| Show INCOME TAX IN NUTSHELL whoa single persons who had net income of 1500 or more or gross income of or more and married couples who had net income of or more or gross income of or etore must file returns whenn the filing period ends march 15 1927 WHERE collector of internal rev enu for the district in which the person lives or has his principal place of business HOW instructions on forms and 1040 also the law and regula eions WHAT one and one half per cent normal tax on the first in excess of the personal exemptions and credits three per cent normal tax on the next five per cent normal tax on the balance of net income surtax on net income in excess of |