Quick Answer
Tax loss harvesting saves money by selling investments at a loss to offset capital gains, reducing your tax bill. You can offset up to $3,000 of ordinary income annually if losses exceed gains. In the 22% tax bracket, this saves $660 in federal taxes alone.
Best Answer
Robert Kim, Tax Return Analyst
Best for investors with taxable investment accounts who want to minimize capital gains taxes
How tax loss harvesting reduces your tax bill
Tax loss harvesting is the strategy of selling investments at a loss to offset capital gains and reduce your taxable income. This legal tax strategy can save hundreds or thousands of dollars annually while maintaining your investment portfolio's overall allocation.
The mechanics of tax loss harvesting
When you sell an investment for less than you paid, you have a capital loss. These losses can offset:
1. Capital gains first: Dollar-for-dollar against both short-term and long-term capital gains
2. Ordinary income second: Up to $3,000 annually against wages, interest, and other income
3. Future years: Unused losses carry forward indefinitely
Example: $10,000 in losses saves real money
Assume you have $7,000 in capital gains and $10,000 in losses:
Tax loss harvesting scenarios by income level
Strategic implementation of tax loss harvesting
Timing matters: Harvest losses in years with high income or large capital gains. If you're expecting a bonus, stock option exercise, or Roth conversion, harvesting losses can offset the additional tax burden.
Wash sale rule: You cannot buy the same or "substantially identical" security within 30 days before or after the sale. Violating this rule disallows the loss deduction.
Asset location strategy: Keep tax-inefficient investments in tax-advantaged accounts and harvest losses only in taxable accounts.
Key factors that maximize tax loss harvesting benefits
What you should do
1. Review your taxable investment accounts for positions with unrealized losses
2. Calculate potential tax savings based on your income and capital gains
3. Identify suitable replacement investments to avoid wash sale violations
4. Consider using our refund estimator to project tax savings from loss harvesting
5. Consult with a tax professional for complex situations involving large amounts
Key takeaway: Tax loss harvesting can save $360-$960+ annually in federal taxes alone by offsetting $3,000 of ordinary income, while unused losses carry forward indefinitely for future tax savings.
*Sources: [IRS Publication 550](https://www.irs.gov/pub/irs-pdf/p550.pdf), [IRC Section 1211](https://www.law.cornell.edu/uscode/text/26/1211)*
Key Takeaway: Tax loss harvesting can save $360-$960+ annually in federal taxes by offsetting ordinary income with investment losses, while unused losses carry forward indefinitely.
Tax savings from harvesting $3,000 in losses by tax bracket
| Tax Bracket | Federal Tax Savings | State Tax Savings (5%) | Total Annual Savings |
|---|---|---|---|
| 12% | $360 | $150 | $510 |
| 22% | $660 | $150 | $810 |
| 24% | $720 | $150 | $870 |
| 32% | $960 | $150 | $1,110 |
More Perspectives
Michelle Woodard, Tax Policy Analyst
Best for younger investors building wealth who want to understand long-term tax loss harvesting strategy
Tax loss harvesting as a long-term wealth building strategy
For young investors, tax loss harvesting is less about immediate tax savings and more about building a "bank" of tax losses for future high-earning years.
The loss carryforward advantage
Unused capital losses carry forward indefinitely. If you harvest $5,000 in losses at age 25 but only use $3,000 annually, the remaining $2,000 waits for future use. This becomes valuable when:
Building your loss inventory early
Market volatility in your 20s and 30s creates harvesting opportunities. Even small losses add up:
This strategy builds a "tax loss reservoir" for higher-earning years ahead.
Wash sale considerations for young investors
Young investors often make wash sale mistakes by:
Solution: Use similar but not identical ETFs (e.g., sell VTI, buy ITOT) to maintain market exposure without wash sale violations.
Key takeaway: Young investors should view tax loss harvesting as building a tax loss inventory that becomes increasingly valuable as income rises over their career.
Key Takeaway: Young investors should build a tax loss inventory early that becomes more valuable as income rises, with unused losses carrying forward indefinitely.
Robert Kim, Tax Return Analyst
Best for retirees managing taxable investment accounts and controlling income for Medicare and Social Security
Tax loss harvesting in retirement planning
For retirees, tax loss harvesting serves different purposes: managing Medicare premiums, optimizing Social Security taxation, and controlling tax brackets during required minimum distributions.
Managing Medicare IRMAA surcharges
Modified Adjusted Gross Income (MAGI) above certain thresholds triggers Medicare Part B and D surcharges. For 2026, IRMAA begins at $103,000 (single) or $206,000 (married filing jointly). Tax loss harvesting can keep MAGI below these thresholds.
Example: Your MAGI would be $105,000, triggering a $70.90 monthly Medicare surcharge ($850 annually). Harvesting $3,000 in losses reduces MAGI to $102,000, avoiding the surcharge entirely.
Social Security taxation optimization
Up to 85% of Social Security benefits become taxable when "provisional income" exceeds $34,000 (single) or $44,000 (married filing jointly). Tax loss harvesting can reduce provisional income and minimize Social Security taxation.
Coordinating with RMD planning
Required Minimum Distributions from traditional IRAs and 401(k)s starting at age 73 can push retirees into higher tax brackets. Harvesting losses in years with large RMDs helps offset the additional taxable income.
Estate planning considerations
Investments receive a "stepped-up basis" at death, eliminating capital gains. Retirees should generally harvest losses on assets they don't plan to bequeath while holding appreciated assets for the step-up.
Key takeaway: Retirees should use tax loss harvesting strategically to manage Medicare surcharges, Social Security taxation, and RMD-related tax bracket jumps, potentially saving thousands annually.
Key Takeaway: Retirees can use tax loss harvesting to avoid Medicare surcharges, reduce Social Security taxation, and offset RMD income, potentially saving thousands in taxes and premiums.
Sources
- IRS Publication 550 — Investment Income and Expenses
- IRC Section 1211 — Limitation on capital losses
Reviewed by Michelle Woodard, Tax Policy Analyst on February 28, 2026
This content is for educational purposes only and is not a substitute for professional tax advice. Consult a qualified tax professional for advice specific to your situation.