Japan kyosai vs FSA insurance perimeter matrix

TL;DR

Japan runs two parallel risk-pooling perimeters that look similar at the customer-facing product level but sit under completely different regulators, supervisory laws, capital regimes, tax codes, and distribution constraints. The FSA-regulated commercial insurance perimeter, governed by theInsurance Business Act(Insurance Business Law), covers the life big four (Nippon Life, Dai-ichi Life, Sumitomo Life, Meiji Yasuda), the non-life big three (Tokio Marine HD, MS&AD, Sompo HD), online life carriers likeLifenetandSBI Life, foreign-life affiliates, and the special-law-grounded[life-insurers/kampo-life|Kampo Life]. The kyosai (共済) cooperative perimeter, governed by sector-specific cooperative laws and supervised mostly by MAFF, MHLW, METI, or prefectural governors, coversJA Kyosai / Zenkyoren overview(agriculture under the Agricultural Cooperatives Act / MAFF), Zenrosai Zenrosai (consumer cooperatives under the Consumer Livelihood Cooperatives Act / MHLW), Kenmin-kyosai Kenmin-kyosai (prefectural cooperative federation), COOP Kyosai (CO・OP consumer cooperative federation), and Zenjikyo Zenjikyo (auto cooperative for trucking / transport operators). The two perimeters differ on five structural axes: (1) regulator and supervisory law; (2) member-only versus general public access; (3) tax treatment — premium-deduction limits and surplus-distribution mechanics; (4) capital regime — FSA economic-valueESRversus cooperative-reserves frameworks; and (5) market share by line, with kyosai punching far above weight in farm-area auto / fire / building and in basic life riders at low premiums. Comparing a JA共済 building-cover policy and a Sompo Japan fire policy as the “same product” misses the regulatory perimeter that determines pricing, capital backing, solvency disclosure, and consumer-protection rules.

Wiki route

This page sits underinsurance INDEXand is the regulator-perimeter companion tothe cooperative insurance system Japan entryand to the commercial-insurance overlayslife big-four overlay, non-life big-three reinsurance / cat overlay, andthe global solvency framework comparison matrix. Read it together withthe JA Zenkyoren overview, kampo-japan-post-insurance, the Japan life insurance big four entry, the Japan non-life big three entry, economic-value-based solvency, ESR, the internet life insurance business model, foreign-life-affiliate positioning, andmedical / cancer insurance product economicsfor product-side context.

The clean entity anchors for the commercial side includeNippon Life, Dai-ichi Life HD, Sumitomo Life, Meiji Yasuda, Tokio Marine HD, MS&AD, Sompo HD, Kampo Life, Lifenet, andSBI Life. The kyosai side does not consolidate into a single national listed holdco — each federation is its own cooperative federation governed by its own special law.

Why this matrix matters

Japanese households often hold a mix of FSA-regulated commercial insurance and kyosai cooperative cover without distinguishing the two on tax, suitability, or consumer-protection grounds. Three structural questions sit underneath the perimeter line:

Which law and which regulator backs the policy? Insurance Business Act + FSA is one regime; cooperative-sector laws + MAFF, MHLW, METI, prefectural governors are different regimes with different examination intensity, capital floors, and conduct rules.
Who can buy the policy? FSA-regulated insurance is sold to the general public. Kyosai is, formally, sold to cooperative members. The “member” definition is loose for some federations (paying a small membership fee at the time of policy purchase) and tighter for others (genuine farm-area / labour-union membership).
How does the surplus get returned, and how is the premium taxed? Commercial insurance pays out under a defined-benefit contract; mutual-form commercial life insurers distribute policyholder dividend. Kyosai distributes割戻金 (warimodoshi-kin) surplus to members under the cooperative-law surplus-distribution rules. The income-tax deduction treatment for premiums and the consumer-protection backstop differ accordingly.

The matrix below records these axes as routing. Specific market-share, surplus-ratio, and tax-deduction-limit figures are date-specific and should be confirmed against current FSA, MAFF, MHLW, federation disclosure, and NTA (National Tax Agency) guidance.

