Know Your Nut: The Stacked-Nut Test for Martial Arts School Owners

Updated November 11, 2026

Your real break-even is not the school’s break-even. It is three numbers stacked: the school’s monthly operating nut, your household’s monthly nut, and the money you must set aside for taxes. Know that stacked total every month, find the gross at which it goes negative, and set a tripwire well above that line.

Watch the original session above, where I walked school owners through a simple spreadsheet for knowing their nut.

The Panic Call From a “Successful” School Owner

Over the years I have taken the same phone call from dozens of owners who, by any industry standard, are doing very well. Some of them we helped quadruple or quintuple their gross. Their schools are busy. Their students are progressing. Their staff is growing. And they are panicked about cash flow.

They cannot figure out where the money is going. They tell me the school is doing great, but every month they seem to come up short. Some are carrying a balance on a credit card for the first time in years.

When I get that call, I always ask for a profit and loss statement. But what I am really asking for is two lists. What are your business expenses? And what are your personal expenses? Almost every time, the owner knows the first list roughly and has never written down the second one at all. And neither list has ever been placed on top of the other.

That is the problem. It is not a marketing problem or a sales problem. It is a structure problem. The owner does not know their nut.

In this article I will lay out the tool I have used for decades to fix it. I call it The Stacked-Nut Test. It is one sheet of paper, it takes fifteen minutes a month, and it tells you exactly how far your gross can fall before your life starts going backward.

Why the School’s Break-Even Is Not Your Break-Even

Most owners who have had any coaching know their school’s break-even. Rent plus payroll plus advertising plus the rest. If the school grosses more than that, it is “profitable.”

But a school that breaks even is not paying you. And a school that is profitable on paper is not necessarily paying your mortgage, your car payment, your kids’ activities, your insurance, your groceries and your tax bill. Your accountant figures out once a year whether you owe taxes. That is not the same as you knowing, every month, what the top line has to be for both the business and your household to work.

The strong operators I have known over five decades all know two numbers cold. They know exactly what their business expenses are. And they know exactly what their personal expenses are. Then they know a third thing that matters more than either: what the school’s gross has to be for both to be paid, with tax money set aside, every single month.

The Stacked-Nut Test

The Stacked-Nut Test has three layers. You build each one, stack them, and then test the stack against a falling gross.

Layer 1: The Operating Nut

This is everything the school must pay before anyone in your household sees a dollar. Build it from your actual bank and card statements, not from memory. A typical list:

• Rent, plus any common-area charges
• Payroll for everyone except you, including payroll costs
• Advertising and marketing
• Utilities and phone
• Liability insurance
• Supplies: uniforms, equipment and gear you stock
• Trophies, belts, certificates and student awards
• Printing
• Software, billing and merchant fees
• Loan or equipment payments

Let me build a worked example for a well-run premium school. Two hundred students at $375 a month on a 12-month Trial Enrollment is $75,000 a month in tuition. A reasonable operating nut for that school might look like this:

Line	Monthly
Rent	$8,000
Payroll (staff, not owner)	$18,750
Advertising	$9,000
Utilities and phone	$1,200
Insurance	$600
Supplies, awards and printing	$4,200
Software, billing and merchant fees	$2,250
Equipment and loan payments	$1,000
Operating nut	$45,000

That payroll line sits at 25% of the gross, which is where I like it. Advertising is 12%. Rent is under 11%. This is a healthy structure.

Layer 2: The Household Nut

Now the part nobody writes down. What does your household actually cost per month? Not what you think it costs. What it costs. Mortgage or rent, car payments, insurance, utilities, groceries, children’s activities, debt payments, subscriptions, travel and the rest.

Pull three months of personal statements and average them. Most owners who do this for the first time are surprised by the number, and almost never in a good way. For our example, call it $15,000 a month.

Layer 3: The Tax Set-Aside

The school’s profit is not yours to spend until the tax bill on it has been covered. I am not your tax advisor, and the right amount depends on your structure and situation, so get the number from your accountant. What matters here is that it becomes a monthly line, not an April surprise. For our worked example, use $5,000 a month as a placeholder.

