No. Tax modelling is a decision-support tool; it binds neither the tax administration nor the courts. What it does is project the likely tax burden for the structure and the assumptions chosen — and the assumptions that carry the result, such as profit distribution, transfer pricing and whether an exemption or relief actually applies, should be exposed through sensitivity analysis rather than buried in it.
The way to turn the result into a formal assurance is to ask the administration for an advance ruling (özelge) under the Tax Procedure Law (No. 213). Where you have acted in good faith and in line with what you asked, the ruling binds the administration as against that taxpayer and can limit the exposure to penalties and default interest. In cross-border structures, double taxation treaties and, where one is in place, an advance pricing agreement narrow the uncertainty further. In short: the model shows you the direction; what makes it binding is proper documentation and, where it is needed, a ruling.
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