FSA commercial insurance perimeter — Insurance Business Act core

The FSA commercial-insurance perimeter is theInsurance Business Act(Insurance Business Law) regime. Carriers are licensed under one of two licence types — life insurance company license or non-life insurance company licence — with a separate small-amount short-term insurance carrier category for low-coverage / short-tenor products. The regulator is the[FSA|Financial Services Agency], with local Finance Bureaux executing inspections. The headline capital metric is ESR under the FSA economic-value-based solvency regime rolled out from April2025, replacing the traditional solvency-margin ratio.

Within this perimeter sit (i) thelife big four, (ii) thenon-life big three, (iii) the foreign-life affiliates (seeforeign-life-affiliate positioning), (iv) online life carriers likeLifenetandSBI Life(seeinternet life model), (v) bancassurance-tilted affiliates such asDai-ichi Frontier LifeandMS Primary Life, (vi) lifeplanner-channel carriers likeSony LifeandPrudential Japan, and (vii) the special-law-groundedKampo Lifewhich sits inside the Japan Post group post-privatization and is dual-regulated under the Insurance Business Act and the post-related implementing legislation. Industry associations are the Life Insurance Association of Japan (Seiho) and the General Insurance Association of Japan (Sonpo).

The FSA perimeter has the Policyholder Protection Corporation backstops — Life Insurance Policyholders Protection Corporation of Japan and Non-Life Insurance Policyholders Protection Corporation of Japan — which provide a defined recovery floor to commercial-insurance policyholders in the event of insurer failure. Kyosai sits outside these backstops and relies on cooperative-federation reserves and special-law guarantees instead.

Kyosai perimeter — cooperative laws and sector regulators

The kyosai perimeter is built on multiple cooperative laws each with its own sector regulator:

JA Kyosai / Zenkyoren overview — National Mutual Insurance Federation of Agricultural Cooperatives. Governed by the Agricultural Cooperatives Act. Supervised by MAFF. The largest kyosai federation by reserves; the largest single P&C-equivalent operator on a building / auto-cover basis in farm areas. Underwriting is conducted by the JA federation; cover is sold through local JA (Agricultural Cooperatives) cooperatives to JA members.
Zenrosai / Kokumin Kyosai coop — National Federation of Workers and Consumers Insurance Cooperatives. Governed by the Consumer Livelihood Cooperatives Act. Supervised by MHLW (Ministry of Health, Labor and Welfare). Sells a wide range of basic life, accident, fire, auto, and group cover to consumer cooperative members nationwide.
**Prefectural cooperative federations under the National Federation of Workers and Consumers Cooperative Federation (National Federation of Workers and Consumers Cooperative Federation, often associated with the Zenkokuren network). Governed by the Consumer Livelihood Cooperatives Act. Supervised by prefectural governors with MHLW oversight. Distinguished by very low flat premiums and limited per-event benefit caps; broadly available with minimal underwriting.
COOP Mutual Aid / Co-op Mutual Aid — Japan CO-OP Insurance Consumer Cooperative Federation. Governed by the Consumer Livelihood Cooperatives Act. Supervised by MHLW. Distributed through CO・OP consumer cooperative members.
Zenjikyo — Federation of cooperative auto insurance for truck / transport operators (zenjikyo / similar). Governed by sector-specific cooperative laws. Supervised by METI / MLIT-adjacent oversight depending on the federation. Focused on commercial-vehicle / trucking auto cover.
Other: small-business cooperatives, fire-specific cooperatives, industry-specific federations under the Small and Medium-Sized Enterprise Cooperatives Act (METI).

The kyosai perimeter is, by design, member-only. The strength of the “member” gate varies: JA membership is genuine farm-area / community membership; consumer cooperative membership at Kenmin-kyosai or COOP共済 is typically achieved by paying a small (one-off, low-yen) membership fee at the point of purchase, which makes the perimeter practically open to the general consumer. The supervisory law is the cooperative-sector law, not the Insurance Business Act, which means the conduct, capital, and disclosure obligations differ from FSA-regulated insurers.

