Decoupled from §168(k)
Manufacturer Exception for Post-2018 Property
6.5% Top Individual · 8.25% Flat Corporate + Local Piggyback Up to 3.3%
Federal Deduction Amplified
22–35% Typical Reclassification
Maryland Building Value into Short-Life Assets
All Commercial Asset Classes
Statewide Maryland
The Basics
What Cost Segregation Does for Maryland 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 federal taxable income.
In Maryland, the federal benefit works the same way it does anywhere, 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, and that federal benefit applies to Maryland properties in full. State-level treatment is where Maryland is different: Maryland has legislatively decoupled from federal §168(k) bonus depreciation (Md. Tax-Gen. Code §10-210.1). An exception applies for qualified manufacturing entities, which can claim federal §168(k) bonus depreciation against Maryland taxable income for qualified property placed in service after January 1, 2019 (under the More Jobs for Marylanders Act). For non-manufacturers, federal bonus depreciation must be added back on the Maryland return; property depreciates via regular MACRS on the state return.
Federal Deduction Amplified by MD’s High Marginal Rates
Maryland’s Tax Landscape: Why Cost Segregation Matters Here
Individual Income Tax
Graduated with a top marginal rate of 6.5% on income over $1M ($1.2M joint), increased from 5.75% under the Budget Reconciliation and Financing Act (BRFA) of 2025. A new 6.25% bracket applies to income $500,001–$1,000,000 ($600,001–$1,200,000 joint). Under BRFA 2025, a 2% surcharge on long-term capital gains applies to individuals with federal AGI over $350,000.
Local County Piggyback Tax
All 23 Maryland counties plus Baltimore City levy additional local income taxes at rates up to 3.3%, stacked on top of the state rate. This makes Maryland’s combined state + local individual rate among the highest in the country for high earners.
Corporate Income Tax
8.25% flat, one of the higher corporate rates in the country. Maryland includes GILTI (now NCTI under OBBBA) in the corporate tax base, which is unusual.
Bonus Depreciation Conformity
Decoupled from federal §168(k) (Md. Tax-Gen. Code §10-210.1). Exception: qualified manufacturing entities can claim §168(k) for property placed in service after January 1, 2019 (More Jobs for Marylanders Act).
§179 Expensing
Maryland caps §179 at $25,000, significantly below the federal $2.56M cap for 2026. Federal §179 amounts above the Maryland cap require an addback and subsequent-year recovery on the Maryland return.
PTE (Pass-Through Entity) Tax
Maryland offers a PTE tax election for federal SALT-cap workaround purposes.
Property Tax
~0.92% effective on owner-occupied housing (Tax Foundation 2026), moderate. A separate lever from income tax.
§481(a) Catch-Up
For Maryland 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 at the federal level, no amended returns required.
Every Commercial Asset Class in Maryland
Maryland Property Types Where Cost Segregation Delivers
Federal contracting & defense
Baltimore–Washington corridor federal contractor operations (Lockheed Martin, Northrop Grumman, Leidos, Booz Allen). Specialty office and R&D facilities.
Biotech & life sciences
Johns Hopkins medical corridor, University of Maryland biotech, and NIH-adjacent operations in Bethesda/Rockville. Highly specialized lab and research facility content.
Port & logistics
Port of Baltimore (Sparrows Point, Dundalk Marine Terminal, and Fairfield Marine Terminal), one of the largest East Coast ports. Warehouse and distribution property along I-95 corridor.
Manufacturing (qualified manufacturers)
Under Maryland’s More Jobs for Marylanders Act, qualified manufacturers get a §168(k) carve-out, creating a specific tax-planning opportunity. Manufacturing operations along the I-95 corridor and in the More Jobs for Marylanders zones.
Healthcare & medical office
Johns Hopkins, University of Maryland Medical System, MedStar Health corridors across Baltimore metro and Washington-adjacent counties.
Hospitality & tourism
Annapolis, Ocean City, Eastern Shore destination hospitality, plus Baltimore Inner Harbor.
Multifamily
Baltimore metro, Washington-suburban counties (Montgomery, Prince George’s, Howard, Anne Arundel), Frederick, and Annapolis multifamily development.
Retail & mixed-use
Statewide retail centers and mixed-use developments, particularly in Baltimore–Washington corridor counties.
Investment residential
5+ unit properties eligible for cost segregation.
Not sure whether your Maryland property qualifies? Request a free benefit analysis, we’ll tell you honestly. Manufacturers should especially explore the §168(k) carve-out.
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).
30+ years of nationwide experience
Headquartered in Texas, serving Maryland and all 50 states.
