Free tools for payment pros.
Utilities to verify merchant codes, check card details, and analyse payment data. More tools launching soon.
MCC Checker
Search the full ISO 18245 Merchant Category Code list. Verify any MCC, check its risk profile and see if Cardflo supports it.Open toolBIN Checker
Identify the issuing bank, card scheme, type and country from any card BIN. Free, instant and useful for support or fraud review.Open toolIBAN Validator
Validate any IBAN with the ISO 13616 mod-97 checksum. Identify the country, bank, branch and BIC before sending funds.Open toolPricing Estimator
Estimate your monthly processing cost, including Cardflo fees, regional scheme caps and chargeback exposure in GBP, EUR or USD.Open toolPayment Response Codes
Decode ISO 8583 authorisation response codes from Visa, Mastercard and issuers. Understand declines and recovery actions.Open toolPayment Uplift Calculator
See the approval-rate uplift and recovered revenue you could unlock with multi-acquirer routing, smart retries and 3DS exemptions for your account.Open toolSix free payment tools built for merchants and payment ops teams. Look up an MCC before you apply, sanity-check a BIN on a suspicious authorisation, validate an IBAN in the checkout, model an interchange++ estimate against your current pricing, decode a payment response code from the acquirer, or work out how much revenue you can recover with smarter retries and routing. Each tool is instant, no sign-up, no data stored.
Which tool do you actually need?
You're applying for a merchant account
Start with the MCC checker and the pricing estimator. MCC decides which acquirers will touch you and how you're priced. The estimator lets you compare an offered rate against interchange++ so you know if the margin is fair.
You're investigating a live transaction
The BIN checker resolves the issuing bank, country and card brand from the first six digits. The payment response code decoder translates cryptic acquirer replies (05, 51, 91 and 200+ more) into what actually happened and what to retry.
You're modelling revenue uplift
The uplift calculator projects the impact of intelligent routing, retries and 3DS optimisation on your current approval rate. The IBAN validator is for finance and settlement teams reconciling SEPA payouts across the EEA.
You are reducing cost of acceptance
Pair the pricing estimator with the MCC checker. Most overpaying merchants are on a blended rate under a code that does not describe what they actually sell, and correcting both is usually worth more than switching provider.
You are recovering failed payments
Start with the response code decoder to separate hard declines from soft ones, then use the uplift calculator to size what retry timing and routing changes would return. Soft declines are recoverable revenue sitting in your existing traffic.
You are preparing for a trading peak
Check your MCC limits, model the fee impact of a volume spike, and confirm your payout details validate cleanly before the busiest fortnight of your year rather than during it.
Common questions
Do I need a Cardflo account to use the tools?
How accurate are the BIN and IBAN lookups?
What if my MCC is high-risk?
Can these numbers replace a formal quote?
Are these tools suitable for a finance team rather than developers?
How often is the underlying reference data updated?
Related guides.
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