U.S. Income Tax Return for an S Corporation - Tax form summary and key line items

Sep 19, 2026

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U.S. Income Tax Return for an S Corporation (Form 1120-S) covers filing eligibility, election and status checkboxes, and core identification fields such as employer identification number, business activity code, incorporation date, and asset totals. It includes shareholder counts and special checks (e.g., Schedule M-3, final return, name/address change, amended return). The form details income sections (gross receipts, cost of goods sold, deductions categories) and tax/payment sections (estimated payments, credits, refunds, amount owed) plus signatory declarations under penalties of perjury.

LanguageEnglish

CategoryInvoices

FormatPDF

Pages5

Reading Time2 min

AccessFree to download

Election, identification, and checks

Filing eligibility and S election

Shareholders count and special status boxes

Income and deductions

Income lines and adjustments

Deduction lines and total deductions

Tax and payments

Taxes, credits, and estimated payments

Amount owed, overpayment, and refund/credit

Signatures

# U.S.Income Tax Return for an S Corporation Do not file this form unless the corporation has filed or is attaching Form 2553 to elect to be an S corporation. | nternal Revenue Service | Go to www.irs.gov/Form1120S for instructions and the latest information. | | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | ,20
For calendar year 2025 or tax year beginning
,2025,ending | | | | | | | | | | A S election effective date | | Name | | | | | D Employeridentification number | | | B Business activity code
number(see instructions) | | Number and street.If aP.O.box,see instructions. | | | | Room or suite no. | E Date incorporated | | | | | City or town | State or province | Country | ZIP or foreign postal code | | F Total assets (see instructions)
$ | | | C Check if Sch.M-3 attached | | | | | | | | | G Is the corporation electing to be an S corporation beginning with this tax year?See instructions.□Yes□No H Check if:(1)□Final retum(2)□Name change (3)□Address change (4)□Amended return(5 □Selection termination I Enter the number of shareholders who were shareholders during any part of the tax year .··... J Checkif corporation:(1)□Aggregated actvies for section 465at-risk purposes (2)□Grouped activities for section 469 passive activity purposes Caution:Include only trade or business income and expenses on lines 1a through 22.See the instructions for more information. | Income | b Less returns andallowances__
c Balance
1a Gross receipts or sales
2 Cost of goods sold (attach Form 1125-A)...........
3 Gross profit.Subtract line 2 from line 1c .....
4 Net gain(loss)from Form 4797,Part II,line 17(attach Form 4797)
5 Other income(loss)(see instructions-attach statement)..
6 Total income (loss).Add lines 3 through 5 . .. ... | | | | | | | | | | 1c | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | | | | | | | | | | | 2 | | | | | | | | | | | | | | | 3 | | | | | | | | | | | | | | | 4 | | | | | | | | | | | | | | | 5 | | | | | | | | | | | | | | | 6 | | | | Deductions(see instructions for limitations | 7 Compensation of officers(see instructions-attach Form 1125-E).
8 Salaries and wages (less employment credits) .....
9 Repairs and maintenance.. ..... ...
10 Bad debts . ..... ..... ..
11 Rents . . . .. .. . . .
12 Taxes and licenses.......
13 Interest (see instructions).....
562)
14 Depreciation from Form 4562 not claimed on Formn
15 Depletion(do not deduct oil and gas depletion)
16 Advertising ..... ..... ...
17 Pension,profit-sharing,etc.,plans .......
18 Employee benefit programs ...·.·...
19 Energy efficient commercial buildings deduction (attach Fom 7205) .
20 Other deductions (attach statement) ..... ..... .
21 Total deductions.Add lines 7 through 20 ... ..
22 Ordinary business income(loss).Subtract line 21 from line 6... | | | | | | | | | | 7 | | | | | | | | | | | | | | | 8 | | | | | | | | | | | | | | | 9 | | | | | | | | | | | | | | | 10 | | | | | | | | | | | | | | | 11 | | | | | | | | | | | | | | | 12 | | | | | | | | | | | | | | | 13 | | | | | | | | | | | | | | | 14 | | | | | | | | | | | | | | | 15 | | | | | | | | | | | | | | | 16 | | | | | | | | | | | | | | | 17 | | | | | | | | | | | | | | | 18 | | | | | | | | | | | | | | | 19 | | | | | | | | | | | | | | | 20 | | | | | | | | | | | | | | | 21 | | | | | | | | | | | | | | | 22 | | | | Tax and Payments | 23a Excess net passive income or LIFO recapture tax(s

FAQs

When must a corporation file Form 1120-S?

It should not be filed unless the corporation has filed or is attaching Form 2553 to elect S corporation status.

Which information does the form collect from the corporation?

It requests items such as effective election information, business identification (including employer identification number and activity code), incorporation date, assets, and the number of shareholders during the tax year.

What major sections are included in the return?

The form includes income and deductions lines, followed by tax and payment calculations such as estimated payments, credits, penalties, amount owed, or overpayment, and ends with signatures and declarations.

Sep 19, 2026

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