The Blue Business Plus card from American Express is an old favorite of ours. And shortly after coming out with a great welcome offer on the American Express ® Business Gold Card, American Express decided to surprise us again and came up with another incredible offer.

And don't forget, more people are often eligible for business cards than realize it.

Despite the fact that Marriott and the Starwood Preferred Guest programs are merging into one unified loyalty program on August 18, both Marriott and SPG credit cards will continue to be issued for the time being, by Chase and Amex respectively. Both banks have published new terms for all current (and future) Marriott-family credit cards that define who is and isn't eligible for sign up bonuses, as of August 26.
Why These New Rules are Different
Sign up bonus rules are not new to the miles and points community.

The Citi / AAdvantage Platinum Select MasterCard is now offering 60,000 bonus American Airlines miles after spending $3,000 in the first 3 months. We've seen this offer before on the personal card. Citi rotates in a out a couple times of year typically.

The CitiBusiness / AAdvantage Platinum Select World MasterCard is offering 70,000 bonus American Airlines miles after spending $4,000 on the card in the first three months.

The Citi ThankYou Premier Card is now offering 50,000 bonus ThankYou Points after $4,000 in purchases within the first 3 months of account opening. For the majority of 2016 the ThankYou Premier had no sign up bonus whatsoever, then Citi came back with 40k points for a $3k minimum spending requirement bonus in December 2016.