April 2026 Japan Health Insurance Surcharge: How Much MORE Foreign Workers Pay (Child & Childcare Support Levy 子ども・子育て支援金)

By Yamada · Chiba, Japan · May 2026

If you got your April 2026 paycheck and thought "wait, why is the health insurance bigger?" — you are not alone. From April 2026, every health insurance subscriber in Japan pays a new surcharge called the Child and Child-rearing Support Contribution (子ども・子育て支援金).

It does not matter if you have children or not. It does not matter if you are Japanese or foreign. Everyone pays.

In this guide:

• What is the new fee
• How much YOU will pay (by salary)
• Why people call it the "singles tax"
• How it changes through 2028
• Real examples for engineers, students, families
• How to check your paystub

Table of Contents

1. What Is the Child & Childcare Support Levy?

The Child and Child-rearing Support Contribution (子ども・子育て支援金, kodomo kosodate shienkin) is a new fee added to your monthly health insurance premium starting April 2026.

The Japanese government wants to fund:

• Bigger child allowance (児童手当) for all families
• Free standard childbirth (no co-pay for normal delivery)
• "Childcare for All" daycare program
• Maternity benefits

Total funding goal:

• FY2026: about ¥600 billion
• FY2027: about ¥800 billion
• FY2028: about ¥1 trillion (full implementation)

Source: Children and Families Agency (こども家庭庁)

2. Who Pays?

Everyone who has any kind of Japanese public health insurance:

• Company employees (健康保険組合 or 協会けんぽ)
• National Health Insurance (国民健康保険, 国保) - self-employed, students, freelancers
• Late-stage elderly system (75+ years)

That is about 100 million people in Japan.

Foreigners: YES, you also pay. If you have a residence card and any health insurance, you pay. No exceptions for foreigners.

3. How Much Will I Pay? (Full Salary Table)

The fee depends on your salary and insurance type. Here are the official estimates from the Children and Families Agency.

For Company Employees (Shaho 社保):

Important: Your company pays half. So if your salary is ¥6 million, YOU pay ¥575 and your company pays ¥575. The ¥575 is YOUR side only.

For National Health Insurance (Kokuho 国保):

This is for self-employed, freelancers, students, and unemployed. You pay 100% yourself.

Varies by city. Tokyo and big cities charge more.

4. Why "Singles Tax"?

On Japanese social media (Twitter/X), this fee is being called "singles tax (独身税)."

Why? Because:

• People with children get bigger child allowances (児童手当)
• People without children just pay, get nothing back
• Singles, childless couples, gay couples, and people in their 20s/30s feel they pay for others

This is unfair to many. But the government's view is: "Japan's birthrate is collapsing. Everyone benefits from a future generation of workers."

Yamada honest opinion: Both sides have a point. As a parent in Japan, I appreciate the support. But I also see why my single friends are angry. ¥575/month is small for one person, but ¥6,900/year × 100 million people = serious money.

5. Where Does My Money Go?

The new revenue funds 6 specific programs (set by law):

If you have a child in Japan now, you DO benefit. If you do not, you pay for the system.

6. National Health Insurance (国保) vs Company Insurance (社保)

If you work for a Japanese company:

• You have Shakai Hoken (社保) / Kenpo Kumiai (健保組合)
• Surcharge is deducted from your paycheck
• Company pays half
• You will see a new line on your paystub from April 2026

If you are self-employed, freelancer, or unemployed:

• You have Kokumin Kenko Hoken (国保)
• Surcharge is added to your annual bill
• You pay 100%
• Bill comes from your city office

Student visa holders:

• Most students are on Kokuho (国保)
• The surcharge applies
• It is small (~¥150-¥300/month if income is low)

7. How to Read Your Paystub

Look at your April 2026 paystub. You should see a new line.

