Update: Some offers mentioned below are no longer available. View the current offers here.Now through January 31, 2014, if you have a Chase Sapphire Preferred or Freedom card (No longer open to new applicants) and refer a friend for the same card you have, you can earn a 5,000-point bonus.Here is the Sapphire Preferred referral site, and here is the Freedom referral site.You can earn up to a total of 50,000 bonus points for 5 referrals. To qualify, your referrals must take place by January 31, 2014, and then the people you refer just need to apply for the card and use it by May 31, 2014 in order for it to count.If you read my site, you know that Chase Ultimate Rewards points, which you earn with both of these cards, are some of my favorite because of the program’s great travel transfer partners including United, Southwest, British Airways, Hyatt, Marriott and more. The Sapphire Preferred is my go-to personal travel credit card because of great features like earning 2X points on travel and dining, a 7% annual points dividend, and no foreign transaction fees.Although the Freedom is a more basic card, it’s still a great product that I carry myself because it earns 5X points at a quarterly rotating roster of merchants up to $1,500 per quarter ($6,000 per year), plus it gives cardholders a 10% points dividend on all points, including bonus ones, so you can use it to really start raking in the points.Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.In short, I highly recommend both cards, so refer as many friends and family as you can so you can earn the full 50,000-point bonus while this goes on - and then send them here to learn how to maximize their new credit cards! I’ll include a list of relevant posts below.Sapphire PreferredDetails on the Sapphire Preferred 2X on TravelThe Sapphire Preferred 7% Annual DividendRanking the Chase Ultimate Rewards Transfer PartnersTop 10 Ways To Maximize Each Ultimate Rewards Transfer PartnerWhy I Love Chase Ultimate RewardsRanking the Top Chase Travel Credit Card OffersFreedomThe Freedom 5X Spending Categories - Register For Q4Chase Freedom 10% Points Bonus DetailsMaximizing Chase Ultimate Rewards With the Ink/Sapphire Preferred/Freedom Combination