Thrifty Traveler compares the benefits of Chase's Ink Business Cash and Ink Business Unlimited cards, highlighting differences in rewards, spending categories, and welcome bonuses. One Mile At A Time adds that the Ink Business Cash offers higher rewards in certain categories like office supply stores and internet, cable, and phone services, while the Ink Business Unlimited provides a flat rate cash back on all purchases. Both cards come with a solid welcome bonus and no annual fee, catering to different business spending preferences. When choosing between the two, consider your spending habits and which rewards structure aligns best with your business needs.