@hanco , if the taxes were paid on INCOME i.e. net income tax, then you just have to tell the system that you worked there and see what the software does. Because it is trying to distinguish between active and passive income I think.
However, if the tax was like VAT or sales tax or similar ( i.e. per sale / transaction and not net income of the business ) then you should report this under taxes/ licenses on schedule-C.
Hope that makes sense
