Plastiq
Credit Card Bill Pay & Business Payables Platform
Best For
Small business owners and consumers wanting to pay rent, mortgage, inv
Core Fee
2.99% per transaction for credit and debit cards; ACH transf
Settlement
ACH bank transfers typically 1–3 business days; wire transfe
Sardine
Fraud Prevention & Compliance Platform — Enterprise Service
Best For
Fintechs, crypto exchanges, and financial institutions wanting real-ti
Core Fee
B2B enterprise pricing; varies based on transaction volume,
Settlement
Real-time fraud scoring; behavioral analytics; instant risk
Full 20-Point Audit Matrix
Verified current data across all key decision criteria
| Audit Criterion | Plastiq | Sardine |
|---|---|---|
WealthBlueprint RatingOverall score vs. all reviewed platforms (out of 5 stars) |
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| Cost Structure & Fees | ||
Transaction FeesPer-transfer costs, domestic & international |
2.99% per transaction for credit and debit cards; ACH transfers $0.99/payment; check delivery $1.49/payment; no monthly subscription or setup fees | B2B enterprise pricing; varies based on transaction volume, integration scope, and services required |
FX / Conversion SpreadMarkup above mid-market exchange rate |
Plastiq charges a conversion fee based on the currency pair and transfer amount. Always verify the all-in rate before sending.
Always check the live rate in the app |
Sardine charges a conversion fee based on the currency pair and transfer amount. Always verify the all-in rate before sending.
Always check the live rate in the app |
Account MaintenanceMonthly or annual account-keeping charges |
No monthly fees — Plastiq does not charge recurring maintenance fees.
Fees subject to change — verify before signing up |
Custom/tiered pricing — Sardine's fee structure depends on your account tier or usage volume.
Fees subject to change — verify before signing up |
Card Issuance FeesVirtual and physical card creation costs |
Plastiq offers virtual cards.
Check the Plastiq app under card settings for current issuance fees.
Check Plastiq app for current card fees |
Sardine does not primarily offer physical cards — access is digital-first.
Check Sardine app for current card fees |
| Settlement Speed & Reliability | ||
Domestic SettlementLocal bank transfer completion time |
Plastiq
ACH bank transfers typically 1–3 business days; wire transfe
VS
Sardine
Real-time fraud scoring; behavioral analytics; instant risk
✓ Sardine is faster (instant vs ACH bank transfers typically 1)
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Cross-Border SpeedInternational corridor settlement time |
Plastiq supports cross-border transfers via its payment rails. Actual delivery depends on the receiving bank and any compliance holds.
Check the app for live estimates |
Sardine supports cross-border transfers via its payment rails. Actual delivery depends on the receiving bank and any compliance holds.
Check the app for live estimates |
Uptime / ReliabilityReported annual platform availability rate |
Plastiq publishes service status updates on its official status page for transparency.
Check Plastiq status page for incident history |
Sardine publishes service status updates on its official status page for transparency.
Check Sardine status page for incident history |
| Security & Regulatory Standing | ||
Regulatory LicensesGoverning bodies and jurisdictions |
PCI DSS compliant; filed Chapter 11 bankruptcy in May 2023 but continues operating; blocks payments flagged as potential cash advances; SOC-compliant infrastructure
✓ Licensed |
Enterprise-grade security; SOC 2 compliant; advanced fraud detection algorithms; supports compliance with regulatory requirements
✓ Licensed |
Deposit InsuranceGovernment-backed protection scheme |
Plastiq holds funds with regulated partner banks. Deposit insurance coverage may apply.
Verify current coverage directly with Plastiq |
Sardine holds funds with regulated partner banks. Deposit insurance coverage may apply.
Verify current coverage directly with Sardine |
2FA & AuthenticationMulti-factor security implementation |
Plastiq supports 2FA via authenticator app or SMS. Check security settings for available methods.
Enable 2FA immediately after opening your account |
Sardine supports 2FA via authenticator app or SMS. Check security settings for available methods.
Enable 2FA immediately after opening your account |
Fraud DetectionAI/ML-powered transaction monitoring |
Plastiq employs automated transaction monitoring. Suspicious activity triggers alerts and temporary holds.
✓ Real-time monitoring |
Sardine employs automated transaction monitoring. Suspicious activity triggers alerts and temporary holds.
✓ Real-time monitoring |
| Features, Limits & Access | ||
Ideal Use CasePrimary audience and core value proposition |
Plastiq
Small business owners and consumers wanting to pay rent, mortgage, invoices, tuition, and vendor bills via credit card to earn rewards or extend cash flow by 45–55 days
Sardine
Fintechs, crypto exchanges, and financial institutions wanting real-time fraud detection, AML compliance, and risk management
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Platform ClassificationRegulatory and product category |
Credit Card Bill Pay & Business Payables Platform | Fraud Prevention & Compliance Platform — Enterprise Service |
Withdrawal LimitsDaily / weekly transfer and cash-out caps |
Plastiq applies tiered withdrawal limits based on your KYC verification level and business activity.
Log in to see your current limits |
Sardine withdrawal limits vary by account type and KYC level.
Log in to see your current limits |
Supported CurrenciesFiat and digital asset coverage |
Plastiq supports the currencies and assets listed in its official documentation.
Check Plastiq official site for full currency list |
Sardine supports the currencies and assets listed in its official documentation.
Check Sardine official site for full currency list |
| User Experience & Support | ||
App Store RatingAggregate iOS + Android user satisfaction |
Plastiq app ratings reflect recent user sentiment — check the App Store/Google Play for current scores.
Verify live ratings on the App Store |
Sardine app ratings reflect recent user sentiment — check the App Store/Google Play for current scores.
Verify live ratings on the App Store |
Customer SupportAvailable resolution pathways and SLA |
Plastiq routes support through its official help channels. Priority queue access varies by plan.
Check Plastiq help centre for current support options |
Sardine routes support through its official help channels. Priority queue access varies by plan.
Check Sardine help centre for current support options |
KYC Verification SpeedAccount activation timeline post-submission |
Plastiq business verification may take longer — check the onboarding flow for current timelines.
Verify current wait times in the Plastiq app |
Sardine KYC timelines depend on document quality and account type.
Verify current wait times in the Sardine app |
Overall VerdictWealthBlueprint independent recommendation |
IT'S A TIE — both score 3/5 stars.
Choose Plastiq if you need: Small business owners and consumers wanting to pay rent, mortgage, invoices, tuition, and vendor bills via credit card to earn rewards or extend cash flow by 45–55 days. Choose Sardine if you need: Fintechs, crypto exchanges, and financial institutions wanting real-time fraud detection, AML compliance, and risk management. ➜ Your choice depends on your specific needs |
|
Official WebsiteVisit platform to sign up or verify current fees |
Visit Plastiq ↗ | Visit Sardine ↗ |
WealthBlueprint Verdict Summary
Plastiq — Best For
Small business owners and consumers wanting to pay rent, mortgage, invoices, tuition, and vendor bills via credit card to earn rewards or extend cash flow by 45–55 days
✓ Strong in its core category
Sardine — Best For
Fintechs, crypto exchanges, and financial institutions wanting real-time fraud detection, AML compliance, and risk management
✓ Strong in its core category
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