Many taxpayers know that investment gains are taxable. Fewer understand what happens when investments lose money. Whether the loss comes from stocks, mutual funds, ETFs, cryptocurrency, or other capital assets, the Internal Revenue Code contains specific rules governing how and when those losses can be deducted.

The good news is that unused capital losses generally do not disappear. Under certain circumstances, they can be carried forward for years and used to offset future gains. Understanding these rules can help taxpayers avoid leaving valuable tax benefits on the table.

What Is a Capital Loss?

A capital loss occurs when a taxpayer sells a capital asset for less than its adjusted basis. Common examples include:

• Stocks
• Bonds
• Mutual funds
• ETFs
• Cryptocurrency
• Investment real estate (subject to special rules)
• Certain business investments

Capital losses are reported on Form 8949 and Schedule D of Form 1040.

The General Rule Under IRC § 1211

Congress limits the amount of capital losses that individuals may deduct against ordinary income.

IRC § 1211(b) provides:

“In the case of a taxpayer other than a corporation, losses from sales or exchanges of capital assets shall be allowed only to the extent of the gains from such sales or exchanges, plus (if such losses exceed such gains) the lower of—

(1) $3,000 ($1,500 in the case of a married individual filing a separate return), or

(2) the excess of such losses over such gains.”

In plain English, taxpayers must first use capital losses against capital gains. If losses still remain, they may generally deduct up to $3,000 per year against ordinary income.

What Happens When Losses Exceed the Annual Limit?

This is where IRC § 1212 becomes important.

IRC § 1212(b)(1) provides:

“If a taxpayer other than a corporation has a net capital loss for any taxable year, the amount thereof shall be treated in the succeeding taxable year as a short-term capital loss.”

The practical effect is significant. Unused losses generally carry forward indefinitely until they are fully utilized.

Example

Assume Sarah sells investments during 2026 and realizes:

• Capital gains: $5,000
• Capital losses: $40,000

Her net capital loss equals $35,000.

The tax treatment generally works as follows:

2026 Return

• $5,000 gain offset by losses
• Remaining loss: $35,000
• Deduct $3,000 against ordinary income
• Carry forward: $32,000

2027 Return

If Sarah has no capital gains in 2027:

• Deduct another $3,000
• Carry forward: $29,000

The process continues until the carryover is exhausted or future gains absorb it.

Treasury Regulations Confirm the Carryover Treatment

Treasury Regulation § 1.1212-1 explains that capital loss carryovers retain their character and are carried into future years according to the statutory framework established by IRC § 1212.

The regulations provide the computational framework used on Schedule D to determine available carryovers from prior years.

Why This Matters for Investors

Many taxpayers incorrectly assume investment losses are “lost” if they exceed the annual deduction limit.

In reality, large market declines may generate tax benefits that continue for many years.

This can be especially important for:

• Retirees with investment portfolios
• Cryptocurrency investors
• Active traders
• Individuals selling rental or investment property
• Taxpayers experiencing market downturns

A substantial loss today may reduce taxes on future gains years from now.

Capital Loss Carryovers and Death

One often-overlooked rule is that capital loss carryovers generally do not survive the taxpayer’s death.

If a taxpayer dies with unused capital loss carryovers, those carryovers generally expire and cannot be transferred to heirs.

As a result, taxpayers with large carryovers may wish to discuss tax-planning strategies with a qualified tax professional.

Common Mistakes

Taxpayers frequently make the following errors:

Losing Track of Carryovers

Carryovers must generally be calculated and reported each year. Failure to preserve prior-year records can create problems later.

Ignoring Prior-Year Returns

A taxpayer may have a valuable capital loss carryover from years earlier that continues to reduce future taxes.

Assuming Cryptocurrency Losses Are Different

For federal income tax purposes, cryptocurrency is generally treated as property. Capital loss rules often apply in much the same way they do for stocks and other investments.

Forgetting State Tax Differences

Some states follow federal capital loss rules closely, while others have significant differences.

Final Thoughts

Capital losses may feel painful when investments decline, but the tax code provides a measure of relief. Under IRC §§ 1211 and 1212, taxpayers can generally use losses to offset gains and, when losses exceed annual limits, carry unused amounts forward into future years.

For taxpayers with significant investment losses, understanding capital loss carryovers can produce meaningful tax savings for years to come. Careful recordkeeping and proper Schedule D reporting are essential to ensure these valuable tax attributes are preserved and utilized correctly.

At Dino Tax Co, we help clients navigate tax matters ranging from unfiled returns to IRS letters and levies and everything in between with clarity and confidence. If you’d like guidance on your situation, schedule a consultation today. Call or text (713) 397-4678 or email davie@dinotaxco.com. We’re here to help you take the next step.