Form 1120-S Checklist: Tax Year 2016
Form 1120-S for tax year 2016 is a pass-through entity return that requires separate Schedule K-1 reporting for each of up to 100 shareholders only. Elections made in 2016 remain subject to strict shareholder-type restrictions, including no nonresident aliens, no C corporations, and no partnerships as direct or indirect owners.
Estimated tax payments on built-in gains and excess passive income taxes were due quarterly in 2016 for corporations subject to these limited entity-level taxes. The form maintains the fundamental pass-through structure where income, deductions, and credits flow through to shareholders who report these items on their individual tax returns according to their ownership percentages and holding periods.
Year-Specific Program Applicability
The 2016 Instructions for Form 1120-S contain no new relief programs or stimulus reconciliation requirements unique to calendar year 2016. Existing rules for built-in gains tax applicable within five years of S election for former C corporations converting from C corporation status and excess net passive income tax triggered if the corporation has accumulated earnings and profits and derives more than twenty-five percent of gross receipts from passive investment income for three consecutive tax years remained in effect without modification. These corporate-level taxes represent exceptions to the general pass-through treatment and serve as penalty mechanisms to discourage specific tax avoidance strategies.
Comprehensive Ten-Step Filing Process
Step 1: Verify Valid S Election and Shareholder Eligibility
Confirm that Form 2553 (Election by a Small Business Corporation) was accepted by the IRS and remains in effect for tax year 2016. Review the IRS acceptance letter and verify no terminating events occurred during 2016. Verify all shareholders throughout the tax year are permissible types, including individuals who are U.S. citizens or resident aliens, qualifying trusts such as grantor trusts, qualified subchapter S trusts, or electing small business trusts, and estates of deceased shareholders.
Confirm no shareholder is a nonresident alien, no shareholder is a C corporation, and no shareholder is a partnership, as any of these prohibited ownership situations immediately terminates S election effective on the date of the disqualifying transfer.
Step 2: Gather Shareholder Information and Documentation
Obtain complete legal name, current mailing address, and taxpayer identification number, including Social Security Number for individual shareholders or Employer Identification Number for trust and estate shareholders as of year-end 2016. Collect comprehensive documentation for each shareholder’s allocable share of ordinary business income or loss, net rental real estate income or loss, other net rental income or loss, interest income, dividend income, royalty income, net short-term and long-term capital gains and losses, net section 1231 gain or loss, charitable contributions by limitation category, section 179 deduction, other deductions, and tax credits.
Maintain detailed basis records tracking each shareholder’s stock basis and debt basis throughout the year, as these calculations determine the deductibility of losses and the tax treatment of distributions.
Step 3: Determine Schedules L, M-1, and M-2 Filing Requirements
Calculate total receipts for the tax year by summing all income items reported on the return and total assets at the end of the year from the corporation’s books and records. Suppose total receipts for the tax year and total year-end assets are both less than $250,000. In that case, Schedules L (Balance Sheets per Books), M-1 (Reconciliation of Income per Books With Income per Return), and M-2 (Analysis of Accumulated Adjustments Account, Other Adjustments Account, and Shareholders’ Undistributed Taxable Income Previously Taxed) are not required and may be omitted.
Suppose either threshold equals or exceeds $250,000. In that case, all three schedules must be completed and filed with the return, providing the IRS with detailed financial information, a book-to-tax reconciliation, and distribution tracking details.
Step 4: Determine Whether Schedule M-3 Must Replace Schedule M-1
Suppose total assets at the end of the tax year are ten million dollars or more, as shown on Schedule L line 17 column (d). In that case, the corporation must file Schedule M-3 (Net Income Reconciliation for S Corporations With Total Assets of $10 Million or More) in place of Schedule M-1. Schedule M-3 Parts II and III must be completed in their entirety, providing significantly more detailed book-to-tax reconciliation information, including temporary and permanent differences categorized by type. If total assets are less than $10 million, Schedule M-1 remains the applicable reconciliation schedule, and Schedule M-3 is not required.
