How to Add Liquidity on Polygon & Avalanche (Uniswap, Cheap Gas)

How to add liquidity on Polygon and Avalanche is attractive because gas is extremely cheap — often under one cent. Both are EVM networks with Uniswap v2, v3 and v4 pools supported by BaniPool. The difference from L2s like Base: Polygon PoS and Avalanche C-Chain have public mempools, so sandwiches can happen. This guide covers the top pools, the steps, and how to protect swaps.

Top pools (BaniPool data, November 10, 2026)

Avalanche C-Chain

Polygon PoS

The WAVAX/USDC 0.05% pool on Avalanche traded almost 8× its TVL in a day — one of the highest APRs for a major pair on any network. On Polygon there are two USDC/WETH pools with the same fee. Uniswap v3 allows only one pool per token pair and fee, so they use different USDC tokens — typically native USDC and bridged USDC.e. Check token addresses before depositing.

Steps to add liquidity

1. Set up a wallet (MetaMask, Rabby; Core for Avalanche) and a little POL or AVAX for gas.
2. Open Polygon pools or Avalanche pools, sort by TVL.
3. Check the security grade, 24h volume, Fee APR and token addresses (USDC version).
4. Choose Zap In (pay with POL/AVAX) or Add liquidity, set a range, and sign.
5. Track it in your Profile. Cheap gas keeps frequent rebalancing sensible.

Protecting swaps in a public mempool

There is no documented public private-RPC service for Polygon or Avalanche yet, so BaniPool does not offer a private mempool there. Protect yourself with:

• tight slippage — start from BaniPool's Auto setting;
• splitting large swaps into smaller ones;
• liquid pools so price impact stays small.

More on bots: what is a sandwich attack.

Creating a pool

Create a pool on Polygon or on Avalanche — costs are tiny, good for stablecoin pairs or community tokens.

FAQ

Why is the WAVAX/USDC APR 145%?

Its 24h volume was about $22.5M on about $2.9M TVL. APR follows daily volume, so it can fall when volume normalizes.

What is the difference between POL and MATIC?

POL is the Polygon PoS gas token that replaced MATIC. In pools it appears as WPOL.

Are Polygon and Avalanche prone to sandwiches?

More than sequencer L2s because they have public mempools, but MEV activity is lower than on Ethereum and BNB Chain.