The S-Corp election is a tax choice, and most owners make it for one number: the payroll tax saved on distributions. What the election also does is turn your LLC into a company with an employee (you), a payroll, a balance sheet the IRS actually reads, a basis schedule per shareholder, and a separate return due a month before your personal one. The bookkeeping requirements of an S-Corp are not optional extras; they are the evidence that the tax saving is real.
This guide lists what an S-Corp's books have to contain, the accounts a single-member LLC never needed, the monthly and annual routine, the records the IRS looks for in an S-Corp audit, and the mistakes that cost owners the election or the saving.
Before the election, a single-member LLC's books can be a categorized bank feed: income, expenses, draws. The profit lands on Schedule C and nobody looks at the balance sheet. After the election the company files Form 1120-S with a balance sheet (Schedule L) once it crosses the size thresholds, reports each shareholder's share of every item on a K-1, runs payroll for its owner, and tracks distributions against basis. The bank feed is still the raw material; what changes is that the entries now have to produce a return that reconciles.
| Account | What goes in it | Why it exists |
|---|---|---|
| Officer compensation | Gross wages paid to shareholder-employees | Reported separately on the 1120-S; it is the "reasonable compensation" number |
| Payroll tax expense | Employer share of Social Security, Medicare, unemployment | Deductible; separate from the wages |
| Payroll liabilities | Withholding and employer taxes owed but not yet remitted | Balance sheet; must clear to zero after each deposit |
| Shareholder distributions (one per shareholder) | Cash and property distributed to owners | Equity; reported on the K-1; must be proportional |
| Shareholder contributions (one per shareholder) | Capital put in by owners | Increases basis |
| Shareholder loans (to and from) | Money lent by or to a shareholder, with a note | A loan to the company from you increases debt basis; a loan from the company to you is not a distribution only if it is a real loan |
| Accountable plan reimbursements | Business expenses you paid personally and the company reimbursed | Deductible to the company, tax-free to you, only with an accountable plan |
| Retained earnings / accumulated adjustments account | Undistributed profit since the election | Tracks what has been taxed but not distributed |
A shareholder who works in the S-Corp must be paid reasonable compensation through payroll, with federal and state withholding, employer taxes, quarterly Form 941 filings, annual W-2s and unemployment filings. That means a payroll provider or a payroll module, a payroll schedule, and payroll tax deposits on time. "I'll just take distributions and true it up in December" is the sentence that precedes most S-Corp audits; our guide to S-Corp salary vs distribution covers how to set the number. For the books, the requirement is that the payroll entries (gross wages, withholding, employer taxes, net pay) flow into the accounts above every pay period, not as one lump in December.
Distributions are tax-free up to your stock basis and a capital gain above it, so the company has to know your basis at all times. Basis starts with what you contributed, rises with your share of income and further contributions, and falls with losses and distributions. A per-shareholder basis schedule, updated at every close, is a bookkeeping deliverable; shareholders are now required to attach a basis computation (Form 7203) in several situations, including when they receive a distribution or claim a loss. If the books do not produce the schedule, someone reconstructs it from years of K-1s in April.
A disregarded LLC's balance sheet is a courtesy. An S-Corp's is part of the return once total receipts or total assets cross $250,000, and it is reviewed for the things that signal problems: a shareholder loan account that only ever grows (distributions in disguise), negative equity with continuing distributions (distributions above basis), payroll liabilities that never clear, and a "due to shareholder" balance that nobody can explain. The balance sheet on the return has to tie to the books, and the books have to tie to the bank, every year, which is only easy if it was done every month.
Every pay period: record payroll in full; remit deposits. Every month: reconcile every bank and card account; categorize every transaction; post distributions to the right shareholder; clear personal expenses through the accountable plan or reclassify them as distributions; update the basis schedule; confirm payroll liabilities match the next deposit. Every quarter: file 941 and state payroll returns; check reasonable compensation against year-to-date profit; review estimated taxes on the personal side. Every year: W-2s and W-3 by January 31; 1120-S and K-1s by March 15 (or extend); Form 7203 for shareholders who need it; a dated reasonable compensation memo in the file.
Every one of these is visible in monthly closed books and invisible in a year-end bank feed. HaraPro keeps the S-Corp's books with the accounts above built in, next to your other entities and your personal accounts, so payroll, distributions and basis are tracked as they happen; the S-Corp bookkeeping page shows the setup, and one business is free forever.
Payroll for shareholder-employees with all filings, separate accounts for officer compensation, distributions and contributions per shareholder, a basis schedule, an accountable plan for reimbursements, monthly reconciliations, and a balance sheet that ties to the return.
Schedule L is required once total receipts or total assets reach $250,000, and it is good practice regardless, because the shareholder loan, distribution and equity accounts on it are what the IRS reviews.
You can technically run an annual payroll, but withholding and deposits still have to be handled correctly and the salary must be reasonable for the whole year's work. Regular payroll is simpler and far more defensible.
A running record per shareholder of contributions, share of income and loss, and distributions, giving the basis against which distributions are tax-free. Form 7203 requires it in several situations.
Usually not. Rental income is not subject to self-employment tax, so the S-Corp offers no payroll tax saving, and it complicates depreciation, basis and the eventual transfer of the property. Rentals are generally held in a separate LLC.