Starter accounts typically require only your EIN, while Tier 1 vendors also require 30–90 days in business. Many of these vendors will also charge an annual fee. Tier 2 vendors require 90–180+ days and may review your Dun & Bradstreet or Experian Business file. If you have limited credit history, store cards like Home Depot may request a personal guarantee (PG). Tier 3 vendors that offer higher limits or specialized inventory typically require proof of steady monthly revenue, and may ask for a personal guarantee or a soft credit check.