About Diamond Merchant Services

Diamond Merchant Services is dedicated to making credit card processing simple, affordable, and effective for businesses nationwide. We understand the challenges of managing cash flow, which is why we provide next-day funding—ensuring your money is available quickly. Our pricing is designed to help you save, offering some of the most competitive rates in the industry so you can retain more of your sales revenue. Our 24/7 client support ensures that you always have access to assistance, no matter when you need it. With 16+ years of experience, we bring expertise to the table, helping you handle all aspects of your merchant services, so you can focus on running your business.

We look forward serving your payment processing needs.

Our Servant Leader

Jason R. Aucello, the founder and president of Diamond Commercial Group, LLC (doing business as Diamond Merchant Services), has deep roots in the Manteca area, where he and his family have lived since 2002. A dedicated husband and father to three children, Jason is not only a business leader but also a coach and philanthropist.

His daughter, a graduate of The University of the Pacific, competed on the cross-country and track teams, while his son is pursuing a degree in exercise science at Sacramento State University. Jason’s youngest son, diagnosed with autism, actively participates in sports, including football, wrestling, and track, at Manteca High School.

Outside of his family life, Jason has contributed to the community through his service on The United Way of San Joaquin County board and the Stockton Community Council. As a former football coach for the Manteca Junior Buffs and a former member of the Greater Stockton Chamber of Commerce, Jason’s dedication to service and the community is unwavering.

Let Jason and his team help your business grow with expert credit card processing and payment solutions. Contact us for a quote today!