What currency does Polymarket trade in?

Polymarket's documentation says all trading uses pUSD (Polymarket USD), an ERC-20 token on Polygon backed by USDC, with the backing enforced by smart contracts. Day to day you load funds, see a balance, trade and withdraw. Deposits from other chains are bridged and converted to pUSD automatically.

How can I fund a Kalshi account?

Kalshi's help center lists debit card (including Apple Pay and Google Pay), bank transfer (ACH), PayPal, Venmo, Cash App (deposits only), crypto and wire transfer. The minimum deposit is $10, except wire transfers, which have a $1,000 minimum. International users can deposit by debit card, crypto and wire transfer.

Can I move money straight from Kalshi to Polymarket?

The documentation describes each platform's own deposit and withdrawal routes, not a direct transfer between them. In practice you withdraw from one platform to a bank, card or wallet you control and deposit from there, and each step has its own timing, holds and fees. Check the current terms for your location first.

Funding Kalshi and Polymarket for Arbitrage

An arbitrage needs cash on both platforms at the same time, and cash cannot always be moved when you want it. This article summarises what Kalshi's help center and Polymarket's documentation say about funding, holds and withdrawals, and what that means for how you split capital between the two. Availability, fees and limits depend on your country and change over time, so treat this as a map and read the current pages before you move money. It is not tax, legal or financial advice; see whether it is legal where you live first.

Kalshi: methods, minimums and holds

Kalshi's Transfers FAQ lists these ways to move funds: debit card (including Apple Pay and Google Pay), bank transfer (ACH), PayPal, Venmo, Cash App (deposits only), crypto and wire transfer. International users can deposit by debit card, crypto and wire transfer, and withdraw by debit card and crypto.

Minimums: $10 for deposits, except wire transfers, which have a $1,000 minimum.
Bank (ACH) deposits: no fee, and the transfer typically settles within 5 business days. Kalshi may credit part of the deposit immediately so you can start trading. If you spend funds that later fail to settle, the account can show a negative balance.
Debit card deposits: usually credited instantly, according to the help center.
Wire deposits: no fee, no withdrawal hold, and the wire needs your Kalshi memo code and a matching account name. Wires received before 4 pm Eastern are typically attributed the same day.
Debit card withdrawals: no fee, and funds typically arrive within a few hours, though they may be temporarily unavailable during a payment-processor compliance review of 3 to 5 business days.

Kalshi's Security Holds page sets withdrawal holds by deposit method. For card and bank deposits, withdrawing to the same method is available once the deposit settles, and to a different method up to 2 days after settlement. PayPal or Venmo, crypto and wire deposits have no hold. Withdrawing by crypto requires a prior crypto deposit.

Polymarket: pUSD on Polygon

Polymarket's documentation says all trading uses pUSD, an ERC-20 token on Polygon backed by USDC. Its deposit page says assets sent from Ethereum, Solana, Bitcoin and other chains are bridged and converted to pUSD automatically, using bridge addresses linked to your wallet.

For withdrawals, the docs say pUSD is unwrapped to USDC and swapped through a Uniswap v3 pool, and that the interface enforces less than a 10 basis point difference in output. The same page warns that the pool can at times be exhausted, in which case you can split the withdrawal into smaller amounts, wait for it to rebalance, or withdraw pUSD directly (some exchanges no longer accept pUSD deposits). For very large withdrawals, over $50,000, it suggests breaking them up.

What this means for splitting capital

The slow route is the bottleneck. A bank deposit that settles in days cannot rebalance a trade that closes in hours. Hold more on each side than one trade needs.
Conversion costs are real. A swap of up to 10 basis points is 0.1%, which matters when a typical net edge is under 1%. Add it to your net edge calculation when you move money between the two.
Winners pile up on one side. After settlement, cash is wherever the winning leg was. Over time one platform can run low, so plan how and when to rebalance.
Idle cash earns nothing. Money parked on a platform for rebalancing is not working. See how long capital is tied up.
Check names and addresses. Both platforms care about account names (wires) and wallet addresses (crypto). A transfer to the wrong address or from a mismatched name can be delayed or returned.

Where Arbitrage Agent fits

Arbitrage Agent never holds your money: you fund your own accounts on each platform and place the orders yourself, guided step by step. It shows each pair's net edge after fees and depth in a live feed. See the plans or start with the Starter plan.

Key terms: Non-Custodial · Slippage · Spread

Funding Both Sides: Deposits and Withdrawals Between Kalshi and Polymarket for Arbitrage

Kalshi: methods, minimums and holds

Polymarket: pUSD on Polygon

What this means for splitting capital

Where Arbitrage Agent fits

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