Capital loss carryovers: The banking myth

Why capital loss carryovers are not savings accounts

Direct indexing and other tax-aware strategies often emphasize the value of harvested capital losses. Advisors and asset managers may describe this process as “banking losses” or building a “war chest” of future tax deductions.

The analogy suggests that investors can harvest losses today, preserve them for years and use them when a large taxable gain occurs, such as the sale of a business, real estate or a concentrated stock position.

Capital loss carryovers do not work like money in a savings account. Investors cannot decide to leave them untouched until a specific event. Current-year losses and prior-year carryovers are applied against gains as they arise under the tax code’s netting rules.

Suppose an investor harvests a large loss in 2026 and hopes to use it against a major capital gain expected in 2030. Taxable gains realized between 2026 and 2029 would draw down that balance first, whether the gains were intentional or unexpected. They could include capital gain distributions from a mutual fund even if the investor sold no shares.

Schedule D is used to calculate capital gains and losses. It pulls in the prior year’s capital loss carryovers on lines 6 and 14, just before the net short-term (ST) and long-term (LT) gains or losses are determined for the current tax year as shown in Figure 1. See Figure 2 for an illustration of how losses flow from Form 1099-B through Schedule D and turn into loss carryovers.

For Illustrative Purposes only.

Carryover rules limit taxpayer choice

The annual capital loss deduction against ordinary income provides another example. If capital losses exceed capital gains, taxpayers may generally deduct up to $3,000 of net losses against ordinary income each year. Any remaining balance carries forward to future years and is tracked on the IRS’s Capital Loss Carryover Worksheet.

Taxpayers cannot forgo the deduction to preserve losses for a later date. Losses from prior years flow through to the current year’s Schedule D for calculating capital gains. If losses exceed gains, the lesser of the net loss, or $3,000, reduces income on Form 1040.

An interesting side note is that the $3,000 deduction limit has been static for nearly five decades. Part of the Tax Reform Act of 1976, the deduction limit started at $1,000, moved to $2,000 in 1977 and has remained at $3,000 since 1978. While many provisions of the tax code have been indexed for inflation over time, this one has not. Had it been tracking the Consumer Price Index, the deduction would be north of $15,000 in 2026.

The static limit means some investors accumulate carryovers that may take years to fully utilize. Figure 3 illustrates how annual gains, distributions, and the $3,000 deduction can steadily reduce a carryover balance before an investor reaches the gain event they originally intended to offset.

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