Leave Your Minpaku Management to the Experts
Free Online ConsultationUnder Japan’s Minpaku Business Act (the “New Minpaku Law”), private lodging operations are capped at 180 days per year. If you don’t fully understand how this 180-day count actually works, it’s easy to go over the limit without realizing it—and that can lead to serious consequences, including administrative penalties or a full suspension of your business. This article walks through exactly how the 180 days are calculated, the most common misunderstandings among hosts, and what happens if you exceed the limit.
Plenty of hosts continue operating under mistaken assumptions—thinking that “days with no guests don’t count” or that “only the check-in date matters.” To run your property properly and stay within the 180-day cap, let’s start with the basics of how the calculation actually works.
The Basics of the 180-Day Calculation: What Counts as “One Day”?
Under the Minpaku Business Act, a “day” within the 180-day limit refers to a day on which the property was provided for guest accommodation—not simply the number of nights a guest happened to stay. In practical terms, every day from check-in through the night before check-out is counted, one day at a time. So for a 4-day/3-night booking, you don’t just count 3 days flat—it’s calculated based on the actual nights the property was used for lodging.
According to guidelines from the Ministry of Land, Infrastructure, Transport and Tourism (MLIT), the calculation is based on “nights the guest actually stayed.” Even if check-out happens the next morning, each night of actual occupancy counts as one day. For example, if a guest checks in Friday evening and checks out Sunday morning, that’s counted as 2 days—one for the Friday night stay and one for the Saturday night stay.
Prefectural Reporting Requirements and When the 180-Day Count Resets
The 180-day cap operates on an “annual” basis, but it’s essential to understand exactly which 12 months that refers to. Under the Minpaku Business Act, the counting period runs from April 1 to March 31 of the following year—not the calendar year (January to December). This means days used in March don’t carry over into the next fiscal year; the count resets to zero on April 1.
You also need to be aware of the mandatory reporting obligations to your prefectural government. Minpaku operators are required to report their number of lodging days and guests to the prefectural governor once every two months. This reported data is a key tool authorities use to monitor compliance with the day limit, and submitting false information carries severe penalties. Keeping accurate, day-by-day records yourself is a fundamental part of staying compliant.
Three Common Misunderstandings About the 180-Day Calculation
Misunderstanding #1: “Vacant Days” Without Guests Don’t Count
Many owners believe that “only the days a guest actually stayed should be counted”—and that’s actually correct. Days with no guests are not counted. That said, be careful to count every night from the guest’s arrival date through the night before departure—all of it counts toward the total. Vacant days aren’t included, but every night within a booked stay is added without exception.
What requires extra caution, though, is the case of “days with guests but no proper registration filed.” If authorities investigate, undocumented days may still be treated as violations. Operating without a filed registration or without proper records will draw much closer scrutiny from regulators. Maintaining daily lodging records is a legal obligation, so make sure your record-keeping has no gaps.
Misunderstanding #2: Multiple Rooms Mean 180 Days x Number of Rooms
Some owners mistakenly assume that if a property has multiple rooms, each room gets its own independent 180-day allowance. In fact, the Minpaku Business Act manages the day count on a per-property basis. If a property is registered as a single filed residence, the 180-day cap applies to that entire property as a whole—it is not multiplied by the number of rooms.
However, if separate parts of a building (for example, individual units within an apartment building) are each registered under their own separate filing numbers, then each filing is subject to its own independent 180-day limit. It’s entirely possible for a single owner to hold multiple filing numbers, but each property or unit must be filed, managed, and reported completely independently. Whether or not a property can be split into separate filings depends on factors like the independence of facilities and the judgment of local authorities, so it’s best to confirm with your prefecture in advance.
Misunderstanding #3: Local Ordinance Limits and the National 180-Day Cap Are Counted Separately
On top of the national 180-day limit under the Minpaku Business Act, many municipalities impose their own additional restrictions through local ordinances—for instance, “no operation Monday through Friday” or “operation permitted only during certain periods.” Some owners mistakenly believe that the national 180-day limit and local ordinance restrictions are calculated independently of each other. In reality, the 180-day annual cap is applied within whatever operating window the local ordinance allows—not in addition to it.
