MO-1040A Page 4
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• Complete this section only if you itemized deductions on your federal return (see the information on page 6 and 8).
• Attach a copy of your Federal Form 1040 (pages 1 and 2) and Federal Schedule A.
• If you are subject to “additional Medicare tax”, attach a copy of Federal Form 8959.
1. Total federal itemized deductions (from Federal Form 1040, Line 40) .....................
2. 2017 Social security tax .........................................................
3. 2017 Railroad retirement tax - (Tier I and Tier II)......................................
4. 2017 Medicare tax (
see instructions on page 8) ........................................
5. 2017 Self-employment tax (see instructions on page 8) ................................
6. Total - Add Lines 1 through 5.....................................................
7. State and local income taxes (from Federal Schedule A,
Line 5 or see the worksheet below) .........................
8. Earnings taxes included in Line 7 (see instructions on page 8)....
9. Net state income taxes - Subtract Line 8 from Line 7 or enter Line 8 from worksheet below ....
Form MO-1040A...................................................................
Note: If Line 10 is less than your federal standard deduction, see information on page 6.
Complete this worksheet only if your federal adjusted gross income from Federal Form 1040, Line 37 is more than $313,800
if married ling combined or qualifying widow(er), $287,650 if head of household, $261,500 if single or claimed as a dependent,
or $156,900 if married ling separate. If your federal adjusted gross income is less than or equal to these amounts, do not complete
this worksheet. Attach a copy of your Federal Itemized Deduction Worksheet (page A-12 of Federal Schedule A instructions).
1. Enter amount from Federal Itemized Deduction Worksheet, Line 3 (see page A-12 of Federal
Schedule A instructions). If $0 or less, enter “0” .....................................
2. Enter amount from Federal Itemized Deduction Worksheet, Line 9 (see Federal Schedule A
instructions)..................................................................
3. State and local income taxes from Federal Form 1040, Schedule A, Line 5 ................
4. Earnings taxes included on Federal Form 1040, Schedule A, Line 5 .....................
5. Subtract Line 4 from Line 3 .....................................................
6. Divide Line 5 by Line 1.........................................................
7. Multiply Line 2 by Line 6........................................................
8. Subtract Line 7 from Line 5. Enter here and on Missouri Itemized Deductions, Line 9, above ..
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*17334040006*
17334040006
Mail To: Balance Due: Refund or No Amount Due: Phone (Balance Due): (573) 751-7200
Missouri Department of Revenue Missouri Department of Revenue Phone (Refund or No Amount Due): (573) 751-3505
P.O. Box 3370 P.O. Box 3222 Fax: (573) 526-1881
Jefferson City, MO 65105-3370 Jefferson City, MO 65105-3222 E-mail: income@dor.mo.gov
Visit http://dor.mo.gov/personal/individual/ for additional information.
(Revised 12-2017)
Worksheet for Net State Income Taxes,
Line 9 of Missouri Itemized Deductions
Missouri Itemized Deductions
%
MO-1040A Page 4
10. Missouri Itemized Deductions - Subtract Line 9 from Line 6. Enter here and on Line 7 of
Carry amount to 1040A Line 7