Free inventory turn rate calculator — measure dealership inventory turnover, days supply, and carrying costs by vehicle category.
Industry benchmark: 8-12 turns per year for used vehicles. If you're below 8, you're losing money to carrying costs.
Your turn rate tells the real story of your inventory performance. Fast turns compound into major annual profit gains.
Inventory turn rate is the heartbeat of a dealership. Master this metric and everything else — cash flow, floor plan costs, lot freshness — falls into place.
Key Features & Benefits
- Turn Rate Calculation — Measure how many times your inventory turns over per year — the key metric for dealership inventory health.
- Days Supply — Calculate average days-on-lot by vehicle category — new, used, certified, and by price range.
- Carrying Cost Impact — See how turn rate affects floor plan interest, insurance, and total inventory carrying costs.
- Category Analysis — Break down turn rates by vehicle type, age, price range, and acquisition source to optimize stocking.
Frequently Asked Questions
What is a good inventory turn rate for a car dealer?
For used vehicles, 8-12 turns per year (30-45 days average) is considered good. Elite dealers achieve 12-15 turns. For new vehicles, 5-8 turns (45-75 days) is typical due to manufacturer allocation timelines. Below 6 turns on used inventory signals a stocking or pricing problem.
How does inventory turn affect profitability?
Faster turns mean lower carrying costs (floor plan interest, insurance, opportunity cost) and more transactions per year. A dealer turning 12x/year with $1,500 gross per unit earns more than one turning 6x/year with $2,500 gross, because the faster dealer generates $18,000/slot/year vs $15,000.
How do I improve my inventory turn rate?
Price vehicles competitively from day one using market data, implement aggressive aging policies (price drops at 30/45/60 days), stock vehicles that match your market demand, and wholesale problem units early instead of chasing retail gross on vehicles the market doesn't want.
What does days supply mean in dealership inventory?
Days supply is how many days of sales your current inventory represents at your current selling pace. If you sell 100 used cars/month and stock 200 units, your days supply is 60 days. Industry best practice is 30-45 days supply — enough selection for customers without tying up excess capital.
How does turn rate differ for new vs used vehicles?
Used vehicles should turn faster (8-12x/year, 30-45 days) because they depreciate daily and carry floor plan costs. New vehicles typically turn 5-8x/year (45-75 days) due to manufacturer allocation cycles. Different category targets mean you need to track turn rates separately for accurate performance measurement.