Costs & Pricing

Metric	Delta SkyMiles® Gold Business American Express Card	Fintech Platform Charge Cards
Annual fee	$0 intro year 1, then $150 (first year of Card Membership only)	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	$0 (CMA: Annual Fee for Additional Cards: None)	CATEGORY: Usually $0. EXAMPLE A: $0; unlimited physical + virtual (marketing). EXAMPLE B: $0; unlimited physical + virtual.
Purchase APR	19.49%–28.49% variable (Prime + 12.74% to Prime + 21.74%); placement by creditworthiness at account opening. APRs accurate as of 09/02/2026. No 0% intro.	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	Up to $39 (will not exceed Minimum Payment Due)	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	Delta SkyMiles® Gold Business American Express Card	Fintech Platform Charge Cards
Base earn rate	1 SkyMile per $1 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	Conflict across official pages. Delta business-cards page: limited-time 90,000 bonus miles after $6,000 eligible purchases in the first 6 months — offer ends November 4, 2026. Amex product page (same period): evergreen-style 60,000 after $4,000 in the first 6 months with no end date. Treat 90k/$6k through 11/4/2026 as the live limited-time public offer; 60k/$4k as the fallback. Apply-flow T&Cs win.	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	Pay with Miles = 1.0¢ ($50 off per 5,000 miles on delta.com). Award travel is dynamic; TakeOff 15 improves award pricing ~15% on Delta-operated flights only (not partner-operated, not taxes/fees). Do not assume transfer-partner value — this card does not transfer.	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	None. Currency is Delta SkyMiles, not Membership Rewards. No transfer-out to other airlines. Miles do not expire under Delta’s published policy; Delta may still deactivate an account and remove miles.	Generally not offered in the Chase/Amex bank-card sense. Engine redemption is platform catalog. Rho is cash back.

Credit & Eligibility

Metric	Delta SkyMiles® Gold Business American Express Card	Fintech Platform Charge Cards
Personal guarantee	Required in substance. CMA: Basic Card Member and Company remain jointly and severally liable for all charges. Quote the live application before publishing a legal excerpt.	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	Know if you're approved with no impact on your personal credit score until acceptance. Business credit may be impacted on submit. Accepting the card may impact personal credit. Treated as a hard pull on accept in industry practice; Amex does not print “hard pull” on the marketing page.	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	$0 additional-card fee. Spend controls / alerts marketed; Account Manager role can add cards, pay, review transactions. Hard cap on number not disclosed on this product page — do not invent 99 unless the application states it.	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	Revolving small-business credit card (published purchase APR, ADB interest, minimum-payment rule). Not a charge card. Not a corporate / net-terms spend platform.	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

Delta SkyMiles® Gold Business American Express Card

Pros

• $0 year-1 fee then $150 — lowest annual fee in the Delta business lineup
• 1st checked bag free worldwide + 2nd bag free domestic (2026 add) can offset the AF in a few team trips
• 2X on uncapped restaurants plus capped U.S. shipping and U.S. digital/TV/radio ads
• $0 foreign-transaction fee and $0 employee cards (employee spend feeds the $10k flight-credit threshold)
• TakeOff 15 reduces Delta-metal award cost 15%

Cons

• Ongoing $150 AF with credits that are conditional, portal-locked, or enrollment-gated after renewal
• Miles are Delta-only — no Membership Rewards transfers
• No lounge, no GE/PreCheck credit, thinner insurance than Platinum/Reserve Business
• No 0% intro APR; carrying a balance is expensive (19.49%–28.49% as of 09/02/2026)
• Personal guarantee / joint and several liability; advertising 2X is MCC-narrow (media providers, not any marketing vendor)

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

Delta SkyMiles® Gold Business American Express Card

This is the low-fee Delta business cobrand — not personal Delta Gold (supermarkets 2X), not Platinum/Reserve Business, and not Amex Business Gold (MR). Confirm the live apply-flow welcome (90k/$6k through 11/4/2026 on Delta vs 60k/$4k still on Amex’s product URL). Skip it if you will not fly Delta, want transferable points, need 0% float, or refuse a PG.

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.