STR Break-Even Occupancy: How Many Nights Do You Actually Need?

Most hosts look at occupancy as a vanity metric. Booked 22 of 30 nights — 73%, looks healthy, post the screenshot. The question that actually matters is the gap between your booked occupancy and your break-even occupancy. If you are at 73% and your break-even is 71%, you are running a 2-percentage-point margin business, not a 73-percent business.

Here is how to calculate break-even occupancy honestly, and how to use it to decide whether to hold, raise rates, or sell.

Break-even occupancy formula

Break-even occupancy = Total monthly fixed cost
                      ÷ (Net revenue per night booked × Days in month)

Where:

• Total monthly fixed cost = mortgage P&I + property tax + insurance + HOA + base utilities + recurring software/listing fees + reserves.
• Net revenue per night booked = ADR − host fee − cleaning paid (per night) − variable supplies (per night) − lodging tax (if not pass-through).

The break-even calculator does this in real time once you enter the inputs.

Worked example — a Smoky Mountains 2BR cabin

Inputs:

• ADR: $245
• Host fee: 3% (standard split) = $7.35/night
• Cleaning paid per turnover: $140; average stay length 3.2 nights → $43.75/night
• Variable supplies: $8/night
• Lodging tax: pass-through (Airbnb collects in TN)
• Net revenue per night: $245 − $7.35 − $43.75 − $8 = $185.90

Fixed monthly costs:

• Mortgage P&I: $1,820
• Property tax: $190/mo
• Insurance (STR-rated): $310/mo
• Internet + streaming: $95/mo
• Software (PMS, lock, dynamic pricing): $80/mo
• Repairs reserve: $200/mo
• Capex reserve (1.5% of $410k value/yr ÷ 12): $513/mo
• Total: $3,208/mo

Break-even occupancy = $3,208 ÷ ($185.90 × 30) = $3,208 ÷ $5,577 = 57.5%

If actual booking pace runs 71%, this property has a 13.5-pp cushion. That is a real business.

Worked example — a downtown Austin condo

Same exercise, different unit economics:

• ADR: $215
• Host fee: 14% (host-only split, common in metro condos) = $30.10/night
• Cleaning paid per turnover: $135; average stay length 2.4 nights → $56.25/night
• Variable supplies: $9/night
• Lodging tax: hotel occupancy + Austin city tax — partially platform-collected; assume $4/night net leak
• Net revenue per night: $215 − $30.10 − $56.25 − $9 − $4 = $115.65

Fixed monthly costs:

• Mortgage P&I: $2,940
• HOA: $580
• Property tax + insurance: $720
• Reserves + supplies + ops software: $410
• Total: $4,650/mo

Break-even occupancy = $4,650 ÷ ($115.65 × 30) = $4,650 ÷ $3,469 = 134%

You read that correctly. There is no number of nights this listing can be booked at this ADR that makes it cash-flow positive. Either ADR has to rise (impossible if comp set is at $215), the host fee structure has to change (typically not optional in metro condos), the mortgage has to disappear (refinance, paydown, or sale), or the property has to convert to mid-term/long-term.

The owner of this Austin condo has a problem the booking calendar can’t fix. That is what break-even analysis tells you that occupancy alone never will.

Why market-average occupancy is the wrong benchmark

A common mistake: a host sees “Smoky Mountains average occupancy 64%” in an AirDNA report and assumes 64% is “fine.” It might be — for a property with 50% break-even. It is a death sentence for one with 75% break-even.

Market average tells you about demand. Break-even occupancy tells you about your specific property’s relationship to that demand. The gap is the business.

Three levers to lower break-even

If your break-even is uncomfortable:

1. Raise net revenue per night — usually via dynamic pricing. A $20 ADR increase on the Smokies cabin example above lowers break-even from 57.5% to 51.5%. Six percentage points of cushion in a single change.

2. Lower fixed costs — refinance, drop subscription software, renegotiate insurance. Property tax is rarely negotiable; everything else is.

3. Lower the host fee burden — for metro condos especially, switching from host-only to standard split can move 10+ percentage points of net revenue, but most condo associations or building rules dictate the structure.

Break-even and the comp-buying decision

If you are considering buying an STR, run break-even before you write the offer. The math is the same; you just substitute estimated ADR and projected fixed costs. strbuyers.tools has the comp-side analysis (DSCR, market score) — pair it with this break-even number to know whether the deal works on day one.

A property whose pro-forma break-even occupancy is above the 75th percentile of its market’s actual occupancy distribution is a property where the math only works if you are an above-average operator. Plenty of hosts win that bet. Most don’t.

How break-even relates to RevPAR

RevPAR (revenue per available night, including unbooked nights) is what hotels use; it folds occupancy and ADR into one number. Break-even occupancy folds your cost structure into the same picture.

The relationship:

Required RevPAR = Break-even occupancy × ADR

If your break-even is 60% and your ADR is $200, your required RevPAR is $120. If your actual RevPAR is $145, you have a $25/night cushion before fixed costs eat you.

Putting it together

Break-even occupancy is one of the four numbers every STR host should know cold:

1. ADR — what you charge.
2. Occupancy — what fraction of nights you sell.
3. Break-even occupancy — what fraction you must sell.
4. Net profit margin — what survives below the line.

Tools across the cluster:

• profit-calculator — full P&L
• break-even-calculator — this number
• revpar-calculator — the hotel-grade view
• Operations workflow — turnover, dispatch, smart-lock automation
• Guest experience — house rules and welcome books that protect reviews
• The STR Ledger — the workbooks that track all four numbers month over month

FAQ

What’s a “good” break-even occupancy? Below 55% is excellent. 55–65% is healthy. 65–75% means you need consistent above-market operations. Above 75% means you are paying yourself to be a property manager.

Does break-even include my time? Not in the formula above — that is cash break-even. If you want true break-even, add a labor line for your hours at a market rate. Many “profitable” STRs are unprofitable once owner labor is priced in.

How often should I recalculate? Once a quarter, plus any time a major fixed cost changes (refinance, insurance renewal, HOA increase, tax reassessment).

What about seasonality? Break-even is a monthly average. If your market has a 3-month peak and 9-month off-season, calculate break-even for the off-season alone. If the property doesn’t survive the off-season on its own, you are betting the whole year on three months of weather and demand.