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How To Calculate Capital Gains Tax On Property

Written by The Realized Team | Feb 3, 2026

For investment property owners, understanding how to calculate capital gains tax is crucial for maximizing profits when selling real estate. Capital gains tax is levied on the profit derived from the sale of property or an investment. Often, this concept is discussed in hushed tones resembling a complex Wall Street strategy, but it doesn’t need to be overly complicated.

Understanding the Basics

Capital gains are classified as either short-term (for assets held less than a year) or long-term (for assets held longer than a year). The distinction is significant because short-term gains are taxed as ordinary income, while long-term gains are subjected to more favorable tax rates of 0%, 15%, or 20%, depending on your income bracket.

The calculation starts by determining the adjusted basis of your property, which includes the purchase price plus any acquisition costs, like legal fees and commissions, and improvements made to the property, minus any depreciation claimed. Here's a step-by-step guide to navigate through this financial landscape.

Calculating Your Adjusted Basis

  1. Start with your Purchase Price: The initial purchase price is the foundation of your cost basis.
  2. Add Acquisition Costs: These are typically one-time costs such as closing costs, appraisal fees, and attorney fees.
  3. Add Improvements: Include significant renovations or additions that add value to the property.
  4. Subtract Depreciation: Over the years, you might have claimed depreciation on your tax returns. This must be subtracted from your adjusted basis as it was a tax deduction you benefited from while owning the property.

Example: If a property was purchased at $200,000, had $20,000 in improvement costs, and a total of $30,000 in depreciation was claimed, the adjusted basis would be $190,000 ($200,000 purchase price + $20,000 improvements - $30,000 depreciation).

Determining Your Capital Gain

Once the adjusted basis is calculated, subtract this from the property's selling price to determine your capital gain.

Example: If you sold the property for $300,000, your capital gain would be $110,000 ($300,000 sale price - $190,000 adjusted basis).

Understand Depreciation Recapture

Here's where it gets a bit nuanced. Depreciation recapture can significantly affect your tax liabilities. The IRS recaptures the benefit you received from depreciation deductions at a rate of 25%. This means that part of your gain, up to the amount of depreciation taken, will be taxed at this higher rate, rather than the capital gains rate.

Long-term Planning and Strategies

Investors often defer capital gains taxes using strategies like the 1031 Exchange, which allows you to reinvest the proceeds from the sale of your property in a similar kind of property to defer payment of capital gains taxes. This technique is akin to sophisticated financial alchemy, transforming your immediate tax liabilities into future potential growth without immediate extraction by the taxman.

Remember, while the arithmetic behind capital gains tax is foundational to sound financial planning, the specifics can quickly become complex. Engaging with a tax professional ensures you're navigating these waters safely and maximizing your investment’s potential, keeping more of your gains in your portfolio—the ultimate objective of any savvy investor.