One of the problem of tax administration is a struggle with tax frauds mainly in the area of VAT tax. The aim of indicating different types of verification of tax payers that may be involved in tax frauds a Financial Ministry has created a document of a directive type for tax organs. The methodology embraced in this document should help to evaluate entities with proper diligence in the area of risk evaluation (tax) used in VAT tax scope. Guidelines – in a quite comprehensive part – refer to verifying activities described as open-source intelligence or info brokering. The aim of this article is to present an idea of open-source intelligence, popular sources of gathering reliable information about entities and the possibilities of its usage for evaluating a risk of implication in tax frauds.