Recurring billing and subscription management software is a tool that businesses use to bill customers at recurring intervals for a specific amount via a payment portal. In other words, rather than making a single bulk payment, the software allows customers to breakdown their payments into multiple smaller amounts. This is how it works—customers enroll themselves for recurring payments by choosing a specific type of payment, such as a credit card, for billing. Once they register their billing details, they become subscribers. For instance, Netflix uses recurring and subscription billing management software to automate payments from its customers every month.