Costs & Pricing

Metric	The Business Platinum Card® from American Express	Fintech Platform Charge Cards
Annual fee	$895 (new accounts since 09/18/2025; existing accounts moved to $895 on first renewal on or after 12/02/2025). Refundable if closed within 30 days of the Closing Date the fee posted.	CATEGORY: Almost always $0 on public pages. EXAMPLE A Engine X: $0. EXAMPLE B Rho: $0. Adjacent Coast: platform fee $4 per active user / month (not a classic card AF).
Employee card fee	$400 each Additional Business Platinum Card; $0 each Additional Business Expense Card; max 99 additional cards. Legacy accounts opened before 09/18/2025 and not notified of the change may still be billed $350.	CATEGORY: Usually $0. EXAMPLE A: $0; unlimited physical + virtual (marketing). EXAMPLE B: $0; unlimited physical + virtual.
Purchase APR	Pay Over Time only: Prime + 10.99% to Prime + 21.74% (marketed 17.74%–28.49% variable); cap 29.99%. Does not apply to Pay In Full charges paid by the due date.	CATEGORY: Usually absent — charge products, no revolving purchase APR. Marketing “0%” is almost always charge-card float, not a 12–18 month 0% intro APR. EXAMPLE A: N/A / not published. EXAMPLE B: None (paid in full Daily or Monthly).
Intro APR (purchases)	Not offered	CATEGORY: Not offered as classic intro APR. EXAMPLE A: not offered. EXAMPLE B: Daily = next-day debit; Monthly ≈ 30-day float — not intro APR.
Foreign transaction fee	$0	CATEGORY: Often missing from marketing; live in ToS / bank addendum. EXAMPLE A: silent on product page as of 3 Sep 2026 — dedicated Engine X bio extracts Program Terms FTF $0 (prefer Program Terms / dedicated bio). EXAMPLE B Rho: CONFLICT — help center says no FTF; ToS §2.4 may charge up to 1% on foreign transactions; network conversion may still apply. ToS wins. Adjacent Coast: 2.5% after USD conversion.
Late payment fee	$39 or 2.99% of any past-due Pay In Full amount, whichever is greater	CATEGORY: Often not on marketing page. EXAMPLE A: not boxed on product page; dedicated Engine X bio extracts $40 per late payment from Program Terms eff. 4/1/2026. EXAMPLE B Rho: 3% of delinquent balance per month, up to 6 months, unless prohibited by law (ToS §2.4) + forfeit cash back for that period. Adjacent Coast: greater of 2.5% of past due or $35; after 31 days greater of 5% or $35.

Rewards & Value

Metric	The Business Platinum Card® from American Express	Fintech Platform Charge Cards
Base earn rate	1X Membership Rewards point per $1 on other eligible purchases	CATEGORY: Varies widely; rarely as simple as Spark uncapped 2% cash. EXAMPLE A Engine X: 1.5% back in Engine points on everyday / off-Engine purchases. EXAMPLE B Rho Standard: 1.25% Daily Terms / 1.00% Monthly Terms. Adjacent Coast: fleet rebates + non-fuel ~1% (collect from Coast rewards page).
Welcome bonus	Personalized — marketed as high as 300,000 Membership Rewards points after $20,000 eligible spend in the first 3 months. Welcome offers vary and you may not be eligible. Do not treat 300k as a guaranteed public offer.	EXAMPLE A Engine X (live as of 3 Sep 2026): 20,000 Engine points after activate + spend $2,000 in the first 30 days. Conflict — Fit Small Business (14 Jul 2026) adds off-platform qualifier; open engine.com/x/spend-incentive-terms. No hard expire date on public hero. EXAMPLE B Rho: no live dollar welcome on official product page as of 3 Sep 2026; NerdWallet (26 Aug 2026) still shows $500 — secondary/possibly stale.
Redemption value	Issuer does not publish a single cpp. Do not invent one. Pay-with-Points airfare is often treated near 1¢; hotel portal is frequently lower. Transfers can be higher or lower.	EXAMPLE A: points redeemable for flights, hotels, cars, statement credits via Engine; ¢/point Not disclosed; points have no cash value — do not assume 1¢. EXAMPLE B: statement credit at 1¢ per 1% after full on-time pay; must redeem within 12 months or forfeit (Rho will not notify); Daily Terms cash back typically posts around the 6th business day of the following month.
Transfer partners	Membership Rewards program (not card-unique; ratios change). Most airlines 1:1; commonly cited exceptions include Aeromexico 1:1.6, JetBlue 250:200, Hilton 1:2, Marriott 1:1, Choice 1:1, LHW 4:1. Re-check membershiprewards.com. Typical minimum 1,000 points. One-way. No expiration while the account remains open / program rules are met.	Generally not offered in the Chase/Amex bank-card sense. Engine redemption is platform catalog. Rho is cash back.

