Restaurant · Guide · Updated July 2026

3 Things to Know Before Opening a Restaurant (And What Happens If You Skip Them)

More than 80% of restaurant owners fail because they ignore three things that are completely within their control. These are not complex. They are foundational. Get them right before you sign a lease, and your odds flip dramatically in your favor.

The three things: know your numbers, know yourself, and know your customers.

Why Do Most Restaurants Fail Before They Even Start?

They walk in optimistic and walk out broke. Not because the food was bad. Not because the location was wrong. Because the owner never learned to read the financial health of the business, never communicated their vision to their team, and never truly understood who was sitting at their tables.

This guide covers all three, with the specific targets you need to actually hit.

Know Your Numbers: The Three Costs That Determine Everything

Math is not my forte. It was not yours either when you started. That does not matter. You do not need to be an accountant. You need to track three numbers every single week.

Here is what I learned the hard way. A few years ago I was audited by the CRA, Canada’s tax revenue agency. They accused me of owing more than $200,000. I did not have proper bookkeeping, I did not have proper receipts, and every chance they had to ding me, they took it. I ended up paying hundreds of thousands of dollars back for something I had not actually done wrong. Poor record-keeping cost me that money. Please do not make me any richer by repeating my mistakes. Learn from them.

Because I spent time understanding my numbers after that audit, I was able to go from $200,000 in debt with the tax agency to growing my ice cream brand internationally. Numbers are that powerful.

Here are the three cost targets to aim for:

What percentage should rent be?

Keep rent at or below 15% of revenue. This is the number one place operators blow up their margins before they ever open. They sign a lease based on optimism, not math.

Before you sign anything, do this exercise. Walk into a competitor’s restaurant that is similar in concept and price point. Observe for three days. Count covers. Note what people are ordering. Estimate the average ticket price. If the average ticket is $20 and roughly 100 people come through per day, that is $2,000 in daily revenue. Multiply by 25 operating days and you get $50,000 a month in estimated revenue. Fifteen percent of $50,000 is $7,500. That is the most you should pay in monthly rent for that location.

There will be good months and slow months. Average it out and use your best discretion. The 15% target is a guardrail, not a guarantee. But it tells you whether you are on the right track before you commit.

What should food cost percentage be?

Target 30%, and never exceed 35%. Food cost covers everything that goes into producing the meal: ingredients, the people preparing the food, packaging like takeout boxes, and any supplies consumed in production. If your food cost is running above 35%, you are either over-ordering, experiencing spoilage, dealing with theft, or your menu pricing is off. Usually it is a combination of all four.

How do you calculate labor cost?

Target 30%. Labor includes servers, cooks, managers, and most importantly, yourself. This is the mistake I see constantly from operators I have mentored. They look at their P&L and think they are profitable because they never added their own time to the calculation. If you are working 60 hours a week in the restaurant, that time has a cost. Put it in the numbers.

Once you have a manager running the floor, use these percentages as their KPIs. Food cost and labor cost are measurable, actionable, and controllable. Your manager can reduce spoilage, stagger schedules, and incentivize staff to grow the top line while keeping costs tight. Hold them to those numbers.

What does 25% gross margin actually buy you?

When rent is at 15%, food at 30%, and labor at 30%, your three big costs total 75%. That leaves 25% to cover utilities, any remaining management overhead, and your actual profit. The tighter you hold food and labor, the more of that 25% becomes take-home. That is the math behind every healthy restaurant. Hit those three targets and the business works. Miss them and no amount of marketing fixes the problem.

Know Yourself: Why Your Vision Is the Only Thing That Scales

Picture this. You are on a beach somewhere warm. The people you love are next to you. And on the other side of the world, someone competent, someone who genuinely cares, is running your restaurant and delivering the experience exactly as you envisioned it.

That is not a fantasy. That is what happens when you have communicated your vision clearly enough that someone else can execute it without you standing over their shoulder.

Most operators complain they cannot find great help. I push back on that every time. The problem is not the talent pool. The problem is that the owner never translated their vision into something another person could actually act on. Your team cannot deliver an experience they cannot see. If you can describe exactly how a customer should feel when they walk through your door, what the product standard looks like, what good service feels like in your specific concept, and why it matters, then the right people will rally around that. That is culture. Culture is not a poster on the wall. It is a vision communicated with enough clarity and purpose that your team adopts it as their own.

The operators who are working 9 to 9 every single day with no holidays are not working harder than everyone else. They just never built the system that lets the business run without them. Knowing yourself means knowing your vision well enough to hand it off.

Know Your Customers: The Gap Between What You Serve and What They Need

Every restaurant owner has a vision for the experience they want to create. The blind spot is failing to check whether that vision matches what the customer actually came in for.

If you are running a fast-casual spot near an office district, your lunch customer is not there for a two-hour dining experience. They are there to grab something good and get back to their desk. If you design your service around a slow, wine-and-dine experience, there is a misalignment. That misalignment is why people do not come back.

Know your customer’s demographic. Know why they are walking through the door. Know what they value and what frustrates them. Know your peak hours. When your product, your pricing, your service speed, and your atmosphere all speak to the same customer, you get repeat business. You do not need aggressive marketing tactics to pull in one-time visitors. You build loyal customers who come back because the experience consistently gives them exactly what they came for.

That alignment between what you offer and what your customer needs is the foundation of every restaurant that actually lasts.

The Bottom Line

Know your numbers, know yourself, and know your customers. These three principles sound simple because they are. Simple does not mean easy. The 80% of operators who fail are not failing because the concepts are complicated. They are failing because these basics get skipped in the excitement of opening. Control your rent at 15%, your food cost at 30%, and your labor at 30%. Communicate your vision with enough clarity that someone else can execute it. Build your entire operation around the specific customer you are serving. Do those three things consistently and the business takes care of you, not the other way around.

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