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burn-a-token.md

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Burn a token

Burns fungible and non-fungible tokens owned by the Treasury Account. If no Supply Key is defined, the transaction will resolve to TOKEN_HAS_NO_SUPPLY_KEY.

  • The operation decreases the Total Supply of the Token.
  • Total supply cannot go below zero.
  • The amount provided must be in the lowest denomination possible.
    • Example: Token A has 2 decimals. In order to burn 100 tokens, one must provide an amount of 10000. In order to burn 100.55 tokens, one must provide an amount of 10055.
  • This transaction accepts zero unit token burn operations for fungible tokens (HIP-564)

Transaction Signing Requirements

  • Supply key
  • Transaction fee payer account key

Transaction Fees

  • Please see the transaction and query fees table for base transaction fee
  • Please use the Hedera fee estimator to estimate your transaction fee cost
Constructor Description
new TokenBurnTransaction() Initializes the TokenBurnTransaction object 
new TokenBurnTransaction()

Methods

{% tabs %} {% tab title="V1" %}

Method Type Description Requirement
setTokenId(<tokenId>) TokenId The ID of the token to burn supply Required
setTokenAmount(<amount>) long The number of tokens to burn Optional
addSerial(<serial>) long Applicable to tokens of type NON_FUNGIBLE_UNIQUE. Serial ID to burn. Optional
setSerials(<serials>) List<Long> Applicable to tokens of type NON_FUNGIBLE_UNIQUE. A list of NFT serials to burn. Optional

{% code title="Java" %}

//Burn 1,000 tokens
TokenBurnTransaction transaction = new TokenBurnTransaction()
    .setTokenId(newTokenId)
    .setAmount(1000)

//Build the unsigned transaction, sign with the supply private key of the token, submit the transaction to a Hedera network
TransactionId transactionId = transaction.build(client).sign(supplyKey).execute(client);
    
//Request the receipt of the transaction
TransactionReceipt getReceipt = transactionId.getReceipt(client);
    
//Obtain the transaction consensus status
Status transactionStatus = getReceipt.status;

System.out.println("The transaction consensus status is " +transactionStatus);
//Version: 1.2.2

{% endcode %}

{% code title="JavaScript" %}

//Burn 1,000 tokens
const transaction = new TokenBurnTransaction()
    .setTokenId(newTokenId)
    .setAmount(1000)

//Build the unsigned transaction, sign with the supply private key of the token, submit the transaction to a Hedera network
const transactionId = await transaction.build(client).sign(supplyKey).execute(client);
    
//Request the receipt of the transaction
const getReceipt = await transactionId.getReceipt(client);
    
//Obtain the transaction consensus status
const transactionStatus = getReceipt.status;

console.log("The transaction consensus status is " +transactionStatus);
//Version 1.4.2

{% endcode %} {% endtab %} {% endtabs %}