A falling portfolio balance does not automatically create a deductible tax loss. In the United States, an investor generally needs a taxable disposal—such as selling or exchanging an asset—to realize a capital gain or loss. CoinLedger can calculate those results across exchanges and wallets, but good decisions depend on complete cost-basis data, careful timing and an understanding of what the software can and cannot determine.

This is general educational information, not tax or investment advice. Loss rules and proposed legislation can change. Verify current law and your eligibility with a qualified U.S. tax professional before acting.

Realized loss versus unrealized decline

An unrealized decline exists while an investor still holds an asset that is worth less than its cost basis. A realized capital loss generally occurs when that asset is sold, exchanged, spent or otherwise disposed of for less than its adjusted basis. Simply seeing a lower market price is not enough.

If one ETH was acquired for $3,000 and later sold for $2,200, the simplified loss is $800 before considering fees or basis adjustments. If the ETH remains in the wallet, the $800 decline is normally unrealized. Accurate results require the actual acquisition lot, disposal proceeds and transaction costs.

How capital losses may help

Under the general U.S. capital-gain framework, capital losses first offset capital gains. When total allowable losses exceed gains, an individual may generally use a limited net amount against other income, with remaining eligible losses carried to later years. The frequently cited annual limit is $3,000 for many filers, but filing status and individual circumstances matter.

Short-term and long-term gains and losses are netted through specific steps. That classification matters because long-term gains may receive different rates, while short-term gains are generally taxed at ordinary rates. Do not choose transactions only from a headline tax benefit without considering market exposure, transaction costs and portfolio goals.

What is crypto tax-loss harvesting?

Tax-loss harvesting is the deliberate realization of losses to offset taxable gains. A trader might sell an underwater position before year-end and decide whether to buy another asset, remain in cash or re-establish exposure. The tax result is only one part of the decision: spreads, network fees, slippage and rapid price movement can outweigh the expected savings.

Commentary often notes that the securities wash-sale rule has historically not applied to cryptocurrency treated as property. That area is subject to legislative attention and should never be treated as permanently settled. Confirm the law in force on the transaction date and consider substance, related-party rules and other anti-abuse principles with an adviser.

Using CoinLedger to identify and document losses

  1. Import the complete history from every exchange, wallet and supported blockchain.
  2. Resolve missing cost basis before trusting estimated gains and losses.
  3. Match transfers between owned accounts so withdrawals are not mistaken for disposals.
  4. Review income, fees, gifts and DeFi activity that may require different classifications.
  5. Select the allowed accounting method consistently and inspect the affected tax lots.
  6. Generate reports only after comparing major results with original records.

A dashboard showing a potential loss is not a trade instruction. CoinLedger organizes historical information; it does not know a user’s risk tolerance, future price expectations or entire tax situation. Execute transactions through the chosen wallet or exchange only after an independent decision.

Loss situations that need extra care

Hacks and stolen assets

A theft is not necessarily treated like a normal market sale. U.S. deductions for personal theft losses have been restricted, and facts can vary. Keep police reports, exchange correspondence, wallet evidence and transaction hashes, then seek professional advice instead of forcing the event into a sale category.

Bankruptcy and frozen accounts

A claim against a failed platform may retain value even when withdrawals stop. The timing and character of a loss can depend on bankruptcy distributions, claims and whether recovery is still possible. Do not enter a zero-value disposal solely because access is delayed.

Worthless or illiquid tokens

A price close to zero does not by itself prove a completed disposal. If there is no market, sending tokens away or using a specialized disposal service raises documentation and substance questions. Record the method, counterparties and any compensation or fees.

Depegged stablecoins

A stablecoin that falls below its target value can create a capital loss when disposed of, but basis and proceeds still need evidence. Trading into another token is generally different from merely continuing to hold the depegged asset.

Frequent reporting mistakes

  • Claiming a loss for assets that were never disposed of.
  • Using zero basis because an earlier exchange or wallet was not imported.
  • Counting an internal wallet transfer as a sale.
  • Importing overlapping API and CSV histories and doubling the result.
  • Ignoring fees that affect proceeds or basis.
  • Assuming a 1099 form contains the complete multi-platform history.
  • Waiting until filing day to reconstruct years of acquisition records.

Year-end documentation checklist

Export account histories before platforms restrict old data. Save transaction hashes, screenshots or confirmations for unusual disposals, and preserve the calculation method used in the filed return. Compare the CoinLedger capital-gains report with broker information forms and explain material differences in your records.

Crypto losses can reduce taxable gains when they are realized, calculated and reported correctly. The strongest workflow combines complete data, reasonable classifications, retained evidence and professional review for thefts, bankruptcies or aggressive strategies.

Official topic reference: CoinLedger — How crypto losses can reduce taxes.