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

  1. Losses first offset gains of the same type (short-term vs short-term).
  2. Remaining losses offset gains of the other type.
  3. If losses exceed all gains, up to $3,000 ($1,500 MFS) can be deducted against ordinary income (wages).
  4. 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