In 2023, France's air pollution-related total tax revenue stood at 1.45% of GDP. The forecasts from 2024 to 2028 indicate a subtle declining trend, decreasing by 0.01% of GDP each year, stabilizing at 1.41% by 2028. The year-on-year variation is minor, reflecting the model's anticipation of a gradual decline in tax revenue as a percentage of GDP over this period.

Future trends to watch for include:

Potential governmental policy shifts affecting air pollution control and associated fiscal measures.
Technological advancements aimed at reducing air pollution, possibly influencing tax revenues.
Economic growth trends impacting GDP ratios and tax structure adjustments.