When you set up this rule, you can exclude purchases over a certain amount. That way, if you use your credit card for an unusually large expense or an emergency, that amount won’t be transferred from your bank account. You can also adjust the percentage of each purchase you’d like to save.
You’re also protected by our automatic fail-safe mechanism, which means we won’t complete a transfer from your bank account if that transfer would leave you with less than $100. This mechanism isn’t foolproof and there are notable exceptions. You can learn more about it here.