Getting your income to flow quickly into your business is a sure path to improving cash flow. Making it easy and convenient for your customers to pay will improve the process. Of course, automating your invoicing process as much as possible with technology gets the ball rolling in your favor.
If your accounting software and/or 3rd party app is set up for automating your invoices, many have payment processing built in. It sends the invoice directly to the customer via email and they have the option to pay with ACH or Credit or Debit card instantly with a click of a button. Technology is moving fast, and apps go in and out of style, but taking the time to review a few options to integrate into your payment processes will help with your cash flow. There are so many ways money can be sent and received. Making it easy for your customers to pay you is good business.
If you find that your customers consistently ask if you use a particular payment option, that may be a great place to start.