Tax, surplus, and capital treatment

The income-tax treatment of premiums and surplus differs across the perimeter:

Life insurance premium deduction: Premium payments to FSA-regulated life insurers and to qualifying kyosai life-style products both qualify for the Life insurance premium deduction under the Income Tax Act. The deduction is split into general life insurance, medical / nursing insurance, and individual annuity insurance categories. Kyosai-paid premiums for qualifying life-style cover are deductible on broadly the same basis as commercial life-insurance premiums.
Earthquake / fire premium deduction: similarly available for FSA-regulated earthquake cover and qualifying kyosai fire / building cover.
Surplus distribution (割戻金): Both FSA-regulated mutual life insurers and kyosai cooperatives distribute surplus to policyholders / members. For FSA mutuals, the distribution is policyholder dividend disclosed in the integrated report. For kyosai, the distribution is 割戻金 disclosed in the federation’s annual report under cooperative-law surplus-distribution rules. The tax character of the distribution can differ — kyosai 割戻金 is generally treated as a return of premium rather than as taxable income for the member.
Corporate income tax: FSA-regulated insurers are subject to standard corporate income tax. Cooperative federations are subject to a corporate-cooperative tax regime that recognises the non-profit / mutual character of cooperatives, with sector-specific reductions and rate differences.
Consumption tax: Insurance premiums are non-taxable for consumption tax in both perimeters.

The capital regime differs as well. FSA-regulated insurers report ESR under the FSA economic-value-based solvency regime; large cross-border groups also report group-level ICS under IAIS supervision (seeJapan IAIG / ICS mapping). Kyosai federations are not subject to FSA ESR. They report cooperative-reserve adequacy under the sector regulator’s framework — for JA共済, MAFF guidance and the federation’s own actuarial framework; for Zenrosai / Kenmin / COOP共済, MHLW / prefectural-governor frameworks under the Consumer Livelihood Cooperatives Act. The capital adequacy of large kyosai federations is widely understood to be comfortable but the metric and disclosure format are not directly comparable to ESR.

Big comparison matrix table

The matrix below lists axes that differentiate the FSA commercial-insurance perimeter from the principal kyosai federations. Specific market shares, capital ratios, and tax-deduction limits are date-specific and should be sourced from each federation’s annual report, FSA / MAFF / MHLW publications, and NTA guidance.

Regulator, law, and licence

Axis	FSA commercial life big-4 / non-life big-3 / foreign / online / Kampo	JA Kyosai Zenkyoren	Zenrosai Zenrosai / Kokumin Kyosai coop	Kenmin Kyosai	COOP Kyosai	Zenjikyo
Regulator	[[FSA	Financial Services Agency]](Financial Services Agency)	MAFF (Ministry of Agriculture, Forestry and Fisheries)	MHLW (Ministry of Health, Labor and Welfare)	Prefectural governor + MHLW	MHLW
Supervisory law	Insurance Business Act; Kampo Life dual-regulated with post-related law	Agricultural Cooperatives Act	Consumer Livelihood Cooperatives Act	Consumer Livelihood Cooperatives Act	Consumer Livelihood Cooperatives Act	Sector-specific cooperative laws / Small and medium-sized enterprises, etc.
Licence type	Life insurance company / non-life insurance company / small-amount short-term insurance carrier	Cooperative federation licence under MAFF	Cooperative federation licence under MHLW	Prefectural cooperative federation licence	Cooperative federation licence under MHLW	Federation licence under sector law
Industry association	Seiho (Life Insurance Association), Sonpo (Japan General Insurance Association)	JA group internal	Zenrosai network	Prefectural / national network	CO・OP federation	Sector federation
Conduct rules	FSA Solicitation Rules, Financial Instruments and Exchange Act overlay for some products	Cooperative-law solicitation rules	Cooperative-law solicitation rules	Cooperative-law solicitation rules	Cooperative-law solicitation rules	Cooperative-law solicitation rules
Policyholder protection backstop	Life / Non-life Insurance Policyholders Protection Corporation	Federation reserves; no commercial Policyholder Protection Corporation backstop	Federation reserves; no commercial PPC backstop	Federation reserves	Federation reserves	Federation reserves

