The consumption of Income-tax was started from 1979. There are two different taxes, they are government tax and municipal tax. The government tax includes the insurance, consumption tax, etc. Municipal tax is not charged for the first year in Japan. The Japan income tax formula helps you to find the net income from the total annual income. The difference in salary, insurance, income tax and insurance is the formula to find income tax in Japan.
The Japan income tax formula explains the formula to calculate the different taxes. Just click on the Japan income tax calculator link below the formula to find income tax in Japan within the fractions of seconds.