How to Close an Ethereum Loan and Move Your Collateral

Closing an Ethereum lending position means repaying what you borrowed, then withdrawing the collateral left in the account. If you want those tokens on Polygon afterward, bridge them only once they are back in your wallet.

What should you do before withdrawing collateral?

First check the debt and the collateral in the lending app. A lending position is the record of your supplied assets and outstanding loan; interest usually keeps adding to the debt until you repay it.

  • Check the exact loan token and balance owed.
  • Keep enough ETH in your wallet for Ethereum transaction fees, called gas.
  • Repay the loan before withdrawing all collateral.

Repayment usually comes first because collateral helps secure the loan. Withdrawing too much while debt remains can lower the health factor, a measure of how safely collateral covers the loan. If it falls too far, the protocol may sell some collateral to cover the debt.

For example, if you borrowed USDC against ETH, repay the USDC balance plus accrued interest. Then withdraw the available ETH. A partial withdrawal can be possible, but check the health factor shown by the lending protocol before confirming it.

Repayment and withdrawal are separate transactions, so each may use gas. Make sure you have enough ETH for both; the tokens being repaid do not pay Ethereum gas fees.

How do you move the released tokens to Polygon?

After withdrawing, confirm the tokens arrived in your wallet on Ethereum. Polygon Bridge can then transfer supported tokens from Ethereum to Polygon; bridging does not repay or close the lending position for you.

Choose the same token you withdrew and check that it is supported for this route. For instance, if you withdrew ETH, bridge ETH rather than selecting a similarly named wrapped token. MetaMask is a wallet that can show your balances and ask you to approve transactions on each network.

The transfer takes time and may require transactions on both networks. You also need funds for fees: ETH for the Ethereum transaction and POL for activity on Polygon. The precise wait and cost vary, so do not plan to use the tokens on Polygon until they appear there.

One easy-to-miss detail: a successful bridge deposit puts the token on Polygon, but it does not automatically supply that token as collateral in a Polygon lending app. That would be a separate action, with its own loan terms and risks.

Before you start, check the debt is repaid, collateral is withdrawn, and the destination wallet is yours. Then use how Polygon Bridge moves tokens for the full transfer steps, and verify the received balance on Polygon before using it.

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