Whenever someone think about the German Tax system, he/she will get inputs that tax rate is very high as much as 40%. Actually this is not correct, this perception is due to not understanding various types of mandatory deductions. Here we are explaining the Income tax and other mandatory deductions from your salary and also what is refundable.
Germany has very systematic income tax system.
As in India, we have TDS system, here also income tax is deducted from your salary directly.
Key salient features
Financial year is same as calendar i.e. January to December
Tax rate is based on your marital status, kids etc. So register you family and check the tax class in the "Bescheinigung für der lohnsteuerabzug".
Tax rate is progressive, not flat like India (details given later)
You get a document (Tax card or Lohnsteuerkarte) from Rathaus about your tax class and your tax office every year. First one you can get while registering at Rathaus.
Tax paid in excess (details in FAQs) needs to be claimed back through tax return filing
Tax classes (Steuerklasse)
Most of Indians falls into Tax class I or III (One or three). If both partners are working then tax class IV and IV or III and V.