Overview
Japan mortgage tax deduction (住宅ローン控除) for move-ins 2026-2030 (FY2026 reform): borrowing limit and 13/10-year period by home type, performance class, special household and floor area; yearly deduction or a full-period projection from a loan, split between income and resident tax. Refuses older move-ins; asks for missing facts. Checked against National Tax Agency tax answers and an independent implementation.
Protocol
x402
Price
$0.0010
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
logigrain
Indexed
2026-11-09 23:08:25
Health
Status
unknown
Latency (p50)
—
Uptime (30d)
—
Reliability Score
—
Last Checked
Never
Last Healthy
Never
Consecutive Failures
0
Input Schema
{
"method": "GET",
"queryParams": {
"floor_area": "70",
"kosodate": "yes",
"loan_amount": "40000000",
"move_in": "2026-04",
"performance": "zeh",
"rate": "0.8",
"term_years": "35",
"type": "new"
},
"type": "http"
}
Output Schema
{
"example": {
"housing_loan": {
"basis": {
"as_of_date": "2026-10-19",
"move_in_year": 2026,
"rules": "令和8年度税制改正後の住宅ローン控除(2026〜2030年入居、令和8年4月1日現在の法令。2026年10月時点で確認)"
},
"borrowing_limit": 45000000,
"deduction_period": {
"first_year": 2026,
"last_year": 2038
},
"deduction_rate": 0.007,
"deduction_years": 13,
"eligible": true,
"max_deduction_per_year": 315000,
"projection": {
"monthly_payment": 109224,
"schedule": [
{
"deduction": 275300,
"year": 2026,
"year_end_balance": 39337995
}
],
"total_deduction": 3017000
},
"special_household": true,
"summary_ja": "2026年4月入居の新築のZEH水準省エネ住宅(70㎡)(子育て・若者夫婦世帯)は、借入限度額4,500万円・控除期間13年(2026〜2038年分)で、各年の控除額は年末残高×0.7%、最大で年315,000円です。借入4,000万円・金利0.8%・35年の元利均等返済なら、13年間の控除額の合計は約3,017,000円の見込みです(税額が控除額より少ない年は全額は戻りません)。(令和8年度税制改正後の住宅ローン控除、2026年10月時点で確認)"
}
},
"type": "json"
}