The CalCATS Payment Portal provides payment services for the San Mateo County Agricultural Commissioner's office and allows businesses to pay various Agricultural and Weights & Measures fees online using a credit card or eCheck. This site does not collect or store any personal information, credit card details, or bank information - all financial information is handled securely by a third-party payment processor.
There is a 3% convenience fee for making online credit card payments - this fee is paid to the credit card processor and is not retained by San Mateo County. There is no fee for making payments using eChecks. To begin, please enter the information below from your county device registration invoice.