Health Insurance and Pension for Freelancers
Health Insurance and Pension for Freelancers is the coverage switch every newly registered sole proprietor in Japan must complete within days of leaving employee status.12 Miss the filing windows and the system bills you retroactively; misunderstand the premium math and the first freelance year delivers a genuine cost shock.
Procedures, fees, and requirements can change. Confirm current details at the Japan Pension Service and your local municipal office. This article is general information, not legal, tax, or pension advice; for your specific case, consult a licensed shakai hoken roumushi (社会保険労務士, labor and social insurance attorney) for coverage classification and exemption strategy, or a tax accountant (税理士, zeirishi) where premium deductibility and retirement-contribution planning interact with your filing.
Overview
Leaving a company job ends two employer-bundled schemes at once: 健康保険 (kenkou hoken, "health insurance") through Employees Health Insurance, and 厚生年金 (kousei nenkin, "Employees Pension Insurance") through the employer track.2 As a registered sole proprietor you replace them with two self-paid schemes: 国民健康保険 (kokumin kenkou hoken, "National Health Insurance", NHI) run by your municipality, and 国民年金 (kokumin nenkin, "National Pension") run nationally through the Japan Pension Service.13
This article covers the exit sequence, how each freelance scheme works, why the first year costs more than newcomers expect, and the voluntary top-ups that restore retirement parity. It applies to foreign residents aged 20 to 59 moving from employee coverage to self-employed 個人事業主 (kojin jigyou nushi, "sole proprietor") status; specific visas such as medical stay and long sightseeing stay sit outside pension coverage.1
NHI rates, installment counts, and reduction programs vary by municipality and are revised yearly, while pension figures are national.34 Confirm every premium figure with your own ward or city office before budgeting.
What Changes on Day One Out of Employment
Employee coverage is compulsory rather than optional, and contributions are shared between employer and worker by law.2 The day that arrangement ends, both halves of the bill become yours. The following diagram shows the full transition in one picture.
Leaving Employees Health Insurance
Your employer handles enrollment in Employees Health Insurance and Employees Pension within 5 days of hiring, and files the corresponding loss-of-eligibility when you leave.2 Request the Certificate of Loss of Social Insurance Eligibility from your employer before your last day; the municipal office needs it to process your NHI enrollment.3 Your part starts immediately: enroll in NHI at your municipal office rather than waiting for anyone to prompt you.3
One alternative exists for some leavers: voluntary continuation of the former employer scheme for up to 2 years at the full premium with no employer share, which is sometimes cheaper than NHI at moderate prior salaries.3 The application deadline is tight, so compare both options before your last day at work.5
Address registration alone does not enroll you in NHI. It is a separate filing at the NHI counter, due within 14 days of becoming eligible (as of 2026-03; confirm current deadlines with your municipal office).34 Bring your residence card and passport and file the enrollment form; the insurance credential is issued through that filing.34
Leaving Employees Pension
Pension follows the same split. A departing employee moves from Category 2 to Category 1, and Category 2 enrollment had been fully automatic through the employer with no procedure of your own.1 Category 1 is the reverse: you register yourself at the municipal office of your residence within 14 days by submitting the Category 1 enrollment application.1
Category 1 covers self-employed persons, students, agricultural, forestry and fishery workers, and unemployed persons aged 20 to 59 who are neither Category 2 nor Category 3 insured.1 Foreign nationals with specific visas such as medical stay or long sightseeing stay are not subject to Category 1 or Category 3 coverage.1
National Health Insurance for Freelancers
NHI is the municipal-run scheme for everyone outside employer coverage: freelancers, students, part-timers below the enrollment threshold, and people between jobs.3 The medical coverage itself matches the employee scheme, with the standard 30 percent copay for ages 6 to 69.4
Enrolling at the Ward Office
File at the NHI counter of your ward or city office within 14 days of leaving employee coverage.34 Premiums are charged retroactively to the date you became eligible, up to two years back, so delaying the visit does not save money; it builds a larger lump-sum bill later.36
New arrivals with no prior Japanese income record are generally assessed on an estimated or minimum basis for the first year (as of 2026-03).34 Filing a zero-income or low-income declaration where the office requires one matters, since undeclared income can block automatic reductions.5
The ward office will not always prompt you for both. Address registration, NHI enrollment, and Category 1 pension registration are three distinct filings, and completing one does not complete the others. Ask for each counter by name before you leave the building.
