Should You Discount or Stay Empty? How to Calculate Your Floor Rate in Japan STR

Running a short-term rental in Japan teaches you a lot of lessons the hard way. One of the most expensive: believing an empty night costs nothing.

It doesn’t. Every night your property sits vacant, fixed costs keep running. Once you calculate what those actually add up to per night, the whole “should I discount or hold out?” question becomes a lot less emotional — and a lot more mathematical.

TL;DR

• Every empty night has a real cost — the fixed expenses that run regardless of occupancy.
• Your floor rate is the minimum per-night payout that fully covers fixed costs plus variable costs (cleaning, OTA commission).
• In our experience, many Japan STR operators set minimums by feel, not calculation — and they either over-discount or under-fill.
• Cleaning fees complicate the math: they shift the floor rate differently for 1-night vs 3-night stays.
• Running this calculation once per property gives you a clear line below which a booking no longer covers its allocated costs.

Why Is an Empty Night Not Free?

An empty night still costs you money because your fixed expenses don’t pause when no guest shows up. Mortgage or rent, property insurance, platform subscription fees (Guesty, Airhost, etc.), internet, basic utilities on standby — these run every single day of the year whether your occupancy is 0% or 100%.

When you choose to leave a night empty rather than accepting a discounted booking, you are not avoiding a cost. You are paying your fixed costs with zero revenue to offset them. The question isn’t “is an empty night free?” — it’s “is the discount I’m being asked to accept better or worse than zero?”

How Do You Calculate Your Fixed Cost Per Night?

Start by listing every expense that doesn’t change based on whether you have a guest.

For a typical Tokyo guesthouse room, fixed monthly costs might look like this:

Divide by 30 days: ¥3,250 per night in fixed costs.

That’s your baseline. Every empty night is a ¥3,250 hole in your P&L. A booking at ¥4,000 net is not a great deal, but it’s still ¥750 better than nothing.

What Is Your Floor Rate?

Your floor rate — the minimum net payout that fully covers your allocated fixed and variable costs — is:

Floor rate = Fixed cost per night + Variable cost per booking ÷ stay length

Variable costs are the expenses that only happen when a guest stays: cleaning, linen laundry, toiletries, and so on. If your per-turnover cost is ¥3,000, and a guest is staying 3 nights, that’s ¥1,000/night in variable costs.

• For a 3-night stay: Floor rate = ¥3,250 + ¥1,000 = ¥4,250/night net
• For a 1-night stay: Floor rate = ¥3,250 + ¥3,000 = ¥6,250/night net

This is why experienced operators don’t obsess over a single minimum rate — they use different minimums for different stay lengths. That’s not arbitrary: the math actually points there.

How Does OTA Commission Change This?

When you list on Airbnb or Booking.com, you pay a commission. Airbnb host fees are commonly 3% under the split-fee model, while Airbnb’s single-fee model is mostly 15.5% and otherwise typically 14–16%. Booking.com commission is property- and agreement-specific; check the Agreement step or your Extranet for your actual rate. The 15% figure used in the examples below is illustrative.

To convert your floor rate from net payout to listed price:

Minimum listing price = Floor rate ÷ (1 − commission rate)

At 15% commission:

• 3-night minimum: ¥4,250 ÷ 0.85 = ¥5,000/night listed
• 1-night minimum: ¥6,250 ÷ 0.85 = ¥7,353/night listed

If your dynamic pricing tool (or manual rate) drops below these numbers, the booking does not fully cover your allocated costs. For advance bookings where there is still time to fill the date at a better rate, holding out is rational.

What About Cleaning Fees?

Cleaning fees complicate things in an interesting way. If you charge a flat ¥3,000 cleaning fee regardless of stay length, that fee already covers your per-turnover variable cost. In that case, your floor rate drops to just the fixed cost per night: ¥3,250 net, or roughly ¥3,825 listed at 15% commission.

But not all platforms surface cleaning fees cleanly, and guests compare total price, not nightly rate. A ¥1,500/night listing with a ¥5,000 cleaning fee looks bad for a 2-night stay. There’s a real tension between the math (cleaning fee = better floor rate coverage) and the optics (cleaning fee = lower conversion on short stays).

At BenStay, our approach is to set the cleaning fee to cover about 80% of actual turnover cost, then price the nightly rate assuming the remaining 20% is variable. This keeps us competitive on 2–3 night stays without destroying margin on 1-night bookings.

When Should You Discount, and When Should You Hold?

With a floor rate in hand, the logic is simple.

• Discount offered is above floor rate → accept if timing makes sense. A late-filling night or an awkward gap between bookings is exactly the situation to discount into.
• Discount would take you below floor rate → the booking does not fully cover allocated costs. For dates that could still fill at a better rate, holding out is rational. For last-minute dates that would otherwise stay empty, compare the payout against your unrecovered variable cost and displacement risk — the full floor rate is not the right threshold in that case.
• Gaps between bookings: Empty gaps of 1–2 nights between longer reservations are the classic case for last-minute discounts. Fixed costs are running regardless — any net revenue above your unrecovered variable cost is recovery.

Where operators go wrong is setting minimums emotionally (“I won’t go below ¥8,000 because this room is worth it”) rather than mathematically. Your room might be worth ¥8,000 in peak season. But if it’s a Tuesday in February and your fixed cost per night is ¥3,250, refusing a ¥5,000 booking is costing you ¥1,750 in real money — not protecting your brand.

A Worked Example

Property: 1-bedroom apartment in Shinjuku Fixed monthly costs: ¥120,000 (¥4,000/night) Turnover cost: ¥4,000 per stay Cleaning fee charged to guests: ¥3,000 OTA commission: 15% (illustrative)

Net variable cost not covered by cleaning fee: ¥1,000 per stay

These are floors, not targets. Your market rate is still driven by demand, competition, and season. Below these numbers, the booking does not fully cover allocated fixed costs. For last-minute dates that would otherwise be empty, compare the payout with your unrecovered variable cost and displacement risk rather than treating the floor rate as an absolute cutoff.

FAQ

Q: Should I factor in my own labour time when calculating the floor rate?

If you manage the property yourself — guest communication, inspections, key handover — your time has a real cost. Some operators assign a notional hourly rate of ¥2,000–3,000 and factor in roughly 30–45 minutes per booking. If your time is genuinely constrained, this can raise the floor rate meaningfully and is a solid argument for longer minimum stays.

Q: Does this calculation change if I use a property management company?

Yes, significantly. If a management company charges 15–25% of gross revenue, model it as an additional percentage deduction — usually alongside OTA commission unless your contract says otherwise. Your minimum listing price becomes: breakeven net cost ÷ (1 − OTA commission − management commission). Treat only fixed monthly retainers as fixed costs. Because both commission layers shrink every payout, managed-property floor rates on listed prices tend to run higher — one reason owner-operators can undercut PMS-managed properties on price without necessarily running better properties.

Q: What if I’m subject to the 180-night minpaku cap?

For minpaku-notified homes, the national cap is 180 lodging days per notified dwelling in the annual period from April 1 noon to the following April 1 noon; one overnight stay is counted as one day. Local ordinances may further restrict operating periods. This means your fixed costs are spread over at most 180 potential revenue nights rather than 365, roughly doubling your per-night fixed cost and raising your floor rate accordingly. Some cap-constrained operators underestimate this and underprice during their allowable hosting window — running the numbers makes the true minimum much clearer.

This post is for informational purposes only and does not constitute legal or tax advice. Please consult a qualified professional for your specific situation.