Free Form 1120-S Generator Fill out your S corporation return

Type in your S corporation’s figures and watch the official 2025 Form 1120-S fill in, page by page. Then download the filled return as a PDF or print it for review and signature.

View the form on IRS.gov

How to fill it out: Instructions for Form 1120-S

Corporation and tax year

This generator fills page 1, Schedule B, Schedule K, and Schedule M-2 (pages 1 to 5). Schedules L and M-1 aren’t filled: they’re needed only when you answer No to Schedule B, question 11, and then come from the official form or tax software.

Corporation name *

The corporation’s legal name, as it appears in its charter or other founding document.

Employer identification number (EIN) *

Item D. The corporation’s 9-digit EIN, not a shareholder’s SSN.

We applied for an EIN but haven’t received it yet The form then shows “Applied For” and the date you applied, as the instructions ask. A return that’s e-filed needs the EIN itself.

Date you applied for the EIN

A · S election effective date *

E · Date incorporated *

B · Business activity code *

Find the code in the list of principal business activity codes at the end of the instructions.

Tax year

Calendar year 2025 Fiscal or short year

Tax year begins

Tax year ends

Use this 2025 form for a fiscal or short year that begins in 2025.

Address

The corporation’s principal office or place of business, not the address of its registered agent.

U.S. address Foreign address

Number and street, or P.O. box *

Room or suite (optional)

City or town *

State *

ZIP code *

State or province

Postal code

Country

If mail goes to someone else, such as an accountant, start the street line with “C/O” and their name.

Assets, shareholders, and return type

F · Total assets at the end of the tax year *

Enter 0 if there are none. If you complete Schedule L, use line 15, column (d).

I · Number of shareholders during any part of the tax year *

G · Is the corporation electing to be an S corporation beginning with this tax year?

Yes No

If Yes, attach Form 2553 if it isn’t already filed.

H · Check if this is

Final return

Name change

Address change

Amended return

S election termination

C · Schedule M-3 and J · grouped activities If they apply

C · Schedule M-3 attached Required instead of Schedule M-1 when total assets are $10 million or more.

J(1) · Aggregated activities for section 465 at-risk purposes

J(2) · Grouped activities for section 469 passive activity purposes

Income

Lines 1a to 6. Only trade or business income goes here; rental and portfolio income go on Schedule K. Leave lines that don’t apply blank. For a loss, type a minus sign first; the form shows it in parentheses.

1a · Gross receipts or sales

1b · Returns and allowances

1c · Balance (line 1a minus line 1b)

2 · Cost of goods sold (attach Form 1125-A)

3 · Gross profit (line 1c minus line 2)

4 · Net gain (loss) from Form 4797, Part II, line 17

5 · Other income (loss) (attach statement)

6 · Total income (loss) (add lines 3 through 5)

Deductions

Lines 7 to 22. The instructions explain the limits on several of these deductions.

7 · Compensation of officers (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

14 · Depreciation from Form 4562 not claimed elsewhere

15 · Depletion (not oil and gas depletion)

16 · Advertising

17 · Pension, profit-sharing, etc., plans

18 · Employee benefit programs

19 · Energy efficient commercial buildings deduction (attach Form 7205)

20 · Other deductions (attach statement)

21 · Total deductions (add lines 7 through 20)

22 · Ordinary business income (loss) (line 6 minus line 21)

Tax and payments

Lines 23a to 28. Most S corporations owe no income tax here; these lines cover the few taxes an S corporation can owe itself.

23a · Excess net passive income or LIFO recapture tax

23b · Tax from Schedule D (Form 1120-S)

23c · Add lines 23a and 23b

The instructions list additional taxes that can be included here.

24a · Current year’s estimated tax payments and preceding year’s overpayment credited

24b · Tax deposited with Form 7004

24c · Credit for federal tax paid on fuels (attach Form 4136)

24d · Elective payment election amount from Form 3800

24z · Add lines 24a through 24d

25 · Estimated tax penalty

Form 2220 is attached (line 25)

26 · Amount owed

If line 24z is smaller than the total of lines 23c and 25. See IRS.gov/Payments for ways to pay.

27 · Overpayment

If line 24z is larger than the total of lines 23c and 25.

28a · Overpayment credited to 2026 estimated tax

28b · Overpayment refunded

Direct deposit of the refund (lines 28c–28e) Optional

28c · Routing number

28d · Account type

Checking Savings

28e · Account number

Up to 17 numbers and letters. Include hyphens, but no spaces or other symbols.

Schedule B: other information (1–8)

Page 2 of the form. The IRS expects an answer to every question that applies.

