Summary
If you make 9,600,000 円 a year living in Japan, you will be taxed 2,848,260 円. That means that your net pay will be 6,751,740 円 per year, or 562,645 円 per month. Your average tax rate is 29.7% and your marginal tax rate is 38.2%. This marginal tax rate means that your immediate additional income will be taxed at this rate. For instance, an increase of 100 円 in your salary will be taxed 38.24 円, hence, your net pay will only increase by 61.76 円.
Bonus Example
A 1,000 円 bonus will generate an extra 618 円 of net incomes. A 5,000 円 bonus will generate an extra 3,088 円 of net incomes.