If you have a parent in your home country as a dependent

 　When applying for permanent residence with a work visa, you will be required to submit municipal and prefectural tax tax statements for the most recent three years. If you have a large number of dependents, there is a high possibility that your benefits will be exempt from tax. In particular, by making your parents in your home country a dependent, you can often reduce your tax bill.

　Families that can be classified as "dependents" are required to show that they are sending money. In Japan, if the family's annual income is less than 72 yen, the minimum standard for remittance is 1 yen per person per month. In the case of foreign countries, the standards may be relaxed compared to Japanese standards. However, when applying for permanent residence, you will need to submit proof of remittance.

　Additionally, if you do not actually support your family by sending money to them, you can remove them from your dependents and file an amended tax return. If the number of dependents decreases, the amount of tax will increase and you will need to pay taxes again. However, when applying for permanent residence, you may be required to explain the circumstances behind the amended tax return.