Why is there a big difference in SMART hours between two months?

If you notice a significant difference in SMART hours between two months — like April and May — the most common explanation is a change in the Productivity forecast.

Quick Explanation

SMART hours are calculated using the following formula:

SMART Hours = Cost Driver ÷ Productivity Forecast

So, if the Productivity forecast is lower in May, even with the same cost driver (like number of covers or revenue), the result will be higher SMART hours. This doesn’t necessarily mean your staffing increased — it reflects a lower productivity expectation for that period.

What To Check

  • Compare the Productivity forecast for both April and May.
  • Look at the Cost Driver (e.g., revenue, covers) to see if it stayed consistent.
  • Confirm that Productivity is set as the selected forecast in your SMART setup.

By aligning the forecast expectations with actual performance, you’ll get clearer insight into staffing efficiency across periods.

Share this article!

You may also like…

Updated PIA chat experience

Updated PIA chat experience

We have released an updated version of PIA Chat designed to make it easier to use alongside your daily work in PMI....

Never miss an update

Never miss an update

To help you stay informed about the latest PMI improvements, PIA will notify you whenever new release notes are...