Polymarket Contract Addresses (2026): CTF, Exchange and pUSD

Addresses on this page are copied from Polymarket's official contracts page as of October 2026. Always confirm against that page before sending funds or approvals.

What are Polymarket's core trading contracts?

Orders are signed for a specific exchange, so the exchange has to match the market. Multi-outcome events where only one outcome can win, such as elections, are negative risk markets and settle on the Neg Risk CTF Exchange. Everything else settles on the CTF Exchange. Read the market's negRisk flag from Polymarket's API rather than guessing.

What are the pUSD and collateral contracts?

pUSD is the token all Polymarket trading settles in: a standard six-decimal ERC-20 on Polygon, backed by USDC and enforced onchain. Use the proxy address, never the implementation. To get pUSD, you approve the CollateralOnramp, not the pUSD token, to spend your USDC.e, then call its wrap function. The CollateralOfframp unwraps it again.

The two collateral adapters handle position operations outside the order book: splitting pUSD into a full set of outcome tokens, merging a balanced set back into pUSD, and redeeming winning tokens after resolution. Standard markets use the CtfCollateralAdapter, and negative risk markets use the NegRiskCtfCollateralAdapter. Redemption is covered step by step in how to redeem winning positions with the Polymarket API.

What are the wallet and resolution contracts?

The factories create the smart wallets that hold most users' funds. That is why the address you trade from is often not the address you signed up with, as explained in how to find and use your Polymarket proxy wallet. The UMA contracts handle resolution: anyone can propose an outcome through the UMA Optimistic Oracle, and anyone can dispute it.

What are the Combos contracts?

Combos, Polymarket's multi-leg positions, run on their own set of contracts. Each sits behind a proxy, and the proxy is the address to integrate with:

Which contract do you need for each task?

How do you check a balance or approval in code?

Reads are free and need no key. This checks a wallet's pUSD balance, its pUSD allowance for the CTF Exchange, and whether its outcome tokens are approved for redemption, using viem:

import { createPublicClient, http, erc20Abi, formatUnits, parseAbi } from 'viem';
import { polygon } from 'viem/chains';

const client = createPublicClient({ chain: polygon, transport: http() });

const PUSD = '0xC011a7E12a19f7B1f670d46F03B03f3342E82DFB';
const CTF = '0x4D97DCd97eC945f40cF65F87097ACe5EA0476045';
const CTF_EXCHANGE = '0xE111180000d2663C0091e4f400237545B87B996B';
const CTF_COLLATERAL_ADAPTER = '0xAdA100Db00Ca00073811820692005400218FcE1f';
const wallet = '0xYourPolymarketWallet';

const ctfAbi = parseAbi(['function isApprovedForAll(address owner, address operator) view returns (bool)']);

const [balance, allowance, adapterApproved] = await Promise.all([
  client.readContract({ address: PUSD, abi: erc20Abi, functionName: 'balanceOf', args: [wallet] }),
  client.readContract({ address: PUSD, abi: erc20Abi, functionName: 'allowance', args: [wallet, CTF_EXCHANGE] }),
  client.readContract({ address: CTF, abi: ctfAbi, functionName: 'isApprovedForAll', args: [wallet, CTF_COLLATERAL_ADAPTER] }),
]);

console.log('pUSD balance:', formatUnits(balance, 6));
console.log('pUSD allowance for the CTF Exchange:', formatUnits(allowance, 6));
console.log('Outcome tokens approved for the collateral adapter:', adapterApproved);

How do you avoid hardcoding the wrong contract?

Copy addresses only from Polymarket's official contracts page, never from a message, a forum post or a token list. Fake contracts with familiar names are a common way to steal approvals. Check each address on Polygonscan before you approve it, and re-check after Polymarket upgrades, since this list changed with CTF Exchange V2 and the move to pUSD.

If you would rather not maintain the mapping yourself, the Predictefy API reads each Polymarket market's negRisk flag and pins the matching exchange when it builds an order, which you then sign in your own wallet. Its funding route also builds the USDC.e approval, the pUSD wrap and the exchange approval as unsigned transactions for you to review and sign. The same integration reaches 15+ other venues.

Frequently Asked Questions