Possible names (in Japanese):

• 子ども・子育て支援金 (Kodomo Kosodate Shienkin)
• 子育て支援金
• 支援金
• Often included inside 健康保険料 (health insurance) as a sub-line

If you do not see it explicitly, look at your total health insurance amount. Compare to March 2026. The April number will be slightly higher.

8. Yamada Hack: How to Reduce Your Total Burden

You cannot avoid the surcharge legally. But you can save money elsewhere.

Tip 1: Use Furusato Nozei (ふるさと納税).

This reduces your resident tax. The savings can offset the new surcharge. See our Furusato Nozei tool.

Tip 2: Max your NISA + iDeCo.

Tax-free growth. Long-term wealth offsets the small monthly fee.

Tip 3: Use the new childcare benefits IF you have kids.

• ¥30,000/month from 3rd child
• Free standard childbirth from FY2026
• Free hourly daycare (¥300/hour for parents not working)

Tip 4: For freelancers - consider switching to Shaho.

If you start a company (合同会社, GK), you can join Shakai Hoken and your "company" pays half. See our Company Registration Tutorial.

Tip 5: Check your dependent registration.

If your spouse earns under ¥1,300,000, register them as your dependent. Lower household burden.

9. Real Stories

Carlos (Brazil, Engineer, Salary ¥5,000,000):

Carlos pays ~¥479/month new surcharge. Per year: ¥5,748. He has 2 kids, so he gets ¥30,000/month child allowance. Net benefit: positive.

Sophie (France, Single, English Teacher, Salary ¥4,000,000):

Sophie pays ~¥383/month. Per year: ¥4,596. She has no kids and gets nothing back. She feels the "singles tax" anger but says "okay, it's ¥4,600/year, not a disaster."

Rina (Indonesia, Caregiver, Salary ¥2,500,000):

Rina pays ~¥239/month. Small amount. She sends remittance to family in Surabaya. The new fee reduces her remittance by ¥2,880/year. Not big, but she feels it.

Wei (China, Student, National Health):

Wei pays Kokuho with a part-time job (¥1,200,000/year). His new surcharge is ~¥180/month. He grumbles but pays.

10. FAQ

Q1: I am a foreigner, do I have to pay?

Yes, if you have any Japanese health insurance.

Q2: Can I opt out?

No. Like all health insurance fees in Japan, it is automatic.

Q3: My company hides this in "social insurance." How do I know?

Compare your March 2026 paystub to April 2026. The difference (after tax adjustments) is mostly the new surcharge.

Q4: Will the fee keep going up?

Yes. 2026 is the start. By 2028, it will be roughly 1.7x higher.

Q5: I am leaving Japan in 2027. Do I pay?

Yes, until your last day. Then your insurance stops.

Q6: Will my pension refund (脱退一時金) be reduced?

No. Pension refund is separate from health insurance.

Q7: Does this affect my income tax?

Health insurance premiums (including this surcharge) are deductible from your annual income tax. So your total tax is slightly lower. Small consolation.

Q8: My spouse has no income. Do they pay?

If they are your registered dependent, no. They are covered by your insurance.

Q9: What if I get fired or quit?

You will switch from Shaho to Kokuho. Both have the new surcharge.

Q10: Where do I see the official rate?

Children and Families Agency (こども家庭庁): https://www.cfa.go.jp/

11. Official References

• Children and Families Agency (こども家庭庁): https://www.cfa.go.jp/
• Ministry of Health, Labour and Welfare (厚生労働省): https://www.mhlw.go.jp/
• Japan Health Insurance Association (協会けんぽ): https://www.kyoukaikenpo.or.jp/

Related EasyNihon Tools

• Health Insurance Surcharge Calculator (coming soon)
• Paycheck Decoder - understand every line of your payslip
• Furusato Nozei Calculator - reduce your tax
• Child Support Hub - all family benefits

You cannot avoid the new fee. But you can make sure you USE the benefits if you have kids. And if you do not have kids, use Furusato Nozei and NISA to offset. Knowledge saves money.

Stay informed, stay strong. — Yamada