Cayan was acquired by TSYS in 2017 and currently operates under the TSYS brand. Headquartered in Boston, the company has multiple offices in the United States and Belfast, Northern Ireland. TSYS has processed more than 25.5 billion transactions.

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Payment methods

  • Payment Card

Accepted card brands

  • American Express
  • Discover
  • MasterCard
  • Visa

Supported operations

  • Auth
  • Capture
  • Sale
  • Refund
  • Query

Supports merchants in

  • United States


US Dollar (USD)

Required credentials

  • Merchant key
  • Merchant site ID
  • Merchant name

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