--- title: "Cost Segregation Timing: The Rule Most Investors Miss | Addicted to ROI" description: "Bonus depreciation is set by the year you bought, not the year you do the study. How cost seg timing works and the checklist to run before paying for one." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "Organization", "@id": "https://addictedtoroi.com/#organization", "name": "Addicted to ROI", "url": "https://addictedtoroi.com", "logo": { "@type": "ImageObject", "url": "https://addictedtoroi.com/images/logo.png" }, "description": "Live your best life funded by your investments. Real estate, taxes, travel, and business, by Jennifer Beadles.", "founder": { "@id": "https://addictedtoroi.com/#jennifer" }, "sameAs": [ "https://agentsinvest.com", "https://doorprofit.com", "https://repstime.com", "https://strhours.com", "https://kidspayroll.com", "https://rentstager.com" ] }, { "@context": "https://schema.org", "@type": "WebSite", "@id": "https://addictedtoroi.com/#website", "url": "https://addictedtoroi.com", "name": "Addicted to ROI", "publisher": { "@id": "https://addictedtoroi.com/#organization" }, "potentialAction": { "@type": "SearchAction", "target": { "@type": "EntryPoint", "urlTemplate": "https://addictedtoroi.com/blog/?q={search_term_string}" }, "query-input": "required name=search_term_string" } }, { "@context": "https://schema.org", "@type": "Person", "@id": "https://addictedtoroi.com/#jennifer", "name": "Jennifer Beadles", "url": "https://addictedtoroi.com/about/", "jobTitle": "Founder, Addicted to ROI", "description": "Real estate investor and founder of Addicted to ROI. Built an 8-figure rental portfolio across multiple states and teaches everyday investors how to build passive income.", "worksFor": { "@id": "https://addictedtoroi.com/#organization" }, "sameAs": [ "https://agentsinvest.com", "https://doorprofit.com", "https://repstime.com", "https://strhours.com", "https://kidspayroll.com", "https://rentstager.com" ] }, { "@context": "https://schema.org", "@type": "Article", "mainEntityOfPage": { "@type": "WebPage", "@id": "https://addictedtoroi.com/blog/cost-seg-timing/" }, "headline": "Cost Segregation Timing: The Rule Most Investors Miss", "description": "Bonus depreciation is set by the year you bought, not the year you do the study. How cost seg timing works and the checklist to run before paying for one.", "image": "https://images.unsplash.com/photo-1554224155-1696413565d3?w=800&q=80", "datePublished": "2026-07-04", "dateModified": "2026-07-04", "author": { "@id": "https://addictedtoroi.com/#jennifer" }, "publisher": { "@id": "https://addictedtoroi.com/#organization" }, "speakable": { "@type": "SpeakableSpecification", "cssSelector": [ ".tldr-answer", "h1" ] } }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://addictedtoroi.com" }, { "@type": "ListItem", "position": 2, "name": "Blog", "item": "https://addictedtoroi.com/blog" }, { "@type": "ListItem", "position": 3, "name": "Tax Strategies", "item": "https://addictedtoroi.com/blog?category=tax-strategies" }, { "@type": "ListItem", "position": 4, "name": "Cost Segregation Timing: The Rule Most Investors Miss", "item": "https://addictedtoroi.com/blog/cost-seg-timing/" } ] }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Can I do a cost segregation study years after buying a property?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. The bonus depreciation percentage is determined by the year the property was placed in service, not the year of the study. A property bought in a 100% bonus year can still capture that rate through a later study, with your CPA handling the catch-up on your return." } }, { "@type": "Question", "name": "How much does a cost segregation study cost?", "acceptedAnswer": { "@type": "Answer", "text": "Roughly $1,000 for a single family rental and around $2,500 for small multifamily, based on our own studies. Larger commercial properties cost more. The study only pays for itself if your tax classification lets you use the accelerated losses." } }, { "@type": "Question", "name": "Is cost segregation worth it without real estate professional status?", "acceptedAnswer": { "@type": "Answer", "text": "Often not immediately. Without REPS (or another path to non-passive treatment), the accelerated losses are typically suspended as passive losses rather than offsetting your active income. Confirm your classification first; the 750-hour REPS test is the usual gateway." } } ] } ] --- [![Addicted to ROI](/images/logo.png)](/) [Travel](/pillars/travel/)[Real Estate](/pillars/real-estate/)[Tax Savings](/pillars/tax-savings/)[Business](/pillars/business/)[Paths](/paths/)[Blog](/blog/)[Tools](/tools/)[Apps](/software/)[About](/about/) [Login](https://members.addictedtoroi.com/) Subscribe [Travel](/pillars/travel/)[Real Estate](/pillars/real-estate/)[Tax Savings](/pillars/tax-savings/)[Business](/pillars/business/)[Paths](/paths/)[Blog](/blog/)[Tools](/tools/)[Apps](/software/)[About](/about/)[Login](https://members.addictedtoroi.com/) [Home](/)/ [Blog](/blog/)/ [Tax Savings](/pillars/tax-savings/) Tax Strategies # Cost Segregation Timing: The Rule Most Investors Miss Bonus depreciation is set by the year you bought, not the year you do the study. How cost seg timing works and the checklist to run before paying for one. July 4, 2026 7 min read tl;dr Your bonus depreciation percentage is locked in by the year you bought the property, not the year you do the cost segregation study, so you can commission it years later and still capture your purchase-year rate. Before paying for one, confirm you can actually use the losses (your tax classification), that the timing pairs against a gain, and that your CPA is fluent in cost seg and REPS. Here is a cost segregation rule that surprises almost everyone the first time they hear it: your bonus depreciation percentage is locked in by the year you bought the property, not the year you get around to doing the study. Bought a property in a 100% bonus depreciation year but never did the cost seg? You can commission the study years later and still capture the 100% bonus rate from your purchase year. The benefit did not expire because you were busy. Your CPA handles the catch-up mechanics on your return, that is their department. That one fact changes cost seg from a "should have done it at closing" regret into a tool you can deploy strategically, which raises the real question: when should you? ## The three-question checklist I run this before paying for any study. 