Iowa Department of Revenue
www.state.ia.us/tax
2010 IA 1120S - Instructions
Iowa Income Tax Return for S Corporations
General Instructions and Information
WHO MUST FILE
Every S corporation doing business in Iowa, deriving income from sources within
Iowa, or which is domiciled in Iowa, must file an Iowa S corporation return. S
corporations, interest charge domestic international sales corporations, and foreign
sales corporations should file form IA 1120S. If the S corporation is a financial
institution, it must also file form IA 1120F. Please note: A non-Iowa S corporation
should not file only because one or more of its shareholders are Iowa residents or
because the S corporation is registered with the Iowa Secretary of State.
WHEN AND WHERE TO FILE
The IA 1120S is due on or before the last day of the fourth month after the close
of the taxable year. If you owe tax per line 11, Part III, an automatic extension
of up to six months to file will be granted only if at least 90% of the total tax
liability is paid by the due date of the return. The 6-month extension also
applies to all filers with zero balance due.
Mail returns to: Corporation Tax Return Processing, Iowa Department of
Revenue, PO Box 10468, Des Moines IA 50306-0468.
COMPOSITE FILING
S corporations may elect by the due date to file an Iowa individual income
composite tax return (IA 1040C) and pay any tax due on behalf of nonresident
shareholders. See chapter 48 of the Iowa Administrative Rules for further
information or contact Taxpayer Services at: 1-800-367-3388 (Iowa, Omaha,
Rock Island, Moline) or 515-281-3114 (Des Moines, out of state) or e-mail
idr@iowa.gov
MOTOR FUEL TAX CREDIT
If the S corporation does not have a motor fuel tax refund permit or canceled its
refund permit within the first 30 days of the year, a motor fuel credit may be
claimed by each shareholder on his or her individual income tax return. If a
motor fuel credit is claimed, complete the IA 4136 and attach it to the IA
1120S. Each shareholder’s share is recorded in Part III of the shareholder’s IA K1.
OTHER TAX CREDITS
Shareholders may qualify for various tax credits to be passed through to them by
the S corporation. The S corporation must complete the appropriate form(s) to
compute these credits (for example: IA 133; IA 3468) and attach them to the IA
1120S. The S corporation is not required to complete an IA 148 Tax Credits
Schedule. Each shareholder’s share of Iowa tax credits is recorded in Part III of
the shareholder’s IA K-1.
AMENDED RETURNS
If an amended federal return was filed for a prior period, the taxpayer must file
an amended Iowa return. Use IA 1120S to file and check the “Amended Return”
box. The IA 1120S is not to be used for sales tax or withholding credit.
FOR ADDITONAL INFORMATION
Call Taxpayer Services at 1-800-367-3388 (Iowa, Omaha, Rock Island, Moline)
or 515-281-3114 (Des Moines, out of state) or e-mail idr@iowa.gov
Completing the Return
Fill in all requested information that applies to your S corporation.
Line 4: Add lines 2 and 3.
Fiscal-year or short-period filers: Enter your beginning and ending dates
here.
Line 5: Enter 50% of federal income tax paid or accrued, including federal tax
paid on built-in gains or passive investment income.
Calendar-year filers may leave this section blank.
Line 6: Enter the amount of interest and dividends from federal securities as
shown on your federal return.
Part I: Corporation Name and Address
Fill in all requested information that applies to your S corporation.
Enter the business code number provided by the Internal Revenue Service (IRS)
for the specific industry group corresponding to the S corporation’s primary
business activity.
Enter the number of the (Iowa) county that is the commercial domicile or
principle place of business of this S corporation. Enter 00 if the S corporation
does not have a physical location in Iowa.
Enter the total number of shareholders.
If this is a first or final return, check all boxes that apply to the S corporation.
If you checked “other,” enter a short one or two word description.
Part II: Corporation Information
Complete all requested information.
Part III: Modification of Corporation Income
This schedule is to show those modifications or adjustments to federal Schedule
K income as required by chapter 53 of the Iowa Administrative Code and to
show the total modified net income from the S corporation.
Line 1: Net together items of income or loss on the federal Schedule K and
those deductions on the federal Schedule K that do not qualify as itemized
deductions. Enter that net figure on this line.
