Tax-Loss Harvesting
What is tax-loss harvesting?
Tax-loss harvesting is the practice of selling investments that have declined in value to realize a capital loss, and using that loss to offset capital gains from profitable investments. The goal is to reduce current tax liability while preserving the portfolio’s overall risk/return profile.
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Key points
- Realized capital losses offset realized capital gains. Reducing gains lowers the tax owed.
- Short-term losses first offset short-term gains; long-term losses first offset long-term gains. Net losses of either type can then offset the other.
- If net capital losses exceed capital gains, an individual can deduct up to $3,000 per year ($1,500 if married filing separately) against ordinary income. Excess losses can be carried forward to future years.
- Avoid buying a “substantially identical” security within 30 days before or after the loss sale (wash-sale rule), or the loss is disallowed for tax purposes.
How it works
- Identify investments with unrealized losses.
- Sell those positions to realize capital losses.
- Use losses to offset realized gains realized during the year (or up to $3,000 against ordinary income).
- Re-establish equivalent market exposure by buying a similar—but not substantially identical—security to maintain asset allocation and intended risk exposure.
Most investors perform harvesting near year‑end, after reviewing realized gains and losses for the year.
The wash-sale rule
The wash-sale rule disallows a loss deduction if you buy the same or a substantially identical security within 30 days before or after the loss sale (a 61‑day window including the sale date). Common workarounds:
* Buy a different ETF or mutual fund that tracks the same index but is issued by a different provider.
* Wait 31 days to repurchase the original security.
Note: “Substantially identical” is not rigidly defined in all cases; when in doubt, consult a tax professional.
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Example
Assume an investor has these realized gains and available losses:
* Realized gains: long‑term gain $200,000 (taxed at 20%), short‑term gain $150,000 (taxed at 37%).
* Available losses to harvest: long‑term loss $130,000, short‑term loss $100,000.
Without harvesting:
* Tax = ($200,000 × 20%) + ($150,000 × 37%) = $40,000 + $55,500 = $95,500.
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With harvesting (apply like‑term losses first):
* Long‑term: ($200,000 − $130,000) × 20% = $14,000.
* Short‑term: ($150,000 − $100,000) × 37% = $18,500.
* Tax = $14,000 + $18,500 = $32,500.
Harvesting in this example reduces tax by $63,000.
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Maintaining portfolio balance
Selling a losing position changes your asset allocation. To preserve your intended exposure:
* Buy a similar but not substantially identical security (e.g., a different ETF tracking the same index) immediately.
* Rebalance afterward to restore target allocations.
* Track holding periods if you want future gains to benefit from long‑term capital gains rates.
Practical considerations and tips
- Netting order matters: short‑term losses offset short‑term gains first (short‑term gains are taxed at higher ordinary rates).
- Keep good records of purchase and sale dates and amounts to support tax filing.
- Frequent harvesting can generate lots of transactions and wash-sale complexities—automated tools or advisor services can help.
- Harvesting is most useful when you have realized gains to offset or when you expect to be in the same or higher tax bracket.
- Be mindful of transaction costs, bid‑ask spreads, and the potential for deviating from your intended investment strategy.
Bottom line
Tax-loss harvesting can reduce your tax bill by using realized investment losses to offset gains and, to a limited extent, ordinary income. It can preserve portfolio exposure if executed carefully, but the wash-sale rule and recordkeeping are important constraints. Consider tax consequences, transaction costs, and whether professional advice or automated tools are appropriate for your situation.