Keep it separate. That new backpack for your kids isn’t a business expense, but your business credit card was handy so you used it. Sure, you can pay back your business for a personal expenditure, or the other way around, but if you’re going to do it right you actually have to record an accounting transaction.
Things get complicated fast, and you don’t need that headache. By keeping separate bank and credit card accounts for business and personal, you’ll save yourself hours of work and make it easy to keep track of deductible expenses in one place.
Some applications can automatically handle the behind-the-scenes accounting for crossover expenses, but even so, we recommend handling business and personal finances as independently as possible.