$Benchline · Used-Car Inventory & Margin Tool
$99 · one-time Get instant access
For used-car & inventory managers, GMs & independent dealers

See what is aging. Model what could change.

Reconcile non-overlapping aging buckets, calculate days supply and turn consistently, and compare inventory scenarios using your own holding costs.

Downloadable .xlsx workbooks with a buyer guide
Manual inputs · one-time purchase · review imported formulas
Illustrative exampleNot a forecast
Units in stock120
Sales in 30 days78
Days supply46.15
Annualized turn7.8
Replace the sample with your own records. Results depend on your inputs.
See inside

This is the actual tool.

Used-Car Inventory & Margin Tool dashboard

Current sample workbook view. Read the buyer guide for definitions, setup and limitations.

Make the assumptions visible

Potential gross is a scenario, not money earned. Set targets you can justify, account for implementation costs, and compare actual results with your saved starting point. Annualized amounts use an unchanged monthly run-rate; no income or timeline is promised.

What's inside

A clear input-to-decision workflow

Enter your snapshot once. See where your aging, turn and gross really sit, price the holding-cost bleed honestly, and check every figure against dated, sourced benchmarks you can edit.

Tab 01 · Dashboard

Where the lot stands

Dashboard: reconciled aging, days supply, annualized turn and front gross per sold unit.

Tab 02 · What-If

Price the bleed — honestly

What-If: separate velocity, holding-cost and gross scenarios. The summary uses the largest lever; volume and demand assumptions remain visible.

Tab 03 · Benchmarks

Sourced, and yours to edit

Benchmarks: NADA context and editable planning targets. Holding cost is your estimate, not a universal market rate.

The workflow

From an inventory snapshot to a pricing plan

01

Enter the lot

Type your aging buckets, inventory cost, last month's sales and holding cost into the input cells.

02

Read the Dashboard

See exactly where aging, turn and gross fall short — and what the aged units cost you monthly.

03

Run the What-If

Model an explicit target and assumed attainment. This is a planning scenario, not a forecast or guaranteed gain. Overlapping scenarios must not be added.

04

Work the plan

Price aged units to market, tighten recon, and appraise to turn. Re-check weekly.

Where the numbers come from

Benchmarks used-car managers already run by

NADA2026 Slide Guide: match the exact numerator and denominator. Read source.
JM&AHistorical F&I context, not a current-quarter average. Read source.

Other targets and example numbers are illustrative assumptions. No benchmark updates automatically.

Historical references and editable assumptions are labeled separately. Use comparable local data where available.

Who it's for

Anyone accountable for used inventory

Used-car managers Inventory managers GMs & dealer principals Independent dealers BHPH operators Single-point lots

Use your own product mix and enter zero for required categories with no activity. Review every unavailable result.

Questions

Straight answers

Is this a subscription?+
No. One-time $99 — yours to keep.
Excel or Google Sheets?+
Delivered as a standard .xlsx workbook. Open in Excel, or import a copy into Google Sheets and verify calculations, dropdowns and formatting. Native application compatibility is not fully certified.
Do I need my inventory system connected?+
No. You type in your aging buckets and sales from your existing reports — no integration required.
Why does the capture rate default to 35%?+
Model an explicit target and assumed attainment. This is a planning scenario, not a forecast or guaranteed gain. Overlapping scenarios must not be added.
Does it work for an independent or BHPH lot?+
Yes. The math runs on your inputs — enter your units, aging and sales and leave anything that doesn't apply blank.
What if it's not for me?+
30-day money-back guarantee — no questions asked.

Stop paying to age cars. Start working a number you can defend.

XLSX workbook + buyer guide · One-time $99 · 30-day guarantee

Get the Used-Car Inventory & Margin Tool — $99