You’re able to link your Found account to your Square account, and then transfer funds between those two accounts.
Here’s how to link Found to Square:
In your Square app, click the icon at the top left of the screen
Go to Settings > Account & Settings > Bank Accounts > Add Bank Account in your online Square Dashboard. If you are changing your bank account, select Change Bank Account.
Enter you Found bank account information. You can find your account and routing number by navigating to Business Account in your Found app. Be sure to select Business Checking as your account type.
For security purposes you will be asked to enter your Square account password, and Square will send you an email verification to confirm this action.
Unfortunately, due to the way that Found's invoices feature interacts with Square for credit and debit card payments, it is not possible to link an existing Square account to Found for processing these payments. You will need to create a new connected Square account from invoices to use this feature.