Milk book included
Milk book accounting is a common term in Switzerland that has two connotations. On the one hand, an "invoice that is too simple and does not do justice to the complexity of the matter" can be meant, as is the case with the (German) term milkmaid invoice .
On the other hand, the term (then mostly in the form of a milk book invoice) describes a simple accounting for smaller companies, whereby records are only kept of income and expenditure as well as the financial position. This type of accounting is permitted for companies with an annual turnover of up to CHF 500,000 and is regulated in Art. 957 of the Swiss Code of Obligations (OR).