Membership / access gate

Axis	FSA commercial insurance	JA Kyosai	Zenrosai	Kenmin-kyosai	COOP Kyosai	Zenjikyo
Access	Open to general public	JA cooperative members (farm-area / community); “associate membership” 准組合員 widely available	Cooperative members; one-off membership fee at point of purchase	Cooperative members; one-off small membership fee	CO・OP cooperative members; one-off membership fee	Industry federation members (truck / transport operators)
Underwriting intensity	Full medical / risk underwriting depending on product	Risk underwriting on auto / building; lighter on life	Lighter on simple life / accident / fire	Very light; flat premium, capped benefit	Light on simple life / fire / accident	Commercial vehicle risk underwriting
Premium structure	Risk-rated; age / health-banded; product-specific	Risk-rated for auto / building; class-rated for life	Class-rated, simple flat tiers	Flat low-premium tiers (e.g. ¥2,000 / month styles)	Class-rated, simple tiers	Risk-rated for commercial vehicles
Geographic concentration	Nationwide	Farm areas; strong rural and suburban share	Nationwide; labour-union and consumer cooperative bases	Nationwide via prefectural federations	Nationwide via CO・OP federation	Trucking / transport operators nationwide

Capital and disclosure

Axis	FSA commercial insurance	JA Kyosai	Zenrosai	Kenmin-kyosai	COOP Kyosai	Zenjikyo
Capital metric	ESR (FSA economic-value-based solvency, from April2025)	Cooperative-reserves adequacy under MAFF framework	Cooperative-reserves adequacy under MHLW framework	Same	Same	Same
Group / ICS overlay	IAIG-designated groups subject to ICS at the holdings level — see[[insurance/japan-iaig-ics-mapping	Japan IAIG / ICS mapping]]	Not subject to IAIS ICS	Not subject to IAIS ICS	Not subject to IAIS ICS	Not subject to IAIS ICS
Annual disclosure	Integrated report, mid-term management plan, FSA disclosure document	Federation annual report, supervisory MAFF filings	Federation annual report, MHLW filings	Federation annual report, prefectural filings	Federation annual report, MHLW filings	Federation annual report, sector filings
Embedded value disclosure	Voluntary EV for life carriers	Not standard	Not standard	Not standard	Not standard	Not standard
Reinsurance counterparty disclosure	High-level in integrated report; detail in dedicated disclosure	High-level in federation report	High-level in federation report	High-level in federation report	High-level in federation report	High-level in federation report
Disclosure language	Listed-equity grammar for holdcos; mutual surplus grammar for mutuals; FSA-prescribed disclosure document	Cooperative-federation grammar with surplus / 割戻金 disclosure	Cooperative-federation grammar	Cooperative-federation grammar	Cooperative-federation grammar	Cooperative-federation grammar

Tax treatment

Axis	FSA commercial insurance	Kyosai (qualifying products)
Life premium deduction	Yes — split into general life / medical-nursing / individual annuity	Yes — for qualifying life-style cover sold by JA Kyosai / Zenrosai / Kenmin-kyosai / COOP Kyosai
Earthquake premium deduction	Yes for earthquake riders to fire policies	Yes for qualifying kyosai earthquake riders to building cover
Surplus distribution to policyholder / member	Policyholder dividend (mutual life) or shareholder dividend (listed holdco)	割戻金 (warimodoshi-kin) to members under cooperative-law rules
Tax character of distribution	Policyholder dividend treated as defined under tax code; shareholder dividend taxed as dividend income	割戻金 generally treated as return of premium rather than taxable income
Corporate income tax on carrier	Standard corporate income tax	Cooperative-corporate tax regime with sector-specific reductions
Consumption tax on premium	Non-taxable	Non-taxable

