There is no straightforward answer to this because it depends which contract you are on. Also the tax will vary depending what is you country of domicile (for tax purposes). All Wizz pilots pay income tax in Switzerland but at a very low rate. If however your home is the UK you will also pay UK Tax by self assessment, but due to the double taxation agreement, HMRC will let you off any Swiss tax paid so you don't get taxed twice. Local pilots (E. Europeans) are mostly on a local contract and have a different system again. The best way to find out is to call one of the two agencies that Wizz uses (Storm or Confair) and ask them. Generally it doesn't matter which base you are posted to, you will get the same base salary. There is one exception where an accommodation allowance is paid to assist with high rental prices at that base.