I currently own a single credit card and am considering applying for additional cards based on their signup bonuses. (e.g. Amazon Rewards $70 cash bonus, Best Buy 5% cash back, etc. This is in addition to the benefits outlined in What are the reasons to get more than one credit card?

Ideally my plan would be to sign up for these credit cards, track my combined credit using a service like Mint, and set up auto-pay for my bills to avoid any possible late fees.

I know that credit card companies need to make profit somehow and that these rewards are specifically designed to entice financial novices like myself.

Are there any hidden drawbacks to signing up for multiple credit cards for their signup bonuses and reward programs?

  • Your credit score will fluctuate a bit when you open/close new accounts. But if you have good credit, not much of a concern. I say go for it, and have been guilty of doing the same (had a trip planned to Hawaii, opened up a Hawaiian Airlines credit card just to get the sign-up bonus and a free ticket!)
    – Rocky
    Commented Jun 26, 2017 at 21:22
  • You're listing vendor specific cards that only give good rewards when used at their businesses. I don't recommend going that route. Look for a standard card with things like 2% cash back on all purchases.
    – BobbyScon
    Commented Jun 26, 2017 at 21:24
  • 1
    @BobbyScon - if the card has no fee, there's no harm in having a card for each store if the reward is say, 5%. I spend a few thousand a year at Amazon. 5% is $100 more than my 2% card would give me. $100 won't change my life, but it all adds up. Target, TJMax, Best Buy, Barnes and Noble, etc... the store cards just save you a bit where you shop anyway. Commented Jun 26, 2017 at 21:32
  • @JoeTaxpayer - very true, if you're good at managing all of those cards. If you don't pay them off in full each month, you'll pay more in interest than the rewards give you. My comment was more a recommendation for those with little to no credit history just getting started in getting themselves set up for success.
    – BobbyScon
    Commented Jun 26, 2017 at 21:35
  • Understood. I am 54 and retired. A younger, busy person needs to know this requires time to manage. A single card offers simplicity. Multiple cards need managing. Commented Jun 26, 2017 at 21:37

2 Answers 2


Having many cards in and of itself does not affect your credit score, what matters is how much they are used and how old they are. So there could be secondary consequences for having multiple cards to your credit score.

I would say the biggest drawback is the increased risk of screwing something up. Some possible risks include:

  • Failing to make a timely payment, causing late fees and interest charges
  • Forgetting which card has what limit, risking overcharging
  • Losing control of financial situation - it's harder to know exactly what your debt level is if they're spread over multiple cards.
  • Increase incentive to spend - if you feel like you need to use many cards to earn points/rewards you are tempted to spend more, possibly negating any benefit gained.

Setting aside the "debt is evil" argument, the downside is mostly the short term hit to your score. A credit inquiry stays on your report for 2 years, after that, it's gone. Ideally, you would have cards that offer the largest reward for each category of purchase. For the fact that I like Amazon's ease of use, and decent prices, the 5% back card is just a bonus. In effect, it gives my free prime membership.

In the end, if your time and effort is worth it, just use common sense, and pace yourself. With all the ways to track your score, it's not tough to see if you are pushing your luck, getting too many cards. If so, just slow down.

I'm addressing more your specific desire to play the reward game. For the average person, a 2% cash back card might be all they need. But if you look at that and then look at your budget, you might think that one card is less than ideal. You've entered the world of multiple credit cards and deal chasing. The 5% back card at every store you frequent is 3% more than I get at those stores. The truth is, just like the extreme coupon crowd, as long as you know what you are doing, always pay in full, and never spend more than you were planning, you will be at an advantage.

5+ years back, I was offered a card that for the first 90 days gave 10% back at drug stores. Of course, the first thing I did was to drop $50K at CVS and buy 100 x $500 Visa gift cards. That was $5000 cash back to me less the $500 in fees ($5 per card). Responses were mixed. Many were convinced that this would result in wasteful spending. Others said this stunt wasn't worth the time. I maintained that a $4500 (tax free) profit can be converted into 'hours worked', and for the median earner, it was 200 hours, and then some. In the end, it's up to you whether this pursuit is worth it.


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