How Much of a Capital Loss Can Offset Ordinary Income in One Year?
An investment loss can feel like it should provide a big tax break the moment it happens, but the tax rules only allow a limited slice of that loss to reduce wages and other ordinary income in any single year.
The short answer
After capital losses are netted against capital gains, only a set annual amount of any remaining net capital loss can be used to offset ordinary income such as wages in that year — an amount set by the government and subject to change over time. Any loss beyond that annual amount isn’t lost; it carries forward to be used in future years.
Why there’s a cap at all
Capital gains and losses are netted together first, following the standard netting process across short-term and long-term categories. If gains exceed losses, there’s a net gain and this limit doesn’t apply. But if losses exceed gains, the excess becomes a net capital loss, and that’s where the annual cap comes in — it puts a ceiling on how much of that net loss can reduce other kinds of income, like a paycheck or interest income, in the same year, which is part of why deliberate strategies like tax-loss harvesting are usually planned around multi-year timelines rather than a single tax season.
An illustrative example
Say an investor sells positions during the year and ends up with a net capital loss of several thousand dollars after all gains and losses are combined. Only a portion of that loss — up to the annual limit — reduces the current year’s taxable ordinary income. The remainder doesn’t get wasted; it simply waits.
What happens to the leftover amount
Any net capital loss above the annual limit becomes a capital loss carryover into the following year, where it’s treated much like a fresh loss: it first nets against that year’s capital gains, and then, if there’s still an excess, up to the annual limit can again offset ordinary income, with any remainder carrying forward again. In theory, a large enough loss can carry forward for many years, chipping away at ordinary income a limited amount at a time until it’s fully used.
A few things that trip people up
- The limit applies per return, not per account. Losses and gains across every taxable account get combined before the limit is applied, not calculated separately account by account.
- Filing status can change the math. The annual limit can differ depending on filing status, which is worth checking against current rules rather than assuming it’s the same amount in every situation.
- The limit is unrelated to investment gains in future years. A carryover loss doesn’t expire just because a portfolio recovers; it’s available to offset future gains and, within the same annual limit, future ordinary income, whether the market goes up or down in the meantime.
- This is separate from wash sale concerns. Realizing a loss on purpose to use against ordinary income is a legitimate strategy, but repurchasing a substantially identical investment too soon can disallow the loss under separate rules.
What to weigh
Because only a limited amount of a capital loss reduces ordinary income each year, a very large loss — from a concentrated stock position, a business investment, or a rough trading year — often ends up being used gradually across several tax years rather than all at once. The value of that offset also depends on where the loss falls relative to your marginal tax rate in each of those years, so keeping track of the carryover amount from year to year, rather than assuming a loss was “used up” the year it happened, is generally the more accurate way to think about it.