How much does membership in a trade union cost?

When you become a member of a trade union, you pay a membership fee. This is deducted from your gross pay. The amount depends on the trade union. People with no income, pensioners and students pay a lower amount. You can deduct the membership fee from your income tax under "Werbungskosten” (advertising expenses). These are all the costs associated with the acquisition your money. So you get part of the amount back on your tax return.