Line 2: Enter the amount of interest and dividends from foreign securities, from
securities of state and other political subdivisions, and from regulated investment
companies exempt from federal income tax.
Line 3: Enter total of other additions to Iowa income and attach schedule. Iowa
did not adopt the 30% federal bonus depreciation provisions for assets placed in
service on or after September 11, 2001, but before May 6, 2003, nor the 50%
bonus depreciation provisions for assets acquired after December 31, 2007, and
before January 1, 2011; therefore, an adjustment must be computed on form IA
4562A. Also include any amount of Iowa corporation income tax deducted in
computing federal net income.
Line 7: Enter total of other reductions from your federal income which are not
taxable for Iowa purposes and attach schedule.
Line 8: Add lines 5, 6, and 7.
Line 9: Subtract line 8 from line 4. This can result in either a positive or a
negative amount.
Line 10: Add line 9 and line 1.
Line 11: S corporations that are subject to tax on built-in gains under section
1374 of the Internal Revenue Code or passive investment income under section
1375 of the Internal Revenue Code are subject to Iowa corporation income tax
on this income to the extent received from business carried on in this state or
from sources in this state.
The starting point for computing the Iowa tax on built-in gains or passive
investment income is the amount of built-in gains or passive investment income
subject to federal tax after considering the federal income limitation.
For tax years beginning on or after January 1, 2008, an adjustment is made to
the preceding amounts for 50% of federal income tax and/or Iowa corporation
income tax deducted in computing the federal built-in gains tax. The allocation
and apportionment rules of chapter 701-54 apply if the S corporation is carrying
on business within and without the state of Iowa.
Any net operating loss carryforward arising in a taxable year for which the
corporation was a C corporation is allowed as a deduction against the net
recognized built-in gains or passive investment income of the S corporation for
the taxable year. For purposes of determining the amount of any such loss which
may be carried to any of the 15 subsequent taxable years (20 years for tax years
beginning after August 5, 1997) after the year of the net operating loss, the
amount of the net recognized built-in gain or passive investment income is
treated as taxable income. The amount of Iowa taxable built-in gains or passive
investment income is subject to tax at the same rates as C corporation income
(6%, 8%, 10%, 12%).
Under $25,000, multiply by 6%.
42-005a (05/06/11)
$25,000 to $100,000, multiply by 8% and subtract $500
$100,000 to $250,000, multiply by 10% and subtract $2,500.
Over $250,000, multiply by 12% and subtract $7,500.
Except for estimated and other advance tax payments, and any credit carryforward
under Iowa Code section 422.33 arising in a taxable year for which the corporation
was a C corporation, no credits are allowed against the built-in gains or passive
investment income tax.
Refund Requests
If a refund is due because estimated payments exceed the tax due, you must
request a refund by separate letter. Send to Iowa Department of Revenue, PO
Box 10456, Des Moines IA 50306-0456.
Part IV: Business Activity Ratio (BAR)
If an S corporation is doing business wholly within Iowa:
Skip lines 1-12 and enter 100.00 on line 13.
If the S corporation is doing business both within and without Iowa:
Complete all applicable lines. Dividends are net of special deductions.
Business income means income which arises from the S corporation’s unitary
trade or business, a part of which is conducted within Iowa. Business income
must be apportioned to Iowa by means of the business activity ratio. Investment
income may at the taxpayer’s election be included in the computation of the
business activity ratio. The taxpayer will have elected whether to include
investment income in the computation of the business activity ratio for that and
all subsequent years. Consequently, that year and for subsequent years total
investment income which is determined to be business income will be included in
the numerator as follows:
Accounts receivable interest is to be included in the numerator to the extent
allocable to Iowa.
Other interest, net dividends, capital and ordinary gains, and royalties
from intangibles must be included in the numerator if the commercial domicile
is in Iowa. All investment income that is business income, including capital
gains or losses, must be included in the computation of the business activity
ratio if the investment income is derived from intangible property that has
become an integral part of some business activity occurring regularly in or
outside of Iowa. See Iowa Rule 54.2(3) for clarification.
Capital and ordinary gains or losses, or rent and royalties from real property
must be included in the numerator if the property is located in Iowa.
For a taxpayer first apportioning income, the inclusion of investment income
determined to be business income in the business activity ratio of that year’s
initial return will be binding on all subsequent years’ returns. The election to
include business investment income in the business activity ratio can later be
changed only with permission of the Director of the Iowa Department of Revenue.