1 · Accounting method

Cash Accrual Other

Describe the method

2a · Business activity

2b · Product or service

Shareholders and ownership

3 · At any time during the tax year, was any shareholder a disregarded entity, a trust, an estate, or a nominee or similar person?

Yes No

If Yes, attach Schedule B-1, Information on Certain Shareholders of an S Corporation.

4a · At year end, did the corporation own 20% or more directly, or 50% or more directly or indirectly, of the stock of any foreign or domestic corporation?

Yes No

Corporation 1

Name of corporation

EIN (if any)

Country of incorporation

% of stock owned

QSub election date

Corporation 2

Name of corporation

EIN (if any)

Country of incorporation

% of stock owned

QSub election date

Corporation 3

Name of corporation

EIN (if any)

Country of incorporation

% of stock owned

QSub election date

Corporation 4

Name of corporation

EIN (if any)

Country of incorporation

% of stock owned

QSub election date

Enter a QSub election date only if the corporation owns 100% and a qualified subchapter S subsidiary election was made.

4b · At year end, did the corporation own 20% or more directly, or 50% or more directly or indirectly, of a partnership’s profit, loss, or capital, or of the beneficial interest of a trust?

Yes No

Entity 1

Name of entity

EIN (if any)

Type of entity

Country of organization

Maximum % owned

Entity 2

Name of entity

EIN (if any)

Type of entity

Country of organization

Maximum % owned

Entity 3

Name of entity

EIN (if any)

Type of entity

Country of organization

Maximum % owned

Entity 4

Name of entity

EIN (if any)

Type of entity

Country of organization

Maximum % owned

The percentage is the maximum share owned in profit, loss, or capital.

Stock

5a · At year end, did the corporation have any outstanding shares of restricted stock?

Yes No

(i) Total shares of restricted stock

(ii) Total shares of non-restricted stock

5b · At year end, did the corporation have any outstanding stock options, warrants, or similar instruments?

Yes No

(i) Total shares of stock outstanding at the end of the tax year

(ii) Total shares outstanding if all instruments were executed

Other items

6 · Has the corporation filed, or is it required to file, Form 8918, Material Advisor Disclosure Statement?

Yes No

7 · The corporation issued publicly offered debt instruments with original issue discount If checked, the corporation may have to file Form 8281.

8 · Net unrealized built-in gain, reduced by net recognized built-in gain from prior years

Only if the corporation was a C corporation before its S election, or acquired an asset with a basis carried over from a C corporation.

Schedule B: other information (9–16)

Pages 2 and 3 of the form.

9 · Did the corporation have a section 163(j) election in effect for a real property trade or business or a farming business?

Yes No

10 · Does the corporation meet any of the business interest expense conditions on line 10a–10c?

Yes No

It owns a pass-through entity with excess business interest expense, its average annual gross receipts for the 3 prior years are over $31 million and it has business interest expense, or it’s a tax shelter with business interest expense. If Yes, attach Form 8990.

11 · Were the corporation’s total receipts for the tax year and its total assets at year end both less than $250,000?

Yes No

If Yes, the corporation doesn’t have to complete Schedules L and M-1. The instructions explain what counts as total receipts.

12 · Did the corporation have non-shareholder debt that was canceled, forgiven, or modified to reduce the principal amount?

Yes No

Amount of principal reduction

13 · Was a qualified subchapter S subsidiary election terminated or revoked during the tax year?

Yes No

14a · Did the corporation make any payments that would require it to file Forms 1099?

Yes No

14b · Did or will the corporation file the required Forms 1099?

Yes No

15 · Does the corporation intend to self-certify as a Qualified Opportunity Fund?

Yes No

Amount from Form 8996, line 15 (if any)

Complete and attach Form 8996.

16 · Did the corporation receive a digital asset, or sell, exchange, or otherwise dispose of a digital asset or a financial interest in one?

Yes No

Schedule K: income, deductions, and credits

Lines 1 to 13g on page 3: the corporation’s totals, which are split among shareholders on Schedules K-1. For a loss, type a minus sign first.

