Capital Gains Tax Calculator
Project capital gains tax liabilities on security assets (stocks, Bitcoin) or real estate investments. Factors in long-term preferential schedules, Net Investment Income Tax (NIIT), and income level shifts.
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Includes ordinary job salary, interest, and business wages.
Capital Gains Summary
| Total Capital Gain (Profits) | $0.00 |
| Asset Cost Basis | $0.00 |
| Asset Selling Proceeds | $0.00 |
| Applied Tax Treatment | Long-Term (15.0%) |
| Net Investment Income Tax (NIIT 3.8%) | +$0.00 |
| Effective Capital Gains Surtax | 15.00% |
| Net Keepable proceeds (After Tax) | $0.00 |
Profits vs Tax Breakdown
How Capital Gains Taxes are Calculated
The calculation matches standard IRS capital schedules depending on asset holding type (Long-Term or Short-Term) and filer baseline earnings:
- Short-Term Gains: If held for ≤ 1 year, the gain represents standard taxable compensation and progressive marginal thresholds (10% to 37%) apply directly to your capital earnings.
- Long-Term Gains: If held for > 1 year, cheaper investment caps apply:
- 0% rate applies if your total combined taxable earnings fall underneath lower bounds.
- 15% rate represents the standard median investment bracket.
- 20% rate applies on high wealth tiers.
- Net Investment Income Tax (NIIT): An additional federal 3.8% tax applies to the capital gain if Modified AGI exceeds $200k (Single) or $250k (Married joint).
Professional Advice Disclaimer: Capital gains rules include complex adjustments for real estate exclusions (IRS Section 121 exclusions up to $250k single / $500k joint), wash sales, and depreciation recapture. Please consult with a designated CPA or personal investment fiduciary for precise filings.