YOU SAID:
Your parents used you for a tax benefit
INTO JAPANESE
あなたの両親はあなたを税務上の便宜のために利用しました
BACK INTO ENGLISH
Your parents used you for tax convenience
INTO JAPANESE
ご両親が税務上の都合でご利用になりました
BACK INTO ENGLISH
Your parents have used it for tax purposes
INTO JAPANESE
ご両親が税務目的で使用しています
BACK INTO ENGLISH
Your parents are using it for tax purposes
INTO JAPANESE
ご両親が税金目的で使用しています
BACK INTO ENGLISH
Your parents are using it for tax purposes
That didn't even make that much sense in English.