Ed 
If you are using Airbnb’s “estimated earnings” tool to decide whether an Austin-area short-term rental will cash flow, stop. That number is the single most optimistic figure in the entire deal, and I have watched it talk smart people into bad purchases more times than I can count. The real answer to “will this property actually cash flow” comes down to four numbers and an honest expense column, and most folks get both wrong before they ever sign anything.
I own four short-term rentals (three in Texas, one in South Carolina), and I built StaySTRA because I got tired of guessing. So lets walk through how I pressure-test an Austin STR investment before I put money down, using a realistic Hill Country property as the example. No hype. Just the math I actually run.
Why Airbnb’s Earnings Estimate Lies to You
Here is the thing about that “you could earn $X” banner. Airbnb wants you to list. It is a marketplace, and more listings is good for them whether or not the deal is good for you. The estimate usually assumes strong occupancy, a healthy nightly rate, and zero of the expenses that actually eat your return. It is a gross revenue dream wearing a net income costume.
The reality is your bank account does not care about gross revenue. It cares about what is left after the cleaner, the manager, the county tax office, and the insurance company all take their cut. So lets build the number from the ground up instead of trusting a banner.
The Four Numbers That Actually Matter
Strip away the noise and a short-term rental analysis is really just four figures. Get these right and you have your answer.
ADR (average daily rate). This is what a booked night actually rents for, averaged across the year. Not your peak July 4th weekend rate. The blended average, slow Tuesdays in February included.
Occupancy rate. The percentage of available nights that actually book. A lot of new investors plug in 70 or 80 percent because that is what a hotel does. Most Hill Country STRs land closer to 50 to 60 percent on a real annual basis, and I underwrite low on purpose.
Gross revenue. ADR times occupancy times 365. That is your top line before a single dollar of expense.
Net operating income. Gross revenue minus every operating expense. This is the only number that tells you whether you are running a business or a hobby that happens to lose money.
Lets put real figures on it. Say you are looking at a four-bedroom house in Lago Vista at around $450,000, which is right in line with the area (the median sale price in Lago Vista ran about $431,000 this spring). You run the comps and you are confident in a $325 ADR at 55 percent occupancy.
That is $325 times 0.55 times 365, which comes to roughly $65,000 in gross revenue. Sounds great right. That is exactly the number Airbnb would put in lights for you. But we are not done, because $65,000 is not what you keep.
The Expense Side Nobody Wants to Talk About
Here is where the deal lives or dies, and it is the part the earnings estimate conveniently skips. Lets take that $65,000 and run it through what an Austin-area STR actually costs to operate.
Management. If you are not local or you do not want a second job, a full-service STR manager runs 20 to 30 percent of revenue. Call it 25 percent here, so about $16,250 gone right off the top. (You can self-manage and keep that money, but then you are the one answering the 11pm “the hot tub is cold” text, so factor your time honestly.)
Cleaning. Even if guests pay a cleaning fee, turnovers cost real money and any gap gets eaten by you. Budget a few thousand a year that does not get fully reimbursed.
Maintenance reserve. Short-term guests are harder on a house than long-term tenants. Stuff breaks. I set aside a reserve every year because the AC will quit, and it will quit in August, and it will quit during a booked weekend. Count on it.
Property tax. This is the one out-of-state buyers underestimate the most. Texas has no state income tax, which is great, but we pay for it with property taxes. On a $450,000 Hill Country property you can easily be looking at $8,000 to $10,000 a year, and unlike your primary home, an investment STR does not get a homestead exemption.
Insurance. STR insurance costs more than a standard homeowner policy because the carrier knows strangers are sleeping there every weekend. Utilities, internet, streaming, pool and hot tub service, supplies, and platform fees all stack on top.
Add it all up and it is normal for total operating expenses to run 45 to 55 percent of gross revenue on a managed Hill Country STR. So that $65,000 top line realistically becomes something in the neighborhood of $30,000 to $35,000 of net operating income before your mortgage. Whether that cash flows depends entirely on what you financed and at what rate. Dial the occupancy assumption down to 50 percent and trim the ADR a little, and a lot of “obvious” deals quietly stop working. That is the whole point of doing this before you buy, not after.
Where to Get Real Austin STR Data (Not a Guess)
The four numbers only work if the inputs are honest, which means you need real comparable data for the specific submarket, not a national average and not a banner ad. There are raw comps out there, AirDNA being the best known, but raw comps without context will fool you. One trophy property pulling huge nightly rates can drag a market average up and make a tired three-bedroom look like a goldmine it is not.
This is exactly why I built StaySTRA. You can drop any specific property into the StaySTRA analyzer and get a revenue projection built from real comparable rentals in that submarket, with the context that tells you whether a number is achievable or just a top-of-market outlier. I run every one of my own deals through it, and I underwrite to the conservative end of what it shows me. When two independent sources disagree, I trust the lower one. A revenue estimate you talked yourself into is the most expensive number in real estate.
If you want the full framework for analyzing a deal start to finish, I wrote that up separately in how to analyze an Airbnb investment property.
The Austin Market Reality: Where STRs Actually Work
Now the part that catches out-of-state buyers. Austin proper is not as closed as its reputation suggests, but it is procedural, and the paperwork is where people trip. There is no citywide cap on licenses, and since February 2025 short-term rentals are an accessory use in every residential zoning district. The 1,000-foot rule is narrower than most people think: it only stops a single operator from running two of their own sites within 1,000 feet of each other, so a neighbor’s STR does not block yours. Since July 1, 2026, platforms like Airbnb and VRBO must display a valid license number and pull unlicensed listings within ten days of a city request. If your plan is to buy a non-homestead investment STR inside the Austin city limits and just list it without a license, that plan has a real legal problem. Get the license, budget $836.30 for it, and read the HOA covenants, which is where most Austin STR deals actually die. I covered the specifics in our breakdown of the Austin short-term rental rules for 2026.
The active, investor-friendly STR market is the Hill Country, outside Austin’s city jurisdiction. That is Lago Vista, Spicewood, Dripping Springs, and out into Burnet County. These are the areas where you can run a non-homestead vacation rental with little or no permitting at all, and where the lake and Hill Country views drive the kind of nightly rates that make the math work. Pricing varies a lot by submarket, from the low $400s in Lago Vista to the $600s in Dripping Springs and north of $700,000 in Spicewood this spring, so the deal you can underwrite in one is not the deal you can underwrite in the next. Geography is part of the analysis, not a detail.
Frequently Asked Questions
Run the Numbers Before You Fall in Love With the View
The properties that cash flow are almost never the ones with the prettiest listing photos. They are the ones where the four numbers hold up under conservative assumptions and the expense column has been told the truth. That is the difference between a short-term rental Austin TX investors brag about and one they quietly sell at a loss two years in.
So before you buy any Hill Country STR, run it through the StaySTRA analyzer and pull a real revenue projection on that exact address. Then, if you want a walkthrough of the whole buying process from offer to first booking, grab our guide on how to buy an Airbnb. And if you want a second set of eyes on a specific Austin-area deal from someone who actually owns these things, reach out to me directly. I would rather talk you out of a bad one than watch you find out the hard way.
