Learn exactly how Japan calculates property tax assessment values for land and buildings, what reductions apply, the 3-year reassessment cycle, and how foreign property owners are taxed.

How Japan Property Tax Assessment Values Are Calculated

Understanding how Japan calculates property tax assessment values is one of the most important—and least explained—aspects of owning real estate in Japan. Unlike many countries where property taxes are based on purchase price or current market value, Japan uses an independently assessed value that is typically far below what you paid. This gap between market price and assessed value can mean significant tax savings, but also surprises if you don't understand the system.

This guide explains the full mechanics: how land and building values are assessed separately, what reductions apply, how often values are recalculated, and what this means for your annual tax bill as a foreign property owner in Japan.

The Core Tax Formula: Land and Building Assessed Separately

Japan's primary recurring property tax is called Fixed Asset Tax (固定資産税, koteishisan-zei). The annual tax is calculated using a simple formula:

Annual Tax = (Assessed Land Value + Assessed Building Value) × Tax Rate

The standard Fixed Asset Tax rate is 1.4%. In areas designated as urbanization promotion zones, an additional City Planning Tax (都市計画税, toshi-keikaku-zei) of up to 0.3% applies. Combined, the maximum rate is 1.7%.

What makes Japan's system unique is that the assessed value used in this formula is not your purchase price and not current market value. It is a figure set independently by the municipal government based on national standards—and it is almost always considerably lower than what a buyer would pay on the open market.

Tax Type	Rate	Applies To
Fixed Asset Tax (固定資産税)	1.4%	All taxable properties nationwide
City Planning Tax (都市計画税)	Up to 0.3%	Urbanization promotion areas only
Combined Maximum	1.7%	Urban properties in planning zones

For a deeper overview of all ongoing ownership costs, see our guide to Property Taxes and Annual Costs of Owning Property in Japan.

How Land Assessment Value Is Determined

Land is assessed based on a standard published annually by the national government: the Official Land Price (公示地価, kojichika). This price is published each spring and represents benchmark transaction values for reference points across Japan.

Municipal governments then set the assessed land value (課税標準額, kazei-hyoujungaku) at approximately 70% of the official land price. This 70% figure is a nationally mandated cap designed to prevent assessed values from exceeding market reality.

The chain works like this:

Market Transaction Price → Official Land Price → ×70% = Assessed Land Value

In practice, this means:

In resort areas like Niseko (Hokkaido), where foreign demand has driven up actual prices dramatically, assessed land values may be 50% or more below the real purchase price
In established urban neighborhoods, the gap may be smaller but still significant
In rural areas with declining populations, official land prices (and thus assessed values) may be very low

Practical example: If you buy a rural plot for ¥5,000,000 but the official land price values it at ¥2,000,000, the assessed land value is approximately ¥1,400,000—and that is the figure your annual tax is based on.

For foreign buyers considering rural or countryside property, understanding this discount is essential. Read more in our guide to Rural and Countryside Properties in Japan for Foreigners.

How Building Assessment Value Is Determined

Buildings are assessed entirely separately from land, using a depreciated replacement cost method:

Reconstruction cost: How much would it cost to build an identical structure today, in the same location?
Depreciation: How much value has the building lost due to age and wear since it was built?

Assessed Building Value = Reconstruction Cost − Accumulated Depreciation

Factors the municipality considers include:

Building structure (wood, reinforced concrete, steel-frame)
Construction materials and finishes
Floor area
Location of the property
Year of construction
Current physical condition

The depreciation component is significant. Older Japanese wooden structures (mokuzou) depreciate quickly. Buildings that are 30–40+ years old may have an assessed building value near zero. This is why purchasing an older akiya (vacant house) often comes with very low annual property taxes—the building itself contributes almost nothing to the tax bill.

Practical example: A 40-year-old wooden house may be assessed at ¥0 for the building component, meaning you only pay tax on the land.

For buyers considering older properties, see our overview of Types of Properties Available in Japan.

The 3-Year Reassessment Cycle

Japan does not reassess property values every year. Instead, municipalities recalculate assessed values on a 3-year cycle, using nationally standardized methods published by the Ministry of Internal Affairs and Communications.

The most recent major reassessment year was 2024
The next scheduled reassessment is 2027
Between reassessment years, values remain fixed (with limited exceptions for major renovations, demolitions, or disasters)

This means if you buy a property between reassessment years, your tax is based on the previous cycle's values until the next reassessment. In rising markets (like parts of Tokyo or Niseko), this can mean your assessed value is lower than current market conditions would suggest.

Important note for akiya buyers: If you demolish an old building on the land before reassessment, the municipal government will not wait until the 3-year cycle—they will immediately remove the residential land discount (explained in the next section), and your land tax can multiply sharply.

The Most Important Discount: Residential Land Reductions

The single most impactful feature of Japan's property tax system is the residential land area reduction. When a residential building stands on the land, a large reduction is applied to the taxable land value:

Land Category	Qualifying Area	Fixed Asset Tax Reduction	City Planning Tax Reduction
Small residential land (小規模住宅用地)	First 200 m²	Reduced to 1/6 of assessed value	Reduced to 1/3
General residential land (一般住宅用地)	Portion over 200 m²	Reduced to 1/3	Reduced to 2/3

What this means in practice: For a 200 m² residential plot, instead of paying 1.4% on the full assessed land value, you pay 1.4% on just 1/6 of that value. The effective land tax rate becomes just 0.23%.

