Bank of America Business Advantage Unlimited review

Best for

The Business Advantage Unlimited is the right card specifically for businesses that already keep operating cash, treasury reserves or Merrill brokerage assets at Bank of America. At the Platinum Honors Preferred Rewards tier ($100,000+ in combined balances) the 1.5% base rate gets a 75% bonus, lifting the effective earn rate to 2.62% on every purchase — higher than any other no-fee flat-rate card on the market. For owners outside that ecosystem the card is a perfectly competent 1.5% option but no longer a standout.

Not for

Businesses without significant balances at BoA or Merrill should look at the no-fee Chase Ink Business Unlimited instead — same 1.5%, same 0% intro length, and a more developed transfer-partner ecosystem if you ever pair it with an Ink Preferred. International spenders should also avoid the BoA card; the 3% FX fee fully erases the flat 1.5% on overseas purchases.

Rewards math: the Preferred Rewards multiplier

At the base 1.5% rate, $50,000 of annual spend earns $750 — a clean no-fee return. At the Preferred Rewards Platinum tier ($50k–$100k in BoA balances), the 50% bonus lifts that to $1,125. At Platinum Honors ($100k+), the 75% bonus pushes the effective rate to 2.625% and the same $50,000 of spend earns $1,312. That's roughly $560 a year of free upside available only to clients already keeping money in BoA's ecosystem — the card essentially pays you for your existing relationship.

Personal guarantee — what you're signing

The Business Advantage Unlimited requires a personal guarantee. BoA pulls the owner's personal credit at application and can pursue you individually for unpaid business balances. The card itself does not generally report on-time activity to your personal credit file, but charge-offs and severely delinquent accounts will. The structural truth is that virtually every small-business card sold to LLCs and sole props in the U.S. requires a personal guarantee — Chase, Amex, Capital One, Wells Fargo, BoA. The only mainstream alternatives are Brex and Ramp, which underwrite to the business's bank balance but require around $50k–$100k of cash on hand. We are not a card issuer; final approval, terms and rate decisions are made by Bank of America, N.A.

How Preferred Rewards for Business works

Enrollment is automatic for businesses with at least $20,000 in three-month average combined balances across BoA business checking and Merrill business investing accounts. Tiers are Gold (25% rewards bonus), Platinum (50%), Platinum Honors (75%) and Diamond/Diamond Honors at higher thresholds. Balances are evaluated quarterly, so a temporary dip below threshold won't immediately knock you down a tier — but a sustained drop will. Treasury, money-market and brokerage balances all count, which makes the program more reachable than its headline numbers suggest.

BoA Business Advantage Unlimited vs. closest competitor

The closest cross-shop is the Chase Ink Business Unlimited, also no-fee, also 1.5% flat, also with a 0% intro APR. Ink Unlimited's intro APR is longer (12 months vs. 9), and its rewards plug into the broader Ultimate Rewards ecosystem if you eventually pair it with an Ink Preferred. The BoA card wins decisively if and only if you already qualify for Preferred Rewards; below that threshold the Chase product is the cleaner choice.