# The back-of-envelope math luxury executives do before any deal
A private equity associate sits across from the founder of a Milanese leather goods house. The founder wants a valuation of 8x EBITDAEBITDAEBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) measures a company's operating profitability before financing and accounting decisions, used to compare core performance across firms.View full definition → (earnings before interest, taxes, depreciation and amortization, a proxy for operating cash flow). The associate pulls out a notebook, not a model. In four minutes, using nothing but average unit retail, square meters and last year's like-for-like number, she knows whether the multiple is defensible. That napkin math is the actual gatekeeping skill in luxury dealmaking. This lesson teaches you the five calculations she runs.
Luxury deals move fast: trade shows, dinners, five-minute hallway pitches at events like Pitti Uomo or VivaTech. Nobody opens Excel at a cocktail reception. Executives carry a small set of ratios in their head to sanity-check any pitch before the formal due diligence (the investigation of a target company's financials, operations and legal standing before a deal closes) even begins.
These calculations don't replace due diligence. They decide whether due diligence is worth starting.
AUR (Average Unit Retail) is the average selling price per item. Compare it to COGS (Cost of Goods Sold, the direct cost to produce the item).
Worked example: a handbag brand sells at an AUR of €2,200. Production cost is €280. That's a ratio of ~7.9x. Established hard-luxury leather houses (Hermès, Chanel) often run 8x to 12x retail-to-cost on iconic bags, as widely estimated in industry commentary; contemporary or "accessible luxury" brands often sit closer to 3x to 5x.
Quick check: if a pitch claims luxury positioningpositioningThe mental space you want your brand to occupy in your target customer's mind relative to alternatives.View full definition → but the ratio is under 4x, either the cost base is unusually high (exotic materials, artisanal labor) or the pricing hasn't caught up to the positioningpositioningThe mental space you want your brand to occupy in your target customer's mind relative to alternatives.View full definition → yet. That's a flag, not a dealbreaker.
LFL growth measures sales growth from stores/channels open at least 12 months, stripping out growth from new store openings. It is the single number every earnings call obsesses over.
Formula: (This year's sales at existing stores − Last year's sales at same stores) / Last year's sales
Worked example: a boutique did €4.2M last year and €4.5M this year, with no new floor space added. LFL growth = (4.5 − 4.2) / 4.2 = 7.1%.
As of recent reporting (2024 to 2025, estimates), the sector's LFL growth has decelerated sharply from the post-pandemic boom of 2021 to 2022, with several major groups reporting low-single-digit or flat organic growth in some regions. LVMH and Kering earnings releases are the standard public reference points; both publish LFL by division. LVMH's investor relations page publishes these figures quarterly, free to read.
This is the calculation that decides whether a Fifth Avenue or Avenue Montaigne flagship makes sense.
Formula: Annual rent / Annual store sales
Healthy luxury retail typically targets a rent-to-sales ratio below 10 to 15%; above 20% is a warning sign unless the store functions as a marketing flagship rather than a profit center (common on Rodeo Drive, Bond Street or Via Montenapoleone).
Worked example: a flagship pays €3M annual rent. To hit a 12% ratio, it needs €25M in annual sales (3M / 0.12). If the realistic sales estimate is €15M, the ratio balloons to 20%, meaning the store likely exists for brand visibility, not margin.
DTC (Direct-to-Consumer: owned boutiques, owned e-commerce) versus wholesale (selling through multi-brand retailers or department stores like Saks or Galeries Lafayette) changes both margin and control.
Quick math: retail channels typically carry gross margins of 65 to 75% for luxury goods (estimate); wholesale margins for the same product are often 15 to 25 points lower because the brand sells at a discounted wholesale price to the retailer.
If a brand pitch shows 60% of revenue still in wholesale, a buyer mentally shaves several margin points off any blended EBITDAEBITDAEBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) measures a company's operating profitability before financing and accounting decisions, used to compare core performance across firms.View full definition → claim, and expects a multi-year, capital-intensive shift to DTC before margins normalize.
Luxury M&A multiples are commonly discussed in terms of EV/EBITDA (Enterprise Value divided by EBITDAEBITDAEBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) measures a company's operating profitability before financing and accounting decisions, used to compare core performance across firms.View full definition →). As of recent deal commentary (2023 to 2025, estimates),:
Worked example: a brand claims €20M EBITDAEBITDAEBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) measures a company's operating profitability before financing and accounting decisions, used to compare core performance across firms.View full definition → and wants €240M. That's 12x, plausible for a well-run mid-size house. If the same brand's LFL growth is negative and wholesale is 70% of revenue, a buyer mentally re-anchors toward 7x to 8x, implying €140M to €160M, before a single lawyer is engaged.
Knowledge check
1. What is the primary purpose of the back-of-envelope calculations luxury executives use before a deal?
2. A contemporary 'accessible luxury' brand shows an AUR-to-cost ratio of 3.5x while claiming true hard-luxury positioning. What is the most reasonable interpretation of this signal?
3. Why do luxury executives rely on mental math ratios rather than spreadsheet models in early-stage deal conversations?
4. Select ALL correct answers about the AUR-to-cost ratio as a pricing power check.
Select all the correct answers.
5. Select ALL correct answers about why executives use a small set of ratios before formal due diligence begins.
Select all the correct answers.
You don't need precision, you need order of magnitude, always as estimates:
Treat all of these as directional. Bain/Altagamma revises them each year, and post-pandemic travel patterns have made "where purchases happen" versus "who is buying" diverge significantly.
🎬 [VIDEO: "How LVMH Became a $400 Billion Empire" - youtube.com - a concise breakdown of brand portfolio economics and margin structure across a luxury conglomerate, useful for seeing these ratios applied at group level]
Once the quick math passes, professionals move to light verification before full diligence:
1. Pull two to three years of sell-in vs. sell-out data if available, a growing gap means channel stuffing risk.
2. Check store count vs. LFL: if reported growth relies heavily on new stores, the underlying brand health may be weaker than headline growth suggests.
3. Verify rent terms: percentage rent (rent tied to sales) versus fixed rent changes flagship economics substantially.