How to calculate STT?

Could you please elaborate on the process of calculating STT, or Security Token Tax? Is there a specific formula or methodology that needs to be followed? Are there any factors that need to be considered, such as the type of security token, the duration of holding, or the country of residence? Additionally, are there any tax exemptions or deductions that can be applied to STT? Understanding the intricacies of STT calculation is crucial for investors and traders in the cryptocurrency and finance industry.