For the purpose of avoiding tax, Schueler failed to observe a statutory duty pertaining to taxation that is of significance in the assessment of tax. Schueler failed to file business tax returns for the tax multiple years and also failed to complete information on his income on his pre-filled personal tax returns. Schueler received income from his business or income-generating activities that he should have declared to the Tax Administration for the purposes of tax assessment. The total amount of tax avoided is counted in hundreds of millions of euros.