Walk the loop

Company taxes: what to check before the call

The company's taxes.

Why it matters: Tax is the word most owners search for, and the station most files skip. It lives next to the close, not in April.

Answer it and see your picture.

What lives here

  • The company's own returns
  • Quarterly estimates set from real numbers
  • The entity choice and when a change would take effect
  • Sales and payroll tax deadlines
  • Any letter from the IRS or the state

What good looks like

  • Every return filed before its date and tied to the books.
  • The next estimate's amount known before the quarter ends.
  • The entity checked against how you pay yourself once a year.

Do this yourself

  1. Find the company's last filed return.
  2. Write down the next estimate date and the amount you expect to pay.
  3. If you do not know the amount, that is the answer to bring.

See it on a company like yours

Here are three years of returns for Cinder Mesa Landscape, the fictional company in our worked examples.

Three years of returns

Illustrative composite. Not a real client.

Item202320242025
ReturnSchedule CSchedule CSchedule C
Receipts reported$1,080,000$960,000$800,000
Gross margin on the return51.0%40.0%52.0%
Schedule C profit$378,800-$16,119-$211,800
Self-employment tax$30,010$0$0
Federal tax on the household return$125,733$0$0
Paid in during the year$110,644$19,018$0
Balance due or refund$15,089 due$19,018 refund$0
Late-payment penalty$0$453$0
Arizona tax$8,749$0$0
Arizona balance or refund$0$4,374 refund$0
Retirement plan contribution$0$0$0

The retirement line is $0 in every year. On the 2023 profit, a SEP would have held $66,000. A solo 401(k) would have held the same $66,000. Before the annual addition limit, 20% of the profit after half the self-employment tax is $72,759. The deferral is $22,500, and it does not raise the cap on this profit. 2024 and 2025 have no profit to put in. On a profit year, the contribution is set from that year's profit before December 31. This example does not promise a dollar result.

Swipe to see the rest of the table.

Read more on the Company taxes page

Steven sees your answers before the call. Nothing here is graded.

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