Amex Blue Business Cash vs Bank of America Business Advantage Unlimited Cash Rewards: Which Is Better?
A higher rate that caps at $50,000 a year versus a lower rate that never caps at all. Six rounds. Real numbers. One honest scorecard.
The verdict
Amex Blue Business Cash takes it, 4–2 on rounds.
There's no universal winner — Blue Business Cash pays more below its cap for most businesses, Business Advantage Unlimited Cash Rewards pays more forever if you bank with BofA, so match the card to your balance and banking relationship.
Choose Amex Blue Business Cash if…
- • You spend under $50,000/year and don't bank with Bank of America
- • You want deeper everyday-purchase protections like purchase protection and extended warranty
Choose BofA Business Advantage Unlimited Cash Rewards if…
- • You already keep $20,000+ in combined BofA/Merrill balances
- • You want cash back that never caps or expires, no matter how large you grow
Round by round
- Round 1Welcome BonusBofA Business Advantage Unlimited Cash Rewards winsAmex Blue Business Cash6/10
$250 (up to $500 targeted)
Public offer modest; higher offers not guaranteed
- Achievable $3,000 spend bar in 3 months
- Modest bonus compared to points-earning competitors' opening offers
Source: Amex Blue Business Cash dossier
BofA Business Advantage Unlimited Cash Rewards8/10$500
Guaranteed offer for every applicant, no targeting needed
- Bigger and guaranteed, unlike Amex's public offer
- Bonus terms subject to change — verify current offer before applying
Source: BofA Business Advantage Unlimited Cash Rewards dossier
So this round goes to BofA Business Advantage Unlimited Cash Rewards.
- Round 2Everyday Rewards Rate & CapsAmex Blue Business Cash winsAmex Blue Business Cash8/10
2% (capped)
Beats BofA's flat rate for the typical business under $50K/yr
- Automatically applied cash back, no enrollment required
- Drops to 1% once the $50,000 cap is hit
Source: Amex Blue Business Cash dossier
BofA Business Advantage Unlimited Cash Rewards5/101.5% uncapped
No cap, no categories, no expiration on rewards
- Rate never quietly downgrades
- Base 1.5% is below many no-fee competitors' 2% flat rate
Source: BofA Business Advantage Unlimited Cash Rewards dossier
This round goes to Amex Blue Business Cash.
- Round 3Relationship Bonus vs Fixed RateBofA Business Advantage Unlimited Cash Rewards winsAmex Blue Business Cash4/10
Fixed 2%
No upside lever at all, regardless of banking relationship
- Predictable flat rate, no balances or tiers to track
- No way to exceed the flat rate, ever
Source: Amex Blue Business Cash dossier
BofA Business Advantage Unlimited Cash Rewards7/10Up to 2.62%
Preferred Rewards for Business tier bonus on qualifying balances
- Real path to beat Amex's flat 2% entirely
- Unreachable without an existing BofA/Merrill relationship
Source: BofA Business Advantage Unlimited Cash Rewards dossier
So this round goes to Amex Blue Business Cash, for pure simplicity.
- Round 4Perks & ProtectionsAmex Blue Business Cash winsAmex Blue Business Cash7/10
4+ everyday-purchase perks
Purchase protection, extended warranty, Expanded Buying Power
- Purchase protection covers accidental damage or theft
- No travel credits or lounge access, unlike premium travel cards
Source: Amex Blue Business Cash dossier
BofA Business Advantage Unlimited Cash Rewards4/10Minimal perk set beyond employee cards
- Free employee/additional cards included
- No purchase protection or extended warranty offered
So this round goes to Amex Blue Business Cash.
- Round 5Foreign Transaction Fees & Intro APRAmex Blue Business Cash winsAmex Blue Business Cash8/10
2.7% FTF / 12mo 0%
Lower fee, longer interest-free window than BofA
- Full 12-month 0% intro APR window
- 2.7% foreign transaction fee still applies to international purchases
Source: Amex Blue Business Cash dossier
BofA Business Advantage Unlimited Cash Rewards4/103% FTF / 7 cycles 0%
Higher fee, shorter interest-free window than Amex
- Still offers 0% intro APR, just for a shorter 7-cycle window
- Loses on both the foreign fee and the intro APR length
Source: BofA Business Advantage Unlimited Cash Rewards dossier
This round goes to Amex Blue Business Cash.
- Round 6Credit Needed & Who It FitsAmex Blue Business Cash winsAmex Blue Business Cash8/10
Good to excellent
Full value available to any qualifying business
- No banking relationship or balance requirement needed
- Doesn't reward businesses that already bank with Bank of America
Source: Amex Blue Business Cash dossier
BofA Business Advantage Unlimited Cash Rewards5/10~750+
Best value reserved for existing BofA/Merrill customers
- Ideal fit for existing BofA/Merrill business banking customers
- Higher recommended credit score than Amex
Source: BofA Business Advantage Unlimited Cash Rewards dossier
This round goes to Amex Blue Business Cash.
Which one is for you?
Small business spending under $50,000/year without a BofA relationship
→ Amex Blue Business Cash · Higher flat rate, no balance requirement to unlock it
Business that wants deep everyday-purchase protections
→ Amex Blue Business Cash · Purchase protection and extended warranty BofA's card lacks
Existing BofA or Merrill client with $20K+ combined balances
→ BofA Business Advantage Unlimited Cash Rewards · Preferred Rewards for Business can push the rate to 2.62%
Business that wants cash back that never caps or expires
→ BofA Business Advantage Unlimited Cash Rewards · Flat 1.5% forever, no annual cap unlike Amex's $50K ceiling
Side by side
- Zero-risk value from the first purchase
- Achievable spend bar for most applicants
- Automatically applied, no enrollment or categories to track
- Can carry a balance interest-free for a year
- Cash back never expires
- Paid as real cash, not points
- Simplest possible structure
- 25%-75% boost tiers start at just $20K combined balance
- No high-spend fee-refund mechanism the way Spark Cash Plus offers
- Modest $250 bonus compared to Spark Cash Plus's $2,000
- Rate silently halves once the cap is hit
- Fixed credit line, unlike Spark Cash Plus's no-preset-spending-limit
- 3% foreign transaction fee applies
- Offer terms subject to change — verify before applying
- Below top flat-rate competitors (many offer 2%)
- Top tier unreachable for most small businesses