As an S-corporation you’ll have different tax forms to file than other business structures, such as Form 1120-S. It is essential you file the correct forms to the IRS. These forms will determine how the business and shareholders are taxed and how much tax they owe.

Form 1120-S

S-corporations are pass-through entities. One of the advantages of choosing an S-corporation is that business income is not taxed at the entity level. Instead,  the individual shareholders pay business income taxes for an S-corp on their individual tax returns.

This means once the entity files  Form 2553 (S-Corporation election) and the IRS accepts it, the company itself pays no taxes.

Form 1120-S (S-Corporation Tax Return) is prepared along with the K1 forms for the shareholders once the books are closed for the year. The K1 form reflects the pass-through items of income, deductions, credits and other relevant information that the respective shareholders are required to report on their individual returns.

Differences Between Form 1120 and 1120-S

What’s the difference between the two forms?

Quite simply, Form 1120 is the tax return form for C-corporations, showing business gains, losses, deductions, and credits.

C-corps pay federal income tax at the entity level, which leads to  double taxation (sometimes seen as the biggest disadvantage of operating as a C-corp). In addition to the business paying income tax, shareholders pay personal income tax on dividends. 

1120-S is essentially the same, but for S-corporations the business income gets taxed on the shareholder’s individual returns and the distributions are not taxed to the shareholders as long as the amount does not exceed their basis in the S-Corporation’s stock.

Properly Filling Out the Form

Normally, tax returns like the 1120-S can be filled out and filed electronically, including necessary attachments, statements, schedules, and other forms. 

The filing deadline is typically the 15th day of the third month after the end of the business’s tax year. For corporations operating on the regular calendar year, the deadline for filing is March 15th. 

It’s important to note that these forms can be incredibly complicated depending on the factors surrounding your business. In many cases, it will be helpful, or even necessary, to seek advice from an experienced CPA, like the startup experts at Founder’s CPA.

To correctly fill out the forms, you’ll need basic info about the business, as well as financial statements and previous year’s returns. 

For example:

  • A list of products and services
  • Your business activity code (the six-digit code best describing the business’s primary income-generating activity)
  • Date of incorporation
  • Employer Identification Number (EIN)
  • Financial statements, including your Profit and Loss (P&L) statement and Balance Sheet
  • Accounting method (accrual or cash-based)
  • Records of payment to any independent contractors

Before filing, forms must also be signed and dated by the corporation’s president (or any other corporate officer with signature authorization for tax forms).

Potential S-Corp Tax Changes

The tax code is constantly evolving. New legislation can affect how you file your taxes and how much you owe (or are owed).

To ensure you’re paying the right amount and haven’t missed any deductions or credits, you’re best off involving your CPA or a tax expert. For example, after 2018, qualifying S-corp shareholders are eligible to deduct up to 20% of their net business income from their income taxes. 

Common Problems and Questions

On average, fewer than 0.25% of returns filed by S-corporations are audited each year. 

While this saves businesses immense effort on audit preparation, the pendulum could easily swing back the other way. The IRS could bring a stronger focus and greater oversight to S-Corps and how they pay their executives. This highlights the importance of making sure shareholders working in the company are paid a reasonable salary.

What is ordinary business income?

Ordinary business income refers to the net loss or net income for the company. Business expenses are deducted from the total sales, resulting in ordinary business income.

What types of distributions count as income?

Typically, S-corp distributions are exempt from taxation and do not count as income. Your schedule K-1 (filed with Form 1120-s) shows this information.

What can an S-corp do with extra funds?

Excess funds left in the S-corp’s accounts become assets of the company. There are usually no tax implications of holding funds in the company because S-corps are not taxed at the corporate level. 

Handling Your S-Corps 1120-s Forms

Filing corporate taxes can be a difficult and complex process. Depending on the complexity of your organization and its business model, tax preparation can be time-consuming, and attempting to DIY can lead to costly errors. 

If you have questions about how your S-corp should handle filing its tax returns, the experts at Founder’s CPA can help. Set up a free consultation with our startup accounting experts to ensure your 1120-S forms are filed on time and correctly.

Curt Mastio
Post by Curt Mastio
May 29, 2024 10:37:29 AM
Curt Mastio started Founder’s CPA in 2017 and currently serves as the Managing Partner of the firm. After obtaining both his Bachelor’s and Master’s degrees in accounting from the University of Illinois in Urbana-Champaign Curt started his career in Big Four public accounting. Shortly thereafter Curt served as the Chief Financial Officer of Storage Squad began his stint as an Adjunct Instructor at Northwestern University’s Farley Center for Entrepreneurship and has been teaching Accounting & Finance to undergraduate students for 6+ years. In his current role Curt oversees strategy, operations, and business development at Founder’s CPA. Further, Curt has experience working directly with 200+ startups and small businesses providing accounting, tax, and outsourced CFO services. His industry expertise lies in the SaaS, Blockchain, Marketplace, and Fintech industries. He has served as a key advisor working directly with startups that range from pre-revenue to companies generating over $30 million dollars a year in revenue. Lastly, he serves a key role working directly with the firm’s clients that have collectively raised over $200 million in venture capital funding to date. Curt is also an active advisor, mentor, and investor in the startup ecosystem. He has facilitated numerous workshops, webinars, and presentations to incubators and other startup-centric organizations. He is also an active mentor for Techstars in both Chicago and Iowa. Outside of his daily professional duties Curt is actively involved with Beat the Streets Chicago and was a founding member of its Young Professionals Board. His efforts in both leadership and community involvement were recognized when he was awarded the Illinois CPA Society’s Outstanding Young Professional Leadership Award in 2020. He was also a panelist at their annual conference in 2022 where he spoke about his experiences starting and operating a public accounting firm. He maintains an active Certified Public Accountant designation that he obtained in 2014. Outside of work, Curt can be found spending time with his friends & family including his dog Rufus. His hobbies include golf, boating, cooking, reading, and attending sporting events & concerts.