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A Complete Guide to Filing Real Estate Income Tax Returns: Calculation Methods, Required Documents, and Business-Scale Criteria

A thorough guide to filing tax returns when you have real estate income. Summarizes the tax knowledge investors need, including income calculation, required documents, and criteria for determining whether activities qualify as a business scale.

Last updated: About 1 min read

If you earn rental income through real estate investing, filing a tax return is mandatory. Even if you are a salaried employee, you must file your own return when you have real estate income. This article provides a structured explanation of the knowledge required for filing a tax return on real estate income.

What Is Real Estate Income?

Real estate income refers to the profit earned by renting out property you own. This includes income from leasing apartments, condominiums, parking lots, and similar assets. The calculation formula is "gross income - necessary expenses."

Profits earned from selling real estate, on the other hand, are classified as capital gains income and are not included in real estate income.

Why Is Filing a Tax Return Necessary?

Real estate income is subject to comprehensive taxation and is combined with employment income to determine your income tax. If you fail to file a tax return, it may be regarded as "tax evasion," which can result in late-payment tax and serious penalties.

Documents Required for Filing a Tax Return

  • Tax return form B
  • Withholding tax slip
  • Real estate purchase agreement and lease agreement
  • Rent remittance statement
  • Loan repayment schedule
  • Receipts for repair expenses
  • Receipts for management fees
  • Fixed asset notice
  • Fire and earthquake insurance policy
  • For blue return filers: blue return financial statement

What Is the Difference Between Business Scale and Non-Business Scale?

The tax treatment of real estate income differs significantly depending on whether it is considered business scale.

Criteria for Determining Business Scale

  • Detached houses: 5 buildings or more
  • Apartments and condominiums: 10 or more independent units
  • Leased land (excluding parking lots): 50 or more contracts

Benefits Available at Business Scale

ItemBusiness ScaleNon-Business Scale
Special blue return deduction650,000 yen100,000 yen
Asset loss expense deductionFully allowedLimited
Salaries for dedicated family workersAllowedNot allowed

Frequently Asked Questions (FAQ)

Q. Do I need to file a tax return even if I have a loss?

Yes. A loss from real estate income can be offset against other income, which can help reduce your tax burden, so filing can still be beneficial even when you have a loss.

Q. Can I use tax filing software?

Yes. Even without specialized bookkeeping knowledge, you can use tax filing software to prepare your return efficiently.

Q. What happens if I miss the filing deadline?

Late-payment tax will be imposed. Even if you miss the filing deadline (March 15 of the following year), you should file as soon as possible.

Daisuke Inazawa, President & CEO of INA&Associates Inc.

Author

President & CEOINA&Associates Inc.

President & CEO of INA&Associates Inc. Leads real estate brokerage, rental leasing, and property management across Greater Tokyo and the Kansai region. Specialises in income-property investment strategy and advisory for ultra-high-net-worth individuals.

Daisuke Inazawa is the President and CEO of INA&Associates Inc., a Japanese real estate firm headquartered in Osaka with a Tokyo branch. He leads the company's three core businesses — real estate sales brokerage, rental leasing, and property management — across the Greater Tokyo Area and the Kansai region.

His areas of expertise include investment strategy for income-generating real estate, profitability optimisation of rental operations, real estate advisory for ultra-high-net-worth individuals (UHNWIs) and institutional investors, and cross-border real estate investment. He provides data-driven, long-horizon advisory to investors in Japan and overseas.

Under the management philosophy "a company's most important asset is its people," he positions INA&Associates as a "people-investment company" and is committed to sustainable corporate-value creation through talent development. He also writes and speaks publicly on leadership and organisational culture in times of change.

He has passed eleven Japanese professional qualification examinations: Licensed Real Estate Broker (Takken), Certified Real Estate Consulting Master, Licensed Condominium Manager, Licensed Building Management Supervisor, Certified Rental Housing Management Professional, Gyōseishoshi Lawyer (administrative scrivener), Certified Personal Information Protection Officer, Class-A Fire Prevention Manager, Certified Auctioned Real Estate Specialist, Certified Condominium Maintenance Engineer, and Licensed Moneylending Operations Supervisor.

  • Licensed Real Estate Broker (Takken)
  • Certified Real Estate Consulting Master
  • Licensed Condominium Manager
  • Licensed Building Management Supervisor
  • Certified Rental Housing Management Professional
  • Gyōseishoshi Lawyer (Administrative Scrivener)
  • Certified Personal Information Protection Officer
  • Class-A Fire Prevention Manager
  • Certified Auctioned Real Estate Specialist
  • Certified Condominium Maintenance Engineer
  • Licensed Moneylending Operations Supervisor