Costs & Pricing

Metric	Spark Cash Plus	Business Advantage Unlimited Cash Rewards
Annual fee	$150 ($150 statement credit if ≥ $150,000 net purchases by membership anniversary)	$0
Employee card fee	$0 (free employee and virtual cards)	$0 (no published cap on number)
Purchase APR	Not printed as revolving purchase APR; Pay Over Time variable APR ~25.74% (review sites, mid-2026) if balance carried	16.74%–26.74% variable after intro (creditworthiness-based)
Intro APR (purchases)	Not offered	0% for 7 billing cycles, then 16.74%–26.74% variable
Foreign transaction fee	$0	3%
Late payment fee	2.99% late fee if minimum payment not paid by due date	Not disclosed on public product pages

Rewards & Value

Metric	Spark Cash Plus	Business Advantage Unlimited Cash Rewards
Base earn rate	Unlimited 2% cash back on net purchases (no category caps)	1.50% unlimited on all Net Purchases (no category cap)
Welcome bonus	$2,000 cash after $30,000 spend in first 3 months; +$2,000 for every $500,000 in year one (repeatable)	$500 cash rewards after at least $5,000 in purchases in the first 90 days (live public online offer, 3 Sep 2026)
Redemption value	1¢ per 1¢ cash back on statement credit/check	1¢ per 1% (cash is cash). No travel portal, no transfer partners.
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

Credit & Eligibility

Metric	Spark Cash Plus	Business Advantage Unlimited Cash Rewards
Personal guarantee	Required in practice (issuer-typical for Cap One business cards; not quoted on product page)	Required in substance — cards are backed by personal credit
Credit check	Hard pull on submit; pre-approval advertised as no impact to personal credit	Hard personal pull on applying owner/authorized officer
Employee cards	Free; spend limits, lock/unlock, account manager role; primary remains liable	Free; no published numeric cap; employee-transaction monitoring
Product type	Hybrid charge card / NPSL business card (designed pay-in-full; Pay Over Time optional)	Revolving small-business credit card

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

Business Advantage Unlimited Cash Rewards

Pros

• $0 annual fee and $0 employee-card fees
• Uncapped 1.5% on all Net Purchases; PRFB can take it to 1.87%/2.25%/2.62%
• Live $500 / $5,000 / 90-day bonus and 0% purchase APR for 7 billing cycles
• No category tracking, no $50k bonus cap
• In good standing, issuer says the card stays off personal credit reports

Cons

• 3% foreign-transaction fee
• 2.62% requires business checking and $100k combined BofA/Merrill balances
• Personal-credit underwriting and personal liability
• Intro APR is short and purchases-only; 5% BT fee with no 0% BT
• No transfer partners, lounge, or TSA credits; 1.5% trails 2% flats without PRFB

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.

Business Advantage Unlimited Cash Rewards

Unlimited is the simple SKU in the Business Advantage cash pair — 1.5% with no cap, or up to 2.62% if Preferred Rewards for Business Platinum Honors is real for you. It is not Customized (3%/2%/1% with a $50k cap). Without PRFB it is a fine no-fee 1.5% card that loses to Ink Unlimited's bonus and Spark Select's longer 0% window. With PRFB it becomes one of the better uncapped cash rates in the set. Skip it for foreign spend or no-PG underwriting.