For founders signing a lease

Know the number before you sign.

The rent and the build-out are on your LOI. The revenue is a guess. Four Wall Math starts with the costs you can verify and tells you what revenue has to be true — how many customers an hour, at what ticket, for this location to work.

Free to model, no signup. We'll email you the plan when you export it.

Solving for revenue · 1,800 SF café
At a 15% four-wall margin, this box has to earn
In range
Required mature revenue
$46K/mo
310 $/SF/yr · 18 customers/hour at peak · $12 ticket
Rent$5.50/SF/mo · $10K/mo
Build-out$180K · $3K/mo amortized
Move the sliders. The revenue requirement moves with them — instant, tactile, honest.

Costs first. Requirement second. Decision last.

Each tab is a decision, not a spreadsheet. Everything recomputes the moment a slider moves.

1

Company

Tell the model who you are, what you sell, and where you'd operate. Cost tier calibrates every benchmark band to your market.

  • Business type + one-liner
  • Prime / Mid-market / Value cost tier
  • Industry benchmark bands baked in
2

1. Single-Site Model

Enter the lease, build-out, and cost structure you can verify. The model solves for the revenue, ramp, and margin the deal requires. If you're already operating, start from your real revenue instead and solve the other direction.

  • Solve for required revenue at maturity
  • Target margin or target payback mode
  • Reality verdict graded against benchmark bands
3

2. The Scale Model

Stamp out locations on a horizontal timeline. Customize each one, watch consolidated cash, revenue, and EBITDA breathe.

  • Manual drops or bulk stamping
  • Per-location economic overrides
  • Consolidated cash, revenue, and EBITDA across locations
4

3. The Financing Model

Stack tranches of term debt, revenue-based financing, founder capital, or equity against the full scale plan.

  • Fund-the-gap auto-sizing
  • IRR-solved effective cost per tranche
  • See the financed J-curve vs. the naked one
5

4. The Sensitized Plan

A living document that rewrites itself as you flex drivers. Export a plan that has already been stress-tested.

  • Driver sliders + narrative in one view
  • "What has to be true" sensitivity tables
  • Downloadable plan for your lender, landlord, or investor — emailed to you
6

Benchmark Bands, everywhere

Every key metric is scored against industry-realistic ranges — tuned to your business type and cost tier.

  • In-range / Stretch / Off-the-map pills
  • Reality Check panel front-and-center
  • Never fly blind on rent, labor, or margin

Built for people signing personal guarantees.

If you're putting your name on a lease for a physical business — whether you sell by the hour, the cover, the ticket, or the visit — this is for you.

Café & coffee
Transactions × ticket × hours
Restaurants
Seats × turns × check
Fitness studios
Classes × seats × fill rate
Salons
Chairs × bookings × price
Med spas
Provider hours × treatments × price
Storefront Accelerator

The model tells you what has to be true. It can't tell you how to make it true.

Negotiating the TI allowance and the free-rent months. Actually hitting the ramp. Who to hire before you open the doors. How to tell this story to someone writing a check. That's twelve weeks with operators who have opened these businesses themselves.

Find out what has to be true.

Ten minutes with Four Wall Math beats ten weeks of spreadsheets. Start with what you can verify, and let the model tell you the rest.