Please read up on what a permanent establishment means from a tax perspective. Most countries tax laws, especially EUs unambiguously state that the Estonian company will be taxed as if it was a company in your primary residence country.
The e-residence website repeats this many times, with many examples focusing on Germany.
The e-residence website repeats this many times, with many examples focusing on Germany.
https://learn.e-resident.gov.ee/hc/en-gb/articles/3600025428...
The whole e-residence thing only makes sense if you are from a non-EU country which doesn’t model its tax code on the OECD model.
People do get away with it until they get audited.