InvestingIntermediate2 min

Tax-Loss Harvesting Calculator

Quantify capital gains tax offsets, the $3,000 ordinary income deduction, loss carryforwards, and 10-year reinvested tax alpha.

  • tax loss harvesting
  • capital gains offset
  • tax alpha
  • portfolio tax strategy
Tax-Loss Harvesting
Offset capital gains, deduct $3,000 of income, and carry forward losses.
This Year's Tax Savings
$6,000

Immediate reduction in current-year tax bill

Loss Carryforward Bank
$2,000

Rolls forward indefinitely to future tax years

10-Yr Reinvested Value
$11,803

If tax savings are reinvested at 7%/yr

Harvested Loss Allocation
How the IRS applies your harvested losses across short-term gains, long-term gains, and ordinary income.
Total$25,0004 components
Composition$25,000
Short-Term Gains Offset
$12,00048.0%
Long-Term Gains Offset
$8,00032.0%
Ordinary Income Offset ($3K Max)
$3,00012.0%
Future Tax Loss Carryforward
$2,0008.0%

Key Takeaway: Short-Term Gains Offset makes up 48.0% ($12,000) of the $25,000 total, compared to 32.0% ($8,000) for Long-Term Gains Offset.

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Guide

How to read this calculator

Helpful tips
  • 1Save your calculations by bookmarking this page with your inputs in the URL.
  • 2Try different scenarios to understand how changes affect your results.
  • 3Share this calculator with friends or family who might find it useful.
  • 4Use the results as a starting point for conversations with financial advisors.
  • 5Bookmark this page and revisit quarterly to track your progress toward goals.
How to Use the Tax-Loss Harvesting Calculator

Use the Tax-Loss Harvesting Calculator to model your inputs, compare scenarios, and export a clean one-page PDF summary.

Step-by-Step Instructions

1

Enter your primary financial figures in the left-hand input panel.

All metrics and charts update automatically in real time.
2

Review the top KPI summary cards and toggle between the visual chart, data table, and scenario comparison.

Use the chart view switcher to inspect exact period-by-period numbers.
3

Click 'One-Page PDF / Print' in the header to save or share a clean executive summary.

Ideal for sharing with your spouse, partner, accountant, or financial advisor.
When to Use This Calculator

Use before year-end to calculate the tax savings of selling losing positions to offset realized short-term and long-term capital gains.

tax loss harvestingcapital gains offsettax alphaportfolio tax strategy
Who Benefits Most
  • •Taxable Investors
  • •Wealth Managers
  • •High-Income Filers
2 min
Intermediate
Understanding Your Results

Understanding the outputs of the Tax-Loss Harvesting Calculator helps you make informed, numbers-backed decisions.

What Each Result Means

Primary Output Metric

The headline figure calculated from your inputs.

Interpretation: Compare this benchmark against your budget or investment target.

Scenario Comparison

Side-by-side evaluation of your current path vs. an alternative strategy.

Interpretation: Highlights the net financial advantage of optimizing your rate, term, or tax structure.

What to Do With Your Results

Frequently Asked Questions
Common questions about the Tax-Loss Harvesting Calculator
Getting Started(1 questions)

Understanding Results(1 questions)

Best Practices(1 questions)

Common Issues(1 questions)

Advanced(1 questions)

Still have questions? Check our financial glossary for definitions or explore our learning resources.

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