Top up Heimdall fee

This document provides instructions on how to top up the Heimdall fee for a PoS Validator.

The easiest way is via the Polygon Staking UI.

You can also do it manually by following the steps below; this requires basic Etherscan knowledge and key details like the Validator signer address.

  1. Head over to

  2. Enter the StakeManagerProxy contract address in the search box: 0x5e3Ef299fDDf15eAa0432E6e66473ace8c13D908

  3. Under the Code menu, select the Write as Proxy tab. Connect your Web3 wallet using the Connect to Web3 button.

    Figure: Connect wallet etherscan

  4. Scroll down to the topUpForFee method (#26 in the list) and select it. You will see something like the below screenshot.

    Figure: Topup Heimdall fee

  5. Fill in the details:

    • user: Validator’s Signer Address
    • heimdallFee: Topup fee (minimum 1 MATIC)
  6. After filling in the details, click on Write to sign the transaction.

Your Heimdall fee will be updated soon after the transaction completes.

Last update: February 8, 2024
Authors: EmpieichO