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Theta Labs uses embedded wallets — one on Polygon (EVM) and one on Solana — to hold your funds. Depositing means sending USDC to one of these wallet addresses. Withdrawing moves funds from a connected exchange (Polymarket or Kalshi) back to your wallet. You can find the Deposit, Withdraw, and Transfer buttons at the top of your Portfolio page.
Always verify the asset and network before sending. Sending the wrong asset (for example, USDC instead of USDC.e on Polygon, or a non-USDC token) or sending to the wrong network will result in permanently lost funds. Theta Labs cannot recover funds sent to incorrect addresses.

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Depositing to Theta Labs (Polygon)

Use this to fund your Theta Labs wallet for Polymarket trades.
1

Open the Deposit modal

Click Deposit on your Portfolio page. The modal displays your EVM wallet address (a 0x… address on Polygon).
2

Copy your wallet address

Copy your EVM wallet address from the modal. You can also scan the QR code if your sending wallet supports it.
3

Send USDC.e on Polygon

From your external wallet or exchange, send USDC.e (bridged USDC) to your address on the Polygon network. Native USDC on Polygon is also accepted.
4

Wait for confirmation

Polygon transactions typically confirm within a few seconds, but it may take a few minutes for your balance to appear on the Portfolio page. Refresh if needed.

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Depositing for Kalshi (Solana)

Use this to fund your Kalshi account.
1

Open the Deposit modal

Click Deposit on your Portfolio page. Switch to the Solana tab to see your Solana wallet address (a base58 address starting with a random character).
2

Copy your Solana address

Copy your Solana wallet address from the modal.
3

Send USDC on Solana

From your external wallet or exchange (such as Coinbase or Kraken), send USDC to your address on the Solana network. Only USDC (not USDT or other stablecoins) is accepted.
4

Wait for confirmation

Solana transactions confirm quickly, but allow a few minutes for your balance to update in the Portfolio page.

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Transferring between platforms

The Transfer button moves USDC between your Polymarket account and your Theta Labs EVM wallet. Use this when you want to shift capital between platforms without an external withdrawal.
  • Theta Labs → Polymarket: Move USDC from your Polygon wallet into your Polymarket trading account so you can place bets there.
  • Polymarket → Theta Labs: Pull funds from your Polymarket account back to your Theta Labs wallet.
Transfers operate on Polygon and settle within minutes.

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Supported assets

AccountAccepted assetNetwork
Theta Labs walletUSDC.e (bridged USDC) or USDCPolygon
PolymarketUSDC.ePolygon
KalshiUSDCSolana
USDC.e and USDC are both stablecoins pegged to $1, but they are different tokens on Polygon. Polymarket uses USDC.e (the bridged version). Sending native USDC to a Polymarket address, or USDC.e to a Solana address, will not work correctly.