If you're looking for the best eCommerce payment processing services in Los Angeles, California, Electronic Merchant Systems (EMS) can help. EMS proudly offers businesses in Los Angeles a suite of secure payment processing solutions for both online and in-person transactions.Now, our offices are ready to begin offering a new payment option to our vendors: E payables. Process nearly any kind of payment, any way you want. Our future-focused hardware and software syncs with the systems you run on. Payment processors allow small businesses to accept multiple online payment methods. Read up on the features of six popular credit card payment companies. The City accepts both ACH Credit and ACH Debit. Other tax jurisdictions use a telephone payment system. We've compiled seven of the best online payment solutions providers, analyzing their unique services and defining which businesses they suit best.