Part V: Information from Prior Period Iowa Return
Enter the requested information from the Iowa return for previous tax period.
Federal S Corporation Return
A copy of the federal corporation return, form 1120S, and all other supporting
schedules, (not including the federal K-1) must be attached to this form.
WHO MUST SIGN THE RETURN
The corporation return must be signed by the president or other duly authorized
officer.
Instructions for IA 1120S Schedule K-1
Shareholder’s Share of Income, Deductions, & Modifications
The Iowa 1120S K-1 shows each shareholder’s share of modifications,
all-source income, Iowa apportioned income, and Iowa tax credits. You
must provide complete information for each shareholder in an acceptable
format. For your convenience, forms IA 1120S and IA 1120S Schedule
K-1 are provided on our Web site.
Individual shareholders: When completing your individual IA 1040,
report the column (a) items. In addition, individual nonresident
shareholders report amounts from column (c) on Iowa form IA 126,
“Iowa Nonresident and Part-year Resident Credit.” If the S corporation
does business within and without Iowa, the business activity ratio in
column (b) must be provided to each Iowa resident shareholder for
purposes of computing the S Corporation Apportionment Credit, form
IA 134, if they elect that option.
Part I: Corporation Information
Enter name and FEIN of S corporation on each IA K-1 form.
Shareholder information
Enter name, Social Security Number, or FEIN, and address of each
shareholder.
Check the amended box if the K-1 is part of an amended 1120S return.
Check the appropriate box for the shareholder’s entity type.
Check either the resident shareholder or nonresident shareholder box,
based on the shareholder’s current address.
Enter shareholder’s percentage of ownership in the S corporation. Carry
this percentage to 6 decimal places if needed.
Enter the S corporation’s Iowa receipts, as reported on page 1, Part IV,
line 12, column (A) of the IA 1120S*.
Enter the S corporation’s total receipts, as reported on page 1, Part IV,
line 12, column (B) of the IA 1120S*.
* If BAR is 100%, enter the Gross Receipts from line 1a, page 1 of
the federal 1120S.
Enter the S corporation’s BAR from page 1, Part IV, line 13 of the IA
1120S.
PART II: SHAREHOLDER’S PRO RATA SHARE ITEMS:
Column (a), lines 1 through 14(f):
Enter the same amounts as shown on the federal K-1. These figures are
reportable as part of income/loss on your IA 1040.
Leave Columns (b) & (c) blank for resident shareholders.
Column (b), lines 1 through 14(f):
For nonresident shareholders only, enter the S corporation’s single factor
Iowa Business Activity Ratio (BAR). The BAR in column (b) must be
applied equally to each line item in column (a); no method of
“separate accounting” is allowed.
Column (c), lines 1 through 14(f):
For nonresident shareholders only, multiply the amounts in column (a)
by the percentage in column (b) and enter the product in column (c) for
each line item. This is the amount apportionable to Iowa. Nonresidents:
These figures may be reportable on your IA 126 nonresident schedule.
Line 14(f) schedule: Show name and amount for each item reported on
line 14(f).
Line 15(a): Enter the shareholder’s all-source modifications. This figure
is equal to the S corporation’s all-source modifications multiplied by the
shareholder’s ownership percentage. Individual shareholders: If this
figure is a positive amount, report it on line 14 of your IA 1040. If this
figure is a negative amount, report it on line 24 of your IA 1040.
Line 15(b): For nonresident shareholders only, enter the Iowa BAR.
Line 15(c): For nonresident shareholders only, multiply line 15(a) by
the percentage on line 15(b) and enter here. Nonresident Shareholders:
If this entry is a positive amount, also enter it on line 14 of your IA 126
form. If this entry is a negative amount, enter it on line 24 of your IA
126 form.
Part III: Shareholder’s Portion of IA Credits/Withholding: If the S
corporation submitted Iowa withholding for the shareholder, enter it in the
current-year amount column on the first line of the schedule. If none, enter
zero.
For all other credits, enter the tax credit name in the first column. If
you received the credit from an Iowa governmental agency, enter your
certificate number in the second column. Enter the shareholder’s share of
the current-year amount in the third column.
42-005b (10/04/10)