You will need to connect both a card and a bank account.

Why a credit / debit card?

The round up campaign monitors your cards' transactions and calculates the donation amount accordingly. The campaign does not pull the donation from your credit card because the credit card fees will significantly diminish your charitable impact.

Why a bank account?

Instead, your donations are grouped together once a week and transferred from your bank account to minimize fees. This process is the same process used by payment apps like Venmo.