Which Business Entities Require Separate Tax Returns—and What’s Different?

Daniel Hartsock

LLCs, S‑corps, and partnerships each have different tax filing requirements depending on how the business is structured. Single‑member LLCs are usually reported on the owner’s personal tax return, while multi‑member LLCs, S‑corps, and partnerships file their own separate business returns. At Firstax, we help Dallas–Fort Worth business owners understand these differences so they can stay compliant, avoid surprises, and keep tax season stress‑free.

Which Business Entities Require Separate Business Tax Returns?

Business taxes aren’t one‑size‑fits‑all. The type of return you need depends on your legal structure and tax election. Here’s a simple breakdown for business owners across DFW.

Single‑Member LLC

  • Default filing: Included on your personal return (Schedule C).
  • No separate business return required —unless you elect S‑corp status.
  • Good for freelancers, contractors, and small operations without multiple owners.

Multi‑Member LLC

  • Requires a separate partnership return: Form 1065.
  • Each owner receives a Schedule K‑1 showing their share of profit or loss.
  • Even if the business had little or no income, the return must still be filed.

Partnership

  • Must file Form 1065 for the business as a whole.
  • Partners report their shares on their personal returns via Schedule K‑1.
  • Common for real estate investments and co‑owned businesses.

S‑Corporation

  • Requires its own tax return: Form 1120‑S.
  • Shareholders each receive a Schedule K‑1.
  • Often used for growing businesses seeking potential payroll tax savings.

C‑Corporation

  • Requires a separate corporate return: Form 1120.
  • Taxes are paid at the corporate level—not passed through to the owners.
  • Less common for small businesses but ideal for certain growth structures.

What’s Actually Different Between These Filings?

Here’s the plain‑English version:

  • Who files the return? Some returns are filed by the business itself (S‑corps, partnerships, C‑corps), while others run through the owner’s personal return (sole proprietors and most single‑member LLCs).
  • How income is taxed: LLCs, partnerships, and S‑corps “pass through” income, while C‑corps pay their own tax.
  • Which forms you receive: Multi‑owner entities issue K‑1s; corporations issue W‑2s to shareholders who are employees.
  • Deadlines differ: S‑corps and partnerships generally file by mid‑March; C‑corps file by mid‑April (unless on a fiscal year).

At Firstax, we help business owners across Dallas–Fort Worth—especially in Willow Park, Aledo, Prosper, and Frisco—understand what applies to their structure and plan ahead so deadlines aren’t a scramble.

What to Bring to Your Business Tax Appointment

Having documents ready makes the process smoother and helps us file accurately.

  • Employer Identification Number (EIN)
  • Articles of Incorporation/Organization (if new)
  • Income records: sales reports, 1099‑NEC issued and received
  • Expense records categorized by type
  • Payroll reports (if applicable)
  • Bank and credit card statements
  • Balance sheet and profit & loss (P&L) statements
  • Loan statements or equipment purchases
  • Last year’s business tax return

Common Missteps That Cause Delays

  • Missing or late bookkeeping —books that aren’t updated delay filing.
  • No distinction between business and personal expenses.
  • Incorrect or outdated ownership information —especially for partnerships.
  • Missing payroll filings when electing S‑corp status.
  • Forgetting to issue 1099s to contractors before the deadline.

Learn more about our business support services:

Need Business Tax Guidance?

Whether you’re an LLC, S‑corp, partnership, or corporation, Firstax can help you understand your filing requirements and stay compliant year‑round. Schedule a business consultation today to get clarity and a plan for the season ahead.