The Long-Term Care Insurance System (Kaigo Hoken)
Long-Term Care Insurance Japan, known as 介護保険 (kaigo hoken, "Long-Term Care Insurance"), is the public system that pays for elder care once daily life starts needing help.12 If your parent lives in Japan and that point is approaching, this is the system you will meet first, because almost no covered service starts without it.
Procedures, fees, and requirements can change. Confirm current details at the Ministry of Health, Labour and Welfare (厚生労働省) long-term care pages and your municipal long-term care section.
Overview
Kaigo hoken is a mandatory public social insurance system, separate from ordinary medical insurance.12 It was established in 2000 as population aging shrank family support and raised care costs, moving elder care onto a society-wide footing.32
Everyone who is registered as a resident and aged 40 or older pays in. Benefits flow only after the municipality certifies a need for care, so paying premiums and receiving services are two separate steps.41
The scale is large. About 7.1 million people aged 65 and older (19.4 percent of that age group) were certified as needing care in 2024, with an average of 6.1 million monthly service users (as of 2024; confirm current figures with the Ministry of Health, Labour and Welfare).2 Funding is split evenly, with half coming from premiums paid by the insured and half from national, prefectural, and municipal tax contributions.3 MHLW's overview page lists a Reiwa 8 (2026) amendment among the act's published revisions, a reminder that premium and threshold figures move on revision cycles.5
The terms below recur throughout this article:
| Japanese term | Romaji | English gloss |
|---|---|---|
| 介護保険 | kaigo hoken | Long-Term Care Insurance |
| 社会保険 | shakai hoken | Social insurance, the employer-based health, pension, and care bundle |
| 国民健康保険 | kokumin kenkō hoken | National Health Insurance |
| 要支援 | yōshien | Support levels 1 to 2, the preventive tier |
| 要介護 | yōkaigo | Care levels 1 to 5, escalating daily-care need |
Who Pays Premiums and How
Every registered resident starts paying long-term care premiums from age 40.41 No enrollment procedure is needed, and nationality makes no difference to the bill.
The insured fall into two categories. Category 1 covers all residents aged 65 and older. Category 2 covers residents aged 40 to 64 who are enrolled in public health insurance.41
How you pay depends on which health insurance you belong to. Company employees have the care premium collected together with health insurance by the employer, deducted from salary and split with the employer in the usual way.4 It shows up as a payslip deduction, not a separate bill.
Residents outside employer insurance, such as the self-employed and retirees on National Health Insurance, pay the care portion through their municipal NHI billing instead.4 Category 1 premiums work the same municipal way: each municipality sets its own income-tiered premiums, deducted in principle from pension payments, with direct billing where pension deduction does not apply.41
Premium levels move on government schedules. The nationwide weighted-average base premium for Category 1 in the ninth planning period (fiscal 2024 to 2026) is ¥6,225 per month, up from ¥6,014 in the previous period (as of 2026-09-05; confirm current figures with the Ministry of Health, Labour and Welfare).1 Under Kyokai Kenpo the care-insurance rate for fiscal 2025 is 1.59 percent of standard monthly remuneration for employees aged 40 to 64, shared with the employer, while company health insurance societies set their own rates (as of fiscal 2025).1 Category 2 billing starts from the month covering the day before your 40th birthday.4
| Premium | How it is collected | As of | Source |
|---|---|---|---|
| Category 1 national average base, 9th period (FY2024-2026) | ¥6,225/month, municipal income tiers, pension deduction or direct billing | 2026-09-05 | 1 |
| Kyokai Kenpo care rate, ages 40-64 | 1.59% of standard monthly remuneration, shared with employer | FY2025 | 1 |
Premiums bundled into Shakai Hoken
If you are a salaried worker aged 40 to 64, your care premium travels with your health insurance.41 Your employer collects it, splits it with you, and remits it. The line on your payslip is the system working as designed, not an error to query.
Premiums billed separately for NHI-only residents
If you are on National Health Insurance, the care portion arrives through your municipal NHI bill.4 Check for it around your 40th birthday, since no separate notice announces the start.
