentation posture is proportionally serious.
IRC §469(c)(7)(B): the 750-hour + >50% test
REPS status requires satisfying both parts of a conjunctive test within the same tax year:
Part 1: More than 750 hours of personal services in real property trades or businesses. The 750-hour threshold is a hard floor — 749 hours fails. "Real property trades or businesses" are enumerated in Reg. §1.469-9(b)(4) and include real property development, redevelopment, construction, reconstruction, acquisition, conversion, rental, operation, management, leasing, or brokerage.
Part 2: More than 50% of all personal services performed during the year in real property trades or businesses. This is the trickier test for working professionals — if you have a full-time W-2 job (say, 2,000 hours per year), you'd need to perform more than 2,000 hours in real property trades or businesses to satisfy the >50% test, which is effectively impossible without quitting the day job. The >50% test is what disqualifies most high-income W-2 earners from REPS, even when they could theoretically hit 750 hours in rental activities.
Both parts must be documented contemporaneously. The IRS does not require a specific format, but reconstructing a time log after the fact is weak evidence — the taxpayer has lost in Tax Court on exactly this issue repeatedly (Pohoski v. Commissioner, Hakkak v. Commissioner, and others). The practical standard is a dated running log of hours by activity.
Why LTR investors overlook cost seg (and what they're leaving behind)
Three reasons the LTR cost seg conversation gets skipped:
1. The default assumption is "LTR losses are passive." True without REPS. But a REPS-qualified LTR investor often doesn't realize REPS flips the passive classification, so they treat the cost seg deduction as useless offsetting-passive-income-only, and skip the study entirely.
2. The "cost seg is for STRs" marketing narrative. Most cost seg marketing content leads with the 7-day STR rule because it's the easier qualifier (no personal-services test). LTR investors reading STR-focused content assume cost seg doesn't apply to them.
3. The 750-hour test seems unachievable. For a W-2 professional with 1 or 2 LTRs, hitting 750 hours of rental-related work is a stretch (unless they're also doing their own property management, maintenance, and improvements, which many are). For a full-time real estate agent, developer, or syndicator, 750 hours is trivial — and those professionals are often leaving six-figure Year-1 deductions on the table because they haven't paired REPS with cost seg.
The dollar impact: a $500K LTR with cost seg produces roughly $75K–$100K of Year-1 bonus depreciation. At a 37% marginal rate, that's $28K–$37K in Year-1 federal tax savings for a REPS-qualified investor. Over a portfolio of 5–10 LTRs, the cumulative Year-1 tax savings easily clears $150K–$300K.
The §1.469-9(g) grouping election: critical for multi-property REPS
REPS status gets a LTR investor over the per-se-passive hurdle — but material participation under Reg. §1.469-5T still has to be satisfied on each rental activity. The default rule treats each separately-owned rental property as a separate activity, which means a REPS with 5 LTRs would need to materially participate in each one (hard to hit the 500-hour or 100-hour-plus-no-one-else-more tests on 5 individual properties).
The Reg. §1.469-9(g) grouping election solves this. The election allows a real estate professional to treat all of their rental real estate activities as a single activity for purposes of determining material participation. Mechanics:
- Election is made by attaching a statement to a timely filed return (or on an amended return in limited circumstances)
- Once made, the election is binding for all future years — it cannot be revoked except with IRS consent
- The grouping applies only to the REPS spouse's rental activities (if married filing jointly)
- New rental properties acquired after the election are automatically included in the group
With the grouping election in place, a REPS can satisfy material participation across the entire aggregated rental activity (e.g. 500 hours total across 5 properties). Without it, the taxpayer has to prove material participation property-by-property, which is often not practically possible even for actively-involved owners.
Timing and permanence matter. The §1.469-9(g) election is irrevocable without IRS consent and has long-tail implications for suspended losses on disposition. Before making the election, work through the specific numbers with a licensed CPA — this is one of those situations where the "do I group?" decision has to account for the taxpayer's entire future rental trajectory, not just the current year.
Pre-purchase screening for LTR acquisitions (DepreciMax works here too)
Pre-purchase cost segregation screening is just as valuable for REPS-qualified LTR investors as it is for STR buyers. The use case is identical: evaluate candidate properties before writing an offer, pick the one with the strongest Year-1 math, then engage the cost seg firm post-close.
