Elective 100% State Bonus Depreciation (SB 3101, 2023+)
Full Federal + State Expensing
4% Flat Individual · 4%/5% Graduated Corporate
Full Federal + State Stacking
22–35% Typical Reclassification
Mississippi Building Value into Short-Life Assets
All Commercial Asset Classes
Statewide Mississippi
The Basics
What Cost Segregation Does for Mississippi Property Owners
A cost segregation study identifies building components, HVAC systems, specialty flooring, parking surfaces, interior finishes, exterior lighting, that qualify for accelerated depreciation on 5-, 7-, or 15-year schedules rather than the default 27.5-year (residential rental) or 39-year (commercial) building schedule. Front-loading those deductions increases first-year cash flow and lowers current-year taxable income.
In Mississippi, that effect stacks in a particularly favorable way. Federal side: the One Big Beautiful Bill (OBBBA, P.L. 119-21) permanently restored 100% bonus depreciation for qualified property placed in service after January 19, 2025. Mississippi side: under Mississippi SB 3101 (effective for property placed in service after December 31, 2022, per Miss. Code §27-7-17), Mississippi taxpayers can elect 100% state bonus depreciation for qualified property and qualified improvement property. The Mississippi election is independent of federal treatment, meaning federal 100% + Mississippi 100% state expensing stack together to deliver Year 1 benefit at both levels. Mississippi was the second state to make full expensing permanent, making it one of the country’s most cost-seg-favorable jurisdictions.
Federal + State Expensing Stack
Mississippi’s Tax Landscape: Why Cost Segregation Delivers Full Federal + State Benefit Here
Individual Income Tax
4% flat on income above $10,000 (reduced from 4.7% for 2026 via HB 531). Mississippi is on a legislative path toward eliminating individual income tax entirely by 2036.
Corporate Income Tax
Graduated: 4% on the first $10,000, 5% on income above $10,000.
Onus Depreciation Conformity
Elective 100% state bonus depreciation for property placed in service after December 31, 2022 (Miss. Code §27-7-17, per SB 3101). Definition of qualified property and qualified improvement property references §168(k) and §168(e)(6) as they existed on January 1, 2021. Election is made annually and is independent of federal treatment.
179 Expensing
Mississippi conforms to federal §179 as amended. The 2026 §179 cap is $2.56M (indexed from OBBBA’s $2.5M) with a $4.09M phase-out threshold.
Capital Stock Tax
Mississippi’s capital stock tax is being phased down (planned reduction, per Tax Foundation 2026 state tax changes).
Property Tax
~0.75% effective on owner-occupied housing (Tax Foundation 2026). Cost segregation isn’t about reducing property tax; it’s about reducing income tax through accelerated depreciation, a separate lever entirely.
481(a) Catch-Up
For Mississippi properties owned more than a year without a study, an automatic accounting-method change (Form 3115 under Rev. Proc. 2015-13 and its updates) captures all missed depreciation into the current tax year, no amended returns required.
Every Commercial Asset Class in Mississippi
Mississippi Property Types Where Cost Segregation Delivers
Gulf Coast Casino & Hospitality
Biloxi, Gulfport, and Bay St. Louis casino resort corridor, Beau Rivage, Hard Rock, IP, and other flag properties, with heavy FF&E in gaming and specialty hospitality property.
Automotive Manufacturing
Nissan (Canton), one of the largest Nissan plants in North America, and Toyota (Blue Springs) Corolla assembly, plus Tier 1/Tier 2 auto parts suppliers across northern Mississippi.
Shipbuilding & Defense
Ingalls Shipbuilding (Pascagoula), one of the largest defense shipyards in the country (Navy amphibious ships and destroyers), highly specialized industrial property.
Agriculture & Food Processing
Poultry processing (Sanderson Farms, Tyson, Peco Foods), catfish operations across the Mississippi Delta, and specialty ag processing.
Healthcare & Medical Office
University of Mississippi Medical Center (Jackson), Baptist Health, Memorial Health, and Ochsner corridors across the state.
Multifamily
Jackson metro, Tupelo, and Hattiesburg (University of Southern Mississippi market), plus Gulf Coast multifamily development.
Manufacturing & Industrial
Steel Dynamics (Columbus) and various industrial operations across the state.
Retail & Mixed-Use
Statewide retail centers and mixed-use developments, particularly Jackson metro and Gulf Coast.
Investment Residential
5+ unit properties eligible for cost segregation.
Not sure whether your Mississippi property qualifies? Request a free benefit analysis, we’ll tell you honestly.
Credentialed. Independent. Nationwide
Why The Ambrose Group?
MAI-Certified Appraisers, In-House Engineer
The IRS prefers engineering-based studies over rule-of-thumb estimates. Our in-house engineer conducts the analysis, reviews construction documents, and physically identifies reclassifiable components. Many providers estimate; we don’t.
IRS-Compliant Methodology
Every Ambrose study follows the IRS Cost Segregation Audit Techniques Guide (ATG, Publication 5653), the industry reference for compliant, defensible studies.
30+ Years of Nationwide Experience
Headquartered in Texas, serving Mississippi and all 50 states. Cost segregation is federal, so the study is valid regardless of where your property sits.
Full Audit Support
Every study includes documentation and audit support at no additional charge.
CPA-Ready Reports
We deliver a complete reclassification package your CPA can apply directly, including the depreciation detail your CPA needs to make the Mississippi SB 3101 bonus depreciation election.
Single-Property to Multi-State Portfolios
Whether you own one Mississippi commercial building or a portfolio spanning multiple states, we scale the engagement to fit.
Real Numbers
What First-Year Savings Might Look Like in Mississippi
Results depend on property type, cost basis, construction year, and applicable depreciation rates, and we run a free benefit analysis before you commit to a study so you can see projected numbers first.
