Welcome to ONTOP, Makers of PAYLEX
Software, IT Consulting, and Financial Services Platforms. Smarter Solutions at Work for Growing Businesses.
ONTOP Systems is a full-service Software Development, IT Consulting, and Financial Services Platform Provider based in Portland, Oregon, USA.
We apply unique technology solutions, many developed ‘In-House,’ to address the needs of businesses of all sizes. We target opportunities where Business Process Automation will save client organizations Time and Money!

ACH / eCheck Now Available for Order Entry!
In our ongoing pursuit of SOLUTIONS and SAVINGS for Merchants, ACH / eCheck offerings through our partners at both Elavon and TSys/Global are now available.

Visa and Mastercard Interchange Pricing
Visa and Mastercard traditionally update their pricing every six months (in April and October). These are “Official links” to Visa and MC websites for Interchange Pricing documents.

Unique Solutions for Your Business
About Us
No two businesses are the same. We believe the technology supporting your business operations should reflect the specific needs of your company. That’s why we offer unique IT solutions.
ONTOP/PAYLEX Support
We provide support to you 24/7. You can submit a request or search our multiple articles and videos at any time.
Contact us today for top-tier IT Solutions
© 2026 ONTOP Systems, Inc.



