BUILDER’S FINANCE CO — FINANCIAL EDUCATION FOR REAL ESTATE OWNERS AND OPERATORS

You bought the property. Now build the business.
Most real estate owners figure out the property side quickly. The financial side — deal analysis, tax strategy, bookkeeping, and entity structure — is where the real wealth is built or lost. Builder’s Finance Co was built to close that gap.
THE SCOPE
The complete financial system for a short-term rental — tax, bookkeeping, deal analysis, and entity structure
THE STANDARD
Written by a credentialed CPA — not a course creator or a marketer
THE EXPERIENCE
Built from two decades of reviewing real STR financials — not research from the outside
THE AUTHOR
Matt Nunn, CPA — public accounting since 2006
THE PROBLEM
Stop guessing your way through your STR finances.
Most short-term-rental education covers how to find, furnish, and list the property. Almost none of it covers the financial side at any real depth — and the financial side is where most operators quietly leave money on the table every year.
Wrong entity structure. Sloppy books. Missed deductions. Tax surprises at filing time. These aren’t uncommon problems. They’re the default for owners who learned the hosting side and never got a straight answer on the finance side.
The STR Financial Bible is the fix. If you own a short-term rental, the financial fundamentals that decide whether it makes money — tax strategy, bookkeeping and financial reporting, deal analysis, and entity structure — apply to every property you run. The Bible covers all of it, with the specificity that actually matters. Written by a practicing CPA, not an influencer.
That’s the gap The STR Financial Bible closes.
Now Available
The Short-Term Rental Financial Bible
The complete financial and tax guide for STR operators.

NOW AVAILABLE
The Short-Term Rental Financial Bible
The complete financial and tax guide for STR operators.
If you own a short-term rental and you’re not completely sure you have the financial side of your business set up right — this book was written for you. Eleven chapters covering the complete financial picture: how to analyze and finance deals, how to set up your books and read your financials, how to minimize your tax bill legally, and how to build the entity structure and systems that hold up as you grow.
- ✓ The average rental period test and the 14-day rule — how they work and what happens if you get them wrong
- ✓ Deal analysis and underwriting — how to know if a property actually pencils before you buy it
- ✓ DSCR loans and STR financing — how to structure debt without killing your returns
- ✓ Bookkeeping from scratch — QuickBooks setup, chart of accounts, and clean, defensible records
- ✓ Entity structure — LLC vs. S-Corp, and when each one makes sense for an STR operator
- ✓ Cost segregation, bonus depreciation, and the STR loophole — the advanced strategies most operators never use
- ✓ How to scale your financial systems as your portfolio grows
Instant digital delivery.
WHY BUILDER’S FINANCE CO EXISTS
Real estate owners deserve better financial education.
Founded by Matt Nunn, CPA
Matt Nunn has been a licensed CPA since 2006, working across commercial real estate and, increasingly, directly with short-term rental operators. Most financial content in the real estate space is either too generic to be useful or technically wrong in ways that cost real money. The operators paying the price are the ones who followed the advice.
Builder’s Finance Co was built to be different. Every book, article, and resource on this site comes from nearly 20 years of hands-on public accounting work — commercial real estate audit and tax, and then years spent working directly with short-term rental operators. Every topic covered here is one that’s been worked in professionally, not researched from the outside.
The frameworks and strategies here come from actual tax returns, accounting clean-ups, entity restructurings, and the financial questions that come up at every stage of building a real estate portfolio. This isn’t theory. It’s what works, written plainly, for owners who are serious about the financial side of their business.
THE SYSTEM
A complete financial system for your short-term rental
Builder’s Finance Co is a CPA-designed financial operating system for self-managing short-term rental owners. The STR Financial Bible is the foundation, supported by practical implementation tools, a growing knowledge base, and free educational resources.
The STR Financial Bible
A comprehensive CPA-written reference manual: the complete account structure, worked examples, and the systems to set your books up correctly and keep them that way.
The Knowledge Base
A growing library of CPA-written guides covering Tax Strategy, Bookkeeping, Deal Analysis, and Entity Structure. Free to read.
The Free STR Tax Mistake Checklist
A free, CPA-written checklist of the mistakes that most often trip up short-term rental owners, delivered to your inbox.
✓ The STR Financial Bible ✓ CPA Knowledge Base ✓ Free STR Tax Mistake Checklist
Not ready to buy yet?
Start with the free STR Tax Mistake Checklist — the 10 most common financial errors STR owners make, and exactly how to fix them.
THE KNOWLEDGE BASE
The knowledge base for short-term rental owners
In-depth, CPA-written articles across the four financial pillars of a short-term rental.
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The Complete Guide to STR Bookkeeping: How to Set Up and Run the Financial Side of Your Short-Term Rental
Read the article →: The Complete Guide to STR Bookkeeping: How to Set Up and Run the Financial Side of Your Short-Term RentalBookkeeping is the operating system your whole short-term rental runs on — deal analysis, tax strategy, and financing all read…
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The Complete Guide to Airbnb Tax Deductions: What STR Operators Can Actually Write Off
Read the article →: The Complete Guide to Airbnb Tax Deductions: What STR Operators Can Actually Write OffA CPA’s guide to what short-term rental operators can actually write off — platform fees, depreciation, mileage, the home-office rules,…
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Piercing the Corporate Veil: How Commingled Accounts Destroy Single-Member LLC Protections
Read the article →: Piercing the Corporate Veil: How Commingled Accounts Destroy Single-Member LLC ProtectionsForming an LLC is not the same as maintaining it. Courts examining liability don’t care about your certificate of formation…
FREE RESOURCE
Fix the 10 most common STR financial mistakes — free.
The STR Tax Mistake Checklist covers the errors that cost short-term rental owners the most — and exactly how to fix every one.
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