Aged inventory: the silent cost that breaks dealerships
Every day a car sits on the lot costs money. How to calculate the financial cost of aged inventory and what a healthy days-in-stock figure looks like.
Ask a dealership owner what a car sitting on the lot for 60 days costs. The answer, most of the time, is "nothing, it is right there".
Wrong. A parked car costs money every day, quietly, with no invoice and no alert. After miscalculated margin, that forgotten cost is the second largest financial drain in a dealership.
This post covers what working capital is, how to calculate the real cost of a parked vehicle, what healthy days-in-stock looks like, and how to measure it in practice. Figures are in Brazilian reais.
Resposta rápida
A car on the lot costs money every day even without an invoice: tied-up capital, which would otherwise earn the base rate, plus depreciation of 0.5% to 1% a month. A simple calculation is intake value times 2% to 3% a month times days in stock divided by 30. A R$ 60,000 car sitting 75 days has already eaten about R$ 3,750 of margin.
The basic concept: working capital
Working capital is the money your store needs available to operate while cash has not yet returned from sales [1].
In a dealership that covers buying vehicles for stock, paying staff, rent and bills, covering taxes, transfers and inspections on inventory vehicles, and bridging the gap between buying one car and selling the next.
Without enough working capital, a store becomes hostage to the bank through expensive credit, dependent on a partner injecting cash, or it stops buying and loses market share.
The calculation nobody does
Every car on the lot carries two invisible costs.
Cost 1: tied-up capital
The money frozen in a R$ 60,000 vehicle could be buying another car that turns faster, sitting in fixed income earning the base rate — which in Brazil has been running at double digits — or paying down store debt that costs 2% to 3% a month.
That cost of tied-up capital exists, even though it never appears on the income statement. The higher local interest rates run, the higher it is.
Cost 2: continuous depreciation
A car depreciates month after month, parked or driven. In a normal market it loses 0.5% to 1% a month. In cycles where new-car prices are falling — as they have been with aggressive entry from Chinese brands — it can reach 2% a month.
A R$ 60,000 car parked for 90 days: typical depreciation of R$ 1,500 to R$ 3,500 without you doing anything.
The practical formula
The rule dealership management systems use [2]:
Financial cost = Intake value × Monthly rate × (Days in stock ÷ 30)
The monthly rate varies. A conservative figure is 2% to 3% a month, covering opportunity cost plus depreciation plus the operational cost of the lot.
Worked example. A vehicle taken in at R$ 60,000, at a 2.5% monthly cost rate, sitting 75 days:
Cost = R$ 60,000 × 2.5% × (75 ÷ 30) = R$ 3,750
That car has already consumed R$ 3,750 of margin before being sold. If the planned gross margin was R$ 8,000, the real margin is R$ 4,250.
Multiply that across every vehicle on the lot sitting longer than it should, and the number becomes tens of thousands a month.
Healthy days in stock
There is no magic number, but there are reference bands by category.
| Category | Healthy average | Watch above |
|---|---|---|
| Entry-level hatchback | 30–45 days | 60+ |
| Compact SUV | 35–50 days | 70+ |
| Compact pickup | 25–40 days | 55+ |
| Mid-size sedan | 50–75 days | 90+ |
| Full-size pickup | 60–90 days | 120+ |
| Premium / luxury | 70–120 days | 150+ |
| Special / niche | 90–150 days | 180+ |
Five signs your inventory is badly sized
"I have no cash to buy a good car at auction." Capital locked in old stock stops you taking opportunities. Whoever has breathing room buys better.
More than 30% of stock sitting over 60 days. Healthy inventory has a balanced distribution. A concentration of veterans signals bad buying or bad pricing.
You renegotiate bank debt frequently. A clear sign that cash does not close. Insufficient working capital forces you into expensive credit.
You discount aggressively at month end. To cover the bills you sell at the wrong price, and the margin evaporates.
You delay buying because "I haven't sold the old ones yet". You are leaving money on the table. The buying cycle needs to be independent of the selling cycle. If they are glued together, working capital is the problem.
The "special car" trap. That beautiful, rare car that "might take a while but will sell high". It is almost always the biggest drain. In 90 days the financial cost eats the extra margin. In 180 days it becomes a silent loss.
