44 LAWS OF MARYLAND. [CH. 11

230. CREDITS ALLOWED NON-RESIDENTS. Whenever a non-
resident individual of this State has become liable for income
tax to the State where he resides upon his net income lor the
taxable year, derived from sources within this State, and sub-
ject to taxation under this sub-title, the amount of income tax
payable by him under tins sub-title shall be credited with such
proportion of the tax so payable by him to the State where he
resides as his income subject to taxation tinder this sub-title
bears to his entire income upon which the tax so payable to
such other State was imposed; provided, that such credit shall
be allowed only if the laws of said State (a) grant a substan-
tially similar credit to residents of this State subject to income
tax under such laws, or (b) impose a tax upon the personal
income of its residents derived from sources in this State and
exempt from taxation the personal income of residents of this
State. No credit shall be allowed against the amount of the
tax on any income taxable under this sub-title which is exempt
from taxation under the laws of such other State.

231. INCOME FOR FIRST TAXABLE YEAR. The taxes imposed
by this sub-title shall first be collected and paid with respect
to the net income received during the calendar year 1937. The
income taxable during the first taxable year, in the event the
taxpayer's taxable year is a fiscal year, shall be deemed to be
that fraction of the income for the entire fiscal year equal to
the number of days remaining in the fiscal year after January
1st, 1937, divided by three hundred and sixty-five. Provided,
however, that if the taxpayer's records disclose the exact in-
come for that part of the fiscal year falling in the calendar
year 1937, then the portion of the fiscal year's income taxable
hereunder shall be the portion received or accrued during the
calendar year 1937.

In the event the taxpayer's taxable year is a fiscal year,
the income taxable during the third taxable year shall be com-
puted upon the basis of the portion of said year falling within
the calendar year 1938, calculated in the same manner as with
respect to the income during the first taxable year.

232. WHO SHALL MAKE INDIVIDUAL RETURNS. Every in-
dividual having a net income for the taxable year of one thou-
sand dollars (|l, 000) or over, if single, or if married and not
living with husband or wife, and every individual having a net
income for the taxable year of twenty-five hundred dollars
($2, 500) or over, if married and living with husband or wife,
shall make to the Comptroller a return stating specifically
the items of his entire income and the items which
he claims as deductions and exemptions allowed by this sub-
title; provided, however, that every individual having a gross
income for the taxable year of fifteen hundred dollars (f 1, 500)