Corporation Estimated Income Worksheet
Keep for your records
https://tax.iowa.gov
1.
Net income from federal return ............................................................... 1. $
2. 50% of federal tax refund ............................................................................... 2. $
3. Other additions .............................................................................................. 3. $
4. Net income after additions. Add lines 1 through 3. .......................................... 4. $
5. 50% of federal tax paid or accrued ................................................................. 5. $
6. Other reductions ............................................................................................ 6. $ ___________
7. Total reductions. Add lines 5 and 6. ................................................................ 7. $
8. Income before net operating loss. Subtract line 7 from line 4. ......................... 8. $
9. Nonbusiness income ...................................................................................... 9. $
10. Income subject to apportionment. Subtract line 9 from line 8. ......................... 10. $
11. Business Activity Ratio .................................................................................. 11.
%
12. Apportioned income. Multiply line 10 by line 11. ............................................. 12. $
13. Nonbusiness income allocable to Iowa .......................................................... 13. $
14. Income before net operating loss: Add lines 12 and 13. ................................. 14. $
15. Net operating loss deduction ......................................................................... 15. $
16. Income subject to tax. Subtract line 15 from line 14 ....................................... 16. $
17. Computed tax. Use Tax Rates below ............................................................ 17. $
18. Estimated alternative minimum tax ................................................................ 18. $
19. Total tax. Add lines 17 and 18. ...................................................................... 19. $
20. Total credits .................................................................................................. 20. $
21. Tax after credits. Subtract line 20 from line 19. .............................................. 21. $
22. Payments previously made for current period estimate tax ............................. 22. $
23. Unpaid balance. Subtract line 22 from line 21. ............................................... 23. $
24. Computation of installment. If first installment is to be filed on:
last day of the 4th month, enter 1/4 of line 23, or .................. $
last day of the 6th month, enter 1/3 of line 23, or ............... $
last day of the 9th month, enter 1/2 of line 23, or................ $
last day of the 12th month, enter all of line 23 ................... $
Tax Rates
If income shown on line 16 is:
Under $25,000; multiply line 16 by 6%.
$25,000 to $100,000; multiply line 16 by 8% and subtract $500.
$100,000 to $250,000; multiply line 16 by 10% and subtract $2,500.
Over $250,000; multiply line 16 by 12% and subtract $7,500.
Estimated Tax Payment Schedule
A
D
B
C
Date
Amount to be paid
Computed Installment
Prior period
(line 24)
Overpayment
(column B less column C)
1
2
3
4
45-010b (07/19/16)