Income (loss)

1 · Ordinary business income (loss) (page 1, line 22)

2 · Net rental real estate income (loss) (attach Form 8825)

3a · Other gross rental income (loss)

3b · Expenses from other rental activities (attach statement)

3c · Other net rental income (loss) (line 3a minus line 3b)

4 · Interest income

5a · Ordinary dividends

5b · Qualified dividends

6 · Royalties

7 · Net short-term capital gain (loss) (attach Schedule D)

8a · Net long-term capital gain (loss) (attach Schedule D)

8b · Collectibles (28%) gain (loss)

8c · Unrecaptured section 1250 gain (attach statement)

9 · Net section 1231 gain (loss) (attach Form 4797)

10 · Other income (loss)

Line 10 type

Deductions

11 · Section 179 deduction (attach Form 4562)

12a · Cash charitable contributions

12b · Noncash charitable contributions

12c · Investment interest expense

12d · Section 59(e)(2) expenditures

Line 12d type

12e · Other deductions

Line 12e type

Credits on lines 13a–13g If they apply

13a · Low-income housing credit (section 42(j)(5))

13b · Low-income housing credit (other)

13c · Qualified rehabilitation expenditures (rental real estate)

13d · Other rental real estate credits

Line 13d type

13e · Other rental credits

Line 13e type

13f · Biofuel producer credit (attach Form 6478)

13g · Other credits

Line 13g type

Schedule K: other items and reconciliation

Lines 14a to 18 on pages 3 and 4.

14a · Schedule K-2 (Form 1120-S) is attached: the corporation reports items of international tax relevance

14b · The corporation qualified for an exception to filing Schedule K-2

Alternative minimum tax items on lines 15a–15f If they apply

15a · Post-1986 depreciation adjustment

15b · Adjusted gain or loss

15c · Depletion (other than oil and gas)

15d · Oil, gas, and geothermal properties: gross income

15e · Oil, gas, and geothermal properties: deductions

15f · Other AMT items (attach statement)

Items affecting shareholder basis

16a · Tax-exempt interest income

16b · Other tax-exempt income

16c · Nondeductible expenses

16d · Distributions (attach statement if required)

16e · Repayment of loans from shareholders

16f · Foreign taxes paid or accrued

Other information

17a · Investment income

17b · Investment expenses

17c · Dividend distributions paid from accumulated earnings and profits

17d: report other items and amounts on an attached statement.

18 · Income (loss) reconciliation

Lines 1 through 10 combined, minus lines 11 through 12e and 16f.

Schedule M-2: AAA and other accounts

Page 5 of the form. Most S corporations only use column (a), the accumulated adjustments account (AAA). Lines 4 and 5 print in parentheses: enter them as positive numbers. Balances can be negative: type a minus sign first.

(a) Accumulated adjustments account

1 · Balance at beginning of tax year

2 · Ordinary income from page 1, line 22

3 · Other additions

4 · Loss from page 1, line 22

5 · Other reductions

6 · Combine lines 1 through 5

7 · Distributions

8 · Balance at end of tax year (line 6 minus line 7)

(b) Shareholders’ undistributed taxable income previously taxed If it applies

1 · Balance at beginning of tax year

6 · Combine lines 1 through 5

7 · Distributions

8 · Balance at end of tax year

1 · Balance at beginning of tax year

6 · Combine lines 1 through 5

7 · Distributions

8 · Balance at end of tax year

(d) Other adjustments account If it applies

1 · Balance at beginning of tax year

3 · Other additions

5 · Other reductions

6 · Combine lines 1 through 5

7 · Distributions

8 · Balance at end of tax year

Sign the return

An officer signs: the president, vice president, treasurer, assistant treasurer, chief accounting officer, or another officer authorized to sign.

Read the declaration

Under penalties of perjury, I declare that I have examined this return, including accompanying schedules and statements, and to the best of my knowledge and belief, it is true, correct, and complete. Declaration of preparer (other than taxpayer) is based on all information of which preparer has any knowledge.

Sign by hand after printing. Form 1120-S isn’t on the IRS list of forms it accepts electronic signatures on, so an authorized officer signs and dates the return in ink. Corporations that must e-file sign electronically through their tax software instead.

Date (optional)

Leave it blank to date it when you sign.

Title *

May the IRS discuss this return with the preparer shown below?

Yes No

Yes lets the IRS call the paid preparer about processing questions. It doesn’t let them represent the corporation.

Paid preparer Only if someone was paid to prepare it

Leave this blank if an officer or employee of the corporation prepared the return.

Preparer’s name

Preparer’s signature

Draw Type

Sign here

Date

PTIN

The preparer is self-employed

Firm’s name

Firm’s EIN

Phone no.

Firm’s address

0 of 11 required

Preview

0 of 11 required

Complete the required fields to download or print your Form 1120-S.

Still needed:

Downloaded. Have an authorized officer sign and date it in ink. Attach a copy of every shareholder’s Schedule K-1, Schedules L and M-1 if you answered No to Schedule B, question 11, and any other forms and statements the return needs. Give each shareholder their K-1. Corporations that file 10 or more returns a year must e-file instead of mailing.

