Preben Aas has long experience within both the corporate and fiscal fields. He is especially active within the field of transactions, mergers and demergers, and also with general tax issues both for individuals and undertakings.

He assists both upon due diligence processes and in connection with tax audits and appeals to the tax authorities. In addition to his law practice, Preben has long experience within corporate finance, and has provided assistance across a range of business areas, for example within shipping, real estate, commercial service provision, production activities, films etc..