Tax-Loss Harvesting Calculator
Calculate the potential tax savings of selling losing investments to offset gains. Reduce your tax bill by harvesting losses strategically.
📅 Tax Year:
Calculate Savings
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Loss amount you plan to realize
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How It Works
Tax-loss harvesting involves selling securities at a loss to offset capital gains tax liability.
Order of Operations
- Losses first offset gains of the same type (short-term vs short-term).
- Remaining losses offset gains of the other type.
- If losses exceed all gains, up to $3,000 ($1,500 MFS) can be deducted against ordinary income (wages).
- Any remaining loss is carried forward to future years.
Use Cases
- Estimate tax savings from realizing losses in a down market to offset short- and long-term gains.
- Plan year-end portfolio rebalancing while maximizing the tax benefit of unrealized losses.
- Determine how much loss you can deduct against ordinary income (up to $3,000 per year).
- Calculate loss carryforward amounts that can be applied to future tax years.
- Compare harvesting scenarios to decide which losing positions to sell first.
Assumptions & Limitations
- Losses offset same-type gains first (short-term vs. short-term), then cross-type gains.
- Excess losses above all gains can offset up to $3,000 of ordinary income ($1,500 if Married Filing Separately).
- Remaining losses carry forward indefinitely to future tax years.
- The wash sale rule (buying substantially identical securities within 30 days) is not checked here.
- State and local taxes are not included in the savings estimate.
- This tool provides estimates for educational purposes only and does not constitute tax advice. Consult a qualified tax professional for your specific situation.
Sources & References
- IRS Topic No. 409 - Capital Gains and Losses
- IRS Publication 550 - Investment Income and Expenses
- IRC Section 1091 - Loss from Wash Sales of Stock or Securities
- IRS Schedule D Instructions - Capital Gains and Losses
- IRS Form 8949 Instructions - Sales and Dispositions of Capital Assets
Tax laws change frequently. Always verify current rates and thresholds on IRS.gov before making financial decisions.