Step 5: Calculate and Report Estimated Tax Obligations
Determine whether the corporation owes estimated tax for 2016 on any of the following corporate-level taxes: built-in gains tax on net recognized built-in gain during the recognition period following conversion from C corporation status, excess net passive income tax when the corporation has accumulated earnings and profits and passive investment income exceeds twenty-five percent of gross receipts, or investment credit recapture tax from recapture of previously claimed investment tax credits.
If the combined total of these three taxes is $500 or more, the corporation must make quarterly installment payments. For calendar year 2016, estimated tax installments were due April 18, June 15, September 15, and December 15, 2016.
Step 6: Complete Form 1120-S Header and Income and Deduction Lines
Enter the principal business activity code in Item B using the codes from the instructions that most accurately describe the corporation’s primary business activity. Enter the Employer Identification Number in Item D and total assets from Schedule L line 17 column (d) in Item F. Report gross receipts or sales on line 1a, calculate and report cost of goods sold using Form 1125-A on line 2, determine gross profit on line 3, report net gain or loss from Form 4797 on line 4, and enter other income on line 5.
Calculate total income on line 6. Report all allowable deductions on lines 7 through 19 using the corporation’s permitted accounting method, including compensation of officers, salaries and wages, repairs and maintenance, bad debts, rents, taxes and licenses, interest, depreciation, depletion, advertising, pension and profit-sharing plans, employee benefit programs, and other deductions. Calculate total deductions on line 20 and ordinary business income or loss on line 21.
Step 7: Prepare Schedule K and Individual Schedules K-1
Complete Schedule K with the corporation’s aggregate totals for all income, deductions, and credits that pass through to shareholders. Generate a separate Schedule K-1 for each shareholder reflecting that shareholder’s pro-rata share calculated by multiplying each Schedule K item by the shareholder’s ownership percentage and holding period fraction if ownership changed during the year. Use the specific code designations ranging from Code A through Code ZZ for line 12 deductions, including charitable contributions by limitation category, investment interest expense, deductions related to portfolio income, deductions related to rental real estate activities, and other deductions.
Use the applicable codes for line 13 credits, including low-income housing credit, qualified rehabilitation expenditures credit, other rental real estate credits, other rental credits, and other credits. Ensure Schedule K totals equal the sum of all shareholder K-1 allocations as a mathematical verification of proper allocation.
Step 8: Gather and Assemble Required Attachments in Prescribed Order
Attach all required forms and schedules after page 5 of Form 1120-S in the following prescribed order: Schedule N (Tax, Refundable Credits, and Payments) if the corporation has foreign source income or foreign taxes, Form 1125-A (Cost of Goods Sold) if applicable to the business, Form 1125-E (Compensation of Officers) if required based on gross receipts threshold, Form 8941 (Credit for Small Employer Health Insurance Premiums) if claiming this credit, additional schedules in alphabetical order by schedule letter, and additional forms in numerical order by form number.
Include detailed attached statements supporting all entries that require explanation or further detail. Do not enter phrases such as “See Attached” or “Available Upon Request” as substitutes for completing required entry spaces on the form itself.
Step 9: Confirm Accounting Method Compliance and Submit Form 3115 if Changed
Verify that the corporation uses a permissible accounting method for the tax year 2016. Generally, S corporations may use the cash method unless they have average annual gross receipts exceeding five million dollars for the preceding three tax years, in which case the accrual method is required. The accrual method is also necessary for inventory purchases and sales, unless the corporation qualifies as a small business taxpayer with average annual gross receipts of $5 million or less for the immediately preceding three tax years.
If the corporation changed its accounting method for 2016, file Form 3115 (Application for Change in Accounting Method) during the year the change is requested, following the automatic or non-automatic change procedures specified in the instructions and applicable revenue procedures.
