In-App Payments


Platform Payments

Power your platform with our integrated online payment processing solution.

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Payline I/O

Payline I/O is a payments API offering secure integration, instant merchant on-boarding, and flexible funding for software platforms that connect businesses with their customers. Unlike other integrated payments solutions, Payline I/O allows more flexibility and control over key aspects of the user’s payment experience.

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Payline I/O is for:

  • Software developers who facilitate payments within their software platform
  • Co-founders looking to scale their business in a way that can be customized to meet specific needs
  • COOs in need of a way to speed up the payment process for users with their own merchant account
  • CTOs looking for a payment API that will provide control over the user experience while seeking new revenue opportunities
  • Business owners in search of a better payments experience for their users


Payline I/O



$0.30 per transaction

No recurring monthly fees

Get Started


Dynamic Funding

Control the timing of settlement and funding to create a better payment experience for both buyers and sellers.

Multi-Account Fund Disbursement

Settle funds to multiple sub-merchant bank accounts on-the-fly for more flexible funding options.

Flexible Price Configuration

Configuring billing, fees and payment-splits to accommodate a wide variety of business and pricing models.

Broad MCC Code Coverage

Underwrite most low-to-moderate risk businesses to serve more markets, acquire more customers and grow faster.

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Payline Data Services LLC is a registered ISO/MSP of Fifth Third Bank, Cincinnati, Ohio, Member FDIC; Chesapeake Bank, Kilmarnock, VA; and Deutsche Bank AG, New York, NY.

Payline Data Services LLC is a registered Payment Services Provider (PSP) and Payment Facilitator (PayFac) of Fifth Third Bank, Cincinnati, Ohio, Member FDIC.