The expertness institution at administrative judgement law

In our study, it has investigated not only involved process but also impact the final court decision that the expertness institution working at administrative judgement law, what the expertness institution in judicial process and it?s historicial evolotion with it?s operation, it?s working at administrative judgement organisation?s which is primary degree courts administration and tax courts in which subjects need to ? in which subjects need not to application to the expert, if ever applicate the expert how choosing the expert and in what subjects need have to take into consideration; the expert drawn back; refused the expert by parties; charging the expert and dismisal the expert by judge subjects fort he first sue to administration and tax courts via the sample law suits.Than it has been investigated in resourch, preparing the process of the expert report; the experts powers when the report preparing; report?s content; report?s form; report?s qualities; to entrust the report to court what the judge have to do when the report not prepare ; notification the report to the parties and refused the report by parties with which path the judge choose when the admission or refused the report stuation.And finally the resourch has finished, the expert report which prepared and present of binding priority how investigate in doctrine and inthis sense what the concepts? which take form the notable than what the attitude of Council of State and the High Supreme Court which is the high courts and appellate Offices about the subject of binding.Keywords: Expertise, Administrative Jurisdicdion, Tax Jurisdiction, Administration Court, Tax Court