Expense tracking and reports

An optional add-on for users who would like to record expenses for their business as well as track income through sliced invoices. The reports should show sales tax and expenses by category. Plus the ability to add custom expense categories.

I have been searching for nearly a year for the perfect product that:
– Lives on my wordpress website
– Is while label
– Tracks income and expense
– Optionally connects expenses to clients
– Has recurring invoices.

Adding expense tracking would make sliced invoices perfect.