I mean great if there are legal requirements for invoices, but who enforces them, how likely is enforcement, and what’s the end result for a US-based company with no physical presence in The Netherlands?
Being in the UK, we tend to work on a system where things are taken in context and you can defend such decisions. Maybe other tax regimes are more restrictive, but the British way is always that you can have a debate with authorities and usually they will see sense in your reasoning if you're not trying to defraud them.
If they want to claim the expense they can find a competing company who issues an invoice.
https://twitter.com/i/status/1192182812121583617 The actual tweets probably explain it better than I (and the parent comment) can.
Since this predates threads, I can’t find all the tweets but this is one of them:
If you use US companies for services in a European business, you are almost certainly going to have invoices every month that don't meet EU regulations at all and you just have to make it work.