How Premiums Are Calculated
NHI premiums combine an income levy on prior-year income with flat per-capita and per-household levies, in three portions: basic medical, elderly support, and long-term care for members aged 40 to 64 (as of 2026-06; confirm current rates with your municipal office).47 Rates are set independently by each city or ward and revised every year, so no national rate table exists.4
| Portion | Basis | As of | Notes |
|---|---|---|---|
| Basic medical | Prior-year income levy plus per-capita levy | 2026-067 | Largest of the three portions |
| Elderly support | Prior-year income levy plus per-capita levy | 2026-067 | Funds late-stage elderly insurance |
| Long-term care (ages 40 to 64) | Prior-year income levy plus per-capita levy | 2026-067 | Applies only from age 40 |
The income levy is commonly computed on prior-year income minus a basic deduction of 430,000 yen, times the municipal rate (as of 2026-06).7 The total annual household bill is capped: the cap stood at 1,090,000 yen in FY2025 (medical 660,000, support 260,000, care 170,000 yen per the Ministry of Health, Labour and Welfare schedule) and rose to 1,100,000 yen from April 2026 with the medical portion moving from 660,000 to 670,000 yen (as of 2026-04; confirm the current cap with your municipal office).78
For scale, Tokyo worked examples put a single resident on about 3,000,000 yen annual income at roughly 215,000 to 331,000 yen per year depending on ward and income definition, around 18,000 to 27,600 yen per month (as of FY2025 rates).45 Explainer estimates commonly place NHI at roughly 5 to 10 percent of annual income (as of 2026-03).3 Two structural facts make NHI heavier than the payslip deduction it replaces: nobody splits the bill with you, and each person enrolls individually with no dependent coverage.3
National Pension for Freelancers
The National Pension is the flat-rate base tier. Every Category 1 insured person pays the same monthly amount regardless of income, and that amount is reset each fiscal year.9
Paying the Flat Monthly Premium
The FY2026 contribution is 17,920 yen per month, due by the end of the following month (as of 2026-04; confirm current figures with the Japan Pension Service).910 That is 215,040 yen per year before any prepayment discount (as of 2026-04).9
| Item | Amount | As of | Notes |
|---|---|---|---|
| Monthly premium, FY2026 | 17,920 yen | 2026-049 | Flat rate for all Category 1 insured |
| Annual equivalent | 215,040 yen | 2026-049 | Before prepayment discounts |
| 3/4 exemption, remainder payable | 4,480 yen | 2026-0411 | Application required, yearly |
| Half exemption, remainder payable | 8,960 yen | 2026-0411 | Application required, yearly |
| 1/4 exemption, remainder payable | 13,440 yen | 2026-0411 | Application required, yearly |
Pay through the JPS invoice mailed to you, automatic bank transfer, credit card, a smartphone payment app, or Nenkin Net; bank transfer and credit card need advance registration.9 Advance payment for 6 or 12 months earns a discount; arrange it through your nearest JPS branch office.9
Bank-transfer and credit-card prepayment both earn discounts on top of the convenience. If cash flow allows, the 1-year advance payment is the standard freelancer move. Confirm the current discount schedule with the Japan Pension Service before committing.