Credit & Eligibility

Metric	The Business Platinum Card® from American Express	Fintech Platform Charge Cards
Personal guarantee	Required in substance. CMA: “The Basic Card Member and the Company remain jointly and severally liable for all Charges.” Not a no-PG product.	CATEGORY hallmark: typically No. EXAMPLE A: We also do not require personal guarantees (apply page). EXAMPLE B: No, Rho Cards do not require a personal guarantee / not currently required. Adjacent Coast: no PG.
Credit check	Marketed “Know if you're approved with no personal credit score impact.” Secondary: decision often before a hard pull; hard personal inquiry commonly reported if the card is accepted. Business bureau review may occur when an EIN is used.	EXAMPLE A: no hard pull; will not impact personal credit score; last-4 SSN for CIP/KYC. EXAMPLE B: no hard or soft check on your (personal) credit score when applying for credit with Rho (FAQ). Adjacent Coast: applying won’t affect personal credit score (marketing).
Employee cards	Up to 99 additional. Platinum AU $400 with fuller travel benefits (lounge, hotel status, GE/PreCheck commonly reported as individual). Many statement credits remain account-pooled. Expense cards $0 without the full perk stack. Spend limits, alerts, freeze.	CATEGORY hallmark: physical + virtual with pre-spend controls. EXAMPLE A: limits by employee, project, category, transaction; 1099/contractor cards marketed; company (accountholder) liable. EXAMPLE B: unlimited virtual/physical; vendor-locked and single-use; per-card limits, merchant restrictions, freeze; international toggle. Adjacent Coast: GPS/odometer/fuel controls.
Product type	Charge card with No Preset Spending Limit plus optional Pay Over Time (hybrid charge / limited-revolve)	CATEGORY: Commercial charge cards bundled with expense or operations software. Pay-in-full; no revolving purchase APR. Not consumer revolvers. EXAMPLE A: Engine X travel-platform charge card (spend tiers, not separate card SKUs). EXAMPLE B: Rho Corporate Card with Daily Terms vs Monthly Terms repayment and Rho Platinum cash-back overlay. Adjacent: Coast fleet charge card.

Pros & Cons

The Business Platinum Card® from American Express

Pros

• 5X on Amex Travel flights / prepaid hotels / prepaid STRs, transferable MR, and 35% Pay-with-Points airline rebate
• 2X on defined U.S. construction, electronics/software/cloud, shipping, and $5k+ tickets up to $2M
• Global Lounge Collection plus $600 hotel credit and FHR/Hotel Collection access; $0 FTF; NPSL
• Business credit stack (Dell up to $1,150, Indeed $360, Adobe $250, wireless $120, ChatGPT Business $300) if those vendors are already in use
• CLEAR+, Global Entry/PreCheck, hotel elite status, and cell-phone protection on a charge card

Cons

• $895 primary fee and $400 perk-bearing employee cards
• 1X on most everyday spend; 5X does not apply to flights booked direct with airlines
• Credits are fragmented, enrollment-gated, and easy to miss; marketing “$4,000+ value” assumes utilization the business may not have
• Pay-in-full late fee can be 2.99% of past-due PIF; POT APR is high if used as working capital
• Personal / joint-and-several liability; welcome bonus is personalized (“as high as”) and generally once per this product

Fintech Platform Charge Cards

Pros

• $0 annual fee and $0 extra-card fee on Engine X and Rho (official pages, 2026)
• No personal guarantee; Engine and Rho state no personal hard pull (apply/FAQ)
• Engine X 6–10% points on Engine hotels/cars is a real category rate if that booking path is used
• Rho publishes cash-back math, exclusions, $1M cap, and 12-month redeem-or-forfeit
• Both issue virtual + physical cards with pre-spend controls; Engine decision timing published (24 hours typical)

Cons

• Not sole-prop products (Engine official; Rho commonly reported)
• Pay-in-full; Rho late fee 3%/month up to 6 months + rewards forfeiture
• Engine point cash value unpublished; 10% is not 10% cash
• Rho up to 2% is conditional (Platinum + Daily + on-time + domestic eligible MCCs)
• Insurance / lounge / Schumer-box items largely missing from public card pages; Engine FTF and late fee not boxed on /x

Verdict

The Business Platinum Card® from American Express

Business Platinum is the lounge-and-credits SKU — not consumer Platinum (different credits, broader direct-airline 5X) and not Business Gold (lower fee, auto-4X ads/restaurants/gas). It pays when portal travel, 2X categories, and enrollment credits are real spend you already have. Unused credits make $895 a net loss versus Ink Preferred or a 2% cash card. Poor daily driver for flat cash back, 0% capital, no-PG underwriting, or flights ticketed direct with airlines.

Fintech Platform Charge Cards

CATEGORY PATTERN — not one SKU. EXAMPLE A Engine X is also a dedicated bio in this set (prefer that page for Engine-only vs pages). EXAMPLE B Rho is the smaller banking-plus-card peer. Adjacent Coast is fleet-only. Measured against Ramp/Brex/Divvy, not a substitute for them. Anti-fit: sole props, 0% intro APR borrowers, and anyone treating up to 10% or up to 2% as unconditional cash. Re-verify welcome offers, FTF, and fee addenda before publish.