Understanding tax basis is important for anyone navigating property ownership—whether you’re an individual homeowner or a business owner. This concept plays a key role in determining how much tax you owe when selling, exchanging, or transferring property.
By taking the time to understand this tax term, you can make more informed decisions and potentially save money when dealing with property transactions.
What Is Tax Basis?

The IRS defines tax basis as the amount of your capital investment in a property for tax purposes. Think of it as the original value of your property according to the tax code. Tax basis influences many calculations including depreciation, amortization, depletion, casualty losses, and any gains or losses from the sale or transfer of property.
In simpler terms, your property’s tax basis establishes the starting point for determining how much profit or loss you’ll report when disposing of the property, as well as other tax-related aspects of owning it.
There isn’t just one type of tax basis, though—different situations determine different types. These include cost basis, adjusted basis, and basis other than cost. Each variation serves a specific purpose depending on how property was acquired, how it’s been used, and any changes it might have undergone during your ownership.
Types of Basis
Cost Basis
Cost basis is the most straightforward form of basis. It usually begins with the original purchase price of a property. But it’s not limited to just the sticker price. Cost basis also includes related expenses such as sales tax, freight charges, legal fees, installation costs, and testing fees. For instance, if you’re purchasing business assets, you’ll need to allocate the purchase price to individual assets to establish their basis appropriately.
Documenting these expenses is critical. Every allowable cost can potentially increase your property’s basis, which in turn reduces the taxable gain when the property is sold. Retaining accurate records of major transactions can help you account for all costs properly.
For example, if you purchased a piece of equipment for your business and incurred shipping and installation fees, these extra costs would add to the equipment’s cost basis. When you sell the equipment later, a higher basis can lead to a lower taxable gain.
Adjusted Basis
Adjusted basis comes into play when the value of a property changes after acquisition. These adjustments can increase or decrease the original basis depending on the circumstances.
One common scenario for adjusting basis is when capital improvements are made to a property. These are changes that add value and extend the useful life of the property, such as building an addition to your home, replacing the roof, or upgrading your HVAC system. The cost of these improvements is added to the original basis, creating an adjusted basis.
Adjusted basis isn’t all about increasing the value of your property, though—there are situations where it decreases the basis as well. Losses incurred due to theft or natural disasters, depreciation on your business property, and other allowable deductions can reduce the adjusted basis. This adjusted basis becomes the foundation for calculating any gain or loss when you ultimately dispose of the property.
When it comes to your home, adjusted basis can be a valuable tool for minimizing capital gains taxes upon sale. If you’ve made significant improvements that have a useful life of more than one year, you can use the adjusted basis to offset potential gains. It’s good practice to retain all receipts, invoices, and any relevant documentation for improvements in a dedicated folder. When selling your home, these records can prove invaluable.
Basis Other Than Cost
Not all property is acquired through direct purchases—gifts, inheritances, and property received for services often complicate the calculation of basis. In these cases, establishing the proper basis isn’t as straightforward as simply looking at the purchase price.
For instance:
- Inherited Property: The basis is generally the fair market value (FMV) of the property at the time of the original owner’s death.
- Gifted Property: Basis depends on the FMV at the time of the gift or the donor’s original basis, depending on the circumstances.
- Property Received For Services: Basis is often the FMV as compensation.
Moreover, certain complex transactions—such as like-kind exchanges, involuntary conversions, or property transfers between spouses—can come with special basis rules. Calculating the correct basis in these instances may require additional diligence or professional guidance to ensure accuracy.
Why Understanding Basis Matters

Understanding the different types of basis matters because it directly impacts your tax liability when you dispose of property. By leveraging basis correctly, you can reduce your taxable gain and, in some cases, minimize the taxes you owe. Whether you’re a homeowner upgrading your property or a business owner managing assets, comprehensively documenting expenses and adjustments tied to your property’s basis can work to your advantage over time.
Basis also affects deductions related to depreciation and casualty losses, making it an essential consideration for business owners who rely on their assets’ value for tax planning. However, because basis can become complex depending on the scenario, it’s always wise to consult professionals for an expert review of your situation.
Consult With Our Tax Professionals At Minton CPA & Associates
Navigating the rules of tax basis can be a challenge, but understanding this concept is crucial for both individuals and business owners seeking to make smarter financial decisions. At Minton CPA & Associates, we take the guesswork out of tax considerations like basis calculation—helping you account for all allowable costs, adjustments, and special scenarios to ensure accuracy and maximize savings.
Whether you’re preparing for a property sale, inheritance, or other transactions involving tax basis, our team is here to guide you through it every step of the way. Contact us today at 757-546-2870 to schedule a consultation and learn more about how our tax planning and preparation services can benefit you.
