In the past, I used a USBank based service for small businesses. Low rates, API to get purchases, and fairly easy to get/qualify for. Assign credit limits per

In the past, I used a USBank based service for small businesses. Low rates, API to get purchases, and fairly easy to get/qualify for. Assign credit limits per-employee and per category (so, for example, Maintenance Guy A can't purchase any food/beverages, but, can buy stuff at Grainger/home improvement stores, and has a limit of $500 per transaction, but a total credit limit of $5,000).