What it is
The formula is service and parts gross profit divided by total fixed overhead, expressed as a percentage. A rate of 100% means service and parts alone pay the fixed costs of running the store, so profit from selling boats is not needed to cover overhead.
How it works at a boat dealership
Boat sales swing with the season and the economy, while service demand is steadier. A high absorption rate makes the dealership more stable. Dealers can raise it by increasing gross profit from service and parts, by controlling overhead, or both.
Measuring it needs consistent accounting: which expenses are fixed, and how gross profit is allocated between departments.
What dealers watch
Dealers watch the rate over time and by location. Service capacity is a constraint: the MRAA has reported a shortage of technicians across the industry, which limits how much service a store can sell.
Why it matters
Boat retail is seasonal and sensitive to the economy, and service and parts are the steadier side of the business. A dealership with a high absorption rate has a base of income that continues when sales slow down, and buyers of dealerships pay attention to it. It also shows where investment helps most: another technician can raise the rate more than another salesperson.
Common mistakes
Calculating it with inconsistent definitions of overhead, comparing to another store without matching methods and chasing volume without the technicians to deliver it.