Product offering by line

Line	FSA commercial insurance	JA Kyosai	Zenrosai	Kenmin-kyosai	COOP Kyosai	Zenjikyo
Whole / term life	Full range from big-4 mutual / holdco / online / foreign affiliate	whole life mutual aid, term life mutual aid, etc.	Kokumin mutual aid life cover	Limited flat-cap life cover	Simple life cover	Not core
Individual annuity	Yen / foreign-currency annuity from life carriers and bancassurance affiliates	Annuity-style products available	Limited annuity-style cover	Limited annuity	Limited annuity	Not core
Medical / cancer / nursing	Big specialty franchise (Aflac, AIA, Tokio Marine Anshin, MS Aioi, foreign affiliates) — see[[insurance/medical-cancer-insurance-product-economics	medical / cancer insurance product economics]]	Medical / nursing riders to base life	Medical / accident cover	Limited medical cover at low flat premium	Medical / accident cover
Voluntary auto	Big-three non-life dominant; online direct affiliates ([[non-life-insurers/sony-insurance	Sony Insurance]], [[non-life-insurers/sbi-insurance	SBI Insurance]], [[insurance/saison-automobile-fire	Saison]])	Major share in farm areas	Auto cover available
Fire / building / residential	Big-three non-life dominant	Major share in farm areas — Building Rehabilitation Mutual Aid (“tate-kou”), Fire Mutual Aid	Kokumin Mutual Aid fire cover	Limited fire cover at low flat premium	Fire cover	Not core
Earthquake (household)	Big-three non-life underwrite the public-private scheme — seeearthquake-insurance-public-private-scheme	JA共済 building cover has earthquake rider with own pool	Earthquake rider to fire cover	Limited earthquake rider	Earthquake rider	Not core
Group life / corporate	Big-4 life dominant	Limited	Group employer cover via labour-union route	Limited	Limited	Trade-association group cover
P&I / marine / specialty	Big-three non-life and foreign reinsurers / Lloyd’s — seemarine-insurance-and-pi-cover-market	Not core	Not core	Not core	Not core	Trucking liability

Line	FSA commercial perimeter share (conceptual)	Kyosai perimeter share (conceptual)	Largest kyosai federation in line
Whole / term life	Dominant	Material, especially at low premium tiers	JA共済 / Zenrosai
Medical / cancer / nursing	Dominant; foreign affiliates lead cancer specifically	Material at simple-rider tier	JA Kyosai / Kenmin-kyosai / COOP Kyosai
Individual annuity	Dominant	Small	JA mutual aid
Voluntary auto	Dominant in urban areas	Material in farm areas	JA Kyosai
Fire / building (residential)	Dominant in urban areas	Material in farm areas	JA Mutual Aid (Building Rehabilitation Mutual Aid / Fire Mutual Aid)
Earthquake (household)	Dominant via public-private scheme	Material via JA Mutual Aid building rider	JA Mutual Aid
Group life / corporate	Dominant	Small	Zenrosai
Trucking / commercial-vehicle auto	Dominant via big-3 non-life	Material via Zenjikyo / similar	Zenjikyo
Small-business basic cover	Dominant via big-3 non-life	Material via small-business cooperative kyosai	Sector federations under SMEs and other cooperative combination method

Distribution channel architecture

Channel	FSA commercial perimeter	Kyosai perimeter
Tied sales force	Big-4 life largest in Japan; foreign affiliates run lifeplanner / FA models	JA group local cooperatives sell JA共済; labour-union channels sell Zenrosai
Bancassurance	Major channel for foreign-currency annuity and single-premium savings — see[[insurance/bancassurance-economics-japan	bancassurance economics Japan]]and[[insurance/japan-bancassurance-distribution-overlay-matrix
Independent agency (代理店)	Major channel for non-life and selected life;[[insurance/insurance-agency-and-brokerage-japan	agency / brokerage Japan]]
Internet / direct	[[insurance/internet-life-insurance-business-model	Internet life model]]; online big-3 auto
Cooperative store-front	Not applicable	Local JA branch, CO・OP store, prefectural cooperative federation desk, labour-union office
Workplace / employer	Big-4 group-life payroll deduction	Labour-union payroll deduction at Zenrosai; employer-membership at COOP共済

