Minpaku’s 180-Day Rule Explained: How to Count the Days Correctly and the Penalties for Exceeding the Limit

民泊180日制限の正確な日数カウント方法と、超過した場合に問われる罰則内容

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How the Minpaku 180-Day Limit Is Calculated—and the Penalties You Face If You Go Over: Misunderstandings and Realities We’ve Seen in the Field

Surprisingly few minpaku owners truly understand how the 180-day limit is calculated and what penalties apply if it’s breached. Under the Private Lodging Business Act (the “Minpaku Act”), licensed properties are capped at 180 operating days per year. Yet time and again, Stay Buddy has encountered operators running their properties without a clear grasp of what actually counts as “one day” or what consequences await if they go over the limit. In this article, we’ll walk through the correct way to count days and lay out exactly what penalties apply when the limit is exceeded or violated.

The Legal Basis and Assumptions Behind the “180-Day” Rule

Article 13 of the Private Lodging Business Act clearly states that a licensed host may offer lodging for “no more than 180 days per year.” The “year” in question isn’t the calendar year (January 1 to December 31)—it’s a business year defined for each registered property. Under the Japan Tourism Agency’s operational guidelines, this period runs from April 1 to March 31 of the following year.

Just as important: local municipalities can further shorten this cap through their own ordinances. Under Article 18 of the Act, some municipalities—particularly in exclusively residential zones—limit annual operating days to as few as 60 or 90. The 180-day figure is simply the upper limit set by national law; depending on where your property is located, the actual cap could be considerably lower. Before you start operating, always check with your local municipal office or prefectural government to confirm the applicable limit.

Getting the Count Right: What Actually Counts as a “Night of Lodging”

The single biggest source of confusion is how to count a one-night, two-day stay. According to the official registration forms and Japan Tourism Agency guidance, a “day of lodging” refers to each day a guest actually stays at the property, counted from the check-in date (the start of the stay). A one-night, two-day stay counts as “one day.” A three-night, four-day stay counts as “three days.” The checkout date itself is not counted.

In practice, the trickiest situations arise when bookings overlap or when multiple guests check in and out on the same calendar day. If one guest checks out and another checks in on the same day, that day still only counts as “one day”—not two. Miscounting this as two days will throw off your running total of remaining days.

The Connection to Mandatory Reporting Under the Minpaku Act

Article 14 of the Private Lodging Business Act requires operators to submit periodic reports to the prefectural governor. These reports include the number of days the property was used for lodging, and the figures must align with what was originally registered. If your reported numbers don’t match reality, that discrepancy alone can trigger administrative guidance or a corrective order. That’s why, in the field, we make it standard practice to maintain our own independent ledger or management system alongside platform booking records—never relying on booking-platform data alone.

What Penalties Apply If You Exceed 180 Days

Sanctions under the Private Lodging Business Act come in two tiers: administrative action and criminal penalties.

Administrative Action: Business Improvement Orders and Suspension Orders

Under Article 16 of the Act, prefectural governors can issue a business improvement order to operators found in violation of the law. If an overage beyond 180 days is confirmed, the typical first step is guidance or an order demanding corrective action. If the operator fails to comply, or if the violation is deemed particularly serious, a business suspension order can be issued under Article 17. Once a suspension order is issued, the property can no longer legally operate as a private lodging business.

Criminal Penalties: Fines and Imprisonment

If an operator continues running the business in defiance of a suspension order, or operates without having registered at all, criminal penalties under Articles 52 and 53 of the Act come into play: fines of up to ¥1 million, imprisonment of up to six months, or both. In other words, exceeding the day limit itself isn’t usually what triggers criminal liability directly—it’s the failure to comply with an administrative order that crosses into criminal territory. That said, as regulatory oversight continues to tighten, treating an initial overage lightly is a genuinely risky bet.

Where Owners Get Confused: The Difference from the Hotel Business Act

Some owners mistakenly believe that simply filing a registration is all that’s required. Properties that instead obtain a business license under the Hotel Business Act (Act No. 138 of 1948) are exempt from the 180-day cap—but in exchange, they face stricter structural and facility requirements, including fire-prevention equipment standards under the Fire Service Act (Act No. 186 of 1948). Registration under the Private Lodging Business Act and licensing under the Hotel Business Act are entirely separate systems. If a property registered under the Minpaku Act operates beyond 180 days without switching frameworks, it risks being found in violation of the Hotel Business Act as well.

A Real Case: Miscounted Remaining Days in the Field

At one property Stay Buddy took over management of, we discovered that during the previous period of self-management, the remaining-day calculation had drifted by roughly two weeks. The cause: for multi-night bookings, the previous operator had counted every night of the stay instead of counting only the check-in day. In this case, the property hadn’t actually exceeded 180 days—but because the internal ledger made it look like it had, the owner had been voluntarily turning away bookings that could have been accepted. Translated into lost occupancy, that kind of error can add up to a meaningful sum depending on the season.

The opposite scenario also happens in the industry: operators undercounting their days and unknowingly exceeding 180 days without realizing it. Both types of errors can be prevented by making daily logging and monthly reconciliation a standard habit. Relying solely on booking counts from a management tool isn’t enough—your whole operating team needs to share a common, precise understanding of what counts as a “day of lodging.”

Free Consultation and Inquiries with Stay Buddy Co., Ltd.

Managing the 180-day limit well comes down to two things working together: a precise understanding of the definitions, and disciplined, ongoing record-keeping. This matters especially at the moment you transition from self-management to a management company, or if you’re running multiple properties simultaneously—we strongly recommend verifying your remaining-day tally for consistency right at the point of handover. At Stay Buddy, we always reconcile past lodging records against registration details during the first month of any handover.

We offer end-to-end support—from registration requirements under the Private Lodging Business Act, to day-count management, to cleaning and guest services. Whether your question is “I’m not sure exactly how many days we’ve used so far” or “I want to confirm whether our local ordinance sets a cap lower than 180 days,” our on-site team will answer directly.

Just let us know your property’s location and current registration status, and we’ll provide a free initial consultation to review your situation. We’re happy to help whether you’re just getting started or already up and running. Feel free to reach out via our contact form or by phone.

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