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%.

His position was gradually promoted.

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

The population is increasing rapidly.

This product is subject to taxation.

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

His income is increasing year by year.

This building is very high.