The pollution environmental tax in Switzerland has shown a consistent and gradual increase over the forecast period from 2024 to 2028. Starting at 0.054% of GDP in 2024, it is projected to climb each year to reach 0.06% of GDP by 2028. Comparing the two most recent years, the tax grew from 0.057% in 2026 to 0.058% in 2027, indicating an approximate 1.75% year-on-year increase. Considering a longer five-year period, the compound annual growth rate (CAGR) from 2024 to 2028 stands at approximately 2.68%.

Future trends to watch for include:

Potential policy changes impacting the taxation rate.
Shifts in economic performance, which could influence the proportion of GDP dedicated to the pollution tax.
Technological advancements and their adoption rates that might affect pollution levels and subsequent tax rates.