Taxation is a significant expense for most companies and an important driver of profitability and value. Differences in the effective tax rate matter in equity analysis, but how should you calculate this metric and what rate should you use as a basis for forecasting? We explain the different calculations of effective tax rates, why it is important to examine the tax rate reconciliation footnote, the impact of exceptional gains and losses, and how intangible amortisation complicates the analys...