An unpaid premium, for example an unnoticed direct bill sent to a parent living alone, can complicate later use of services. Confirming premium status belongs on the early checklist, alongside the application itself.1
Who Can Receive Benefits
Being insured is not the same as receiving services.13 Covered care starts only after care-need certification, and the entry rule depends on age.
The split looks like this:
Benefits at age 65 and older
From age 65, the cause of the care need does not matter.41 Whatever makes daily life hard, physical decline, dementia, or the aftermath of illness, the assessment turns on how much help is needed, not on the diagnosis behind it.
Benefits at ages 40 to 64 with specified conditions
Between 40 and 64, the need must arise from one of 16 specified aging-related conditions, known as 特定疾病 (tokutei shippei, "specified diseases").641 The list includes terminal cancer with no prospect of recovery, rheumatoid arthritis, ALS, Parkinson's disease and related syndromes, presenile dementia, cerebrovascular disease, COPD, and diabetic complications affecting nerves, kidneys, or eyes, among others (as listed by the Ministry of Health, Labour and Welfare).1
A qualifying diagnosis alone does not establish entitlement. The need for care must be attributable to the condition, and the municipality makes that call during certification.1
How Certification and Benefit Caps Work
Certification runs through the municipality where the person lives. Applications go to the municipal long-term care section or the local 地域包括支援センター (chiiki hōkatsu shien sentā, "community comprehensive support center"), filed by the person, by family on their behalf, or with the center's help.41
The sequence follows the same steps everywhere:
The home visit is a structured interview about what the person can and cannot do each day. The doctor's written opinion, the 主治医意見書 (shujii ikensho, "attending physician's written opinion"), carries real weight, so the regular doctor should know the daily difficulties before writing it.73 A computer scores the survey into a provisional level, and the review board adjusts it after reading the investigator notes and the physician opinion.7
The statutory principle is a decision within 30 days of application, and certification takes effect from the application date once approved.1 In practice, allow more time. MHLW figures for fiscal 2023 applications across 1,559 insurers put the median insurer-average time from application to decision at 39.3 days (as of 2026-09-05; confirm current figures with the Ministry of Health, Labour and Welfare).1
After certification, an assigned ケアマネジャー (kea manejā, "care manager") turns the level into a working care plan, and that management service itself carries no user charge.13 A first certification is typically valid about six months, while renewals commonly run twelve months and can extend up to 48 months for a stable same-level case (as of 2026-06-03).7 When the condition changes materially, a classification-change request triggers a fresh survey without waiting for renewal.7
The 7 certification levels
The scale has seven steps. The two support levels (yōshien 1 to 2) describe people who are largely independent but need help to prevent decline. The five care levels (yōkaigo 1 to 5) run from partial daily assistance at level 1 to near-total care at levels 4 and 5.473
The level decides more than the budget. It also gates options: new admission to a special nursing home (tokuyō) generally requires care level 3 or above.73
Monthly benefit caps and co-payments
Each level carries a monthly benefit ceiling, the 区分支給限度額 (kubun shikyū gendogaku, "monthly benefit ceiling"), counted in service units worth roughly ¥10 each.7 The care manager plans covered services inside that ceiling. Spending above it is fully private, and facility room and meals sit outside these ceilings entirely.7
The ceilings below are nationwide reference values; unit prices shift by area and with periodic revisions. At a 10 percent co-payment, a care-level-3 plan used to its ceiling costs the family on the order of ¥27,000 a month, before any high-cost refund (as of 2026-06-03; confirm current figures with the Ministry of Health, Labour and Welfare).7
| Level | Monthly ceiling (units) | Approx. covered value | As of | Source |
|---|---|---|---|---|
| Support 1 (yōshien 1) | about 5,032 | roughly ¥50,000 | 2026-06-03 | 7 |
| Support 2 (yōshien 2) | about 10,531 | roughly ¥105,000 | 2026-06-03 | 7 |
