Spark Cash Plus: The basicsThe Spark Cash Plus is a business charge card that earns unlimited 2% cash back on all purchases. Capital One Spark Cash Plus vs. Capital One Spark CashIf you prefer a traditional business credit card, consider the Capital One Spark Cash. If you're focused on earning cash rewards and value a simple earning structure, the Spark Cash Plus is an excellent option. Related: Your guide to the Chase Ink Business credit cardsBottom lineThe Spark Cash Plus is one of the simplest business cash-back cards on the market. Learn more: Capital One Spark Cash PlusFor rates and fees of the Amex Blue Business Cash, click here.