Stack the Layers

Now put them on top of each other:

Layer	Monthly
Operating nut	$45,000
Household nut	$15,000
Tax set-aside	$5,000
Stacked nut	$65,000

That $65,000 is the real break-even for this owner. Not $45,000. At a gross of $75,000, the school is not $30,000 ahead. The owner is $10,000 ahead. That is a very different feeling, and a very different set of decisions.

Running the Downside Table

Knowing the stack is half the test. The other half is finding out how much room you really have. Take your current gross and knock it down in steps. Ask, at each step, what is left after the stack.

Gross	Change	After the stack	Status
$75,000	Current	+$10,000	Fine
$71,250	-5%	+$6,250	Tight
$67,500	-10%	+$2,500	Something has to give
$63,750	-15%	-$1,250	Going backward
$60,000	-20%	-$5,000	Living on credit
$56,250	-25%	-$8,750	Upside down

Look at what that table says. This school is busy, well priced and well run. And a 15% dip, which can come from one bad summer, one lost instructor or one lease renewal, puts the owner into the red every month.

That is exactly how the panic call happens. Say this owner was grossing a fraction of this a few years ago and felt fine. Then the school grew several times over. The operating nut grew with it, which is normal. The household nut grew too, because success felt permanent. Then the owner took an eye off the ball for a few months and the gross slid to $60,000. On paper that is still a strong school. In real life it is $5,000 a month negative. For a few months the owner covers it with a credit card. Then they are upside down and stressed, and they cannot understand why, because the school is “doing fine.”

The downside table makes that slide visible before it happens.

Set the Tripwire

Once you know where your stack goes negative, set a tripwire above it. The tripwire is the gross number that, if you fall below it for one month, triggers action immediately. Not a quarter later. That month.

I set the tripwire at least 10% above the stacked nut. In our example, $65,000 plus 10% is $71,500. This owner is grossing $75,000, so the cushion between where they are and where they must act is under 5%. That is too thin, and the test just told them so while they still have time to fix it.

When the tripwire trips, three things happen:

• Marketing goes up, not down. The instinct is to cut advertising to save money. That is backwards. You fix a falling gross by enrolling more students. Advertising that produces enrollments is the last line you cut.
• The renewal and retention numbers get audited. A falling gross in a premium school is usually a back-door problem before it is a front-door problem. Who stopped coming, who did not renew, who is on an informal hold?
• The household nut freezes. No new personal commitments until the gross is back above the tripwire.

How Owners Raise Their Own Stack Without Noticing

The stacked nut does not go up by accident. In my experience, three things push it up, and they all feel like progress when they happen.

The Facility Leap

The single most common mistake in structuring a school’s costs is rent that is too high. There is a natural pull to build the showcase location once you have some success. Many owners start in a small, plain space. It gets busy. Then, instead of moving up incrementally to something a little nicer, with a little more foot traffic and a little more visibility, they leap from small to unnecessarily large.

Years ago, a friend of mine ran one of the most profitable small schools I have ever seen. A modest space, about 1,300 square feet, on a second floor. It was bursting at the seams. It produced more net profit as a percentage of gross, and more total cash, than schools several times its size. Then a big end-cap space came available. He took it, and his rent went up more than tenfold.

What happened next is what almost always happens. His active student count dropped. His gross dropped. And his net evaporated. The bigger space did not bring bigger enrollment. It brought a bigger nut.

Bigger is not better when it comes to facility. Move up one step at a time, and only when the stacked nut can absorb the new rent with the tripwire still well clear.

Payroll Inflation

The second mistake is letting payroll inflate. It happens one reasonable decision at a time. A part-timer gets more hours. A new role is created because the owner is tired. A raise is given without a matching increase in responsibility or results. None of them is wrong on its own, but together they add up.

I keep payroll at about 25% of the gross in a school with a full-time program director and instructor. When payroll creeps past that without the gross rising to match, the stack climbs and the cushion shrinks. Pay your best people well. Add at the top, where someone produces more enrollments, renewals and retention. Do not keep adding hours at the bottom because the school feels busy. More on building that team well is in the Staff & Leadership hub.

