burnable gomi Dominican,
I know the guys on the ANA Wings contract are paying less than 10%.
A 10% rate is what the prefecture charges, it might be that their contract pays for all remaining tax liability in Japan, make sure that they clarify this with you since most of the ANA's contracts that are with resident status do pay your tax liability. Anyways this doesn't apply to JetStar, under this contract YOU are responsible for all tax liabilities in Japan.