Here are 8 mistakes to avoid if you want to get the Chase Sapphire Preferred while it has its 100,000-point welcome bonus before it ends on May 15.

New Sapphire Preferred cardholders have one last chance to earn 100,000 welcome bonus points after spending $5,000 on purchases in the first three months from account opening. This rare offer, which is worth up to $1,250 in travel redemptions, will officially end on May 15 at 9 AM ET.

It's been nearly four years since the Chase Sapphire Preferred® Card* last offered its 100k welcome bonus -- and next week it will disappear again. Until May 15, the Sapphire Preferred os offering 100,