In order of a right aplliance of audit, auditor should have a sufficient number of realiable and actual information which will present evidences on which auditor will form his opinion. That opinion can be postive, negative or restrained. Process of collecting evidences can be long and very slow, so in the recent time auditors use advanced IT tools, today known as CAATs. IT tools provide an array of features that make it easier to complete the audit process such as data processing, storing large amounts of data, risk identification, etc. These tools have a whole list of adavanteges such as time saving and quicker date process. In this study it was investigating about which software tools are used by auditors, do tools they use help them in collecting and processing of evidence, how satisfied are they with efficiency of these software tools. Also the goal of this study was to find out in what audit stage auditors mostly use IT tools. In the survey first hypothese is denied while the other two are accepted, but it comes to the conclusion that the auditors are not sufficiently familiar with the newer and more modern solutions available on the market. IT tools which are mentioned in the theoretical part of the research have long and successfully usage throughout Western Europe and the world. Since the revision is still relatively new activity in Croatia, it's likely to happen that greater prosperity profession will be reached over the years.