| Care 1 (yōkaigo 1) | about 16,765 | roughly ¥167,000 | 2026-06-03 | 7 |
| Care 2 (yōkaigo 2) | about 19,705 | roughly ¥197,000 | 2026-06-03 | 7 |
| Care 3 (yōkaigo 3) | about 27,048 | roughly ¥270,000 | 2026-06-03 | 7 |
| Care 4 (yōkaigo 4) | about 30,938 | roughly ¥309,000 | 2026-06-03 | 7 |
| Care 5 (yōkaigo 5) | about 36,217 | roughly ¥362,000 | 2026-06-03 | 7 |
Within the ceiling, the user pays 10 percent of covered service costs in principle.413 Higher-income users pay 20 or 30 percent depending on income.41 The 20 percent band broadly covers a single person with pension plus other income from around ¥2.8 million a year, and the 30 percent tier broadly from around ¥3.4 million a year, though household composition changes the thresholds (as of 2026-09-05).1 The municipal burden-ratio certificate, the 負担割合証 (futan wariai shō, "burden-ratio certificate"), is the authority for your share, not these round figures.1
Two protections cap the downside. A high-cost care benefit refunds co-payments above income-tied monthly ceilings.41 And practitioner sources report a government proposal under review that would widen the 20 percent band to lower incomes with a transitional cap on the monthly increase, so a parent near a boundary should re-check the certificate each year (as of 2026-09-05).1
Foreign Residents and Kaigo Hoken
Enrollment follows resident registration, not nationality.1 Registered foreign residents aged 40 and older join and pay on the same terms as Japanese residents, with ages 65 and older in Category 1 and ages 40 to 64 in Category 2.4 Certification, benefit ceilings, and co-payment rules apply identically.1
What differs is practical, not legal. Virtually all paperwork, assessments, and daily care communication run in Japanese, and most care staff speak only Japanese.3 Bring a bilingual companion or interpreter to the assessment and every care-plan meeting, and prepare a translated one-page summary of the parent's conditions and needs for the first municipal conversation.
Good to know
Premiums continue even if you never use care services
Paying from age 40 buys no service until need is certified. Enrollment is automatic, but insurance payment requires an approved certification and an eligible care plan on top of it.41
Many mid-tenure residents first meet kaigo hoken as an unexplained payslip line in their forties and only connect it to elder care a decade later. Understanding the gap early prevents the surprise of paying for years and still needing an application when care becomes urgent.
Certification takes time, so apply before care becomes urgent
The law aims at 30 days, but the measured median insurer average was 39.3 days in fiscal 2023, with the slowest insurers averaging 80.6 days.1 Confirm your municipality's own timetable before booking travel or leave around a parent's discharge.
If support cannot wait for the decision, ask the municipality and the care manager about a provisional care plan. Confirm the costs first, since a non-qualifying result or a lower benefit limit can leave the family paying part or all of the services used.1
Your municipality sets your over-65 premium and runs your assessment
Category 1 premiums are set locally on income tiers and revised on three-year cycles, so two retirees with identical incomes can pay different premiums in different cities.1 The assessment, the review board, and the timetable are local too, across 1,559 insurers with their own rules.1
The practical consequence is simple. Confirm premium amounts, assessment counters, and timelines with the municipality where the parent lives, not with a national average or another city's guide.
The 40 to 64 pathway is narrower than many expect
A parent in their fifties with growing needs but no qualifying diagnosis cannot use covered care through Category 2.61 General frailty, orthopedic injury without a listed condition, or mental-health needs outside the specified diseases do not pass the gate.
This is the single most common misunderstanding among families caring for younger parents. Check the diagnosis against the specified-disease list with the physician first, and ask the municipality about disability services in parallel so a rejected care application does not cost weeks.61
See also
- Care-Level Certification (Yoshien / Yokaigo)
- In-Home Care Services (Homon Kaigo)
- Day Services and Short Stays (Day Service / Short Stay)
- Residential Care: Tokuyo vs. Roken vs. Yuryo Rojin Home
- Bringing Aging Parents to Japan