What is Tax-Loss Harvesting?
Tax-loss harvesting (TLH) is the practice of selling investments at a loss to offset capital gains and reduce your tax bill. You then immediately reinvest in similar (but not "substantially identical") securities to maintain your market exposure.
The Core Concept
If you have:
- $10,000 gain from selling Stock A
- $10,000 loss from selling Stock B
The loss offsets the gain, resulting in $0 taxable capital gains.
Why It's Valuable
- Reduce current year tax liability
- Convert short-term gains to long-term (by deferring)
- Offset up to $3,000 of ordinary income annually
- Carry forward unused losses indefinitely
How It Works
Step-by-Step Process
- Identify losses: Find positions trading below your cost basis
- Sell the losing position: Realize the loss for tax purposes
- Reinvest immediately: Buy a similar but not identical investment
- Wait 30+ days: Before repurchasing the original investment (optional)
- Record keeping: Track all transactions for tax filing
Example: ETF Tax-Loss Harvest
| Step | Action | Result |
|---|---|---|
| Original | Own $50,000 of VTI (cost basis $55,000) | $5,000 unrealized loss |
| Sell | Sell VTI for $50,000 | $5,000 realized loss |
| Reinvest | Buy $50,000 of ITOT (similar but not identical) | Stay invested in market |
| Tax benefit | $5,000 loss offsets gains | Save $750-$1,190 in taxes |
The Wash Sale Rule
The IRS wash sale rule prevents you from claiming a loss if you buy a "substantially identical" security within 30 days before or after the sale.
The 61-Day Window
- 30 days before the sale
- Day of the sale
- 30 days after the sale
If you buy the same security within this window, the loss is disallowed.
What's "Substantially Identical"?
| Scenario | Wash Sale? |
|---|---|
| Sell VTI, buy VTI | Yes (same fund) |
| Sell VTI, buy ITOT | No (different fund, same index is gray area) |
| Sell VTI, buy VXUS | No (different index entirely) |
| Sell Apple, buy Apple | Yes (same stock) |
| Sell Apple, buy Microsoft | No (different company) |
| Sell VOO, buy IVV | Gray area (both track S&P 500) |
Safe Tax-Loss Harvesting Pairs
| Sell | Buy (Replacement) |
|---|---|
| VTI (Total Stock) | ITOT or SCHB |
| VOO (S&P 500) | IVV or SPLG |
| VEA (Developed Int'l) | IEFA or SCHF |
| VWO (Emerging Markets) | IEMG or SCHE |
| BND (Total Bond) | AGG or SCHZ |
Tax Benefits
Offsetting Capital Gains
Harvested losses first offset capital gains:
- Short-term losses offset short-term gains first
- Long-term losses offset long-term gains first
- Remaining losses offset the other type
Offsetting Ordinary Income
After offsetting all gains, up to $3,000 of losses can offset ordinary income ($1,500 if married filing separately).
Carrying Losses Forward
Unused losses carry forward indefinitely until fully used.
Tax Savings Calculation
| Scenario | Tax Rate | Savings per $10,000 Loss |
|---|---|---|
| Offset short-term gains | 22-37% | $2,200-$3,700 |
| Offset long-term gains | 15-20% | $1,500-$2,000 |
| Offset ordinary income | 22-37% | $2,200-$3,700 (up to $3k) |
Implementation Strategy
When to Harvest
- Year-end: December is common for annual tax planning
- Market downturns: Volatility creates harvesting opportunities
- Ongoing: Throughout the year as opportunities arise
Automated Tax-Loss Harvesting
Some robo-advisors offer automatic tax-loss harvesting:
- Betterment: Daily tax-loss harvesting included
- Wealthfront: Daily harvesting, stock-level for larger accounts
- Schwab Intelligent Portfolios: Automatic harvesting
DIY Tax-Loss Harvesting Checklist
- Review positions with losses monthly or quarterly
- Calculate if loss is meaningful (at least $1,000)
- Identify replacement security
- Check for wash sales in past 30 days
- Execute sell and buy on same day
- Record transaction details for taxes
- Set calendar reminder for 31 days if you want original back
When Not to Harvest
Low/No Tax Situations
- Already in 0% capital gains bracket
- Losses exceed gains plus $3,000
- Expecting much higher income in future years
Small Losses
Transaction costs and complexity may not justify harvesting losses under $500-$1,000.
Tax-Advantaged Accounts
TLH doesn't work in IRAs, 401(k)s, or other tax-advantaged accounts—there are no capital gains to offset.
Want to Keep the Position
If replacement funds have different characteristics you don't want, staying in your original position may be better.
Tax-Loss Harvesting Best Practices
- Harvest losses greater than $1,000 for meaningful benefit
- Use similar but not identical replacement funds
- Track the 30-day wash sale window carefully
- Consider tax bracket when evaluating benefit
- Keep detailed records for tax filing
- Don't let tax tail wag the investment dog
Additional Editorial Notes
When reading Tax-Loss Harvesting Guide 2026: How to Save Thousands on Taxes, the practical question is not whether the theme sounds attractive. In Trading Strategies, readers need to separate time horizon, tax treatment, liquidity, currency exposure, and downside tolerance. Topics connected with Tax-Loss Harvesting, Tax Strategy, Capital Gains, Wash Sale, Tax Planning can look simple in headlines, but the result often depends on several moving assumptions. This review adds a clearer framework for readers returning to the page later.
Learn tax-loss harvesting strategy to reduce your tax bill. Understand wash sale rules, implementation steps, and when tax-loss harvesting makes sense. Still, a short description cannot cover the full decision process. The same yield can mean different things when currency conversion, account type, fees, and exit timing are included. A reader should first decide whether the money is short-term cash, medium-term savings, or long-term capital before drawing conclusions from market commentary.
How to Read This Page
| Lens | What to Check | Common Mistake |
|---|---|---|
| Time horizon | Separate near-term cash from long-term capital | Reacting to short-term moves with long-term money |
| Currency | Compare local-currency and home-currency outcomes | Treating currency gains as fundamental performance |
| Costs | Add fees, spreads, taxes, and fund expenses | Comparing only headline yields or returns |
| Liquidity | Check whether funds can be accessed when needed | Assuming normal-market conditions during stress |
Tax-Loss Harvesting Guide 2026: How to Save Thousands on Taxes is most useful when treated as a decision framework, not a single answer. Before acting on any market view, define when the money will be used, what currency it will be spent in, and what condition would make the position too large.
- Cash buffer: keep essential spending separate from market exposure.
- Concentration: avoid stacking assets that all respond to the same factor.
- Review date: decide when rates, rules, fees, and risks will be checked again.
- Exit condition: write down what would justify reducing exposure.
FAQ on Trading Strategies
FXの利益にかかる税率は？
国内FX業者は申告分離課税で一律20.315%、損失は3年繰越可能です。海外FX業者は総合課税の雑所得扱いで最大55%、損失繰越不可と税制が大きく異なります。
スワップ複利戦略は儲かりますか？
高金利通貨を長期保有して金利差収益を積み上げる戦略ですが、為替減価リスクが大きく、過去10年で多くの新興国通貨は名目金利を上回る下落を経験しました。一部資産での実験的活用が現実的です。
株式の損失は3年繰越できますか？
上場株式の譲渡損失は確定申告すれば3年間繰越可能、配当との損益通算もできます。NISA口座の損失は対象外で繰越できないため、ハイリスク銘柄をNISAに入れる際は注意が必要です。