Japan Childcare Leave Benefit Calculator (育児休業給付金 & 出生後休業支援給付金)
japan_childcare_leave_benefitYour childcare-leave money under the April-2025 framework: 67% (then 50%) of daily wage, plus the new +13% top-up that lifts the first 28 days to 80% gross — with the exact caps valid 1 Aug 2026 – 31 Jul 2027. Computes Japanese childcare-leave benefits: the base 育児休業給付金 (67% of your daily wage for the first 180 benefit days, 50% after) and the 出生後休業支援給付金 introduced April 2025 — a +13% top-up on up to 28 days that lifts them to 80% gross, roughly 100% of normal net take-home once the tax and social-insurance exemptions are counted. General AI still answers 67% (the top-up postdates most training data) and garbles the condition’s asymmetry: the father’s +13% is satisfied automatically while the employed mother is on 産後休業 — it is the mother’s claim that needs the father to take ≥14 days (or a waiver). Uses the caps valid 1 Aug 2026 – 31 Jul 2027 (¥16,540 daily ceiling; ¥60,205 top-up cap per 28 days); every cap revises each 1 August.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| claimant | No | Who is claiming? The asymmetry general AI misses: a father’s +13% condition is satisfied AUTOMATICALLY while the employed mother is on maternity leave (産後休業 counts as waiver #6) — he only needs his own ≥14 days. The MOTHER’s claim is the one that needs the father to take ≥14 days of leave, unless a waiver applies (spouse not employed / self-employed / single parent). | father |
| leaveDays | No | Leave days to model (days) Total benefit days you plan to take. The 67% rate runs for the first 180 benefit days (the counter includes 産後パパ育休 days), then steps down to 50%. | |
| monthlyWage | No | Average monthly wage before leave (¥/mo) Average of the 6 months of wages before the leave starts — this sets your 賃金日額 (daily wage) = wage × 6 ÷ 180 = wage ÷ 30. Use gross pay including fixed allowances, before tax and social insurance. | |
| bothCondition | No | Is the +13% condition met? The 出生後休業支援給付金 needs your own leave of ≥14 days within the statutory window AND the spouse condition per the claimant note above (a father’s is auto-met while the employed mother is on 産後休業; a mother’s needs the father’s ≥14 days or a waiver). When met, the first 28 days pay 80% gross. | yes |