The Flathead Valley has one of the strongest vacation-rental markets in Montana. With Whitefish, Bigfork, and properties near Glacier National Park and Flathead Lake drawing visitors year round, short-term rentals (STRs) have become a real business for many local owners — and like any business, they live or die by clean books.
If you own an Airbnb, VRBO, or other short-term rental here, your bookkeeping is more complicated than it looks. Done right, it tells you which property actually makes money, keeps you ready for tax time, and helps you survive the slow season. Done poorly, it leaves you guessing. Here's what STR owners need to know.
Why is STR bookkeeping trickier than it looks?
On the surface, a rental seems simple: guests pay, you collect. In practice, a few things make the books messier than a typical small business:
- Multiple income streams — nightly rent, cleaning fees, pet fees, and damage deposits all flow in differently and shouldn't be lumped together.
- Platform fees — Airbnb and VRBO take a cut and pass along the rest, so what hits your bank account is rarely the full amount a guest paid.
- Seasonality — summer and ski-season bookings can dwarf the shoulder months, which makes "average" monthly numbers misleading.
Each of these needs its own handling, or your profit-and-loss statement won't reflect reality.
Track income and expenses per property
If you own more than one rental, this is the single most important habit: keep the books separate for each property. A blended view hides the truth — one cabin can be quietly subsidizing another, and you'd never know.
In practice that means tagging every dollar of income and every expense to a specific property — using classes, locations, or separate accounts in your bookkeeping software. With per-property tracking you can answer the questions that actually matter: Which unit earns the most per night? Where are repairs eating the margin? Is it time to raise rates, renovate, or sell?
Record gross bookings, not just the payout
This trips up almost every new host. When Airbnb or VRBO sends you money, it's the net amount — the guest's payment minus the platform's service fees (and sometimes taxes the platform collected and remitted on your behalf). It's tempting to just record the deposit that lands in your account, but that understates both your income and your expenses.
The cleaner approach is to record the gross booking amount as income and the platform fees as a separate expense. Your bank deposit still reconciles to the net, but now your books show the real revenue and the real cost of using the platform — which matters for understanding margins and for taxes.
What can you deduct?
Short-term rentals generate plenty of legitimate, ordinary business expenses. Common categories owners track include:
- Cleaning — turnover cleaners between guests
- Supplies — toiletries, paper goods, coffee, linens
- Repairs and maintenance — keeping the property guest-ready
- Utilities — electricity, gas, water, internet, trash
- Management fees — if you use a property manager
- Furnishings — beds, furniture, appliances, decor
- Platform fees — the Airbnb/VRBO cut discussed above
The key is to capture these consistently throughout the year, not reconstruct them in April. What's actually deductible in your situation is a question for your CPA — but clean records make that conversation fast and accurate.
Separate personal use from rental use
Many Flathead owners use a property part of the year themselves and rent it the rest. When personal and rental use mix, the bookkeeping (and the tax treatment) gets more involved — expenses often have to be split between the two. The practical habit is to log the nights you use the property personally versus the nights it's rented, and keep that record with your books. Your CPA will need it, and guessing later is a recipe for trouble.
Don't forget lodging and resort taxes
Short-term rentals can be subject to lodging or accommodations taxes, and some Montana resort communities — Whitefish among them — levy a local resort tax. Whether a given tax applies to you, at what rate, and how it's reported depends on your specific property and jurisdiction. Don't rely on rules of thumb here. Verify your current obligations with the Montana Department of Revenue, your local city or county, and a CPA. Whatever taxes you collect or owe should be tracked separately in your books so they don't get mistaken for income.
Plan for the off-season
The flip side of a strong summer is a quiet winter (or vice versa, near the ski hill). Because STR income is so seasonal, cash-flow planning is essential. Good monthly bookkeeping shows you exactly how much the peak months bring in — so you can set aside reserves for the slow stretch, the mortgage, and the inevitable repairs, instead of being caught short.
Watch for 1099-K forms
Booking platforms may issue you a 1099-K reporting the payments processed through them. The amount on that form reflects gross transactions and may not match what you think of as your "take-home" — which is exactly why recording gross income and platform fees separately pays off. When your books already reflect the full picture, reconciling against a 1099-K at tax time is straightforward instead of stressful.
How AJM Consulting helps Flathead rental owners
AJM Consulting provides local, hands-on bookkeeping for short-term and vacation rental owners across the Flathead Valley — per-property tracking, platform fee reconciliation, clear monthly reporting, and books that are ready for your CPA and any lodging-tax filings. If you own one cabin or a handful of units, we'll help you finally see which ones are working.
Not sure where your books stand? That's what a free consultation is for. We'll review where things are now and tell you honestly what would help most — whether that's ongoing monthly bookkeeping or a one-time cleanup before the busy season hits.