In other words, in municipalities where the total number of days permitted under local ordinance is already less than 180, your effective operating limit is lower than 180 days. Always check the specific ordinance in the municipality where your property is located, determine the actual maximum number of operating days available to you, and build your business plan around that real number.
What to Do as You Approach the Limit, and How to Track Your Day Count
As you get closer to the 180-day annual cap, you need to work backward and plan exactly when to stop accepting new bookings. For example, if you only have 20 days of allowance left before the end of the fiscal year (March 31), accepting bookings beyond that creates real risk of exceeding the limit. Make full use of your OTA booking calendars and manage your acceptance of new reservations with your remaining day count firmly in mind. Platforms like Airbnb and Booking.com let you block off specific dates, so it’s worth setting those blocks early.
For day-count tracking, a dedicated log or spreadsheet is a practical solution. Record the stay dates, number of guests, and number of lodging days for every booking so you always know your running total. If you’re using property management software (PMS), take advantage of its day-count aggregation features to improve accuracy. By planning your occupancy strategically throughout the year, you can maximize revenue while staying fully compliant.
Violation Risks and Administrative Penalties for Exceeding the 180-Day Limit
Under Article 17 of the Minpaku Business Act, operating a property beyond the 180-day annual limit makes you subject to a business improvement order. If the violation is deemed serious, penalties can escalate further—including revocation of your registration or a full business suspension order. First-time minor violations may only result in guidance or a warning, but repeated overages or discovery of false reporting will bring much harsher penalties.
If your registration is revoked, reapplying or obtaining new permits takes considerable time and effort. In some municipalities, the fact that you’ve been penalized is made public, which directly damages your credibility as a host. Your OTA accounts can also be suspended in such cases, putting all the reviews and reputation you’ve built at risk of being lost entirely. Exceeding the 180-day limit can end up costing you far more than any short-term revenue gain—which is exactly why strict day-count management is essential.
An Alternative: Avoiding the 180-Day Limit by Obtaining a Hotel Business License
Rather than filing under the Minpaku Business Act, you can instead obtain a “simple lodging” (簡易宿所) license under the Hotel Business Act—and the 180-day annual limit simply doesn’t apply. Properties licensed under the Hotel Business Act can operate 365 days a year. For owners looking to maximize occupancy and revenue, operating under the Hotel Business Act can be a very realistic option.
That said, obtaining a Hotel Business Act license requires meeting far stricter standards than a Minpaku Business Act filing. There are numerous requirements to clear—front desk staffing (with some conditional exemptions), fire safety equipment, and compliance with building code use-change requirements—all of which increase your initial investment. The application process is also complex, often starting with a preliminary consultation at your local health center and taking several months to complete. If you’re considering switching to a Hotel Business Act license, consulting with a specialist or property management company can help you streamline preparation and optimize costs.
Need Help Managing Your Minpaku Day Count? Talk to Stay Buddy
Stay Buddy Co., Ltd., a full-service minpaku property management company, provides one-stop support for everything from 180-day tracking to reservation management, cleaning, and report filing. We regularly hear from owners who tell us “I’ve lost track of how many days I’ve used” or “the local ordinance rules and national limit are so complicated I don’t know how to manage them”—and thanks to our hands-on experience, we can offer concrete, practical advice.
We also support owners who are currently operating under the Minpaku Business Act but approaching their day-count ceiling, as well as those considering a switch to a Hotel Business Act license. We’ll propose the optimal operating approach tailored to your property’s location, size, and revenue goals—so please don’t hesitate to reach out.
Your first consultation is completely free. We also offer online consultations, so we’re able to assist owners anywhere in Japan. Let’s work together with Stay Buddy to build an operating structure that stays fully compliant with the 180-day limit while maximizing your revenue. We look forward to hearing from you through the official Stay Buddy Co., Ltd. website.
