Log in to your Bank of America account
Check for any card controls, merchant restrictions, or online purchase blocks
Enable online, card-not-present, and international transactions if they are disabled
Add Kalshi as a trusted merchant if your account offers that option
Review and remove any fraud alerts or temporary security holds
Contact Bank of America customer service and ask them to allow transactions with Kalshi
Ask whether Kalshi is being blocked as a gambling, investment, or restricted merchant
If needed, use a different payment method that Bank of America supports
Retry the transaction after the restriction is removed
Confirm the charge with Bank of America if a verification request appears