Estimate how much tax you might owe if you sell an investment or property for a gain.
Who this is for
People selling an investment or property and trying to estimate tax before they sell.
What to type in
Your purchase price, sale price, improvements, selling costs, holding period, and tax bracket.
Start with the assumptions, then use the interpretation below to compare tradeoffs without bouncing between sections.
Start with what you paid and what you plan to sell for, then add any costs that change the taxable gain.
Use these inputs as a quick setup row. The answer and visual breakdown sit below so you do not lose context.
Costs that increase basis (renovations, upgrades).
Commissions, closing fees, and similar costs.
Over 12 months qualifies as long-term.
Marginal federal rate applied to short-term gains.
After-tax sale
The sale creates $104,000.00 of gain and about $15,600.00 of estimated tax.
$225,000.00 is your adjusted basis after improvements, while $329,000.00 is what the sale brings in after selling costs.
A holding period of 36 months changes whether the gain is treated as short term or long term.
This is directionally useful for planning, but capital gains rules have more edge cases than this simple model captures.
Before selling, compare the after-tax proceeds with the reason you want the cash now.
If the tax hit feels too large, timing and holding period are usually the first levers to review.
Results
Relative comparison of your main outputs
Cost basis
$225.0K
Net proceeds
$329.0K
Capital gain
$104.0K
Estimated tax
$15.6K
Net after tax
$313.4K
Cost basis
$225.0K
Net proceeds
$329.0K
Capital gain
$104.0K
Estimated tax
$15.6K
Net after tax
$313.4K
Use this if you want to understand how the calculator works, not just plug in numbers.
Step 1
Enter your purchase price and any capital improvements.
Step 2
Enter your sale price and selling costs.
Step 3
Set holding period and tax bracket to see estimated tax and net after-tax proceeds.
These cover the assumptions, tradeoffs, and edge cases behind the calculator.
Use the calculator for the math, then use these guides to make the decision with more confidence.
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