The state-owned PostBus company has admitted to hiding profits in its operations in neighbouring France in a scandal over illegal subsidies.
Swiss Post, the parent company of PostBus, said an investigation confirmed that the financial situation of PostBus subsidiaries abroad had not been “presented in full”, according to a statement published on Tuesday.
The report also showed that CarPostal France and PostBus Liechtenstein were “not charged for all services”.
This resulted in around CHF67 million ($67 million) in total being paid by PostBus to its parent company between 2007 and 2012.
Swiss Post said such “unacceptable” practice enabled profits at PostBus to be kept low in order to claim subsidies.
It added that a correct allocation of the costs would have led to less positive financial results.
Swiss Post said it would review its future operations in Liechtenstein. It has already withdrawn from France.
A parliamentary committee is continuing investigations and preliminary criminal proceedings have been launched.
With over 4,200 employees and around 2,300 vehicles at its disposal, PostBus transports around 155 million passengers each year.