Tax-Loss Harvesting Strategy: How to Turn Investment Losses into Tax Savings

Brett R. Henderson, CIMA®, CPFA®, CRPS®, CEPA®, AIF®, CLU®, BFA™ · Tax Planning

Tax-loss harvesting involves realizing investment losses in taxable accounts to offset capital gains, subject to tax rules. Potential benefits depend on your circumstances, future gains, transaction costs and replacement investments. Review any proposed trade and the wash-sale rules with your tax advisor.

Key Takeaways

✓ Tax planning may help reduce taxes, depending on your circumstances.
✓ Timing of income recognition and deductions impacts your overall tax burden
✓ Coordinate tax strategies with your tax and investment advisors.
✓ Tax laws change frequently — ongoing planning is essential

What Is Tax-Loss Harvesting?

Realized capital losses can offset capital gains, subject to tax rules. If net capital losses exceed gains, up to $3,000 ($1,500 if married filing separately) may be deducted against other income annually. Unused losses generally carry forward. Filing status and other limitations can affect treatment.

How Does Tax-Loss Harvesting Work?

The process involves several key steps:

Identify positions trading below cost basis in your taxable accounts
Sell the depreciated security to realize the capital loss
Evaluate replacement investments that are not substantially identical.
Apply the realized loss against capital gains on your tax return

The Wash Sale Rule: Critical Compliance

A wash sale can disallow a loss when substantially identical stock or securities are acquired within 30 days before or after a loss sale. Review purchases across accounts, including your IRA or Roth IRA.

When Is Tax-Loss Harvesting Most Effective?

Consider tax-loss harvesting in the context of realized gains, transaction costs, portfolio goals and applicable tax rules. A market decline does not establish that selling will improve your overall financial outcome.

Short-Term vs. Long-Term Capital Losses

Net short-term gains and losses separately from long-term gains and losses, then combine the results under the applicable tax rules. Holding periods, income and the type of asset affect the tax treatment.

When should I harvest tax losses?

Opportunities may arise during market changes, rebalancing or a periodic tax review. Whether to sell depends on your circumstances; working with an advisor does not assure beneficial timing or savings.

Can I harvest losses in retirement accounts?

Sales inside an IRA or 401(k) generally do not create deductible capital losses. An IRA purchase can, however, disallow a related loss in a taxable account under the wash-sale rule.

How much can tax-loss harvesting save me?

Results depend on gains, losses, applicable tax rates, costs and future transactions; savings are not assured.

Written by Brett R. Henderson, CIMA, CPFA, CRPS, CEPA, AIF, CLU, BFA | Last Updated: September 9, 2026

Common Mistakes to Avoid

Mistake #1: Waiting until year-end to plan
Tax planning should be a year-round activity, not a December scramble
Mistake #2: Ignoring state tax implications
State taxes can significantly impact your overall strategy
Mistake #3: Not coordinating with other advisors
Tax, legal, and financial advisors should work together

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This content is educational and is not personalized investment advice. Investing involves risk, including loss of principal. Past performance does not guarantee future results.

Neither Brett Henderson nor Vanderbilt Financial Group provides tax or legal advice. Please consult with your tax and/or legal advisors regarding your personal circumstances.

Brett R. Henderson is a registered representative of Vanderbilt Securities, LLC and investment advisor representative of Consolidated Portfolio Review. Securities offered through Vanderbilt Securities, LLC. Member FINRA, SIPC. Advisory Services offered through Consolidated Portfolio Review.

Authoritative Sources:

IRS Publication 550: https://www.irs.gov/publications/p550

IRS Topic 409: https://www.irs.gov/taxtopics/tc409

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Authoritative Sources

These primary sources explain the applicable rules and planning considerations; they do not assure tax savings.

SEC Investor.gov: Wash Sales

FINRA: Managing Your Retirement Portfolio

IRS Publication 550: Investment Income and Expenses

Tax planning is not just about reducing your current tax bill - it can also help optimize your lifetime tax burden. Strategies such as Roth conversions, withdrawal sequencing, and tax-loss harvesting may help reduce taxes and preserve more of your retirement savings, depending on your individual circumstances.

How Do Different Strategies Compare?

Traditional IRA / 401(k): Withdrawals are generally taxable except for after-tax basis. RMD timing depends on birth year and account type; some current-employer plans allow deferral until retirement, with exceptions. Roth IRA / Roth 401(k): Qualified withdrawals are tax-free. Neither requires lifetime RMDs for the owner; beneficiary rules differ.

