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Expert insights on rental property investing, tax optimization, and AI-powered portfolio management.

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1031 Exchange Boot and Depreciation Recapture: Calculating What You Actually Owe
Tax Tips 04/21/2026 · 7 min read · 91

1031 Exchange Boot and Depreciation Recapture: Calculating What You Actually Owe

A 1031 exchange is not tax-free. It is tax-deferred, and depending on how the deal is structured, you may still owe tax on "boot" and depreciation recapture even if the exchange itself is valid. This guide shows how to calculate boot, model mortgage boot (the trap), and figure out exactly what your CPA is going to bill you for.

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DIY Cost Segregation for Small Rental Properties: Is It Worth the Risk?
Cost Segregation 04/21/2026 · 6 min read · 84

DIY Cost Segregation for Small Rental Properties: Is It Worth the Risk?

Software platforms now sell cost segregation studies for $500 to $1,500 that promise the same tax benefit as a $5,000 engineering study. On a small rental where the study cost is a big percentage of the benefit, DIY sounds attractive. This post walks through what DIY actually looks like, where the approach breaks down, how the IRS views it, and the hybrid approach that can give you most of the upside without the audit risk. For the wider playbook, start with [the cost segregation pillar](https:/

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5 Year vs 15 Year Depreciation: Cost Seg Components Guide
Cost Segregation 04/21/2026 · 6 min read · 269

5 Year vs 15 Year Depreciation: Cost Seg Components Guide

When a cost segregation engineer walks your rental property, they are dividing every component into one of three buckets: 5 year personal property, 15 year land improvements, or 27.5 year building shell. This post walks through exactly what lives in each bucket, the typical percentage splits on a residential rental, and how the components flow onto Schedule E. For the wider playbook, start with [the cost segregation pillar](https://blog.doorvault.app/cost-segregation-rental-property).

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Cost Segregation vs Straight Line Depreciation: A Side by Side for Rental Owners
Cost Segregation 04/21/2026 · 5 min read · 87

Cost Segregation vs Straight Line Depreciation: A Side by Side for Rental Owners

Every rental investor depreciates their property. The only question is whether you use the default straight line schedule or pay an engineer to run cost segregation and accelerate it. This post walks through the mechanical difference, the present value comparison, when straight line is still the right call, and the audit risk delta between the two approaches. For the wider playbook, start with [the cost segregation pillar](https://blog.doorvault.app/cost-segregation-rental-property).

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Cost Segregation for Short Term Rentals: The Active Income Loophole Explained
Cost Segregation 04/21/2026 · 7 min read · 76

Cost Segregation for Short Term Rentals: The Active Income Loophole Explained

The short term rental loophole is the single most aggressive legal tax strategy available to high W2 earners who own investment real estate. Combined with cost segregation, it can offset six figures of W2 income against rental losses in a single tax year without needing real estate professional status. This post walks through why STRs unlock active income treatment, the 7 day rule, material participation tests, how cost seg layers on top, and the mistakes that cost investors the loophole entirel

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Depreciation Recapture on Rental Property: The Trap Nobody Warns You About
Cost Segregation 04/21/2026 · 7 min read · 55

Depreciation Recapture on Rental Property: The Trap Nobody Warns You About

Cost segregation gets sold as a near free money tax move. What gets glossed over is what happens when you actually sell the property, because the IRS recaptures the depreciation you took and taxes it at rates that can eat most of the strategy's upside. This post walks through what recapture actually is, why Section 1245 is worse than Section 1250, why cost seg makes recapture harder not easier, and how to manage the problem before it bites you at closing. For the wider playbook, start with [the

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Bonus Depreciation in 2026: The 40% Phase Down and What It Means for Rental Investors
Cost Segregation 04/21/2026 · 7 min read · 131

Bonus Depreciation in 2026: The 40% Phase Down and What It Means for Rental Investors

Bonus depreciation is the single largest tax lever for rental investors who run cost segregation studies, and it is phasing down on a fixed schedule. 2026 is the 40% year, 2027 drops to 20%, and 2028 hits zero unless Congress acts. If you are planning a purchase and a study, the math is meaningfully different depending on which tax year the property goes into service. This post walks through the current schedule, what qualifies, how it interacts with cost seg, and what 2027 and beyond look like.

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