DepreciMax runs on any US property address regardless of intended rental use. The $99 pre-purchase report:
- Analyzes the listing photos of the property interior and exterior (same AI pipeline as STR screens)
- Pulls the county assessor land ratio (critical — LTR properties typically have higher land ratios than STR-popular markets, which affects depreciable basis)
- Returns a Year-1 bonus depreciation estimate specific to the property
- Is agnostic to whether the owner intends STR or LTR rental use — the deduction mechanics are property-side, the passive/non-passive classification is taxpayer-side
For a REPS working through a shortlist of 3–5 candidate LTRs, running $99 screens on each is a cheap pre-offer input that typically shifts acquisition decisions toward higher-deduction properties. For the full tool landscape see our cost segregation apps for Airbnb hosts article — the pre-purchase side applies identically.
Pre-purchase screening for your LTR acquisitions
How cost seg stacks with bonus depreciation under §168(k)
For a REPS-qualified LTR, the mechanics are identical to the STR cost seg mechanics:
- Cost segregation study reclassifies components of the depreciable basis into 5-year personal property (appliances, finish flooring, cabinetry, decorative lighting, FF&E), 15-year land improvements (landscaping, outdoor lighting, retaining walls, decorative fencing, pergolas), and 39-year or 27.5-year structural property (framing, roof, HVAC ductwork, embedded tile)
- IRC §168(k) bonus depreciation allows 100% first-year expensing of the 5-year and 15-year buckets (under OBBBA, 100% is permanent for property placed in service on or after 2025-01-19)
- REPS status + material participation treats the resulting losses as non-passive, allowing them to offset W-2 wages, business income, or other ordinary income
- Filing: Form 4562 for current-year studies; Form 3115 with §481(a) adjustment for look-back studies on LTRs placed in service in prior years (Rev. Proc. 2015-13 automatic consent)
The dollar scale on a $500K LTR with 25% component reclassification is $125K of depreciable basis reclassified to 5-year/15-year, 100% bonus-eligible — a $125K Year-1 deduction, producing roughly $46K in Year-1 federal tax savings at a 37% marginal rate (state tax savings on top of that). For a REPS with 5 LTRs, repeat.
Common REPS documentation pitfalls
- Reconstructed time logs. Tax Court has repeatedly ruled against taxpayers who produced reconstructed logs post-audit. Contemporaneous records with dated entries are the standard. Even a simple weekly running log in a spreadsheet beats a reconstruction.
- Conflating REPS with material participation. REPS is activity classification (your rental activities are not per-se passive). Material participation is a separate per-activity test under Reg. §1.469-5T. Both are required — the grouping election makes the second one practically achievable for multi-property investors.
- Failing the >50% test. The 750-hour threshold is the easy part. The >50% test is what disqualifies most working professionals — your real property hours have to exceed your W-2 hours and all other non-real-property services combined.
- Counting non-qualifying activities. Only hours in real property trades or businesses as defined in Reg. §1.469-9(b)(4) count. Investing (reading real estate news, watching market data, portfolio review time) typically does not count. Operations (actively managing a specific rental property) does.
- Married-filing-jointly confusion. One spouse qualifies individually. If the W-2-earning spouse is trying to qualify, the hours test is often impossible. The strategy is usually to have the non-W-2 spouse pursue REPS while the W-2 spouse carries the household income.
- Making the grouping election too casually. The §1.469-9(g) election is irrevocable without IRS consent and has implications for suspended losses on disposition of a specific property. Think through the long-tail before electing.
Screen your next long-term rental — $99
DepreciMax runs on any US property address, STR or LTR. If you qualify as REPS, cost seg produces the same Year-1 economics on an LTR as on an STR — and the $99 pre-purchase estimate tells you how much before you write the offer.
Run a Property Report — $99 →Or see the cost segregation firms roundup for post-close engineer-signed studies →
Frequently Asked Questions
What is a real estate professional under IRC §469?
A real estate professional (REPS) under IRC §469(c)(7)(B) is a taxpayer who performs more than 750 hours of services during the tax year in real property trades or businesses AND more than one-half of all personal services performed during the year are in real property trades or businesses. Qualifying activities are enumerated in Reg. §1.469-9(b)(4). REPS status alone does not make losses non-passive — the taxpayer must also materially participate in each rental activity (or group them via the §1.469-9(g) election).
How many hours do I need to qualify as a real estate professional?
More than 750 hours per year in real property trades or businesses, AND more than 50% of all personal services performed during the year must be in those activities. Both tests must be met in the same year. The hours must be contemporaneously documented — reconstructing a time log after the fact is weak evidence that has lost in Tax Court repeatedly (e.g. Pohoski v. Commissioner).
