Types of Tax deduction (Tax credit) in Japan are as follows.
Credit for dividends
When earning dividend income (excluding that for which separate taxation is elected)
Special credit for loans, etc. related to a dwelling
In the case that you have constructed, purchased or rebuilt a house used as a dwelling or carried out specific additions or improvements, etc. with a housing loan
Special credit for contributions to political parties
When you have made certain specified contributions to a political party or political organization
Special credit for donation to certified NPOs
In the case that you have made a donation to a certified NPO
Special credit for donation to public interest incorporated association
In the case that you have made any donation to a specific public interest incorporated association, public interest incorporated foundation, incorporated educational institution, etc.
Special credit for anti-earthquake improvement made to an existing house
In the case of having executed anti-earthquake improvement work to your house
Special tax credit for specified housing improvement
In the case that you have carried our improvement work on your house to make it barrier-free or improve energy conservation
Special tax credit for new building
In the case that you have built a cerified house, or purchased the one.
Credit for foreign tax
In the case that you have paid foreign income tax