7 Cost Segregation & Tax Consulting Firms Texas Investors Should Know in 2026

Real estate investors leave money on the table every year by depreciating a building on a straight 27.5- or 39-year schedule when parts of it legally qualify for a 5-, 7-, or 15-year schedule. A cost segregation study fixes that by breaking a property down into its components and reclassifying those that depreciate faster. The catch is finding a firm that actually understands your property type, your state's tax setup, and how to back the study up if the IRS asks questions.

Here are seven firms and financial service providers worth knowing if you're weighing a cost segregation study, a broader tax consulting engagement, or a related financial move for your property portfolio.

Best for Texas-Focused Engineering Studies - Texas Cost Seg

Texas Cost Seg runs engineering-based cost segregation studies specifically for Texas real estate owners, from short-term rentals and multifamily buildings to retail, office, and industrial properties. The firm's engineers review a property component by component to determine which qualify for accelerated 5-, 7-, and 15-year depreciation rather than the standard decades-long schedule.

Because Texas has no state income tax, the accelerated and bonus depreciation this firm identifies flows through as full federal benefit without a state tax offset eating into it, which isn't the case in every state. That's a meaningful distinction for an investor comparing Texas properties against holdings elsewhere.

The firm also handles look-back studies using Form 3115, which allows an owner to claim missed depreciation from prior years without amending prior tax returns. A free feasibility analysis is available up front, so an owner can see whether a study is worth commissioning before paying for one. Reports are built to withstand IRS scrutiny, which matters most if a return is ever flagged for review. Investors with rental or commercial property concentrated in Houston, Dallas-Fort Worth, Austin, or San Antonio get a firm built around exactly those markets.

Best for Big-Ticket National Tax Strategy - KBKG

KBKG works at a different scale than a regional cost seg shop. The firm reports having claimed over $11 billion in tax benefits for clients, with a track record it puts at 25 years and a bench that includes former Big 4 leaders. It runs brick-and-mortar offices in Los Angeles, New York, Atlanta, Chicago, Dallas, and Houston, so Texas investors do have local access points in Dallas and Houston.

KBKG also covers research and development credits and other federal incentive programs, using what it describes as proprietary technology to help identify eligible costs. That breadth is the appeal for a CPA firm or a larger ownership group juggling multiple tax strategies at once, though it also means cost segregation is one line of business among several rather than the singular focus. Thousands of CPAs reportedly work with the firm, which suggests a practice built as much on referral relationships as on direct client work.

Best for Multi-Credit Tax Consulting - Source Advisors

Source Advisors is a tax consultancy that runs cost segregation alongside R&D tax credits, LIFO accounting, energy efficiency tax credits, and sales and use tax credits. That range suits a business or property owner who wants a single firm to handle several credit categories rather than coordinating multiple specialists.

The trade-off of that breadth is that cost segregation sits as one of five service lines rather than the firm's sole focus. An owner whose only need is a straightforward cost seg study on a single property might find a specialist a tighter fit, while someone managing a more complex tax position across several credit types gets more value from having it all under one roof.

Best for Combined Accounting and Advisory - Haynie & Company

Haynie & Company is a certified public accounting and management consulting firm, offering services that span tax accounting, audit and assurance, business valuation, mergers and acquisitions consulting, and financial statement preparation.

That makes it a fit for a property owner or business that wants an ongoing accounting relationship, someone to prepare financial statements, handle an audit, or advise on a business sale, rather than a one-off engineering study. Anyone who needs a full-service CPA relationship year-round rather than a single specialized report gets more from a firm built around that scope, though a narrower cost seg specialist will typically go deeper on that one service alone.

Best for International Money Transfers - Western Union

Western Union doesn't do tax consulting or cost segregation. It's a money transfer service that lets people send and receive funds internationally, check exchange rates, and track transfers online. For a real estate investor with cross-border partners, contractors, or family members who need funds moved quickly, it's a recognizable, widely available option, though it plays no role in depreciation or tax planning for property ownership.

Best for Property Tax Appeals - O'Connor

O'Connor focuses on property tax reduction and appeals, which is a different discipline than cost segregation even though both affect an owner's tax bill. Where a cost seg study reclassifies building components for depreciation purposes, O'Connor works the other side of the ledger, challenging a property's assessed value to lower the tax owed on it. An owner who feels their property is over-assessed is the right audience here, separate from anyone specifically looking to accelerate depreciation.

Best for Personal Banking Relationships - Best Financial Credit Union

Best Financial Credit Union centers its work on the financial well-being of its members rather than commercial tax strategy. It's a good fit if you want a credit union relationship for everyday banking and savings, but it isn't a resource for cost segregation studies or business tax consulting. If you're working on your overall financial picture, you may also want to consider ways debt solutions can improve your financial health, particularly if managing existing debt is part of your broader financial strategy. That makes this kind of member-focused institution a better complement to your personal finances than a specialized depreciation study would be.

Which One Is Right for You

The right pick depends on what you actually own and what you're trying to solve. A CPA firm managing a client's entire tax and business picture will lean toward a full-service shop like Haynie & Company. An owner juggling R&D credits, energy incentives, and cost segregation at once benefits from a multi-credit consultancy like Source Advisors. A large operation with properties spread across several states, or one that wants a national brand name with a long track record, has good reason to look at KBKG. Someone dealing with an inflated property tax assessment needs O'Connor's specific service, and not a depreciation study at all. And any cross-border payment or everyday banking need sits entirely outside cost segregation, which is where Western Union and Best Financial Credit Union come in.

For an investor whose properties are specifically in Texas, the calculation is simpler. Texas has no state income tax, so every dollar of accelerated or bonus depreciation an engineering study identifies flows through as full federal benefit, a detail worth understanding before comparing any tax strategy across states and one covered well in general terms by the Congressional Research Service's overview of federal depreciation rules. Between a firm built specifically around that Texas dynamic and firms that treat cost segregation as one offering among many, Texas Cost Seg is the standout for anyone whose portfolio is Houston, Dallas-Fort Worth, Austin, or San Antonio real estate and who wants a free feasibility check before committing to a full study. If your priority is a Texas-specific engineering study backed by audit-ready documentation, that's the one to call first.