Law /
WHAT DO I HAVE TO DO TO BE ABLE TO INVOICE PEOPLE/COMPANIES? [9]
Ukpolska is right and I can confirm that it is 100PLN that you pay. What you want is działalność gospodarza, this is your own registered company. There are a few steps involved. As Ukpolska said, you need a NIP and REGON number. Getting a PESEL doesn't hurt either. You need to go to the Urząd Wojewódski (Regional Office) and get some documents there. Also, GUS (Statistical Office) need to be contacted. You should also get yourself a stamp so you can stamp the name of your teaching company, together with your NIP and REGON.
I had to go through this process to start in Oct 2007 so I can assist should you be unsure. Urząd Mieski is where you go to register your interest (Town Hall).
You may also need a NIP-1 form which regulates who is responsible for tax payments. Be careful, your main client (school you teach at) may put your name on it, in which case you are liable for inaccuracies in tax calculations. Be sure to put their name on it unless you wanna calculate the tax yourself.
UKpolska gave you super advice and he has a super deal at 50PLN a month. I pay 150PLN plus 33PLN in tax so 183PLN. However, the office that my financial guy, Wojtek, works for bears a lot of responsibility. His name is on the NIP-1 form. Ultimately, I am still liable but the tax office will question him in the event of any anomalies in the calculations. He gives a very complete service. He sends all my documents to ZUS, calculates it (though you can check it in Informator or other papers) and takes care of my books (przychodów i rozchodów, income related) and also does my end of year PIT-form calculations. I simply give my 2 or 3 bills to him on around the 5th of each month and he takes over from there.
Trust me, it's worth investing in. Any further help required, please don't hesitate to ask.