Capital Gains Tax Calculator: Estimate Your Capital Gains Taxes Before They Catch You Off Guard

Use our Capital Gains Tax Calculator to project your tax liability from selling real estate, stocks, crypto, or business assets in 2025. This tool helps you understand how your holding period, income, and asset type affect what you owe.
How it works



Enter Your Sale Details
Input the sale amount, cost basis, holding period, and asset type (real estate, equity, crypto, etc.).

Tell Us Your Filing Status & Income
We’ll apply the proper capital gains rate based on 2025 IRS brackets and your income level.



Review Your Short- and Long-Term Tax Breakdown
We’ll show you what portion of your gain is taxed at higher rates—and where you might save through strategic timing or reinvestment.
Why Use This Calculator?
Frequently Asked Questions
Does this work for real estate sales?
Yes. You can input capital improvements and depreciation if applicable. It works for personal property, investment property, and flips.
Will this tool tell me if I qualify for a 1031 exchange?
It won’t calculate it directly, but it will show you the taxable gain that could be deferred through a 1031. For full guidance, we recommend booking a call.
Can I use this for stocks or crypto too?
Yes. It supports capital assets across all categories—stocks, equity sales, crypto, and collectibles.
Does this include state taxes?
No. This tool provides a federal estimate. State capital gains vary and should be discussed with your strategist.
Selling an Asset? Plan the Exit. Protect the Profit.
Whether you’re selling stock, real estate, or a business—don’t wait until April to find out what it’ll cost. Let’s build a custom exit strategy that works.
© 2025 Uncle Kam. All right reserved
Professional, licensed, and vetted tax advisors who will save you money.