Nationwide Federal & State Corporate Tax Preparation, Audit Representation, Tax Planning

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Corporate Tax Returns - C Corps

c corp tax return preparation

Preparing corporate tax filings can be tricky. Correctly identifying which business expenses are allowed according to current IRS tax guidelines is not always clear to the average business owner. Different types of deductions come with limits and exclusions and tax code regulations change constantly. A tax professional who specializes in corporate tax preparation is best suited to determine which deductions are appropriate for your business.

At William McConnaughy, CPA, we believe in helping taxpayers keep more money in their pockets. We truly care about every client so we work hard to minimize your liabilities when we prepare your corporate tax return. We’re continually searching the tax code to find new ways for our clients to hold onto their hard-earned money. When you work with us, you can be confident that we’re looking out for your best financial interests because we’re highly trained tax professionals.

Corporate Tax Preparation

Contact William McConnaughy, CPA for trusted corporate tax return services at economical rates. Call us now at 888-225-1272 or request a consultation online.


Below are answers to some of the common question about corporate income taxes and the information we need to prepare your tax filings.

What form is used to file taxes for a C corporation?

IRS Form 1120 is the form required by the IRS.

When are my corporate taxes due?

For C corps, Form 1120 must be filed by the 15th day of the 3rd month after the end of your company’s tax year. If the due date falls on a weekend or major holiday, the filing is due on the next business day.

What information do I need to file Form 1120?

We'll need the following information:

  • Articles of incorporation
  • Employer Identification Number (EIN)
  • Balance sheet
  • Income statement
  • List of corporate officers
  • Prior year tax returns (if applicable)
  • State corporation number