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What is Market Penetration Index (MPI)?

Updated 2026-05-28

Market Penetration Index (MPI), also known as Occupancy Index, is a metric used in hospitality revenue management to compare a property's performance to its competitors. It is calculated by dividing your property's occupancy rate by the average occupancy rate of your competitive set and multiplying by 100.

A score of 100 indicates you have achieved your fair share of the market, while a score above 100 suggests you are outperforming your competitors in terms of occupancy.

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How it works

To calculate MPI, a property manager first identifies a 'competitive set' (or comp set) of nearby properties that are similar in size, quality, and target guest. The manager then gathers the average occupancy rate for this comp set over a specific period (e.g., a week, month, or year).

This market average is then compared against their own property's occupancy rate for the same period. The formula is: (Your Property's Occupancy Rate / Competitor Set's Average Occupancy Rate) x 100 = MPI.

Why it matters

MPI provides crucial context that a simple occupancy rate figure lacks. It tells a host not just how full their property was, but how full it was compared to the direct competition.

A low MPI might indicate that prices are too high or a listing is underperforming, prompting a review of pricing strategy or marketing efforts. Conversely, a very high MPI could suggest that rates are too low and that there's an opportunity to increase prices without significantly losing occupancy.

Examples

  • A cabin owner reviews their monthly report and sees their MPI for July was 85. This means their occupancy was 15% lower than their local competitors, prompting them to investigate their pricing and marketing for that month.
  • A city apartment manager achieves an MPI of 120 during a major music festival. This indicates they successfully captured a larger share of the market's occupied nights, likely due to a well-timed pricing and promotion strategy.
  • The manager of a portfolio of beach condos notices that one specific unit consistently has an MPI below 90, while the others are near 100. This data isolates the problem to that single property, suggesting an issue with its listing, amenities, or pricing.
  • A host with 75% occupancy celebrates until they see their comp set averaged 85% occupancy, resulting in an MPI of 88.2. This realization shifts their focus from celebrating high occupancy to analyzing why they underperformed in the market.

Frequently asked questions

What is a good Market Penetration Index (MPI) score?+
An MPI of 100 signifies that you are capturing your fair share of market occupancy. A score above 100 is generally considered good as it means you are outperforming your competitors. However, MPI should be analyzed alongside the Average Rate Index (ARI) to ensure a high occupancy isn't being achieved with excessively low rates.
How is MPI different from occupancy rate?+
Occupancy rate is an internal metric that shows the percentage of your available nights that were booked. MPI is a comparative, external metric that puts your occupancy rate into context by benchmarking it against the average performance of your direct competitors.
Where can I find data on my competitors' occupancy rates?+
Accurate competitor data can be sourced from specialized short-term rental market data tools like AirDNA, KeyData, or through integrations with dynamic pricing software such as PriceLabs and Beyond. Some property managers also perform manual research by tracking competitor availability calendars, though this is more time-consuming and less precise.
Should I always aim for the highest possible MPI?+
Not necessarily. An extremely high MPI, especially when paired with a low Average Rate Index (ARI), can be a strong indicator that your nightly rates are too low. The goal of effective revenue management is to find the optimal balance between MPI and ARI to maximize overall revenue (RevPAR), not just to maximize occupancy.
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