AMEX’s new Business Cash card has an incognito offer where it will pay $250 after $5000 spent in 6 months and $250 after an additional $10000 spent in 12 months. It also pays 2% cash back. So on $15,000 total spend you’d earn 5.33% cashback. That’s a pretty good deal especially considering your vendors are all likely non-bonus categories. If you think you’ll spend more than $15k on credit cards your finance could always get one and double it to $30k.