Progressive taxation is a system where the tax rate increases as income increases.

This system is necessary to maintain social fairness.

The consumption tax rate in Japan is 10%.

The population is increasing rapidly.

This product is subject to taxation.

The government is considering taxing carbon emissions as a new source of revenue.

He was rapidly promoted in the company through the progressive system.

His position was gradually promoted.

His income is increasing year by year.

This building is very high.