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CTQ Decoder

Decode EMV Tag 9F6C — Card Transaction Qualifiers — bit-by-bit per EMVCo Book C-3

🔍 Input

Enter a 4-character hex string (2 bytes). Spaces are OK.

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📖 About This Tool

What is the CTQ Decoder?

The CTQ Decoder interprets Card Transaction Qualifiers (EMV Tag 9F6C), a 2-byte Mastercard-specific value that tells the terminal how to process a contactless transaction, including online/offline preferences and CVM requirements.

🛠️ How to Use
  1. Enter the 4 hex character CTQ value (Tag 9F6C).
  2. Click Decode to see each bit flag.
❓ FAQ

What is CTQ used for?

The CTQ (Card Transaction Qualifiers, Tag 9F6C) is a Mastercard contactless-specific tag that indicates the card preferences for the transaction: whether to go online, require CVM, or support consumer device CVM (CDCVM) like mobile device biometrics.