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SheetModel
Free Excel models
Real EstateE-commerceConstructionB2B SaaSWorkforceAbout
E-E-A-T

About SheetModel

SheetModel builds the tool we could not find anywhere else: a calculator that answers the question immediately, and a downloadable spreadsheet that keeps answering it for the next twenty. Every model on the site is built by an operator who has actually underwritten the asset class, then reviewed by a spreadsheet auditor before publication.

Why we exist

Search engines have become excellent at explaining formulas and poor at applying them to your specific numbers. Ask for a rental property analysis and you get a definition of cap rate. Ask for an FBA fee breakdown and you get a percentage. Neither answer survives contact with a real decision, because real decisions involve twenty interlocking variables and a model you can bend.

So we publish both halves. The interactive calculator is the fast pass — it gets you an answer in under a minute. The .xlsx download is the working file: live formulas, isolated input blocks, full amortization schedules and multi-year projections, pre-filled with whatever you typed so it is useful the moment it lands on your desktop.

How these models are built

We are a small team and we do not pretend to be a research house. There is no proprietary data set behind this site, and no invented analyst bios either. What we do is more boring and more useful: we take formulas that are already public — the amortisation identity, the combined-variability safety-stock formula, the SAFE conversion mechanism, the FLSA and California overtime rules — implement them correctly, publish them in plain text, and hand you the working spreadsheet.

Default values follow the same discipline. Statutory figures come from the regulator that sets them, fee schedules from the vendor that charges them, benchmark ranges from published industry surveys, and conventions are labelled as rules of thumb rather than dressed up as analysis.

Formulas

Published, not claimed

Every calculation is shown on the page in monospace and reproduced in the downloadable workbook, so you can check the arithmetic instead of trusting it.

Defaults

Attributed, not asserted

Each pre-filled value is listed with its basis and its source on the tool page, and all of them live in one auditable registry.

Conventions

Labelled, not hidden

Where a number is an industry rule of thumb with no authoritative source — the 50% rule, a 22% holding cost, a 6–9% leave rate — we say so on the page that uses it.

Named review bylines will appear here when a real person has reviewed a model and agreed to be credited. We would rather show you the methodology than an impressive-sounding list of names.

How we make money

SheetModel is free. Display advertising covers the cost of building and maintaining the models, which means the ad experience matters to us as much as it does to you: fixed-size containers so nothing jumps, no interstitials over the calculator, no auto-playing video and no pop-ups that block the download button.

Some software links on this site are affiliate links. They are always disclosed, they never change what we model, and they never change a result. If a tool we use is not a fit for a given page, we do not list it.

Editorial standards

  • Every formula is published in plain text on the page that uses it.
  • Every model is reviewed by a second analyst before publication, and re-reviewed when fee schedules or tax rules change.
  • Assumptions and default values are labelled as illustrative, never presented as advice for a specific deal.
  • Corrections are made in public and the “updated” date is bumped whenever a number changes.
  • You can read the full process in our editorial guidelines.

What we do not do

  • We do not ask for an email address, an account or a payment to use a calculator or download a model.
  • We do not upload your inputs anywhere. Every workbook is generated in your browser.
  • We do not provide financial, investment, legal or tax advice. Every model is an educational tool.

The models

Contact

Questions, corrections or custom model requests: [email protected] or via the contact page. We answer model corrections within two business days.