What a part-time S-corporation owner should record about working hours

If you own an S corporation and work part-time in the business, the narrow question is this: what hours should you record, and in what form, so your time records are useful? The answer matters because an S corporation must pay reasonable compensation to a shareholder-employee for services before non-wage distributions may be made, and the IRS can reclassify payments that don't meet that standard (IRS, S Corporation Compensation and Medical Insurance Issues). A contemporaneous hour log is one of the practical records that helps you document what services you actually performed.

Decide what counts as a work hour

Before logging anything, define the boundary. Record hours spent performing services for the corporation: client work, admin tasks, bookkeeping, sales calls, and supervision of staff. Do not log time that is purely ownership activity with no services rendered, such as reviewing your own investment in the company or passive reading of statements. The distinction matters because the reasonable compensation question turns on services rendered to the corporation, not on ownership status.

If your role is genuinely part-time, log only the hours you actually work. Do not round up to a full-time equivalent or pad the log to match a salary figure you have in mind. The log should reflect reality so it can support whatever compensation decision you make.

Choose a logging method you will actually maintain

The IRS allows any recordkeeping system suited to your business that clearly shows income and expenses, and electronic systems are acceptable as long as they meet the same basic principles (IRS, What Kind of Records Should I Keep). Apply the same logic to your time log.

Practical options:

• A simple spreadsheet with date, task, hours, and a short description.
• Time-tracking software that timestamps entries automatically.
• A calendar-based log where you block worked hours and label them by task.

Pick whichever you can sustain weekly. A log reconstructed months later from memory is far weaker than one kept as you go.

Capture the details that make the log useful

For each entry, record four things: the date, the number of hours, the task performed, and a brief note on the output (for example, prepared two client invoices, ran payroll, met with a vendor). This level of detail lets you or your bookkeeper summarize hours by category at year-end.

Keep the log with your other business records. The IRS guidance on recordkeeping emphasizes keeping supporting documents organized by year and type because they support the entries in your books and on your return (IRS, What Kind of Records Should I Keep). Your hour log functions the same way: it supports the compensation entries in your payroll records.

Reconcile hours to payroll and distributions

At each payroll run, compare hours logged against wages paid. If you paid yourself wages for the period, the log should show hours consistent with that pay. If you took a distribution in a period where you also performed services, the log helps you document that reasonable compensation was paid for those services before or alongside the distribution. Note that part-time workers are treated the same as full-time employees for federal income tax withholding and social security, Medicare, and FUTA tax purposes (IRS, Publication 15), so your part-time hours flow through payroll the same way anyone else's would.

A practical workflow: at month-end, total your logged hours, confirm payroll for the period was run, and note in your books any distribution made. This keeps the three records — hours, wages, distributions — aligned.

Review the log when your role changes

If your hours increase, decrease, or your duties shift, update the log and revisit your compensation decision. A part-time owner who ramps up to near-full-time hours has a different services profile than one working ten hours a month. The log is what shows that change. For related year-end payroll housekeeping, see What an S-Corp Owner Should Finish on Payroll Before December 31.

If you want help setting up a time log that ties cleanly into your books and payroll, contact KDM Accounting Services Inc. through our contact page.

Further reading

For related context, read How much should you pay yourself from your S-Corp?.

For related context, read How to Tell If the Business Can Still Afford the Owner.