Japan Mortgage + Property Tax Calculator
Estimate the true monthly cost of owning a home in Japan: your mortgage payment (元利均等) plus annual fixed-asset tax (固定資産税) and city-planning tax (都市計画税). Enter the loan terms and the assessed values of land and building to see the combined monthly burden.
Simplified estimate. Property tax uses the assessed value (固定資産税評価額), not market price, and excludes new-building reductions and acquisition taxes. Rates vary by municipality.
Frequently asked questions
What is the small-scale residential land reduction?+
For residential land up to 200㎡ (小規模住宅用地), fixed-asset tax is charged on 1/6 of the land's assessed value and city-planning tax on 1/3. This tool applies it by default.
How is property tax calculated?+
Fixed-asset tax is the standard 1.4% of the (reduced) assessed value, and city-planning tax up to 0.3%. The assessed value (固定資産税評価額) is usually lower than the market price — check your tax notice.
Is this exact?+
It is a simplified estimate. It excludes the temporary new-building reduction, registration/acquisition taxes and management fees, and rates can vary by municipality.