Surplus / dividend distribution mechanics

Mechanic	FSA commercial insurance	Kyosai
Headline distribution to customer	Policyholder dividend (mutual life) or product credit; shareholder dividend at listed holdco	割戻金 (warimodoshi-kin) to members
Frequency	Annual at most mutuals	Annual at federations
Tax character	Defined under tax code	Generally treated as return of premium
Basis of computation	Mortality / morbidity / interest / expense margins	Mortality / interest / expense margins under cooperative-law framework
Disclosure	Integrated report, mid-term plan	Federation annual report
Constraint	FSA solvency adequacy and surplus management	Cooperative-law surplus distribution rules; sector regulator oversight

Special perimeter notes

Note	Detail
Kampo Life dual regime	[[life-insurers/kampo-life
Small-amount short-term carrier	Inside the FSA perimeter but under a separate light-touch licence with low-coverage / short-tenor limits. Many niche specialty carriers operate here.
Foreign-life affiliate sub-perimeter	Inside the FSA perimeter as licensed life insurance companies. See[[insurance/foreign-life-affiliate-japan-positioning
Kyosai-equivalent specialty pools	Several industry-specific cooperative pools exist outside the federations listed above, governed by sector laws. They sit in the kyosai perimeter and are supervised by the relevant sector regulator.
自家共済 (self-insurance cooperative)	Some employer / industry self-insurance pools operate under cooperative laws; these sit outside the FSA perimeter.

Comparative scale (conceptual)

Federation / set	Conceptual scale signal
FSA life big-4	Dominant on individual life and group life by reserves
FSA non-life big-3	Dominant on voluntary auto and commercial fire / casualty by premium
Foreign-life affiliates inside FSA perimeter	Dominant on cancer (Aflac), strong on protection (Prudential / Manulife / AIA / AXA)
Online life inside FSA perimeter	Small but growing on yen term protection
Kampo Life	Large legacy life book; supervised under post-privatization arrangement
JA共済 Zenkyoren	Largest kyosai federation by reserves; significant share in farm-area auto and building
Zenrosai / Kokumin Kyosai coop	Large nationwide cooperative federation on simple life / fire / accident
Kenmin-kyosai	Wide consumer reach at very low flat-premium tiers
COOP mutual aid	Wide CO・OP-member reach on simple cover
Zenjikyo	Sector-specific commercial-vehicle pool

Historical and structural context

The two-perimeter structure reflects a deliberate postwar policy choice:

Postwar agricultural cooperative law (1947) created the JA cooperative system with its own insurance / common-pool function. JA共済 emerged as the agriculture-sector cooperative federation under MAFF.
Consumer Livelihood Cooperatives Act (1948) created the legal foundation for consumer cooperatives, including Zenrosai (labour cooperative federation) and the consumer-cooperative federations that later spawned Kenmin-kyosai and COOP共済.
Insurance Business Act (1995 major revision) modernised the FSA-perimeter insurance regulation, separating life and non-life carriers, formalising the small-amount short-term carrier category, and laying the foundation for the post-1996 insurance reforms.
2003–2007 demutualization / listing wave movedDai-ichi Lifefrom mutual to listed holdco; other big-4 mutuals retained mutual form. Kyosai federations remained cooperative federations throughout.
2007 Japan Post privatization turned the postal life insurance arm intoKampo Lifeunder the Japan Post group, inside the FSA perimeter but with special-law constraints. The cooperative perimeter remained untouched.
2010 Postal Insurance Business Reform Act further codified the Kampo Life relationship with Japan Post Bank and the FSA-regulated insurance framework.
2025 FSA ESR rollout replaced the traditional solvency-margin ratio with the economic-value-based ESR as the headline capital metric for FSA-regulated insurers. Kyosai federations are not subject to ESR.
Kyosai reform conversations periodically debate whether large kyosai federations should be brought under the Insurance Business Act or under a parallel FSA-style capital regime. The status quo retains the parallel perimeter, with sector regulators continuing to supervise.

