Costs & Pricing

Metric	Spark Cash Plus	Blue Business Cash® Card
Annual fee	$150 ($150 statement credit if ≥ $150,000 net purchases by membership anniversary)	$0 (no annual fee, ever)
Employee card fee	$0 (free employee and virtual cards)	$0 (up to 99 Employee Cards)
Purchase APR	Not printed as revolving purchase APR; Pay Over Time variable APR ~25.74% (review sites, mid-2026) if balance carried	16.74%–28.49% variable (Prime + 9.99% to +21.74%; cap 29.99%)
Intro APR (purchases)	Not offered	0% for 12 months from account opening, then variable purchase APR
Foreign transaction fee	$0	2.7% of each transaction after conversion to USD
Late payment fee	2.99% late fee if minimum payment not paid by due date	Up to $39 (cannot exceed Minimum Payment Due)

Rewards & Value

Metric	Spark Cash Plus	Blue Business Cash® Card
Base earn rate	Unlimited 2% cash back on net purchases (no category caps)	2% cash back on first $50,000 eligible purchases per calendar year; 1% thereafter
Welcome bonus	$2,000 cash after $30,000 spend in first 3 months; +$2,000 for every $500,000 in year one (repeatable)	$250 statement credit after $3,000 eligible purchases in first 3 months (standard public offer)
Redemption value	1¢ per 1¢ cash back on statement credit/check	Automatic statement credit — 1¢ per 1% of eligible spend (2% = 2¢ per $1 under cap)
Transfer partners	No native transfer partners; cash may convert to Capital One miles ($1 = 100 miles) if linked to miles-earning Cap One card	None — cash back only, not a points bank

Credit & Eligibility

Metric	Spark Cash Plus	Blue Business Cash® Card
Personal guarantee	Required in practice (issuer-typical for Cap One business cards; not quoted on product page)	Required — joint and several liability of Basic Card Member and Company (CMA)
Credit check	Hard pull on submit; pre-approval advertised as no impact to personal credit	No personal-score impact to learn if approved; may impact personal credit if applicant accepts the card
Employee cards	Free; spend limits, lock/unlock, account manager role; primary remains liable	Up to 99 Employee Cards, $0 AF; spend limits and merchant-type alerts
Product type	Hybrid charge card / NPSL business card (designed pay-in-full; Pay Over Time optional)	Revolving business credit card with stated credit limit and Expanded Buying Power

Pros & Cons

Spark Cash Plus

Pros

• Uncapped 2% cash back on all net purchases
• NPSL capacity plus free employee and virtual cards
• $150 annual fee refunded at $150,000 net spend by anniversary
• Large year-1 bonuses — $2,000 at $30k/3 mo plus $2,000 per $500k spent
• $0 foreign transaction fee; 5% on Capital One Business Travel hotels/VR/cars

Cons

• $150 fee is real if spend stays below $150k/year
• Pay-in-full design — 2.99% late fee and Pay Over Time interest if you carry
• Bonus hurdles favor very high spenders ($30k/3 mo, $500k increments)
• No 0% intro APR and no balance transfers
• Bonus often blocked for existing/previous Capital One Business cardholders

Blue Business Cash® Card

Pros

• $0 annual fee on primary and up to 99 Employee Cards
• 2% automatic cash back on first $50,000 calendar-year eligible spend
• 12-month 0% intro APR on purchases
• Expanded Buying Power — no overlimit fee; rewards earn above limit if approved
• Purchase Protection and Extended Warranty included

Cons

• 2% earn ends at $50k; incremental spend drops to 1%
• 2.7% foreign transaction fee
• Joint-and-several personal liability of Basic Card Member
• Modest standard welcome bonus ($250 / $3k / 3 months) vs many competitors
• Over-limit balances due in full; missed Closing Date can trigger Penalty APR on entire balance

Verdict

Spark Cash Plus

Capital One Spark Cash Plus is the go-to for businesses with serious spend who can pay in full. Uncapped 2%, NPSL flexibility, free employee/virtual cards, and a refundable $150 fee at $150k make it a premium flat-rate engine — especially with the live $2,000 welcome bonus and limited $500 travel credit (through Sep 7, 2026). Poor fit for 0% financing seekers, lounge hunters, or businesses under $150k annual card spend.

Blue Business Cash® Card

The Blue Business Cash Card is Amex's no-fee workhorse for modest spenders — 2% automatic cash back up to $50k, then 1%, paired with a 12-month 0% intro APR and Expanded Buying Power. It beats uncapped 1.5% cards on the first $50k but loses incremental dollars to Spark Cash Plus or Ink Unlimited above that cap. Best for domestic sole props and small firms who won't chase category bonuses or transfer partners.