As the small-business downturn drags on, the market is flooded with cafés up for sale. Every listing leads with the same pitch: monthly revenue in the tens of millions of won. What the ads never mention is how much of that revenue gets eaten up every month by rent and labor costs, or how that revenue was generated in the first place. This piece walks through the two core diligence checks behind any smart café acquisition — reading a shop's cost structure and verifying how its revenue actually gets made. By the end, you'll have a clear framework for how far to trust a listing's numbers, and what you need to verify yourself.
What "High Monthly Revenue" Doesn't Tell You
High revenue usually comes bundled with high rent and overhead. A location with heavy foot traffic commands steep rent, and a café with more customers spends proportionally more on labor and ingredients. So there's no guarantee that a high-revenue shop is actually a profitable one. The trouble starts when a hopeful buyer, dazzled by the top-line number, overlooks this cost structure — or hands over "key money" (a lump-sum premium paid to the outgoing tenant for the right to take over the lease, common in Korean retail) without understanding why the revenue exists at all. Shops bought under those conditions are the ones most likely to fail. The real starting point for evaluating a café acquisition isn't the size of the revenue, but a clear-eyed view of what's draining out of it every month, and how much.
Step 1: Verify the Cost Structure With Documents and Numbers
Start by reviewing the lease agreement yourself. You need to see the monthly rent and common-area fees, how much time is left on the lease, and the terms for any rent increase at renewal — only then can you weigh the advertised revenue against what it actually costs to keep the doors open. Labor is next. Figure out how many staff, working how many hours, it takes to produce the current revenue — and how much of that labor was actually the owner working unpaid. If the current owner has been running the place with family instead of paid staff, and you plan to hire employees after taking over, the same revenue will leave you with a very different amount left over. Once you list out ingredient costs, fees, and utilities line by line and set them next to the revenue figure, the shop's real picture — the one the listing never mentioned — starts to emerge.
Step 2: See for Yourself How That Revenue Gets Made
After cost comes the question of what the revenue actually is. Two cafés can post the same monthly number and get there in entirely different ways. Revenue driven by a strong location survives an ownership change; revenue held up by the previous owner's regulars and personal touch, or inflated by a temporary spike in nearby demand or a discount promotion, does not — and which one you're buying determines your fate after the handover. None of this shows up on paper, so before signing anything, sit in the café yourself, on multiple days and at multiple times of day. Watching who walks in, when, and what they buy will tell you whether that revenue is attached to the location or to the person who used to run it. Revenue attached to a person walks out the door the moment that person does.
Step 3: Calculate the Expected Operating Profit Yourself
Once you've confirmed all of the above, the last step is doing the math. Taking over a café is, in itself, simple: pay the key money, the deposit, and the fixtures cost, and it's done. Making that café profitable is anything but simple. That's why, before signing, you have to work out the expected investment cost, a realistic revenue estimate, and the projected operating profit after expenses — and use those figures to judge whether the deal makes sense. The reason to run these numbers yourself, rather than take the broker's or the previous owner's word for it, is straightforward: whatever the outcome, the consequences of the investment fall entirely on you.
The Final Checklist Before You Decide
Before you sign on the dotted line, make sure you can answer all five of the following.
1. Have you confirmed the rent, common fees, remaining lease term, and renewal terms directly from the lease agreement?
2. Have you verified revenue using actual settlement records, not just the ad copy?
3. Have you visited in person at different times and on different days to observe the actual flow of customers?
4. Have you determined whether that revenue comes from the location, the previous owner personally, or a temporary factor?
5. Have you calculated the expected investment, revenue, and operating profit yourself to assess whether the deal is worthwhile?
If even one of those is unanswered, it's not time to sign yet. Buying a café isn't buying its revenue — it's taking on its entire cost and profit structure, and only buyers who verify that structure end up with a shop that's actually worth the key money.