As a reference point, an Ambrose Group engagement on a $2.9M commercial property delivered $657,692 in first-year depreciation increase and $230,192 in first-year tax savings. In Mississippi specifically, both the federal 100% bonus depreciation and (with the SB 3101 election) Mississippi’s 100% state-level bonus depreciation apply, delivering full Year 1 stacking at both levels. At Mississippi’s 4% individual and 4%/5% graduated corporate rates, the combined federal + state benefit is substantial and Year 1-heavy.
Get Started
Free Mississippi Cost Segregation Benefit Analysis
Tell us about your Mississippi property, asset type, acquisition or construction cost, when it was placed in service, and we’ll run a free benefit analysis showing projected first-year depreciation and tax savings before you commit to a study.
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Right approach for your property type
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Federal + Mississippi state bonus depreciation election benefit modeled
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Clear read on the study’s projected ROI
Prefer to talk? Call us directly:
(713) 688-7733
The Ambrose Group headquarters, Jersey Village, TX (serving Mississippi and all 50 states).
Request Your Free Analysis
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How It Works, Mississippi & Nationwide
Our Cost Segregation Process
What Clients Say
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Cost Segregation in Mississippi
Frequently Asked Questions
Does Mississippi conform to federal bonus depreciation rules?
Mississippi offers an elective 100% state-level bonus depreciation, independent of federal treatment. Under Mississippi SB 3101 (Miss. Code §27-7-17), for property placed in service after December 31, 2022, Mississippi taxpayers can elect to deduct 100% of expenditures for qualified property and qualified improvement property (as defined in §168(k) and §168(e)(6) as they existed on January 1, 2021). Combined with federal 100% bonus depreciation restored by OBBBA, this delivers full Year 1 stacking at both federal and Mississippi state levels, Mississippi was the second state to make full expensing permanent.
How does Mississippi’s flat income tax interact with a cost segregation study?
Mississippi has a flat 4% individual income tax (reduced from 4.7% for 2026 via HB 531) and a graduated corporate income tax (4% on the first $10K, 5% above). Because Mississippi allows an elective 100% bonus depreciation at the state level, Year 1 federal AND state benefits both apply, one of the more favorable state tax profiles for cost segregation. Mississippi is on a legislative path toward eliminating individual income tax entirely by 2036.
What Mississippi commercial property types benefit most from cost segregation?
Gulf Coast casino and hospitality property (Beau Rivage, Hard Rock, IP), Nissan and Toyota auto manufacturing plants and Tier 1/Tier 2 supplier facilities, Ingalls Shipbuilding defense operations, poultry and catfish processing, and Jackson-metro multifamily. Casino/gaming, auto manufacturing, and defense shipbuilding typically deliver the strongest results due to heavy FF&E and specialty equipment content.
Can I do a cost segregation study on a Mississippi property I’ve owned for years?
Yes, A 481(a) adjustment via an automatic accounting-method change (Form 3115 under Rev. Proc. 2015-13 and its updates) lets you capture all missed depreciation from prior years into the current tax year without amending past returns. Especially valuable for long-held Mississippi casino, manufacturing, and industrial properties. For property placed in service before 2023, the Mississippi §168(k) election does not apply retroactively, per SB 3101’s effective date.
How do you do a cost segregation study on a Mississippi property when you’re based in Texas?
Cost segregation is governed by federal tax law, so the methodology is identical regardless of state. Our engineer works either through an in-person Mississippi site visit or, for well-documented properties, a virtual site inspection using high-definition video, construction documents, and interactive tools. Both are IRS-compliant. Mississippi’s proximity to our Texas headquarters makes on-site visits particularly efficient.
What construction era of Mississippi property produces the strongest cost segregation outcomes?
Properties placed in service since 1987 are eligible under current IRS guidance, and studies limited to the last 7–10 years tend to deliver the strongest ROI. For maximizing the Mississippi state benefit specifically, property placed in service after December 31, 2022 (when SB 3101 took effect) captures both federal and Mississippi 100% bonus depreciation. Mississippi’s auto manufacturing expansions, Gulf Coast casino reinvestment, and multifamily buildout have produced substantial newer commercial property in the ideal window.
Does Mississippi’s property tax rate affect the cost seg decision?
Not directly. Cost segregation reduces income tax through accelerated depreciation, not property tax. Mississippi’s effective property tax rate is around 0.75% (Tax Foundation), moderate and separate from the income-tax lever cost segregation operates on.
What documentation do you need for a Mississippi cost segregation study?
Purchase or construction cost documentation, a current depreciation schedule from your CPA, construction plans or specs (when available), any prior appraisals, and, for renovation studies, improvement records. To make the SB 3101 election, your CPA will need the detailed asset schedule, which we provide as part of the standard deliverable.
Can you handle Mississippi multi-property portfolios?
Yes, We regularly run cost segregation studies across multi-state and Mississippi-only portfolios. Common for Gulf Coast casino operators with multiple properties, auto manufacturers with multiple facilities (Nissan Canton, Toyota Blue Springs, plus suppliers), poultry processing operators, and multifamily portfolio owners.
How long does a cost segregation study take on a Mississippi property?
From engagement to CPA-ready report, most studies run 4–8 weeks depending on property complexity, document availability, and site-visit scheduling. Complex casino, shipbuilding, or auto manufacturing facilities can take longer proportional to the FF&E and specialty-equipment cataloging effort.
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Talk to Trusted Cost Segregation Consultants
We live by our motto: “Everything we do is driven by the relationship, not the transaction”, and we mean it. Whether you have a Mississippi property to evaluate or a multi-state portfolio to review, we’re here to help. Contact our real estate firm.