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Accounting Lions

Business Tax Returns

Your business return, filed by someone who gets it.

Business tax preparation for sole proprietors, single-member LLCs, S-corps, partnerships, and C-corps — federal and state, filed remotely. We take the time to understand your business before we file, whether we handle your books or not.

How working together actually works

Five steps, start to finish.

You upload, we work, you review, we file. The whole thing happens from wherever you already are — the kitchen table, your phone in the carpool line, your laptop after the kids are in bed. No driving over with a folder. No fax machine. No paper to lose.

Hands writing on paper next to an open laptop during a tax return review.
  1. You sign and send us what we need.

    We'll send you an engagement letter to sign and a short tax organizer to fill out. You'll upload your documents through our secure client portal — no printing, no scanning, no drop-offs.

  2. We prepare your return.

    Once we have everything, we get to work. We'll reach out if something's missing or if we have a question.

  3. We send it back for your review.

    You'll get a copy of the completed return to look over before anything is filed. No surprises.

  4. You sign and pay.

    When you're ready, you'll sign your e-file authorization (Form 8879) and pay the invoice. Both happen online.

  5. We file it.

    That's it. We submit everything to the IRS and any applicable state, and we'll confirm once it's accepted.

Entity types we file

However your business is set up.

Schedule C on your 1040

Due April 15

Sole proprietor & single-member LLC

If you operate as a sole proprietor or your LLC is taxed as one, your business income flows onto your personal return via Schedule C. We handle the personal + business filing as one piece of work.

Form 1120-S

Due March 15

S-corporation

S-corps file their own information return on 1120-S and pass income through to shareholders via K-1. We file the corporate return and prep the K-1s.

Form 1065

Due March 15

Partnership & multi-member LLC

Partnerships and multi-member LLCs taxed as partnerships file 1065 and issue K-1s to each partner. We handle the partnership return + the partner K-1s in one engagement.

Form 1120

Due April 15

C-corporation

C-corps pay tax at the entity level. Less common for owner-operator businesses, but we file these when the structure fits — including evaluating S-corp election timing for clients considering the switch.

What’s included

What the engagement covers.

  • Federal return preparation (1040 Schedule C, 1120-S, 1065, or 1120)
  • Minnesota state return preparation
  • E-file of both federal and state, with confirmation once it's accepted
  • K-1 prep and distribution for pass-through entities
  • Same person every year, with last year's file open while we file this year

The dates that matter

Business returns aren’t due April 15.

S-corps and partnerships file a month earlier than personal returns. Most owners don’t realize until the IRS sends a late-filing notice. Here’s the actual cadence.

  1. March 15

    S-corps (1120-S) and partnerships (1065)

    Or file a 6-month extension by the same date.

  2. April 15

    Sole props / single-member LLCs + C-corps (1120)

    Same day as personal returns. Extension pushes to October 15.

  3. September 15

    Extended S-corp + partnership returns

    If you extended in March, this is the real deadline.

  4. October 15

    Extended sole-prop + C-corp returns

    If you extended in April, this is the real deadline.

If the 15th lands on a weekend or holiday, the deadline moves to the next business day.

Common tax documents

What most returns involve.

You don’t need to have all of this assembled to reach out — we’ll talk through what applies to your business. But for context, here are the most common documents.

Books & income

  • Year-end P&L + balance sheet (or QuickBooks login if we keep your books)
  • Bank + credit card statements (through December 31)
  • Last year's business return (federal + state)

1099s & K-1s

  • 1099s issued + 1099s received
  • K-1s (if you hold partnership / S-corp interests)

Payroll & assets

  • Payroll summary or W-3 (if you ran payroll)
  • Asset purchases over $2,500 (vehicles, equipment — with date + cost)
  • Mileage log (if you drive for business)

Loans & owner activity

  • Loan statements (year-end balance + interest paid)
  • Owner distributions + contributions (totals for the year)

How documents are shared

All documents go through our secure client portal — never email attachments. You’ll e-sign your return through the same portal once it’s ready to file.

Industries we know

Business returns are shaped by the business behind them.

A restaurant’s books look nothing like a contractor’s, and the return reflects that. Here’s how we work with the industries we see most.

Common questions

What clients ask about business returns.

Tax season starts before the deadline.

The best business returns are filed by people who’ve been watching the books all year. If you want that for next year, the time to start is now.