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Tax-Loss Harvesting Calculator — general

Discover how to maximize your investment returns by calculating tax savings from selling losing assets with our tax loss harvesting calculator.

Business & Tax · Reviewed by FreeCalculators Editorial · Updated 2026-09-01

How it works

The Tax-Loss Harvesting Calculator is a valuable tool for investors looking to optimize their tax strategies. It helps you calculate the potential tax savings from selling assets that have decreased in value, allowing you to offset your capital gains. By realizing these losses, you can effectively reduce your taxable income, which in turn lowers your overall tax liability. The calculator computes tax savings based on the losses you can apply against your capital gains, providing a clear picture of your potential benefits. For example, let's say you have $10,000 in capital gains and $8,000 in available losses. If your capital gains tax rate is 15%, you can calculate your tax savings by multiplying your available losses by the tax rate: Tax savings = $8,000 × 0.15, which equals $1,200. This means that by harvesting your losses, you can potentially save $1,200 on your taxes. It's important to remember that any losses that exceed your gains can be carried forward to future tax years, allowing you to maximize your tax benefits over time. The primary output of the calculator is the tax savings figure, which indicates how much you can reduce your tax liability through tax-loss harvesting. This figure is crucial for making informed financial decisions and planning your investment strategy effectively. However, keep in mind that one common mistake investors make is ignoring the wash sale rule. If you sell a security at a loss and then repurchase it within 30 days, the IRS may disallow that loss for tax purposes, negating the benefits of your tax-loss harvesting strategy. In summary, the Tax-Loss Harvesting Calculator not only helps you understand your potential tax savings but also encourages proactive management of your investment portfolio. By leveraging this tool, you can make strategic decisions that enhance your financial outcomes while adhering to tax regulations.

Formula


                Tax savings = Losses used × Capital gains tax rate. Remaining losses carry forward.
              

Tips

  • Review your investment portfolio regularly to identify underperforming assets that can be sold for tax-loss harvesting.
  • Keep track of your capital gains and losses throughout the year to make informed decisions during tax season.
  • Consider the wash sale rule when planning your trades to ensure your losses are recognized for tax purposes.
  • Consult with a tax professional to understand how tax-loss harvesting can fit into your overall investment strategy.

Frequently asked questions

What is tax-loss harvesting?
Tax-loss harvesting is a strategy that involves selling investments at a loss to offset capital gains, thereby reducing taxable income.
How much can I save using tax-loss harvesting?
Your tax savings depend on your capital gains and tax rate. For example, if you have $10,000 in gains and $8,000 in losses at a 15% tax rate, you could save $1,200.
What happens to my remaining losses?
Any remaining losses after offsetting gains can be carried forward to future tax years, allowing you to continue benefiting from those losses.
What is the wash sale rule?
The wash sale rule disallows a tax deduction for a loss if you repurchase the same security within 30 days before or after the sale.