I just got approved for the biz card, after calling in and confirming my dob. however the credit line is only $1,000. Presumably I can achieve the minimum spend by paying off the balance every couple of weeks, then using the card again, rather than cutting everything too fine by spending exactly $1,000 every 30/31 day billing cycle.
My fico is mid 700's but I only make $28k per annum from my biz, plus $47k from other sources. I do have 8 credit cards with about 90k credit available, with very small balances. Presumably the low biz income of $28k was the reason I got such a low credit line.