Five concrete ways to reduce the impact
Measure days in stock per car, daily. Without data, decisions are guesses. A management system records the intake date of every vehicle. Reviewing that list once a week reveals which car is becoming a problem before it becomes a loss.
Set a deadline per category and act early. If your rule is "this model does not stay past 60 days", start reducing the price gradually at day 45. Small adjustments of R$ 500 to R$ 1,000 over two weeks often sell better than one large R$ 3,000 cut at the end.
Have a clear auction rule. Past 90 days, send it to auction or the wholesale network. Accepting a controlled loss beats letting the financial cost corrode for another 60 days.
Balance fast turn against high margin. The ideal stock is a mix: 60% to 70% in fast-turning cars with smaller but safer margin, 30% to 40% in higher-margin cars that tolerate more time. Everything concentrated on one side is imbalance.
Negotiate payment terms when buying. If you buy from another dealer or a fleet, negotiating payment at 7 to 15 days gives you working-capital breathing room. Every day of terms is a day of capital working for you.
Calculating your working capital requirement
A simplified formula [1]:
Requirement = Inventory cost + (Monthly fixed expenses × Cash cycle in months)
Where the cash cycle is the average time between spending money and getting it back through a sale.
For a mid-size dealership with R$ 800,000 in average inventory, R$ 60,000 in monthly fixed expenses and a two-month cash cycle:
Requirement = R$ 800,000 + (R$ 60,000 × 2) = R$ 920,000
Close to a million reais of minimum working capital to operate comfortably. A store with less than that operates at the edge.
Why the interest rate matters
With the Brazilian base rate at 15% [3], every R$ 100,000 frozen in inventory carries an opportunity cost of roughly R$ 1,250 a month in basic fixed income alone. Multiply by your average inventory and your average turn time: that is the magnitude of the bill.
When the rate falls, the cost falls with it. But aged inventory is still money lost.
Frequently asked questions
How much does a car sitting on the lot cost?
Two invisible costs: tied-up capital, which could be earning the base interest rate or paying down debt, and continuous depreciation of 0.5% to 1% a month in a normal market. A common calculation is intake value times 2% to 3% a month times days in stock divided by 30.
What is a healthy days-in-stock figure?
It varies by category. An entry-level hatchback turns well in 30 to 45 days, a compact SUV in 35 to 50, a mid-size sedan in 50 to 75, and a premium or niche car in 70 to 150. Well beyond that, the financial cost starts eating the margin.
What is working capital in a dealership?
The money the store needs available to operate while cash has not yet returned from sales: buying inventory, paying fixed expenses, and covering the gap between buying one car and selling the next. Without it, the store becomes hostage to the bank or stops buying.
How do I calculate my working capital requirement?
A simplified formula is inventory cost plus monthly fixed expenses multiplied by the cash cycle in months. A store with 800,000 in inventory, 60,000 in monthly expenses and a two-month cycle needs around 920,000 to operate comfortably.
What should I do with a car that has passed its stock deadline?
Act before it becomes a loss: drop the price gradually as it approaches the limit, and if it passes 90 days, send it to auction or the wholesale network. Accepting a controlled loss beats dragging the financial cost for another two months.
What this means for you
Working capital is the oxygen of the business — without it, any turbulence becomes a crisis. Aged inventory costs real money even with no invoice, so measure it every month. Average days in stock is the number one metric alongside real margin. Accepting a controlled loss beats dragging an invisible cost, because the store that decides fast bleeds less. And a management system pays for itself on what it saves by avoiding one or two stuck cars per quarter.
Per-vehicle holding cost, tracked automatically
Days in stock, accumulated financial cost, alerts when a car passes its deadline. Decide to cut the price or send it to auction at the right moment, not too late.
Saiba mais →Sources
- What working capital is and why you need it. Practical application for vehicle dealerships. Revenda Mais
- Inventory: understanding financial cost / lot cost. Formula and application in management systems. Revenda Mais help centre
- Brazil's central bank holds the base rate at 15% a year. Monetary policy coverage. Gazeta do Povo