CubeCart have partnered with PayPal to offer Pay Later options.
With Pay Later from PayPal, you can help customers buy now and pay over time — while getting paid up front on purchases. With convenient buy now and pay later options, customers can pay for purchases in four interest-free payments with Pay in 4, or get special financing through a digital line of credit with PayPal Credit. Pay Later options are already included in your PayPal Checkout integration and available for your online store at no additional cost to your business.
To make sure Pay Later options are available to your customers please make sure your PayPal Commerce extension is at the latst version. Pay Later buttons and messaging are enabled by default but can be controlled in the "Manage Extensions" area of your store control panel.