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Capital Loss Carryover Calculator

Net your short-term and long-term capital gains and losses the way the IRS Schedule D Capital Loss Carryover Worksheet does, see how much you can deduct against ordinary income this year ($3,000, or $1,500 if married filing separately), and how much carries forward to next year.

01INPUTS
Your Capital Gains & Losses

THIS YEAR'S DEDUCTION

$3,000

Against ordinary income (limit $3,000)

SHORT-TERM CARRYOVER

$0

LONG-TERM CARRYOVER

$7,000
Netting Breakdown
Net short-term gain/(loss)
$0
Net long-term gain/(loss)
-$10,000
Total net gain/(loss)
-$10,000
Annual deduction limit
$3,000
Deductible against ordinary income this year
$3,000
Total carried forward to next year
$7,000
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How the Capital Loss Carryover Works

Net ST and LT Separately

First net all short-term gains against short-term losses, and all long-term gains against long-term losses, giving two separate figures.

Combine, Then Check for a Net Loss

Add the net short-term and net long-term results together. If the combined total is a loss, you may be eligible for the ordinary-income deduction.

$3,000 Annual Deduction Limit

IRC §1211(b) caps the amount of net capital loss deductible against ordinary (W-2, interest, etc.) income at $3,000 per year — $1,500 if married filing separately.

Indefinite Carryforward

Losses beyond the annual limit carry forward every year under IRC §1212(b) with no expiration, preserving their short-term/long-term character, until fully used.

Worked example

Single filer with $0 short-term activity and a $10,000 net long-term capital loss for the year.

Step Amount
Net long-term loss-$10,000
Net short-term gain/loss$0
Total net capital loss-$10,000
Deductible against ordinary income (capped at $3,000)$3,000
Long-term loss carried forward to next year$7,000

Next year, the $7,000 long-term carryover is netted against that year's gains and losses on the Schedule D worksheet first — if there still isn't enough offsetting gain, another $3,000 deducts against ordinary income and the remaining $4,000 carries forward again.

Frequently asked questions

How much capital loss can I deduct in one year?

Under IRC §1211(b), you can deduct up to $3,000 of net capital losses against ordinary income per year ($1,500 if married filing separately). Any loss beyond that limit carries forward to future tax years — there's no expiration date under IRC §1212(b), and it carries forward indefinitely until fully used or until you die (unused carryovers do not transfer to your estate or heirs).

Does short-term or long-term loss get used first against the deduction?

The IRS Schedule D Capital Loss Carryover Worksheet nets short-term gains/losses and long-term gains/losses separately first. If the combined result is a net loss, the deduction against ordinary income draws from the net short-term loss FIRST, and only dips into the net long-term loss once the short-term loss is exhausted. This matters for character: short-term losses would otherwise offset ordinary-rate short-term gains, while long-term losses are more "valuable" against 0%/15%/20% long-term gains — so using short-term first preserves your long-term losses for future high-value offsetting.

How long can I carry forward a capital loss?

Indefinitely, per IRC §1212(b) — there is no expiration. Each year you either have enough capital gains to absorb the carryover, or you deduct up to $3,000 ($1,500 MFS) against ordinary income and carry the remainder forward again. The carryover keeps its original short-term or long-term character every year until fully used. The only way a carryover is lost is if the taxpayer dies before using it — capital loss carryovers do NOT pass to an estate, surviving spouse (on a separate return), or heirs.

Do capital gains in a later year offset the carryover first?

Yes. In any year you have a carryover, it's netted against that year's new capital gains and losses on the Schedule D worksheet just like current-year losses would be — same-character gains are offset first (ST carryover vs ST gains, LT carryover vs LT gains), with any leftover applied cross-character. Only after full netting does the $3,000 ($1,500 MFS) ordinary-income deduction apply to what's left.

Does married filing separately really halve the limit?

Yes — IRC §1211(b)(2) sets the MFS annual deduction limit at $1,500, exactly half of the $3,000 limit for single, married filing jointly, head of household, and qualifying surviving spouse filers. This mirrors the general MFS pattern of halving joint-filer thresholds and is one of several reasons MFS is usually the more expensive filing choice for couples with investment losses.

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