A note on conflicting figures: some 2026 expat explainers still cite 16,980 yen or 17,510 yen per month, but the Japan Pension Service English pages updated April 1, 2026 state 17,920 yen for FY2026, and that figure governs this article.910
Exemptions and Deferrals When Income Dips
Contributors in temporary financial difficulty may apply for exemption of contributions, and students may apply for the Special Payment System postponement (as of 2026-04; confirm current thresholds with your municipal office).11 Screening looks at the prior-year income of you, your spouse, and your household head.11
The FY2026 bands run from full exemption down through 3/4, half, and 1/4 exemption with the remainders shown in the table above (as of 2026-04).11 Fail to pay the remainder during a partial-exemption period and the grant converts to plain non-payment.11
Exempted periods still count toward the 10-year qualifying period for the old-age pension, but they lower the eventual benefit amount unless you later make retroactive payments (as of 2026-04).11 Post-April-2009 full-exemption periods count as half of fully paid periods in the benefit math, with partial bands scaled pro rata (as of 2026-04).11 You may retroactively recover exempted periods going back up to 10 years, with indexation applied from the third fiscal year back.11 Each application covers up to one year, so reapply annually at your municipal office.11
The First-Year Cost Shock
The first freelance year combines the worst of both formulas. NHI keys off prior-year income, so your opening bill prices your salaried past rather than your freelance present (as of 2026-03).3 The pension side offers no such lag: the flat 17,920 yen per month starts immediately, adding about 215,040 yen per year on top (as of 2026-04).9
The mechanism behind the shock is the lost employer share. Employee contributions were split evenly between worker and employer and deducted from salary and bonuses.12 Practitioner summaries of the JPS table describe the Employees Pension rate as 18.3 percent of standard monthly remuneration with 9.15 percent each side, so a 300,000 yen monthly salary implied roughly 27,450 yen per month from the employee with the employer matching it (as of 2026-07).1213 As a freelancer you carry the whole load on both schemes with no matching half.212
The most common trap is budgeting NHI from projected freelance revenue. The office bills from last year's assessed income instead, which for a former employee means a full-salary-scale premium landing in the lowest-cash year. Reserve three to six months of premium payments before resigning, or time the switch early in the calendar year so the high-premium window is shorter.
Closing the Retirement Gap
An employee accumulates salary-linked Employees Pension on top of the base tier; a freelancer paying only the flat National Pension retires on the base tier alone.1213 Two voluntary schemes exist to close that gap, and both reduce taxable income, which makes them most valuable once freelance earnings stabilize.14
National Pension Fund
The 国民年金基金 (kokumin nenkin kikin, "National Pension Fund") is a voluntary defined-benefit top-up reserved for people paying National Pension in full.15 If your contributions are exempted or reduced for low income, you cannot join until full payment resumes.1513
Payouts follow a block system with lifetime-annuity and fixed-term options; the lifetime Type A blocks carry a 15-year guarantee payable to survivors to age 80.15 Contributions share one monthly ceiling with iDeCo: 68,000 yen combined under current rules (as of 2026-03; confirm current ceilings with the Ministry of Health, Labour and Welfare).14
iDeCo for the Self-Employed
iDeCo (個人型確定拠出年金, kojin-gata kakutei kyoshutsu nenkin, "individual defined-contribution pension") is the defined-contribution counterpart: you join through a financial institution, choose your own products from 3 to 35 options, and keep the investment result.14 Contributions are fully deductible from taxable income, growth accumulates untaxed, and benefits at age 60 and above follow pension or retirement-income deductions.14
The Category 1 monthly ceiling is currently 68,000 yen minus any National Pension Fund premium or add-on pension amount (as of 2026-03).14 Under the enacted 2025 pension revision, the shared Category 1 ceiling for iDeCo plus the Fund rises to 75,000 yen per month from December 1, 2026, a scheduled change not yet in force at the time of writing (as of 2026-06).16 Premium-exempt National Pension payers cannot join iDeCo at all, so exemption and top-up planning interact directly.14
| Scheme | Ceiling | As of | Notes |
|---|---|---|---|
| iDeCo plus Fund, Category 1 (current) | 68,000 yen/month combined | 2026-0314 | Minus any Fund or add-on amount |
| iDeCo plus Fund, Category 1 (from 2026-12-01) | 75,000 yen/month combined | scheduled 2026-1216 | Enacted 2025 revision |
Because the 68,000 yen ceiling (75,000 yen from December 2026) covers both schemes together, maxing one leaves no room for the other.1416 Contributors who want market upside usually prioritize iDeCo; those who want a guaranteed annuity keep room for Fund blocks. Contributors who cannot use mutual funds inside iDeCo sometimes prefer the Fund for the same deduction.15
Good to know
Enroll within 14 days or pay retroactively anyway
Category 1 pension registration is due within 14 days at your municipal office, and NHI carries the same 14-day municipal deadline.13 NHI premiums backdate to the eligibility date, and late pension registration leaves uncovered months that only narrow recovery windows can fix.611 File both in the first week after your last day of employment.
