German Tax Report :: Paid Bills and Expenses by Category

Hi,

I've got a question:
As a small business owner, i want to export the paid bills and expenses by category to have a list for the tax-report (einnahmen-überschuss-rechnung)

My Customers get a bill once a year to be paid for common services and sometimes special bills for changes (i design and host websites)

Now, i know how to do this with php and sql, but it would be nice to have this as a report ...

And maybe there is a report and i am just doing this wrong ;-)

Thanks in Advance!