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To close a prediction-market account, first settle or close open positions, cancel any required open orders, and withdraw the available balance using that platform’s supported method. Then follow its account settings process. Polymarket calls this deletion; Kalshi calls it deactivation. Neither process guarantees that every record disappears.
Before you close the account
Account closure, withdrawing money, and removing access are separate steps. Check the platform’s current instructions and your account’s restrictions before starting: open positions may need to be closed, orders canceled, and the balance brought to zero before closure is allowed.
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- Review positions: Close or sell open positions if the platform requires it. Leaving them open may block closure and keeps you exposed to the market outcome.
- Cancel resting orders: Cancel orders that have not yet filled when required.
- Withdraw funds: Confirm the available withdrawal method, destination details, eligibility, verification requirements, fees, and timing before submitting a request.
- Save any information you need: Do not assume account closure will erase transaction history or records the platform is required to retain.
How to delete a Polymarket account
Polymarket’s Help Center article dated June 25, 2026, says to close all open positions and withdraw all funds from the Polymarket wallet before deleting the account. Once those steps are complete, use the deletion option in Settings. See Polymarket’s account-deletion instructions.
Withdraw from Polymarket first
Polymarket’s withdrawal instructions, dated January 12, 2026, give this path: open Portfolio, choose Withdraw, enter the recipient address, select the token, amount, and network, then confirm. Processed funds are sent to the address you specify. See Polymarket’s withdrawal instructions.
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Check the recipient address, asset, and network carefully before confirming. The supported choices can depend on the transaction and account; do not assume a particular token or network is always available.
What deletion does—and does not—remove
Polymarket says profile and associated personal data are deleted in line with its Privacy Policy, but some data may be retained where law or regulation requires it. Public blockchain transactions cannot be removed by deleting the account: the Help Center states, “Your past transaction history will remain visible on-chain even after your account is removed.”
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How to deactivate a Kalshi account
Kalshi’s Help Center article dated August 13, 2026, requires you to close every open position, cancel every resting order, and withdraw Kalshi funds until the balance is $0 before deactivation. Then open Account & security in settings, scroll to Deactivate your account, and confirm. Kalshi says its representatives cannot deactivate an account manually for you. See Kalshi’s deactivation instructions.
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Choose a Kalshi withdrawal method
Kalshi lists separate withdrawal instructions for bank transfers, debit cards, crypto, PayPal, and Venmo. The available route and steps depend on the method and your account. Check the Kalshi deposits and withdrawals help collection for the current options that apply to you.
For crypto withdrawals, Kalshi’s article dated August 24, 2026, instructs users to open Transfers, choose Withdraw from Kalshi, select Crypto, and follow the on-screen steps to provide a wallet address and complete the transaction. The article says a prior crypto deposit is required, document verification may be required, and there is no crypto withdrawal fee. It gives 30 minutes as a typical arrival time, not a guarantee. The article distinguishes US processing through Zero Hash from a separate provider for international users; eligibility and availability can vary. See Kalshi’s crypto withdrawal instructions.
Understand the processing stage
Kalshi Rulebook v1.24 says Kalshi transmits a member’s withdrawal request to its Clearing House within one business day. That is a transmission step, not a promise that the funds will reach your bank or wallet within one business day. The rulebook also allows funds to be retained for unsatisfied obligations and says a withdrawal may be suspended or denied in specified circumstances, including legal or regulatory barriers or funds relevant to an investigation. Read the Kalshi Rulebook.
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If your goal is to stop trading temporarily, Kalshi documents voluntary self-exclusion for a selected term and points to SelfExclude.io for broader exclusions across participating platforms. Close open positions beforehand: Kalshi cautions that you cannot sell them during a self-exclusion period. Self-exclusion does not withdraw your funds or close your account. See Kalshi’s self-exclusion guidance.
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Polymarket and Kalshi closure requirements compared
| Platform | Clear before closure | Withdrawal and closure route | What remains |
|---|---|---|---|
| Polymarket | Close all open positions and withdraw all wallet funds. | Portfolio > Withdraw; then delete through Settings. | Past on-chain transactions remain publicly visible. Some personal data may be retained where law or regulation requires. |
| Kalshi | Close every open position, cancel every resting order, and withdraw funds until the balance is $0. | Use an available withdrawal method; then Settings > Account & security > Deactivate your account. | Some personal information is retained for identity verification, compliance, and security; deactivation stops account access and trading. |
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