The Floor Plan Tax
A car on your lot is not free. It feels free, because you already bought it and it's just sitting there looking shiny. But the day it landed, a meter started running, and that meter does not care whether anyone walked the lot today.
That meter is the floor plan. And the longer a unit sits, the more it taxes you — quietly, daily, with no invoice on the desk until it's too late to do anything clever about it.
Aging inventory doesn't sit there. It charges you rent.
What you're actually paying for
Floor plan financing is a line of credit against your inventory. You borrow to buy the car, you pay interest until it sells, you pay it off at the sale. Simple. The trap is in the word "until."
Every day that car is unsold, you're paying interest on the money you borrowed to stock it. On a single unit it's a rounding error. Across forty or sixty cars, with a handful of them quietly creeping past 60, 90, 120 days, it stops being a rounding error and starts being a number that shows up on your statement with your name on it.
Curtailment is the part that bites
Here's the piece newer operators get blindsided by. Most floor plan lenders make you start paying down the principal on a unit once it hits a certain age — often around the 90-day mark, sometimes sooner. That's curtailment. The car hasn't sold, but now you owe a chunk of cash against it just for keeping it.
So the stale unit hits you twice. It's still bleeding interest, and now it's demanding a principal payment out of pocket. You're feeding a car that isn't earning. That's the floor plan tax at full strength.
The cost nobody writes down
The hard costs — interest, curtailment — at least show up somewhere if you go looking. The expensive one is the cost nobody writes down: opportunity. Every dollar tied up in a 110-day unit that should've been retailed at day 30 is a dollar that can't buy a fresh car that would've turned in two weeks.
A lot's money is supposed to move. When it's frozen in aged metal, your whole operation slows down, and you don't feel it as a single painful event. You feel it as a vaguely tighter month, every month, for no reason you can point at.
Why aging sneaks up on everyone
Nobody decides to let a car go stale. It happens because days-in-stock is invisible in the moment. You're busy. The car's still on the lot, still looking fine, and "I'll deal with it next week" is the easiest decision in the world to make sixty times in a row.
By the time a unit feels old, it's usually already past the line where it's costing you real money — and you found out by accident, or worse, by statement.
What actually fixes it
You need a warning before the bill, not after. The unit that's about to trip curtailment should raise its hand on its own, while you still have room to retail it, wholesale it, or reprice it on purpose instead of in a panic.
This is one of the first things I built Mini Nash to watch. It tracks every unit's age against your floor plan terms and tells me — in the morning brief, before I've even had coffee — which car is about to cost me curtailment money, so I can move it while moving it is still my decision. And when a unit's genuinely gone stale, it'll write a fresh price and new listing copy so the car gets a real second shot instead of just sitting there racking up the tax.
The goal isn't to never have an aged unit. Every store does. The goal is to never be surprised by one.
Mini Nash flags the unit about to cost you floor-plan money — before the bill lands.
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