ProcPoS pays royalties to authors, on January 31st, from license fees accumulated during the previous calendar year. Royalty is a percentage of each article's total license fees, progressively increasing up to 50%; details are specified in author's contract with ProcPoS. Note that ProcPoS may have to first deduct and pay a withholding tax from royalties payable to you, depending on your country of residence (see Finnish Tax Administration regulations).