This is the largest single tax break in the system—and it is easily lost. The discount is revoked if:

The residential building is demolished (even temporarily)
The property is officially designated a "Special Vacant House" (特定空き家, tokutei-akiya) under the 2015 Vacant House Special Measures Act
The land use changes to non-residential

The akiya trap: Many buyers plan to demolish an old structure to build new. During the period between demolition and new construction completion, the land loses the 1/6 reduction, and annual land tax can jump by 5–6x. Plan your demolition and construction timeline carefully to minimize this window.

For more on the costs involved in buying property, see our guide to Hidden Costs and Fees When Buying Property in Japan.

New Construction Building Tax Reductions

Newly built residential properties receive a temporary building tax discount:

Property Type	Reduction	Duration
Standard new residential building	50% reduction on building tax	First 3 years
Fire-resistant apartment / condo building	50% reduction on building tax	First 5 years

This 50% discount applies to the floor area used for residential purposes, up to 120 m². For larger homes, the portion above 120 m² is taxed at the standard rate from year one.

After the discount period ends, expect a notable increase in annual taxes—budget for this in advance, especially if you are financing the purchase with a mortgage.

Tax-Free Minimums

Small assessed values below certain thresholds are fully exempt from Fixed Asset Tax:

Land: Assessed value below ¥300,000 → no tax
Buildings: Assessed value below ¥200,000 → no tax
Depreciable business assets: Below ¥1,500,000 → no tax

This exemption is particularly relevant for very old rural properties where both land and building values may be minimal—meaning some akiya homes have essentially zero ongoing property tax.

Practical Tax Calculation Examples

Property Type	Assessed Land Value	Assessed Building Value	Land Reduction	Annual Fixed Asset Tax (1.4%)
Small rural akiya (old wooden, 200 m² plot)	¥1,000,000	¥0 (fully depreciated)	1/6 = ¥166,667 taxable	~¥2,333/year
Mid-size countryside house (200 m² plot)	¥3,000,000	¥500,000	1/6 = ¥500,000 + ¥500,000	~¥14,000/year
Urban condo in Tokyo (60 m² unit)	¥8,000,000 (land share)	¥6,000,000	1/6 = ¥1,333,333 + ¥6,000,000	~¥103,000/year
New suburban house (200 m² plot, new build)	¥5,000,000	¥8,000,000	1/6 + 50% building discount	~¥80,000/year (first 3 yrs)

Note: City Planning Tax adds up to 0.3% on top of these figures in urban areas.

How Foreign Owners Are Taxed

Japan's property tax applies equally to all property owners regardless of nationality. There is no surcharge or different rate for foreign buyers.

However, non-resident foreign owners face one specific administrative requirement: you must designate a Tax Agent (納税管理人, nōzei kanrinin) who is based in Japan to receive tax notices and make payments on your behalf. This can be:

A trusted friend or family member resident in Japan
A property management company
A legal or accounting professional

Tax notices (納税通知書, nōzei-tsūchisho) are sent once per year, typically in April or May, by the municipal government where the property is located. The bill covers the full year and can be paid in 4 installments, with deadlines typically in June, September, December, and February (exact dates vary by municipality).

Late payment penalties:

Under 1 month late: 2.4% surcharge
Over 1 month late: 8.7% surcharge
Penalties under ¥1,000 are waived

For a full overview of the buying process and ongoing ownership requirements, visit Living in Nihon's guide for foreigners in Japan and Gaijin Buy House for practical buyer perspectives.

How to Find Your Property's Assessed Value

After purchase, you will receive the official assessed value certificate (固定資産評価証明書, koteishisan hyōka shōmeisho) from the municipal government. You can also:

Request a copy from the municipal tax office (役所, yakusho) in the city/town where the property is located
Check the tax notice sent each spring—it breaks down the assessed value of land and building separately
Review the fixed asset ledger (固定資産課税台帳, koteishisan kazei daichō)—property owners have the right to inspect this

Foreign buyers using a real estate agent should ask for the most recent assessed value certificate as part of due diligence. For more on the documentation involved, see our guide to Legal Procedures and Documentation for Japan Property Purchase.

For working professionals in Japan looking to understand the full tax picture, For Work in Japan offers additional context on financial obligations for foreign residents.

Summary: Key Points to Remember

Japan property taxes are based on assessed value, not purchase price or market value
Land is assessed at approximately 70% of the official land price—already below market
Residential land under 200 m² gets a further 1/6 reduction—the most important discount in the system
Buildings depreciate over time; old structures may have near-zero assessed building value
Assessed values are recalculated every 3 years (next: 2027)
Demolishing a building triggers immediate loss of the 1/6 land discount—plan accordingly
Foreign non-resident owners must appoint a tax agent to receive notices
Annual taxes are paid in 4 installments; late payment incurs surcharges

Understanding assessment values before you buy is essential to accurate budgeting. The gap between what you pay and what you are taxed on is one of Japan's most buyer-friendly features—provided you protect the residential land discount by maintaining a building on the land.

For a full picture of ongoing costs, read our Complete Guide to Buying Property in Japan as a Foreigner and the detailed breakdown of Property Taxes and Annual Costs of Owning Property in Japan.

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