Wave is a multipurpose double entry accounting software which is user-friendly and is conceptually designed for small businesses and freelancers. This accounting software includes both online payment and payroll applications that integrate with accounting applications like QuickBooks. The features of quickbooks wave integration are totally free and users have to pay, if they choose to accept payments online using Wave Payments or sign up for Wave Payroll. For self-employed people, Wave Payments will help them in getting paid a lot faster, as it allows their customers to pay them directly from the invoice that is emailed to them.