Decision use

Use this perimeter matrix when reading Japanese household or corporate risk-coverage choices that mix FSA and kyosai products. Practical analytical questions:

Solvency backstop comparison. FSA-regulated insurance policies are backed by the Policyholder Protection Corporation up to defined recovery ratios. Kyosai cover relies on federation reserves and sector-regulator oversight, not the commercial PPC backstop. The two are not directly substitutable on insolvency-resilience grounds.
Tax deduction limit interaction. A household with both FSA life-insurance premium and kyosai life-style premium uses the same 生命保険料控除 limit. Doubling up policies does not double the deduction. See NTA guidance for the per-category cap.
Premium-rate comparability. A JA共済 building cover and a big-3 commercial fire policy may look similar at the customer level. Underlying actuarial bases, reinsurance backing, and reserves differ. Like-for-like rate comparison requires reading the cover schedule and the exclusion list.
Reinsurance and catastrophe layering.The non-life big-three reinsurance / cat matrixdocuments the commercial-perimeter reinsurance program. JA共済 and other kyosai federations have separate reinsurance arrangements; the household earthquake scheme has a public-private retrocession that flows throughJapan Earthquake Reinsurancefor FSA-perimeter policies — seethe earthquake insurance public-private scheme.
Channel exclusivity. Some bancassurance and lifeplanner channels are FSA-perimeter only. The kyosai perimeter relies on cooperative-branch and labour-union-channel distribution. Seethe bancassurance distribution overlay matrixfor the FSA-perimeter bancassurance map.
Conduct rules. FSA Solicitation Rules apply to FSA-perimeter sales (including the elderly-customer suitability and foreign-currency-product explanation regime). Kyosai solicitation runs under cooperative-law conduct rules. The customer-protection language differs.

Boundary cases / caveats

Numbers are conceptual. Market shares, surplus ratios, reserve adequacy, and tax-deduction limits change with statute and disclosure cycle. Sources are FSA, MAFF, MHLW, federation annual reports, NTA, and the Seiho / Sonpo associations.
Membership gate strength varies. “Cooperative member” can mean genuine farm-area / labour-union membership or a one-off small membership fee paid at the point of purchase. The legal effect of membership is real; the practical access barrier is light for several federations.
Kampo Life is a special FSA-perimeter case. Inside the Insurance Business Act regime but with post-privatization constraints on product approval and on the Japan Post Bank tie-up. Readthe Kampo entryseparately.
Small-amount short-term carriers. Inside the FSA perimeter but under a separate light-touch regime with low-coverage / short-tenor limits. They are not directly comparable to big-4 life or big-3 non-life carriers.
Self-insurance cooperatives (自家共済). Some employer / industry pools sit outside both the FSA and the kyosai-federation perimeters described here; they are governed by sector cooperative laws and supervised by sector regulators.
Cross-line product mixing. A household may hold FSA-perimeter cancer cover with Aflac, FSA-perimeter auto with Sony Insurance, kyosai building cover with JA共済, and Kenmin-kyosai accident cover simultaneously. Each policy sits under its own regulator and its own consumer-protection regime.
Future reform. Periodic policy conversations debate harmonising the kyosai perimeter with FSA regulation. The matrix above reflects the current two-perimeter status quo.
Capital metric comparability. ESR (FSA) and cooperative-reserves adequacy (kyosai) are not directly comparable. Headline-ratio comparisons across the two perimeters are misleading.
Industry association map. Seiho (life) and Sonpo (non-life) cover the FSA perimeter. The kyosai federations have their own internal associations and federation-level coordinating bodies; they do not participate in the Seiho / Sonpo industry data on the same basis as FSA carriers.

Sources

FSA: Insurance Business Act and regulated entities.
FSA: Economic-value-based solvency regulation hub.
MAFF: Agricultural Cooperatives and JA Mutual Aid guidance.
MHLW: Consumer Livelihood Cooperatives guidance (Consumer Livelihood Cooperatives).
JA Mutual Aid: Federation site.
Zenrosai / Kokumin Kyosai coop: Federation site.
National Federation of Consumers’ Cooperatives / Prefectural Mutual Aid: Federation site.
COOP Mutual Aid: Federation site.
Zenjikyo: Federation site / sector cooperative federation publications.
Life Insurance Association of Japan (Seiho): member-company list.
General Insurance Association of Japan (Sonpo): industry overview.
NTA: Income Tax Code overview.