How to Categorize Common STR Expenses

Start from what the chart is for

The point of categorizing well is that every report answers a question (Principle 38, the Structure stage): give meaningful streams their own line, and keep the money you're only holding off the profit-and-loss statement entirely. Most short-term-rental costs are straightforward operating expenses — the trick is less about the easy ones and more about the handful that look like expenses but aren't. So this guide does two things: it lays out where the ordinary costs go, and then it spends real time on the items that fool people, because those are where books break.

(One boundary up front: this is about where a cost lands in your books, not whether it's deductible. Deductibility and how anything is reported on your return are Tax's — this guide points you there, it doesn't decide it. Educational only, not tax advice.)

The ordinary operating expenses — give each a line

These are true operating expenses of the property: they reduce owner-operated NOI and each earns its own account so you can see which one is creeping. Record them where they naturally belong:

• Cleaning & turnover — the cleaner you pay between stays. (Keep this separate from the cleaning-fee income you charge the guest — they're two different accounts; see the cleaning note below.)
• Supplies & consumables — toiletries, coffee, paper goods, linens that aren't durable enough to be an asset.
• Repairs & maintenance — fixing what breaks and keeping things working (distinct from improvements, which may be capitalized — a Tax call).
• Utilities & internet — power, gas, water, trash, Wi-Fi, streaming.
• Property management / co-host — a manager's cut or a co-host's fee.
• Platform & processing fees — the host service fee Airbnb/Vrbo take, and card-processing fees on direct bookings. (Record these as an expense; the payout you receive is already net of them — that's the Record stage's job.)
• Insurance — the STR/landlord policy premium.
• Property taxes — the annual property tax on the real estate.
• HOA dues, licenses & permits, lodging-tax you remit as your own obligation, and software (PMS, dynamic pricing, accounting) — each its own line where it's material.
• Mortgage interest — an operating-adjacent financing cost recorded as an expense, tracked separately from operating expenses because financing sits below NOI. (Its sibling, principal, is not an expense — see below.)

The items that aren't expenses — the ones that break books

These look like expenses because money moves, but they belong on the balance sheet. These errors can materially distort an STR P&L.

• Loan principal — the part of your mortgage payment that pays down the balance is not an expense; it reduces the loan liability. Only the interest portion is an expense. A mortgage payment may therefore need to be split among interest expense, principal reduction, and escrow activity rather than booked entirely as an expense — reconcile the components to your lender statement. Booking the whole payment as an expense overstates your costs and understates your equity.
• Refundable damage deposits you hold — money you're holding that you expect to return is a liability, not income, for as long as it's refundable. It only becomes income (or a damage-recovery item) if and when you keep it for a reason — and what it becomes then follows the event, which is a Tax question.
• Sales / lodging / occupancy tax you collect — tax you collect from guests and remit to a jurisdiction is a pass-through liability, not revenue. If a platform collects and remits it for you, you may never touch it; if you're the one obligated to remit, record what you collected as a liability until you pay it. (Whether you are obligated to remit depends on the jurisdiction and platform — reconcile to the platform statement and confirm your obligation.)
• Capital reserves — money you set aside for future maintenance and capex is an earmark you transfer to, not an expense you deduct. Moving cash into a reserve account is a balance-sheet transfer between accounts; it doesn't hit the P&L. (BFC does apply an analytical reserve allowance when reading performance — but that's a management lens, not a booked expense; see Reading Your STR's Financials.)
• Furniture, appliances & equipment — durable items may need to be recorded as fixed assets rather than a supplies expense you write off at purchase. Where the line falls between a current expense and a capitalized asset — and how it depreciates — is exactly where capitalization policy, elections, and useful life matter, so coordinate capitalization and depreciation treatment with Tax rather than estimating it off the bank feed.

The cleaning fee: income and expense, kept apart

One STR-specific pattern deserves its own note, because collapsing it is so common. The cleaning fee you charge the guest is income; the cleaner you pay is an expense. They are two separate accounts, and you record both — you don't net them into a single line. Keeping them apart is what lets you answer a genuinely useful question: does the cleaning fee you charge actually cover what cleaning costs you? Netting them hides that gap; splitting them exposes it. (The same "don't net things that aren't the same thing" logic runs through the whole Record stage.)

Categorize here; deduct with Tax

Where a cost lands in your chart and whether it's deductible are two different decisions, owned by two different domains. Your job in the books is to record each cost in an account that reflects what it is — an operating expense, a financing cost, a liability reduction, an asset. What's ultimately deductible, over what period, and how it's reported on the applicable return is Tax's determination. A clean, well-categorized chart makes that hand-off a copy rather than a reconstruction — which is exactly why categorizing well pays off at tax time even though it isn't itself a tax decision. When a cost is ambiguous (is this a repair or an improvement? a supply or an asset?), record it consistently and flag it for your tax professional rather than guessing at the tax answer.

Your action plan

1. Give each material operating cost its own line — cleaning, supplies, repairs, utilities, insurance, property tax, platform fees, software — so reports show which cost moved.
2. Split the mortgage payment — interest (expense), principal (loan liability), and escrow activity — rather than booking the whole payment as an expense; reconcile the components to the lender statement.
3. Keep held money off the P&L — refundable deposits and collected taxes are liabilities; reserves are a balance-sheet transfer, not an expense.
4. Give durable items asset treatment — furniture, appliances, and equipment may need to be recorded as fixed assets rather than supplies; coordinate capitalization and depreciation with Tax.
5. Record the cleaning fee and the cleaning cost separately — income and expense, so you can see whether the fee covers the cost.
6. Flag the ambiguous ones for Tax — repair vs. improvement, supply vs. asset — record consistently and let your tax professional rule on deductibility.

The bottom line

Categorizing STR expenses is mostly easy — cleaning, supplies, utilities, insurance, and the rest are ordinary operating costs that each deserve their own line. The value is in the exceptions: loan principal, refundable deposits, collected taxes, reserve transfers, and durable assets look like expenses but aren't, and putting them on the P&L is how an otherwise-careful set of books ends up misleading. Record each cost as what it truly is — spent, held, set aside, paid down, or invested in an asset — split the bundled ones, keep the cleaning fee and cleaning cost apart, and leave the deductibility questions to Tax. Do that, and your reports mean something and your tax hand-off is a copy, not a rescue.

About the author

Matt Nunn is the founder of Builders Finance. He has spent two decades working with the financial side of real estate businesses, and started Builders Finance to give short-term-rental operators the financial systems, frameworks, and plain-language education that most hosting advice skips over. Builders Finance publishes educational content for STR owners; it is not legal or tax advice, entity and tax rules vary by state and situation, and it is not a substitute for guidance from your own attorney and qualified tax professional.

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Educational information only — not individualized tax, legal, or investment advice. The worked example is an illustrative model, not a projection or a recommendation.