1. Can you actually use the benefit? A cost seg study accelerates paper losses. Whether those losses do anything for you depends on your tax classification: passive investor, active participant, or real estate professional. For most high-income W-2 households, rental losses are passive and get suspended rather than deducted, and a study mostly builds a pile of losses you cannot touch yet. Real estate professional status changes that completely, which is why REPS is the hinge for this whole strategy. The 750-hour test and what it makes possible is exactly what [REPS Time](https://repstime.com) exists to track. Know your classification before you spend a dollar on engineering reports. 2. Does the timing fit your bigger tax picture? Cost seg is a tool, not a reflex. The best use is often pairing the accelerated depreciation against a gain in the same tax year. Real example from our portfolio: in 2024 we sold an apartment complex and chose not to do a 1031 exchange. The plan instead: buy a comparable property before year end, run a cost segregation study on it, and use the accelerated depreciation to offset the gain, which works for us because we qualify as real estate professionals. Owning the sold property for two-plus years also meant long-term capital gains treatment. Same tax problem a 1031 solves, with none of the 1031's deadlines and identification rules. 3. Is your CPA actually fluent in this? If your CPA hesitates on cost seg or REPS interactions, pay a specialist for the study and the coordination. As a price anchor from our own deals: around $1,000 for a single family study and about $2,500 for a multifamily. Against five or six figures of accelerated deductions, the study cost is a rounding error, but only if questions one and two came back yes. ## The order of operations Notice the sequence: classification first, timing second, study last. Investors who buy the study first (usually because a cost seg company's marketing found them) end up with suspended losses, a bill, and a vague feeling that tax strategy does not work. It works fine. It just runs on eligibility and timing, not enthusiasm. If partnership structures affect who gets the depreciation on your deals, that interaction is covered in [How to Structure a Real Estate Partnership](/blog/real-estate-partnership-structure/), because K-1 allocations and tax benefit splits are set in your operating agreement. I am not a CPA or attorney, and none of this is tax or legal advice. Cost segregation, REPS qualification, and gain offset strategies have real eligibility requirements, so run your specific situation past a qualified tax professional. Addicted to ROI is education and community, not financial or tax advice. Talk to a qualified professional before making investment or tax decisions. ![Jennifer Beadles](/images/founders.jpg) Jennifer Beadles Real estate entrepreneur with 17 years of hands-on investing experience. Built an 8-figure rental portfolio across multiple states and has helped thousands of investors build passive income through the Addicted to ROI community. The tool that goes with this ## The software that does this for you [ Hour tracking REPS Time Log your real estate hours as you go and build the contemporaneous, audit-ready record the IRS expects for REPS, instead of reconstructing it in a panic at tax time. Start logging hours ↗ ](https://repstime.com)[ STR test STR Loophole Track the 100-hour and material-participation tests for each short-term rental so the loophole that offsets your active income actually survives an audit. Track my STR hours ↗ ](https://strhours.com) Before you close the tab ## Get the next one in your inbox. One email per new article, the day it goes up. No wall, no spam, unsubscribe in a click. [Subscribe, free →](/newsletter/)[Run a deal in the calculator](/tools/deal-analysis-calculator/) Read next [ ![The Roth IRA Is the Most Wasted Account in Real Estate](https://images.unsplash.com/photo-1554224155-8d04cb21cd6c?w=800&q=80) Tax Strategies ### The Roth IRA Is the Most Wasted Account in Real Estate 10 min read → ](/blog/self-directed-roth-ira-real-estate-investors/)[ ![How to Avoid Depreciation Recapture When You Sell a Rental Property](https://images.unsplash.com/photo-1554224155-6726b3ff858f?crop=entropy&cs=tinysrgb&fit=max&fm=jpg&ixid=M3w5MjA2ODF8MHwxfHNlYXJjaHwxfHxob3VzZSUyMGZvciUyMHNhbGUlMjBzaWduJTIweWFyZHxlbnwwfDB8fHwxNzgyOTIzODcyfDA&ixlib=rb-4.1.0&q=80&w=1080) Tax Strategies ### How to Avoid Depreciation Recapture When You Sell a Rental Property 12 min read → ](/blog/how-to-avoid-depreciation-recapture-when-you-sell/)[ ![Beyond the Basic 1031: Reverse Exchanges, DSTs, and the BRRRR-to-Exchange Playbook](https://images.unsplash.com/photo-1560184897-ae75f418493e?w=800&q=80) Tax Strategies ### Beyond the Basic 1031: Reverse Exchanges, DSTs, and the BRRRR-to-Exchange Playbook 11 min read → ](/blog/advanced-1031-exchange-strategies/) If you like this ## Read these next Hand-picked to go deeper on tax savings. 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