Japan Car Insurance Calculator
See your annual Japan car insurance premium in 10 seconds. Includes compulsory Jibaiseki (JCL) + voluntary Nin'i Hoken, 20-grade no-claim bonus (tōkyū), driver-age tiers, and typical prices from Sompo, Tokio Marine, MS&AD, AIOI, Sony Sonpo.
Vehicle & Driver
Annual Auto Insurance Cost
Total First Year
¥109,094
No-claim discount: 51%
Jibaiseki (2-yr)
¥17,650
Jibaiseki Annualised
¥8,825
Voluntary Annual
¥100,269
Tōkyū Grade
15 / 20
Tōkyū Grade Impact
Grade 15 — you receive approximately 51% off rack rate. Each claim-free renewal advances you one grade. One at-fault claim typically drops you 3 grades and adds the "jiko-ari" accident coefficient for 3 years — a 10-year cost hit for a single claim.
Jibaiseki (Compulsory CALI)
Jibaiseki (自賠責 / Compulsory Auto Liability Insurance, CALI): statutorily required for all Japanese vehicles and paid at shaken (vehicle inspection) every 2 years. 2026 rate ¥17,650 for this vehicle class. Covers BODILY INJURY to third parties ONLY, capped at ¥30M per death, ¥40M per severe permanent disability, ¥1.2M per injury. Does NOT cover property damage, your own injury, or your own vehicle — which is why every serious driver also buys nin'i hoken.
Nin'i Hoken (Voluntary)
Nin'i hoken (任意保険 / voluntary auto insurance): privately sold by Tokio Marine, Sompo Japan, MS&AD Aioi, Sony Sonpo, Saison Automobile, SBI Sonpo, Rakuten Sonpo etc. Typical coverages: taijin baishō (unlimited bodily-injury liability, ¥0/standard), taibutsu baishō (unlimited property liability), jinshin shōgai (own-body injury ¥30M-unlimited), sharyō hoken (own-vehicle damage, the largest premium driver). Direct online insurers (Sony Sonpo, SBI, Saison) typically 20-30% cheaper than traditional agent channels for equivalent cover.
For estimation only. Not professional financial, tax, or legal advice. Consult a qualified advisor before making decisions. Full disclaimer.
How car insurance works in Japan
Every car in Japan needs two separate policies. One is required by law. The other is optional but very important. Skipping the optional one is the single biggest money risk a driver faces.
Layer 1: Jibaiseki (the legal minimum)
Jibaiseki (自賠責) is the policy you must buy. You pay for it every two years when your car goes through shaken (the mandatory vehicle inspection). It costs around ¥17,540 to ¥21,550 for 24 months.
It only pays if you injure or kill another person. The limit is ¥30 million per death and ¥40 million for serious permanent injury. It does not pay for damaged property, your own injuries, or your own car.
So if you crash into a Mercedes, jibaiseki pays nothing for the car. That is why the second layer matters.
Layer 2: Nin'i hoken (the real cover)
Nin'i hoken (任意保険) is the optional policy. It sits on top of jibaiseki and fills every gap. It covers unlimited damage to others, their property, your own medical bills, and repairs to your own car (called sharyō hoken).
The price depends on your tōkyū (a no-claim rank from 1 to 20). New drivers start at rank 6, which gives about a 19% discount. Every clean year moves you up one rank. At rank 20, the discount reaches 63%. That takes 14 years of safe driving.
What happens if you make a claim
One at-fault claim drops your rank by 3 steps. You also get hit with a surcharge called jiko-ari keisū. This surcharge lasts 3 years.
Here is a real example. You pay a ¥150,000 minor dent out of your own insurance. Over the next 3 years your premium rises by around ¥60,000 to ¥100,000. So many drivers just pay small repairs in cash to keep their rank.
Agent vs direct online insurers
Big traditional firms like Tokio Marine Nichido, Sompo Japan, and MS&AD Aioi sell through agents. Online-only insurers sell straight to you and skip the agent fee:
- Sony Sonpo
- SBI Sonpo
- Saison Automobile
- Rakuten Sonpo
For the same cover, direct insurers quote 20% to 30% less. If you have a clean record and do not need someone to walk you through paperwork, you save real money by going direct.
Related calculators
You may also want to check your life insurance cover and a medical insurance plan. Both fill gaps that auto cover does not touch.
Common questions about Auto Insurance
Jibaiseki vs Nin'i Hoken — what's the difference?+
Jibaiseki (自賠責保険, Compulsory Automobile Liability Insurance) is the statutory minimum required to operate any motor vehicle in Japan — bodily injury to third parties ONLY, capped at ¥30M per death / ¥40M severe disability. Paid at shaken (vehicle inspection), 2-year premium ~¥12,000-¥20,000 for a passenger car. Nin'i Hoken (任意保険, voluntary) covers the gap: property damage, own-vehicle damage, own medical, bodily injury exceeding Jibaiseki caps. ~90% of Japanese drivers hold voluntary cover — driving with Jibaiseki alone is a massive liability risk.
What should Nin'i Hoken include at minimum?+
Baishō sekinin hoken (liability) with unlimited (mukaishō) bodily injury AND property damage coverage — the cap on Jibaiseki is nowhere near modern Japanese personal-injury settlements (a serious 30-year-old injury can exceed ¥200M lifetime care). Own-vehicle cover (sharyō hoken) is optional based on vehicle value. Driver medical (jinshinshōgai hoken) is worth including for co-passengers. Overseas GI coverage if you cross into Korea (via ferry) or travel with vehicle.
What is tōkyū (等級) and how does it affect premium?+
Tōkyū is the no-claim bonus grade, 1-20. New drivers start at grade 6; a claim-free year promotes one grade up to 20. At grade 20, the discount is ~63% off base premium. An at-fault claim drops 3 grades and brings a 3-year accident coefficient (~20% loading each year). A careful driver reaches the top discount band by year 14 and holds it for life.
How do driver age categories affect premium?+
Age-limited tariffs (named age or "age 21+", "age 26+", "age 35+", "all ages") directly discount premium — the higher the floor, the cheaper the policy. Under-21 drivers face ~70-100% loading. Families can list specific drivers with a "nenrei-hanishiteiritsushi" clause ensuring young drivers are correctly rated. Drivers over 70 see mild loadings return (~10-20%) due to rising incident rates.
2026 Nin'i Hoken premium benchmarks?+
35-year-old, 10 years licence, grade 20 (top no-claim), Toyota Prius, Tokyo, standard comprehensive + unlimited liability: ~¥60,000-¥85,000/yr. New driver (grade 6) same car: ~¥180,000-¥240,000/yr. Shaken every 2 years adds ~¥15,000-¥45,000 on top depending on vehicle weight and emissions class. Online direct insurers (Sony Sonpo, SBI Sonpo, Saison Sonpo, Rakuten Sonpo) typically undercut agency channels by 20-35%.
Does Japanese motor insurance cover me in Korea or Taiwan?+
No — standard Japanese Nin'i Hoken is territorial. Ferry trips to Korea require buying temporary GCC-equivalent cover at the port. Long-term overseas use needs a specific international policy. Rental vehicles abroad should be insured through the rental company plus a credit-card supplement or travel-insurance CDW.
Does my home insurance cover personal-effects theft from my car?+
Generally no — Nin'i Hoken's "own vehicle" (sharyō hoken) covers vehicle damage and contents fitted to the vehicle (stereo, dashcam). Personal effects (laptop, camera, bags) stolen from the car are typically covered under home contents insurance or a specific personal effects rider. Check both policies to avoid gaps; high-value electronics often need schedule endorsement.