In real estate investment and sale, accurate understanding of depreciation and statutory useful life is essential knowledge for maximizing tax reduction effects. This article practically explains from the 3 ways of thinking about useful life to the calculation formulas for both when useful life has been exceeded and when it hasn't.
What Is Real Estate "Useful Life"? 3 Ways of Thinking
Real estate useful life comes in 3 types. In investment and taxation, statutory useful life is mainly used.
Physical Useful Life
Physical useful life is the number of years until a building becomes unusable due to deterioration. It refers to the period the structural mechanism and material quality can be sustained, close to the concept used for TVs and home appliances, with limited application to real estate.
Statutory Useful Life
Statutory useful life is the baseline number of years set by the national government under tax law to fairly calculate real estate value. There are no use restrictions even after exceeding this number, and it is used for fixed asset tax calculation and depreciation calculation. It is the most important indicator in real estate practice.
Economic Useful Life
Economic useful life is the period expected to generate profit from an income-producing property. It varies depending on location, usage conditions, and maintenance status, and is sometimes shorter than statutory useful life in properties with poor demand.
Statutory Useful Life by Structure Type
| Structure | Statutory Useful Life |
|---|---|
| RC (Reinforced Concrete) | 47 years |
| Light steel frame (3mm or less) | 19 years |
| Light steel frame (3-4mm) | 27 years |
| Wood frame | 22 years |
Depreciation Calculation Method: When Useful Life Not Exceeded
Use the straight-line method: Acquisition cost × Depreciation rate. The depreciation rate is determined by the statutory useful life (e.g., 47 years → 0.022).
Depreciation Calculation Method: When Useful Life Exceeded
When statutory useful life is exceeded, a separately determined formula is used: Statutory useful life × 0.2. This is the "residual useful life" and becomes the basis for depreciation calculation.
Depreciation Points for Used Property Purchase
When purchasing a used property with remaining statutory useful life, the remaining useful life is the basis. For properties with exceeded useful life, statutory useful life × 0.2 is used. Used properties often have shorter useful life, enabling larger annual depreciation expenses and greater tax benefits.
FAQ
- Q. Is depreciation possible for land?
- A. Land cannot be depreciated. Only buildings are subject to depreciation.
- Q. When does the depreciation period start?
- A. Depreciation starts from the year the property is placed in service (the year it starts being used as rental property).
- Q. What is the depreciation amount for a used RC condo with an exceeded useful life purchased for 30 million yen?
- A. 47 years × 0.2 = 9.4 → rounded down to 9 years. If the building portion is 20 million yen, annual depreciation = 20 million × 0.112 = approximately 2.24 million yen.
- Q. Does useful life end when statutory useful life is reached?
- A. The building's physical life does not end. Statutory useful life is for tax purposes only, and the building can continue to be used.
