The Deloitte European Tax Survey also reported that that 97% resulted from what were termed the “frequent” alterations in the taxation framework in recent years as a driver of the problem.


A further 43% also complained about the ambiguity and shortcomings in the information provided by the tax authorities.


However, 44% of Portuguese based respondents maintained their relationship with the tax authorities was either good or very good whilst 83% of them said that it was at the same level as last year.


Around 79% said the fiscal inspections primarily targeted sources of company earnings whilst VAT was also identified as a reason in 66% of cases.


In turn, international transfer pricing and taxes paid (17%) and taxes on consumption and custom’s duties (7%) were the issues companies reported came in for fewest inspections.


The study of 940 companies across Europe found that in the Portuguese case greater stability and greater fiscal simplification would do most to improve the situation.