Temporal Rate
A temporal rate is an hourly rate that changes over time with preserved history. Temporal rates allow accurate retrospective reporting by applying the rate that was active when work was performed, not the current rate.
Key Characteristics
- Time-aware: Rates are associated with effective dates.
- History preserved: Past rates remain accessible for reporting.
- Automatic application: The correct rate applies based on work date.
Why Temporal Rates Matter
Rate Changes Happen
Employees receive raises. Client rates are renegotiated. Market conditions shift.
Historical Accuracy
Without temporal rates, changing a rate would retroactively alter past reports.
Audit Compliance
Accurate historical records support financial audits and compliance.
Temporal Rate Structure
Effective Date
When the rate becomes active.
End Date
When the rate stops applying (optional, often open-ended).
Rate Value
The hourly rate amount during this period.
Impact on Workforce Planning
For businesses using time tracking software like Sandtime.io:
- Accurate historical reports: Past reports remain stable after rate changes.
- Raise management: Update rates without rewriting history.
- Client rate changes: Handle renegotiations cleanly.
- Audit readiness: Demonstrate rate history for compliance.
Best Practices
- Set effective dates when rates change, not retroactive dates.
- Document reasons for rate changes.
- Review rate history periodically for accuracy.
- Plan rate changes in advance when possible.
- Use consistent effective dates (start of month, start of quarter).
Temporal Rate Example
| Effective Date | Cost Rate | Revenue Rate |
|---|---|---|
| Jan 1, 2024 | $50/hr | $100/hr |
| Jul 1, 2024 | $55/hr | $110/hr |
| Jan 1, 2025 | $60/hr | $120/hr |
Work logged in March 2024 uses the January rates. Work logged in August 2024 uses the July rates.
Common Challenges
Backdated Changes
Changing rates retroactively defeats the purpose. Avoid backdating.
Missing History
Rates added without effective dates. Always specify when rates apply.
Complexity
Too many rate changes. Consolidate where practical.
Related Terms
Temporal rates are hourly rates with time awareness. They affect cost and revenue calculations in custom reports. Rates are tied to assignments between team members and projects.