Time Rounding
Time rounding is the practice of adjusting clock-in and clock-out times to the nearest increment (typically 5, 6, or 15 minutes) before calculating pay. Permitted under US FLSA rules if it averages out over time and doesn't systematically underpay workers. Not used in most UK payroll calculations.
How time rounding works
Instead of recording exact clock-in and clock-out times, time rounding adjusts entries to the nearest increment:
Quarter-hour rounding (most common in US):
- Clock-in at 8:07 → rounds to 8:00 (7 minutes early, rounds down)
- Clock-in at 8:08 → rounds to 8:15 (8 minutes over, rounds up)
- Clock-out at 5:04 → rounds to 5:00 (rounds down)
- Clock-out at 5:23 → rounds to 5:30 (rounds up)
Tenth-of-an-hour rounding:
- Each 6-minute interval = 0.1 hours
- 8:04 clock-in → 8:00 (0.0 rounded down)
- 8:05 clock-in → 8:06 (0.1 rounded up)
5-minute rounding: Less common. 1–2 minutes rounds down; 3–5 minutes rounds up.
Legal status in the US (FLSA)
The US Department of Labor permits time rounding under the FLSA provided:
- The rounding is neutral — it must average out over time so that employees are neither systematically over-compensated nor under-compensated
- It doesn’t favour the employer — if your rounding consistently results in workers being paid less than actual time worked, it’s unlawful
- It’s applied consistently — you can’t round some employees’ time and not others’
Quarter-hour rounding is the most litigated rounding method. Courts have found that quarter-hour rounding can still be unlawful if the employer’s practices (such as requiring workers to be on-site before their shift but not allowing early clock-in) create systematic underpayment even with neutral rounding rules.
California warning: California courts have become increasingly hostile to time rounding. Several court decisions have effectively banned rounding in California, finding that minute-by-minute tracking is required. If you have California employees, consult employment counsel before implementing rounding.
UK position
UK payroll typically uses actual time worked, calculated to the nearest minute. There is no established “rounding” practice in UK employment law. UK payroll software generally records exact minutes and calculates pay accordingly.
For UK employers using US-based time tracking software, verify that the tool’s default rounding settings are turned off or set to “no rounding” to avoid systematic pay calculation errors.
How time tracking tools handle rounding
| Tool | Default rounding | Configurable? |
|---|---|---|
| Hubstaff | No rounding (records to the second) | Yes — can set quarter-hour rounding for payroll export |
| Clockify | No rounding | Yes — rounding available in settings |
| Toggl Track | No rounding | No — records exact time |
| QuickBooks Time | Configurable | Yes — integrates with QuickBooks Payroll rounding settings |
| Harvest | No rounding | No — records exact time |
The important setting is what happens when hours export to payroll. Hubstaff and QuickBooks Time have payroll-specific rounding configuration. Toggl Track and Harvest don’t round — if your payroll system expects rounded inputs, you handle the rounding in payroll, not in time tracking.
The validation risk
When connecting time tracking to payroll, rounding is the most common source of systematic error. If your time tracking tool records exact minutes but your payroll system rounds to quarter-hours, the rounding happens in payroll. If your time tracking tool also rounds before export, you may be double-rounding — compounding the error.
Best practice: Turn rounding off in your time tracking tool. Let your payroll system handle rounding according to its legal configuration for your state or country. This gives you one rounding point to audit rather than two.