Household Creep

The third push comes from home. The school has a great year, so the house gets bigger, the cars get newer and the commitments get longer. None of that is wrong if the stack still clears with a healthy cushion. It is very wrong when the household nut is built on your best month instead of your typical month.

A simple rule: size your household nut so that it still clears the stack after a 15% drop in gross. If it does not, you are betting your family’s stability on the school never having a bad quarter.

How I Ran This Across Multiple Schools

Even thirty years ago, my schools were run by a full-time program director and instructor, with me as an absentee owner. Every school had this sheet. So did the organization as a whole.

That meant I knew, on the first of every month, what payroll was going to be, what I had to write in rent checks, and what the advertising would cost. I knew each school’s operating nut was in a certain range. I also knew what happened above it. If a school beat its target, the staff earned an agreed bonus between them, and I knew exactly how much would be left after that. There were no surprises, because the numbers were written down and stacked before the month began.

You do not need multiple schools to run it this way. One sheet, one school, one household. The discipline is the same.

Widening the Gap From the Top

So far I have talked about the bottom of the table. The other way to protect yourself is to raise the line you are standing on.

Two levers matter most. The first is price. A school charging the industry’s commodity average of $140 to $185 a month needs more than twice as many students to cover the same stacked nut as a school charging $375. Every month that school is closer to the line, and every dip hurts more. Premium tuition of $347 to $397 is not greed. It is the cushion that lets a school survive a bad summer. The Pricing hub covers how to get there.

The second lever is retention. A school losing 3% to 5% of its students a month has to replace a large share of its student body every year just to stay level. A school held below 2% a month keeps its gross steady through slow months, which keeps it away from the tripwire. Keeping a student costs a fraction of what it costs to replace one, five to seven times less.

Put both together and the million-dollar math gets simpler. A million dollars a year is $83,333 a month. At $375 a month with sub-2% attrition, that is roughly 222 students, which is a well-run school, not a giant one. More on that path is in the Million-Dollar hub.

The Fifteen-Minute Monthly Ritual

Here is how to make the Stacked-Nut Test a habit:

1. On the first of the month, update the operating nut from last month’s actual statements.
2. Update the household nut from your personal statements. Be honest.
3. Confirm the tax set-aside with your accountant each quarter, and actually move the money.
4. Rebuild the downside table using last month’s real gross.
5. Check the tripwire. If last month’s gross fell below it, act this month.
6. Look for growth in any layer that the gross has not matched. That is the next problem, caught early.

It is not complicated. Most owners avoid it because they are afraid of what the number will say. But the number is the same whether you look at it or not. Looking at it is the only way to change it.

Frequently Asked Questions

What is a martial arts school owner’s real break-even point?

It is the stacked nut: the school’s monthly operating expenses, plus your household’s monthly expenses, plus the amount you must set aside for taxes. The school’s own break-even only covers the first layer. Until the gross clears all three, the owner is going backward even if the school looks profitable.

How much of a cushion should a school keep above its break-even?

Set a tripwire at least 10% above your stacked nut and keep your actual gross comfortably above that. A healthy school can absorb a 15% drop in gross without the owner going negative. If a 15% dip puts you in the red, either the school’s costs or your household’s costs are too high for your current gross.

Should I move to a bigger facility when my school is full?

Only one step at a time, and only if the stacked nut still clears with the tripwire well below your current gross. Leaping from a small, busy space to a much larger one often drops the active count and the gross while the rent multiplies. Move up incrementally to more visibility and foot traffic, not to the biggest space available.

Your Next Step

If you cannot write your stacked nut down right now, that is the first thing to fix. Book your free Personal Evaluation, a $1,297 value, and we will build your stack, run your downside table and show you where your structure is leaking and how to widen the gap. Claim it at martialartswealth.com/go/evaluation.

About the Author

Stephen Oliver, MBA and 10th Degree Black Belt, is the Founder and CEO of Mile High Karate and Martial Arts Wealth Mastery, CEO of NAPMA (National Association of Professional Martial Artists), and Publisher of Martial Arts Professional magazine. A martial arts school owner since 1975, he and his coaching team — including Grand Master Jeff Smith and Dr. Greg Moody — have helped school owners across the world build $1M+ schools.