MPI is a locally owned Delaware company. Based in Sussex County, MPI's headquarters are located in Millville. Mercantile Processing Inc. services small businesses, restaurants, hotels, and seasonal merchants. MPI also has the ability to broker for state and federal institutions, large business, and cash advance companies.
Read our merchant tips blog for helpful tips and advice about credit card processing.
MPI is excited to announce the newest addition to its terminal lineup - the Pax S90! MPI has tested the terminal extensively. B…
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