I am teaching some private English Classes in a business setting and the company needs to know how much to put aside for the IRPF 'retención'. What I´ve gathered so far is that this 'retención' gets deducted from what they pay me, they then pay this 'retención' to the government, and then I then collect it back from the gov''t at the end of the year. What I am having trouble with is figuring out how much this retención should be. One gesto said it should be 15%, another person told me it should be 2%. My annual income will be less than €10,000. Anybody have any ideas how to make sense of this?