Your first NHI bill prices your salaried past, not your freelance present
The income levy keys off prior-year income, so a former employee's opening NHI bill reflects the old salary while freelance revenue is still ramping (as of 2026-03).3 The pension adds its flat 17,920 yen per month from day one regardless of income (as of 2026-04).9 Treat the first year as the most expensive, not the cheapest.
NHI has no employer to split the bill and no dependent coverage
Employee health and pension contributions were shared evenly with the employer; NHI and National Pension are fully self-borne.12 NHI also enrolls each household member individually, unlike employee insurance with dependent coverage.3 A freelancer with a non-working spouse pays two full sets of premiums where an employee paid one shared set plus free dependent coverage.
Exemption approval blocks the Pension Fund door
Exemption keeps you qualified for a future pension, but it closes both voluntary top-ups: exempted payers cannot join the National Pension Fund or iDeCo.1415 If retirement parity matters more than short-term relief, compare the reduced-contribution bands against a smaller iDeCo payment before applying for full exemption.
The December 2026 iDeCo limit change rewards checking twice
The Category 1 shared ceiling moves from 68,000 to 75,000 yen per month on December 1, 2026 under the enacted 2025 revision (as of 2026-06).16 Any guide, calculator, or financial-institution page written before that date states the old ceiling. Confirm which ceiling your provider applies before raising contributions near the switchover.
See also
- Tenshoku Procedure: The Job-Change Sequence
- Final Pay and Documents on Exit in Japan
- Blue-Form vs. White-Form Tax Returns
- Client-Side Withholding (Gensen Choshu)
- Registering as a Sole Proprietor (Kojin Jigyounushi)
- Shakai Hoken Overview
References
Hand-off to Agent 4
- Diagrams inserted: 1. Section "What Changes on Day One Out of Employment", graph/flowchart, captures the employee-to-freelancer coverage transition and filing sequence. Other sections are descriptive (premium math, exemption bands, ceiling tables) and better served by tables; deliberate skip.
- Admonitions placed: 4. (1) caution "File NHI and pension enrollment as two separate errands" in Enrolling at the Ward Office; (2) tip "Cut the pension bill with automatic prepayment" in Paying the Flat Monthly Premium; (3) warning "Budget the first year on salary-scale premiums with startup-scale income" in The First-Year Cost Shock; (4) note "Fund and iDeCo share one allowance, so sequence the choice" in iDeCo for the Self-Employed. Plus the standing source-currency notice with professional-advice second sentence per blueprint flag Required.
- Volatile-figure currency notes: each H2 section carries one full-form note on its first volatile figure and short forms after; tables carry As-of columns with one prose currency sentence nearby.
- Known hedges from research: 18.3 percent EPI rate phrased as practitioner summary of the JPS table; NHI formula and 1.1M yen cap carried with as-of dates; prepayment discounts kept qualitative; Fund payout detail kept qualitative.