Your Form 1120-C Corporation Return Checklist for 2025 is Here!
Complete Your 2025 1120-C Corporation Filing with Ticking all These Boxes.
Your 2025 Form 1120-C Checklist Is Ready!
This checklist is made to ensure you don’t miss any crucial steps before filing your 1120-C Corporation return. By ticking each box, you’ll have all the necessary documents and records organized and ready for submission. Ensure you meet deadlines without last-minute stress.
The Deadline to File Your 1120-C - Corporation
Tax Extension is APRIL 15, 2025
Basic Information
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Verify Your Business Filing Type
Know your business return type as registered with the IRS (Forms 1065, 1120, or 1120S). Not sure? Call the IRS Business Help Line at 1-800-829-4933. -
Employer Identification Number (EIN)
Ensure you have your EIN. If not, apply online at IRS.gov. -
State Reporting Details
List all states where your business has a tax obligation (nexus) and include state ID numbers. -
Organizational Documents
Keep a copy of your articles of incorporation, bylaws, or any amendments. -
Prior Year Tax Returns
Review last year’s federal, state, and local tax filings for reference. -
Estimated Tax Payments
Record dates and amounts for all estimated tax payments made (federal, state, and local). -
S Corporation Election Documents
If applicable, include Form 2553 IRS acceptance letter. -
Check-the-Box Election
If Form 8832 was filed, include the acceptance letter for corporate taxation. -
Contact Details
Keep updated contact information for any inquiries about your filing.
Business and Financial Records
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Trial Balance Report
Prepare a trial balance or year-end summary from your accounting software. -
Bank and Credit Card Records
Provide statements supporting business expenses and interest. -
Payroll Reports
Compile payroll records, including issued W-2 and 1099 forms. -
Tax Payment Reports
Include all the federal unemployment, Social Security, and Medicare tax paid (Forms 940 and 941). -
State and Local Payroll Taxes
Detail state and local payroll taxes paid throughout the year. -
Multi-State Operations
Track revenue, payroll, and property details by state, if applicable. -
Inventory Records
Provide year-end inventory reports, including costs and quantities.
Documents Received
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Tax Forms
Collect all relevant forms received, including: 1099-B, 1099-DIV, 1099-INT, 1099-K, or 1199-MISK -
Schedule K-1
Include K-1 forms for entities your business owns. -
Credit Certificates
Gather all tax credit certificates from federal or state authorities.
Asset Records
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Depreciation Schedules
Maintain schedules for existing assets, detailing cost, date in service, and depreciation. -
New Assets
Record details for new purchases, including cost, purchase date, and usage percentage. -
Asset DisAsset Sales or Disposals
Report sales proceeds, original costs, and trade-in allowances for disposed assets. -
Vehicle Records
Maintain a mileage log for all vehicles, including business and total use. Include actual expenses like gas and maintenance costs.
Download Your 1120-C Corporation Form Checklist 2025 Now
Make sure you’re ready for tax season—get your 1120-C Corporation Form Checklist for 2025 today!
