Across all industries, it is clear that online trade is an important sales channel and distribution channel. Many companies use the opportunity to open up new markets. By outsourcing services and storage spaces, not only large corporations but also SMEs can enter online trading quickly and cost-effectively. This step should be well prepared in advance so that there are no unpleasant surprises afterwards when processing the accounting, or even problems with domestic and foreign tax authorities. A digitalised accounting system and the use of suitable software solutions supports the control of the tax-relevant data and makes the daily work easier.