Burn Instruction

Permanently destroys tokens by removing them from circulation. This reduces the total supply of the token.

Before we can burn any token, we'll need to already have:

Initialized a Mint account.
A Token account or Associated Token account that already has at least the amount we want to burn.

The amount of tokens we burn are "normalized" for decimals. This means that if we want to burn 1 token that has 6 decimals, we'll need to actually put 1e6 as amount

Raw Instruction

By using just "raw" instruction without any abstraction, this is how burning a token would look like:

ts
// Burn tokens to ATA 
const burnInstruction = createBurnInstruction(
    tokenAccount, // token account
    mint, // mint
    keypair.publicKey // owner
    1e6, // amount
);
 
const transaction = new Transaction().add(burnInstruction);
 
const signature = await sendAndConfirmTransaction(connection, transaction, [keypair]);
 
console.log(`Tokens Burned! Check out your TX here: https://explorer.solana.com/tx/${signature}?cluster=devnet`);

Abstracted Instruction

This is how the same instructions would look like abstracted away with the burn() instruction:

ts
let tx = await burn(
    connection, // connection
    keypair, // payer
    tokenAccount, // token account
    keypair.publicKey, // owner of the token account
    1e6, // amount to transfer
);
 
console.log(`Succesfully Burned!. Transaction Here: https://explorer.solana.com/tx/${tx}?cluster=devnet`)

SPL Token with Web3.js

Burn Instruction

Raw Instruction

Abstracted Instruction

Checked Instruction