Taxable brokerage: Income and realized gains may be taxable. A withdrawal sequence should reflect your overall circumstances.

HSA: Withdrawals used for qualified medical expenses are tax-free. Other withdrawals may be taxable and subject to additional tax.

Frequently Asked Questions

How can I reduce my tax burden in retirement?

Roth conversions, loss realization and withdrawal decisions may affect retirement taxes. Review potential benefits, costs and eligibility with your tax advisor in light of your circumstances; no single strategy is suitable for everyone.

Should I do a Roth conversion?

Compare the conversion tax cost with potential future tax treatment, cash needs and your goals. Qualified Roth distributions are tax-free; beneficiaries have separate distribution rules. Review timing and amounts with your tax advisor.

What are the tax implications of Social Security benefits?

Up to 85% of Social Security benefits may be taxable depending on your combined income. Strategic planning around income sources can help minimize the tax impact on your Social Security benefits.

What Tax Planning Actions Should You Prioritize?

Effective tax planning requires proactive strategies implemented throughout the year, not just during tax season. Consider these priority actions:

Review your withholding and estimated payments: The IRS Tax Withholding Estimator can help you determine if your current withholding is appropriate to avoid surprises at tax time.
Evaluate Roth conversion opportunities: Compare current and potential future taxes before converting. Qualified Roth IRA distributions are tax-free, but conversion income and withdrawal rules can affect the outcome. Review the amount with your tax advisor.
Harvest tax losses: Tax-loss harvesting can be an effective strategy for potentially reducing taxes on investment gains in taxable accounts.
Review retirement contributions: Pre-tax workplace contributions may reduce current taxable wages. Traditional IRA deductibility depends on eligibility, income and workplace-plan coverage; Roth contributions are not deductible.
Review charitable giving: Discuss whether bunching donations or using a donor-advised fund fits your goals. Deductibility depends on applicable limits, eligibility and whether you itemize.

Effective tax planning can help individuals and families identify opportunities to reduce their tax burden and improve after-tax outcomes.

How to Create a Tax-Efficient Retirement Plan: Step-by-Step

Implementing a tax-smart strategy requires a systematic approach:

1. Step 1: Map your income sources. Identify all current and projected retirement income streams, including Social Security, pensions, 401(k)/IRA distributions, and taxable investment income.
2. Step 2: Estimate your future tax bracket. Project your retirement income to determine which federal and state tax brackets you will likely fall into, using resources from the IRS.
3. Step 3: Evaluate Roth conversion opportunities. Compare the taxable conversion amount, available funds to pay taxes, and potential future tax treatment. Savings are not assured.
4. Step 4: Review wash sales. SEC Investor.gov: Wash Sales explains that IRS rules disallow wash-sale losses. Review substantially identical purchases within 30 days before or after a loss sale.
5. Step 5: Plan withdrawals. FINRA: Managing Your Retirement Portfolio advises considering all assets and income sources, taxes and your circumstances when deciding what to do with an account.
6. Step 6: Review charitable options. Ask your tax advisor whether you qualify for a direct IRA-to-charity distribution and how the rules and limits apply to any required distribution.
7. Step 7: Review periodically with your advisors. Revisit your circumstances and applicable tax rules. A review may identify changes to consider but cannot assure savings or prevent every mistake.

Tax-efficient retirement planning may help reduce the taxes you pay throughout retirement, depending on your individual circumstances. Book your tax strategy session.

Wash-sale review A disallowed loss generally adjusts the replacement investment basis. If your IRA or Roth IRA buys the replacement, the loss does not increase the IRA basis. Review automatic reinvestments and other relevant purchases before a loss sale.

Primary references

SEC Investor.gov: Wash Sales

FINRA: Managing Your Retirement Portfolio

IRS Publication 550: https://www.irs.gov/publications/p550

IRS Topic 409: https://www.irs.gov/taxtopics/tc409

IRS Publication 590-A: https://www.irs.gov/publications/p590a

IRS Publication 590-B: https://www.irs.gov/publications/p590b

IRS Publication 969: https://www.irs.gov/publications/p969

IRS required minimum distributions FAQs:

irs.gov/retirement-plans/retirement-plan-and-ira-required-minimum-distributions-faqs