How many credit cards should you have, honestly.

The math on why 3 is often the sweet spot

Almost everyone has three dominant categories: one "general" bucket (Amazon, subscriptions, random purchases), one food bucket (dining and/or groceries), and one either travel or gas depending on lifestyle.

Three cards can perfectly cover this: a 2% flat card for everything else, one category card for the biggest food bucket, and one for travel or gas. Each incremental card past three delivers diminishing returns because you're capturing a smaller slice of your total spend.

The 2-card, 3-card, and 5-card setups

• 2 cards (simple): Wells Fargo Active Cash (2% flat, no fee) + Chase Sapphire Preferred (3x dining/groceries, 2x travel, transferable points). Covers most people well.
• 3 cards (optimized): Add Amex Gold on top of the above for 4x on dining/groceries. Use CSP for travel and transferable-to-Hyatt points. Active Cash catches the rest at 2%.
• 5 cards (hobbyist): Add a rotating-category card (Chase Freedom Flex or Discover it) plus a merchant-specific card (Costco Visa or Amazon Prime Visa) if you spend heavily at those merchants.

What NOT to do

Opening cards just because they're recommended without checking whether they beat your current setup for your specific spending. "Best card" lists are rarely best for you.

• Don't collect cards for their perks unless you'll use every perk you're paying for
• Don't chase sign-up bonuses on cards you won't organically use, chasing bonuses with forced spend cancels out the reward
• Don't add a 4th or 5th card without doing the math on whether it beats your existing wallet