Thank you, just to clarify - I assume that the pre-approval you mention relates to the tax ruling application. If so, this is︀ not mandatory and not required by law. However, it is the recommended course of action︁ to make sure that the Tax Office will not challenge the tax status at a︂ later stage.
For a positive outcome of the tax ruling the application needs to be︃ supported with evidence that the IP is a qualifying asset under the Regime and that︄ the R&D expenses are subject to capitalisation in accordance with IAS 38 (International Accounting Standard︅ 38). As such, to make sure that a positive outcome is achieved a detailed reference︆ to accounting standards needs to be made showing eligibility for capitalisation of R&D costs.
From experience, once the tax ruling returns with a positive outcome this cannot be annulled and︇ will grant the company indefinite protection.