The Voivodeship Administrative Court in Wrocław in its judgment of 24 November 2010 case file I SA/Wr 1080/10 ruled that the client can deduct all the VAT in case of advance payment of fees for the entire period of software maintenance. The position of a tax authority stating that deduction is possible only in the settlement period in which service will be completely provided, is incorrect. It is another judgment favorable to taxpayers.