Step 10: Execute Signature Block and File by Deadline
The return must be signed and dated by the president, vice president, treasurer, assistant treasurer, chief accounting officer, or any other corporate officer authorized to sign tax returns on behalf of the corporation. If a paid preparer completed the return, the preparer must sign in the designated preparer area and include the Preparer Tax Identification Number or the firm’s Employer Identification Number.
For calendar year 2016, Form 1120-S was due March 15, 2017. Consult the current IRS Where to File page for Form 1120-S to find the correct filing address based on the corporation's principal business location and payment status.
Form-Specific Limitations for 2016
S corporations face the nonresident alien direct ownership prohibition, meaning the S corporation election becomes invalid immediately if any direct shareholder is a nonresident alien. This strict prohibition was not relaxed until the Tax Cuts and Jobs Act, effective January 1, 2018, which permits nonresident aliens as indirect beneficiaries of electing small business trusts. For 2016, no nonresident alien may hold S corporation stock directly or indirectly; any such ownership terminates S status, requiring the corporation to file Form 1120 as a C corporation.
The corporation must furnish Schedule K-1 to each shareholder by the due date of the return, including extensions. Failure to furnish Schedule K-1 on time or failure to include all required information or inclusion of incorrect information triggers a penalty of two hundred sixty dollars per schedule for each failure. Suppose the corporation intentionally disregards the reporting requirement. In that case, the penalty increases to $530 per schedule or 10 percent of the aggregate amount of items required to be reported, whichever is greater, significantly improving the cost of noncompliance.
Notable 2016 Schedule K-1 Changes from Prior Years
Schedule K-1 line 12 reporting for charitable contributions underwent expansion to accommodate different limitation categories applicable to individual taxpayers. The 2016 form separates charitable contributions by limitation type using specific codes: Code A for 50 percent limitation cash contributions, Code B for 30 percent limitation cash contributions, Code C for 50 percent limitation noncash contributions, Code D for 30 percent limitation noncash contributions, Code E for capital gain property contributed to 50 percent organizations subject to 30 percent limitation, Code F for capital gain property subject to 20 percent limitation, and Code G for 100 percent limitation contributions by qualifying corporations. In previous years, charitable contributions were reported with only basic cash and noncash distinctions, without the granular categorization now available.
Schedule K-1 line 15 alternative minimum tax items received clarification regarding completion requirements for all shareholders. Lines 15a through 15f must be completed for all shareholders and include adjustments and tax preference items applicable to each shareholder for alternative minimum tax calculation purposes under section 55. Prior year instructions did not explicitly require completion of AMT items for all shareholders, creating potential confusion about whether these lines applied universally or only to shareholders subject to the alternative minimum tax.
Critical Form Filing Distinction
Do not confuse Form 1120-S, which is the S corporation return filed by the corporation with the IRS, with Schedule K-1, which is prepared by the corporation, filed with the IRS as part of the Form 1120-S package, and furnished to each shareholder for their individual tax reporting. Only the corporation files Form 1120-S. Shareholders do not file Form 1120-S. Each shareholder uses their individual Schedule K-1 to report S corporation income, deductions, and credits on their personal Form 1040, integrating pass-through items with their other income and deductions.
Conclusion
Successfully completing the 2016 Form 1120-S requires systematic verification of S election validity and shareholder eligibility, proper determination of Schedule L, M-1, M-2, and M-3 filing requirements based on receipts and asset thresholds, accurate calculation of ordinary business income and separately stated items, and timely preparation of individual Schedules K-1 for all shareholders. The ten-step checklist provides a comprehensive framework ensuring compliance with all 2016 filing requirements while maintaining the corporation’s S election status and avoiding penalties for late or incorrect shareholder reporting.
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This checklist is for educational purposes only and does not constitute tax or legal advice. Always review official IRS instructions and consult a qualified professional for guidance.
