Most small business owners don't realize that used correctly, a business credit card can function as an interest-free 30-day loan. The key is understanding your grace period—and it could save you hundreds of dollars a year. This one-minute explainer breaks down how interest actually works on a business credit card: what the grace period is, why paying your full balance on time means paying $0 in interest, and what happens when you don't. It also covers the fees that catch business owners off guard (late payments, cash advances, foreign transaction charges) and the three simple habits that keep your card working for your business, not against it. Key takeaways: • Most business credit cards include a grace period between posted transactions and your payment due date • Pay your full balance by the due date and interest does not apply to your purchases • Carrying a $5,000 balance for 60 days at a 24% APR costs approximately $197 in interest charges • Late fees, cash advance fees, and foreign transaction fees are largely avoidable if you know when they trigger • Three habits eliminate most interest costs: know your grace period, pay your full balance on time, and skip cash advances #Intuit

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