Does REPS status alone unlock bonus depreciation on long-term rentals?
No. REPS reclassifies rental activities from automatically-passive to potentially non-passive — but the taxpayer still must materially participate in each rental activity under Reg. §1.469-5T. The practical path for LTR investors with multiple rentals is to combine REPS status with the Reg. §1.469-9(g) grouping election, which aggregates all rental activities into one for material participation testing.
Can my spouse qualify as REPS for us jointly?
Yes. For married filing jointly, only one spouse must satisfy the 750-hour and >50% tests under IRC §469(c)(7)(B)(ii). The non-REPS spouse's W-2 wages, business income, or other personal services do not count against the REPS spouse's qualification. Once one spouse qualifies, their status applies to the couple's rental activities for passive-loss purposes.
Do I need the 7-day STR rule if I have REPS?
No. REPS and the §469(c)(7) 7-day STR rule are two separate pathways to non-passive loss treatment for rental activities. The 7-day rule applies to short-term rentals with average stays under 7 days — the activity is not treated as a rental activity at all, so losses are automatically non-passive if the taxpayer materially participates. REPS applies to long-term rentals that would otherwise be automatically passive.
What is the grouping election under Reg. §1.469-9(g)?
The Reg. §1.469-9(g) election lets a real estate professional treat all of their rental real estate activities as a single activity for purposes of determining material participation. Without the election, a REPS with 5 rentals would need to materially participate in each one separately (hard to hit 500 hours per property). With the election, the REPS can hit material participation across the aggregated activity. The election is made by attaching a statement to the taxpayer's return and is binding for all future years.
Does cost segregation work on a $300,000 long-term rental?
Yes mechanically — the IRC §168(k) bonus depreciation rules apply the same way for LTRs as for STRs. The decision is economic: at $300K purchase price, the Year-1 cost seg deduction typically lands in the $40K to $70K range, which produces $15K to $26K in Year-1 tax savings at a 37% marginal rate. That's enough to justify a $900 to $2,500 engineer-signed study. The constraint for LTRs is REPS qualification — without it, the loss is passive and only offsets passive income.
Can DepreciMax screen long-term rental properties?
Yes. DepreciMax runs on any US property address — short-term rental or long-term. The $99 pre-purchase estimate works the same way: AI analysis of listing photos plus the county assessor land ratio produces a property-specific Year-1 bonus depreciation estimate. The output is agnostic to whether the owner intends to run the property as an STR or LTR; the REPS qualification layer sits on the owner's side, not the property's.
Sources & further reading
- IRC §469(c)(7)(B) — Real estate professional qualification: 26 U.S.C. §469
- Treasury Reg. §1.469-9 — Real estate professional rules (grouping election at paragraph (g)): 26 CFR §1.469-9
- Treasury Reg. §1.469-9(b)(4) — Real property trades or businesses (11 enumerated activities)
- Treasury Reg. §1.469-5T — Material participation (seven tests): 26 CFR §1.469-5T
- IRC §168(k) — Bonus depreciation (100% permanent under OBBBA 2025-07-04): 26 U.S.C. §168
- IRS Publication 946 — How to Depreciate Property: irs.gov/publications/p946
- IRS Form 3115 — Application for Change in Accounting Method: irs.gov/forms-pubs/about-form-3115
- Rev. Proc. 2015-13 — automatic consent for change in accounting method: irs.gov Rev. Proc. 2015-13
- Pohoski v. Commissioner, T.C. Memo. 1998-17 — contemporaneous time log requirement for REPS
- STR Cost Segregation for CPAs: A Client Workflow: CPA client workflow
- Pre-Purchase vs. Post-Purchase Cost Segregation: pre- vs post-purchase decision framework
- Best Cost Segregation Firms for STR Investors (2026): cost segregation firms roundup
Disclaimer. DepreciMax is a technology company that publishes bonus depreciation screening tools and educational content. We are not CPAs, Enrolled Agents, tax attorneys, licensed engineers, or an authorized representative of any taxpayer before the IRS. Nothing in this article is tax advice, legal advice, or a substitute for professional counsel. REPS qualification, the Reg. §1.469-9(g) grouping election, material participation determinations, and the application of IRC §469(c)(7)(B) are fact-sensitive positions with significant audit exposure — before claiming REPS or filing a cost segregation study against ordinary income, engage a licensed CPA, Enrolled Agent, or tax attorney who can evaluate your specific facts and circumstances. Firm names, pricing, and feature descriptions were current as of the publish date and were sourced from each vendor's public website.