The four most common rounding rules
| Rule | Interval | Decimal unit | Common use |
|---|---|---|---|
| Nearest 5 minutes | 5 min | 0.083 hr | Retail, hospitality |
| Nearest 6 minutes | 6 min | 0.10 hr | Legal billing, consulting |
| Nearest 10 minutes | 10 min | 0.167 hr | Field services |
| Nearest 15 minutes (quarter hour) | 15 min | 0.25 hr | Most U.S. hourly payroll |
How nearest-15 (quarter hour) works
The quarter-hour rule splits each 15-minute block at the midpoint, 7.5 minutes past the quarter. In practice, payroll uses the simpler "7-minute rule":
- 0-7 minutes past a quarter → round down to that quarter.
- 8-14 minutes past a quarter → round up to the next quarter.
Examples for a clock-in at the 8:00 quarter:
- 8:03 → rounds down to 8:00
- 8:07 → rounds down to 8:00
- 8:08 → rounds up to 8:15
- 8:14 → rounds up to 8:15
What the FLSA requires
The federal Fair Labor Standards Act allows rounding, but only if the practice is neutral over time. That means:
- Rounding goes both up and down, not always toward the employer's benefit.
- Across pay periods, employees should not lose time on average.
- Some state laws (notably California) restrict or prohibit rounding for time worked.
Decimal equivalents
| Quarter hour | Decimal | 6-min unit | Decimal |
|---|---|---|---|
| :00 | 0.00 | 0 min | 0.0 |
| :15 | 0.25 | 6 min | 0.1 |
| :30 | 0.50 | 12 min | 0.2 |
| :45 | 0.75 | 18 min | 0.3 |
| 1:00 | 1.00 | 24 min | 0.4 |
Common rounding mistakes
- Always rounding down on clock-in and up on clock-out, that consistently underpays.
- Mixing rounding rules within the same pay period.
- Rounding before lunch deduction, then again after, double rounding skews totals.
- Not documenting the rule in the employee handbook.
What FLSA actually says about rounding
The federal regulation (29 CFR 785.48) allows employers to round to the nearest 5, 10, or 15 minutes, but only if the practice "averages out so that all the time actually worked by the employee is properly counted." A rounding policy that always benefits the employer is not allowed, even if each individual rounding event looks small.
Why neutrality is hard in practice
Neutral rounding sounds simple, but real schedules rarely produce balanced rounding. Employees who tend to clock in a few minutes early and clock out a few minutes early can lose paid time over months even when each rounding decision looks fair. The fix is to audit rounded versus actual totals quarterly. If rounded totals are consistently lower than actual minutes worked, the policy has drifted.
State rules that override the federal default
- California. Court rulings have narrowed acceptable rounding. Many California employers have moved to exact-time payroll for hours worked.
- Oregon and Washington. Generally permit rounding under FLSA-style rules but watch state wage claims closely.
- New York. Permits rounding but requires that rounding does not consistently deprive employees of pay.
Rounding by increment
Quarter-hour rounding (15 minutes) is the most common because it aligns with the way decimal hours work, but smaller increments are increasingly common. The Quarter Hour Rounding Calculator, Six Minute Rule Calculator, and Time Clock Rounding Calculator show how each method changes a single punch and a full week.
What to document if you round
Employers who round should document the policy, the increment, and the rounding direction in writing. Employees should be able to see how their punches map to their paid time. Without that transparency, even a compliant policy invites wage disputes.
Comparing rounded and exact totals
The simplest internal audit is a quarterly comparison of rounded paid time versus exact paid time across a sample of employees. If rounded totals are within a few minutes per pay period in either direction, the policy is operating neutrally. If rounded totals are systematically lower than exact, the policy needs review. The same audit also catches data entry errors that would otherwise go unnoticed.
Important note
Time clock rounding rules vary by employer, state, and union contract. Some states restrict rounding entirely. Confirm what applies to your workplace before relying on rounded totals.