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Recap HomeCrypto Tax Guide (Lite)HMRC Cryptoassets Manual
  • A Technical Guide to Cryptocurrency Tax for UK Individuals
    • What are Cryptoassets?
    • Who are Recap?
  • CRYPTOCURRENCY TAX
    • Do I Need to Pay Tax on my Cryptoassets?
    • Which Taxes Apply?
      • Capital Gains Tax (CGT)
      • Income tax
      • VAT
      • Inheritance tax
      • Stamp Duty
    • How Much Tax Will I Pay?
    • New HMRC DeFi Guidance
      • Overview of HMRC guidance
      • 1️⃣Is the Reward Income or Capital?
      • 2️⃣Is Beneficial Ownership (BO) transferred?
      • 3️⃣Consider the Tax Treatment
        • Staker/Lender/Collateral Provider
          • Income Rewards
            • BO transferred
              • ➡️At Point of Entry
              • ⬅️At Point of Exit
              • 💧On Liquidation
              • 💎On Receipt of Income Reward
              • Example 1A
              • Example 2A
            • BO not transferred
              • ➡️At Point of Entry
              • ⬅️At Point of Exit
              • 💧On Liquidation
              • 💎On Receipt of Income Reward
              • Example 1B
              • Example 2B
          • Capital Rewards
            • BO transferred
              • ➡️At Point of Entry
              • ⬅️At Point of Exit
              • 💧On Liquidation
              • 💎On Receipt of Capital Reward
              • Example 1C
              • Example 2C
            • BO not transferred
              • ➡️At Point of Entry
              • ⬅️At Point of Exit
              • 💧On Liquidation
              • 💎On Receipt of Capital Reward
              • Example 1D
              • Example 2D
        • Borrower
    • Investor or Trader?
      • Badges of Trade Limitations
      • HMRC Approach
      • Court Cases involving Financial Traders
    • Capital Gains Tax
      • Calculating the Capital Gains Position
      • Disposal proceeds
      • Disposals to Connected Parties
      • Allowable costs for CGT
        • Exchange fees
        • Forks - affect on allowable costs
      • Capital Loss Claims
    • Income Tax
      • Financial trading income
      • Miscellaneous Income
      • Employment income
    • Fair Market Valuation
  • TRANSACTION TYPES
    • 💷Selling Crypto for Fiat
    • 🔄Trading Crypto to Crypto
    • 🛍️Purchases using Crypto
    • 🎁Gifts
    • 💍Spouse Transfers
    • 🎗️Gifts to Charity, CASCs & Bodies for a National Purpose
    • 🎈Airdrops
    • 🤝Staking
    • 💸Transfers
    • 🍴Forks
    • ⛏️Mining
    • 👛Employment income
      • UK Employer
      • Overseas employer
      • National Minimum Wage (NMW)
    • 🚨Lost & Stolen Crypto
    • 🎲Gambling
    • 💧Liquidity Pools
      • Example - Liquidity pool
    • ⬆️Token Upgrades/Swaps
    • 🔮Cryptoasset derivatives (CFDs, Futures and Margin Trading)
    • 💼Crypto Loans
    • 🔄REPOS
    • 🪞Reflections Rewards
    • 👥Referral Income
    • 💳Cashback
    • 🎨NFTs (Non Fungible Tokens)
    • 🎮NFTs earned playing games
  • Record Keeping
  • Filing Your Self-Assessment
    • How to Register for Self-Assessment
    • How to Fill In the Tax Return
    • Submitting the Tax Return and Paying the Tax
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On this page
  • Negligible value claims
  • Losing private keys
  • Being defrauded

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  1. CRYPTOCURRENCY TAX
  2. Capital Gains Tax

Capital Loss Claims

PreviousForks - affect on allowable costsNextIncome Tax

Last updated 3 years ago

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Negligible value claims

HMRC confirms at that individuals can crystallise (‘bank’) capital losses for cryptoasset tokens that they still own, if they become worthless or of ‘negligible value’ while owned.

A treats the tokens as being disposed of and immediately re-acquired at an amount stated in the claim. As tokens are pooled, the negligible value claim needs to be made in respect of the whole section 104 pool, not the individual tokens.

A negligible value claim must state:

  • cryptoasset token which is the subject of the claim

  • amount the token should be treated as disposed of (which may be £nil)

  • date that the token should be treated as being disposed of and immediately re-acquired

You have to demonstrate that the asset had value and has later become of negligible value while you own it. This negligible value claim and the loss resulting from the claim is to be reported in a Tax Return.

You are deemed to dispose of the cryptoasset for its current market value, therefore resulting in a capital loss if the allowable costs are more than this. This loss can be used to reduce capital gains in the same tax year, or be carried forwards to reduce future capital gains.

An example of this could be a cryptoasset that the developers have stopped working on and is seemingly a “dead project”.

Losing private keys

Losing the private key to a wallet containing your cryptoassets cannot be treated as a disposal for capital gains tax purposes. The private key still exists as part of the cryptography, albeit it is not known to the owner any more. Similarly the tokens will still exist in the distributed ledger.

However, HMRC confirm at that if the individual can show that there is no prospect of recovering the cryptoassets, they can file a negligible value claim in their Tax Return, to claim a capital loss for these cryptoassets.

Being defrauded

Being the victim of theft resulting in the loss of cryptoassets is also not considered a disposal for CGT purposes, as the individual still owns the stolen asset and has a right to recover it.

If the individual can prove they did hold the cryptoasset tokens at some point (ie they received the tokens they contracted for), yet the tokens have become worthless, they can file a negligible value claim and claim a capital loss on their Tax Return. If the tokens were worthless when acquired, then a negligible value claim won’t be allowed.

However, those who did not receive the cryptoasset tokens that they paid for may not be able to claim a capital loss according to the HMRC guidance at .

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negligible value claim
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