Page

View the form on IRS.gov

How to fill it out: Instructions for Form 1120-S

Disclaimer: forms.app offers this Form 1120-S generator and the IRS form it fills as a free courtesy. forms.app is not affiliated with the Internal Revenue Service, doesn’t prepare or file returns or Schedules K-1 on your behalf, doesn’t check your figures, and doesn’t provide tax, legal, or accounting advice. The corporation is responsible for a complete and accurate return, for every required schedule and attachment, and for filing on time, electronically when the e-file rules apply. Form 1120-S is published by the IRS; find the latest version and instructions at irs.gov/Form1120S. For anything beyond copying figures onto the form, talk to a CPA, enrolled agent, or tax attorney. Found something on this page that’s wrong or out of date? Let us know.

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Form 1120-S, explained

Form 1120-S, U.S. Income Tax Return for an S Corporation, is the yearly return of a corporation that elected S corporation status on Form 2553. It reports the corporation’s income, deductions, and credits, and passes them through to the shareholders, who pay tax on their shares on their own returns.

Because the income passes through, page 1 usually shows little or no tax: the work is in Schedule K, which totals each type of income, deduction, and credit, and in the Schedules K-1 that split those totals among the shareholders. The return is generally due by the 15th day of the 3rd month after the tax year ends, which for calendar year 2025 is March 16, 2026. Form 7004 gives an automatic extension of time to file.

Getting your Form 1120-S done in minutes

Work through the steps in the order of the form: the corporation’s identification and items A to J, income and deductions on page 1, the Schedule B questions, the Schedule K totals, and the accumulated adjustments account on Schedule M-2. Every entry appears on the official form as you type. The generator copies your figures without adding them up, so check each total against your books.

It fills pages 1 to 5 except Schedules L and M-1, which a corporation needs only if it answers No to Schedule B, question 11; complete those from the official PDF or tax software. It doesn’t produce Schedules K-1 either. When the required fields are done, download the PDF or print it. Most S corporations file through tax software, and those that file 10 or more returns of any type in a calendar year must e-file. Need a different form? Browse all tax form generators.

Answers to common Form 1120-S questions

Who has to file Form 1120-S?

A corporation or other entity that elected to be an S corporation on Form 2553, had the election accepted by the IRS, and still has it in effect. Don’t file Form 1120-S for a tax year before the election takes effect. Corporations without an S election file Form 1120.

When is Form 1120-S due?

By the 15th day of the 3rd month after the tax year ends. For a calendar-year S corporation, the 2025 return is due March 16, 2026, because March 15 falls on a Sunday. File Form 7004 by that date for an automatic extension of time to file.

Do I have to e-file Form 1120-S?

An S corporation that files 10 or more returns of any type during the calendar year, counting income tax, employment tax, excise tax, and information returns, must e-file unless it gets a waiver. Others may mail a paper return to the address for their state and total assets; see Where to file on IRS.gov.

Which pages does this generator fill?

Page 1, Schedule B, Schedule K, and Schedule M-2, across pages 1 to 5. It leaves Schedule L (balance sheets) and Schedule M-1 (book-to-tax reconciliation) blank. A corporation that answers Yes to Schedule B, question 11, because its total receipts and total assets are both under $250,000, doesn’t have to complete them. Otherwise, fill them in from the official PDF or with tax software.

What about Schedules K-1?

Each shareholder gets a Schedule K-1 (Form 1120-S) showing their share of the Schedule K items, and a copy of every K-1 is attached to the return filed with the IRS. This generator fills Form 1120-S itself, not the K-1s.

Does the generator do the math?

No. It places the amounts you type on the right lines and leaves the arithmetic to you. Figure each line with the instructions, your books, or tax software, and review the totals before the return is signed.

How do I correct a Form 1120-S I already filed?

File a new Form 1120-S with the Amended return box checked in item H, and attach a statement listing each changed line, the corrected amount, and the reason. If a shareholder’s K-1 changes, file an amended K-1 with it and give the shareholder a copy.

Is my information safe?

Everything you type stays in your browser. The PDF is created on your device, and nothing you enter, including the EIN and bank details, is uploaded to or saved by forms.app. Nothing is kept after you close the page, so download your return before you leave.

Is this Form 1120-S generator free?

Yes. You can fill out, download, and print Form 1120-S as often as you need, without paying or creating an account.

Your Form 1120-S isn’t ready to print yet

Fill in the required fields (corporation name, EIN, S election date, date incorporated, business activity code, address, total assets, number of shareholders, and the officer’s title), then print again.

Form 1120-S preview Click any box to edit it