Key Takeaways
- Original asset cost before adjustments.
- Includes purchase price plus acquisition expenses.
- Starting point for tax gain/loss calculations.
- Differs from adjusted basis with modifications.
What is Unadjusted Basis?
The unadjusted basis is the original cost of acquiring an asset, serving as the baseline for tax calculations like capital gain, depreciation, and deductions. It represents the total amount you paid to purchase the asset before any modifications or adjustments.
This concept, also called the "cost basis," includes purchase price plus related acquisition expenses and is essential for accurate tax reporting and investment tracking, especially when dealing with assets and cost considerations.
Key Characteristics
The unadjusted basis has several core features that define its role in financial and tax accounting:
- Initial Investment: It includes the purchase price and all necessary expenses to acquire and prepare the asset for use, such as taxes and installation fees.
- Fixed Starting Point: Used as the baseline for calculating depreciation, amortization, and capital gain or loss.
- Excludes Adjustments: Does not account for improvements, damage, or depreciation; those are factored into the adjusted basis.
- Applicable to Various Assets: Relevant for real estate, machinery, stocks, and other investments.
- Tax Reporting: Critical for compliance with IRS rules and accurately calculating deductions like the Qualified Business Income Deduction (QBID).
How It Works
The unadjusted basis starts with the total acquisition cost, including purchase price, sales taxes, freight, and installation fees. This figure remains unchanged unless you acquire new assets or make additional purchases.
When you sell or dispose of the asset, subtract the unadjusted basis from the sale proceeds to determine your taxable capital gain or loss. This value also serves as the foundation for calculating depreciation deductions over the asset’s useful life.
Examples and Use Cases
Understanding unadjusted basis is crucial across various scenarios involving property and investments:
- Airlines: Companies like Delta factor in unadjusted basis when depreciating aircraft or equipment for tax purposes.
- Real Estate: Purchasing a home for $500,000 establishes that amount as the unadjusted basis before accounting for improvements or depreciation.
- Stocks and Securities: Brokerages provide cost basis information at purchase, which corresponds to the unadjusted basis for capital gain calculations.
- Business Equipment: A machine bought for $38,000 plus $2,000 in taxes and fees results in an unadjusted basis of $40,000, guiding future depreciation deductions.
Important Considerations
Accurately determining your unadjusted basis is vital for tax accuracy and investment tracking. Remember that it differs from the adjusted basis, which reflects subsequent changes like improvements or depreciation.
Additionally, certain tax provisions, such as those involving the Qualified Business Income Deduction, rely on the unadjusted basis immediately after acquisition to calculate eligible deductions. Always maintain thorough documentation of acquisition costs to support your basis calculations.
Final Words
The unadjusted basis is your foundational figure for calculating gains, losses, and depreciation, making accurate tracking essential. Review your acquisition costs carefully to ensure your basis reflects all eligible expenses before proceeding with tax calculations.
Frequently Asked Questions
Unadjusted basis is the original cost of acquiring an asset, including the purchase price and related acquisition costs, before any adjustments like depreciation or improvements. It serves as the starting point for tax calculations such as gains, losses, and deductions.
Unadjusted basis includes all expenses necessary to acquire and prepare the asset for use, such as the purchase price, sales tax, shipping, installation fees, and sometimes legal or accounting costs. For example, buying a machine for $38,000 with additional fees totaling $2,000 results in an unadjusted basis of $40,000.
Unadjusted basis is the initial purchase cost of an asset, while adjusted basis accounts for changes over time, like improvements added or depreciation taken. Adjusted basis reflects the asset's current tax value, whereas unadjusted basis remains the fixed starting point.
Unadjusted basis is crucial because it is used to calculate taxable gains or losses when you sell an asset, determine depreciation amounts, and establish limits for deductions like the Qualified Business Income Deduction (QBID). It ensures accurate tax reporting by providing a clear starting value.
For inherited property, the unadjusted basis is generally the fair market value of the asset at the time of inheritance, which may be equal to or slightly higher than that value. This differs from purchased property, where the basis is the acquisition cost.
Yes, for stocks and securities, the unadjusted basis is typically the purchase price plus any related fees, and brokers usually provide this cost basis information at the time of purchase.
Since the 2017 Tax Cuts and Jobs Act, when trading in an asset, it's treated as sold at fair market value. This means the new asset's unadjusted basis is its purchase price, ignoring the trade-in value, which can affect depreciation and gain calculations.
Yes, some states like Alabama define unadjusted basis differently; for example, properties purchased after 1933 use original cost, while those acquired before use fair market value as of 1933. It's important to consider state-specific rules when calculating basis.

