Tax-Loss Harvesting Calculator

Isolate the mathematical truth of portfolio optimization. Instantly calculate your exact tax savings by offsetting capital gains, deducting ordinary income, and stacking carryover losses.

1. Realized Gains (Liability)

2. Harvested Losses (Shield)

3. Tax Bracket Rates

Calculations reflect standard offset rules. Consult a licensed CPA to verify personal return data.
Awaiting Parameters

Input realized gains and losses to map your structural tax erosion and carryforward.

Harvesting Liquidity Matrix

Decoding The Matrix: Tax-Loss Harvesting Rules

A catastrophic mathematical mistake many investors make is holding onto underwater assets purely out of emotional attachment, ignoring the massive institutional value of a capital loss. Tax-Loss Harvesting is the strategy of deliberately selling stocks, ETFs, or crypto at a loss to create a "Tax Shield." This shield is then used to mathematically erase the taxes you owe on capital gains you have realized elsewhere in your portfolio. Our Tax-Loss Harvesting Analyst automatically calculates the strict offset order required by tax authorities, revealing exactly how much cash you can legally save from the IRS.

Foundational Harvesting Underwriting Truths

To accurately map your true tax savings, you must strictly follow the regulatory order of operations:

  • The "Like-Kind" Offset Priority Rule

    Tax authorities demand that you offset like-kind categories first. A Short-Term Capital Loss (STCL) must first be applied against your Short-Term Capital Gains (STCG). A Long-Term Capital Loss (LTCL) must first offset Long-Term Capital Gains (LTCG). Only after these primary offsets are executed can a net loss in one category cross the boundary to offset a remaining net gain in the other category.

  • The $3,000 Ordinary Income Shield

    If you harvest aggressively and your total capital losses completely wipe out all your capital gains, the resulting "Net Capital Loss" does not disappear. You are legally allowed to use up to $3,000 of that net loss to offset your ordinary income (like your W-2 salary) for the year. Because ordinary income is typically taxed at your highest marginal rate, this $3,000 deduction is incredibly valuable.

  • Indefinite Carryforward

    Any remaining capital losses beyond the $3,000 ordinary income limit are classified as "Carryover Losses". These losses do not expire. They are carried forward indefinitely into future tax years to offset future capital gains, acting as a permanent tax shield on your balance sheet until fully utilized.

Expand Your Wealth Stack Modeling

Once you identify your exact tax savings, pivot your focus to capital reallocation. If you are generating a high net cash flow by avoiding taxes, determine whether you should use those yields to purchase physical assets using our Universal EMI Calculator. Alternatively, if you are carrying existing leverage, utilize our Debt Payoff vs Investment Analyst to run a side-by-side efficiency matrix to see if your newly shielded market yields actually outperform the guaranteed savings of paying down your loan interest.

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Frequently Asked Questions

How does Tax-Loss Harvesting work?

Tax-loss harvesting involves selling securities at a loss to intentionally trigger a 'Capital Loss'. This loss is then mathematically used to offset 'Capital Gains' you have realized elsewhere in your portfolio, directly reducing your tax liability for the year.

What is the order of offset for capital gains and losses?

Tax authorities generally require like-kind offsets first. Short-term losses must first offset short-term gains. Long-term losses must first offset long-term gains. Only after these primary offsets are complete can a net loss in one category cross over to offset a net gain in the other.

Can capital losses offset my regular salary?

Yes, up to a limit. If your total capital losses exceed your total capital gains, you can use the net loss to offset up to $3,000 of your ordinary income (like your salary) per year. Any remaining loss beyond that $3,000 is carried forward to future tax years indefinitely.

What is the Wash-Sale Rule?

The Wash-Sale rule prevents you from claiming a tax loss if you sell a security at a loss and then buy a 'substantially identical' security within 30 days before or after the sale. If you trigger a wash sale, the loss is disallowed for tax purposes and added to the cost basis of the new purchase.