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 file the Maryland addback modification (Form 500DM) and manage the $25K §179 cap adjustment. Manufacturers get separate documentation of the §168(k) carve-out.
Single-property to multi-state portfolios
Whether you own one Maryland commercial building or a portfolio spanning multiple states, we scale the engagement to fit.
Real Numbers
What First-Year Savings Might Look Like in Maryland
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 Maryland specifically, the federal Year 1 savings apply fully; the Maryland state benefit is spread across the useful life of the reclassified components under regular MACRS for non-manufacturers (no state-level bonus stacking). Qualified Maryland manufacturers can claim full §168(k) bonus at the state level too. Given Maryland’s 6.5% top state rate plus local piggyback taxes up to 3.3% and 8.25% corporate rate, the combined federal + state benefit is substantial even without state bonus stacking.
Get Started
Free Maryland Cost Segregation Benefit Analysis
Tell us about your Maryland 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 benefit modeled + Maryland state-timing considerations + manufacturer §168(k) carve-out where applicable
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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 Maryland and all 50 states).
Request Your Free Analysis
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How It Works, Maryland & Nationwide
Our Cost Segregation Process
What Clients Say
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Cost Segregation in Maryland
Frequently Asked Questions
Does Maryland conform to federal bonus depreciation rules?
No, with one important exception. Maryland has decoupled from federal §168(k) bonus depreciation (Md. Tax-Gen. Code §10-210.1). Federal bonus depreciation is added back on the Maryland return via Form 500DM. However, qualified manufacturing entities under the More Jobs for Marylanders Act can claim federal §168(k) bonus depreciation for qualified property placed in service after January 1, 2019. Your federal Year 1 tax savings from a cost segregation study are fully preserved regardless of manufacturer status.
What is Maryland’s §179 cap?
Maryland caps §179 at $25,000, significantly below the federal $2.56M cap for 2026. Federal §179 amounts above $25,000 require an addback and subsequent-year recovery on the Maryland return. This is one of the lowest §179 caps in the country and affects most Maryland business filers.
How does Maryland’s income tax structure interact with a cost segregation study?
Maryland has a graduated individual income tax with a top rate of 6.5% (income over $1M/$1.2M joint), plus a 2% capital gains surcharge for individuals with federal AGI over $350,000. All Maryland counties plus Baltimore City levy additional local income tax up to 3.3%, stacked on top of the state rate. Corporate income tax is 8.25% flat. Because Maryland decouples from bonus depreciation for non-manufacturers, the federal Year 1 benefit is where most of the study’s economics live.
What Maryland commercial property types benefit most from cost segregation?
Baltimore–Washington corridor federal contracting and defense operations, Johns Hopkins and University of Maryland biotech and healthcare facilities, Port of Baltimore logistics, qualified Maryland manufacturers (with the §168(k) carve-out), and multifamily across Baltimore–Washington corridor counties. Specialty biotech, defense, and manufacturing property typically produces the strongest results.
Can I do a cost segregation study on a Maryland 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 Maryland federal-contracting facilities, biotech properties, and multifamily.
How do you do a cost segregation study on a Maryland 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 Maryland site visit or, for well-documented properties, a virtual site inspection using high-definition video, construction documents, and interactive tools. Both are IRS-compliant.
What construction era of Maryland 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. Maryland’s biotech expansion, federal-contracting-adjacent office buildout, and Baltimore–Washington corridor multifamily development have produced substantial newer commercial property in the ideal window.
Does Maryland’s high combined state + local tax rate affect the cost seg decision?
Yes, favorably. Higher combined marginal rates mean each dollar of federal depreciation deduction generates more actual tax savings. Maryland’s 6.5% top state rate + up to 3.3% local piggyback tax means the federal deduction delivers stronger effective value for high-income Maryland taxpayers than in states with lower rates.
What documentation do you need for a Maryland 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. Because Maryland decouples from bonus depreciation (with the manufacturer exception) and caps §179 low, your CPA will need the detailed asset schedule to file Form 500DM. We provide it as part of the standard deliverable.
Can you handle Maryland multi-property portfolios? How long does a study take?
Yes, we regularly run cost segregation studies across multi-state and Maryland-only portfolios. Common for Baltimore–Washington corridor office portfolios, biotech operators with multiple facilities, Port-of-Baltimore-adjacent logistics operators, and multifamily portfolio owners. Typical study timeline is 4–8 weeks per property; complex biotech and defense facilities take longer proportional to the 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 Maryland property to evaluate or a multi-state portfolio to review, we’re here to help. Contact our real estate firm.