Is the commuting allowance included in standard wage calculation?

Yes. Even though commuting allowances enjoy income tax exemption, the full value is legally considered remuneration for social insurance purposes.

When does the updated insurance premium appear on your payslip?

Updated rates apply to the September contribution month, typically deducted on October payslips for companies deducting insurance in arrears.

JapanUpdated for 2026Finance

Japan Social Insurance Standard Monthly Wage Calculator 2026 (Hyoujun Houshuu)

Calculate your statutory Standard Monthly Remuneration (Hyoujun Houshuu Getsugaku) based on April, May, and June payroll earnings under the annual Teiji Kettei review.

Salaries & Monthly Wages Payroll & Deductions Social Security & Pension

Calculated Result

Determined Standard Monthly Remuneration

¥360,000

Monthly Employee Social Insurance

¥50,904

Calculator Inputs

April Gross Pay (Includes Overtime/Commute)

Quick select:

May Gross Pay (Includes Overtime/Commute)

Quick select:

June Gross Pay (Includes Overtime/Commute)

Quick select:

Determined Standard Monthly Remuneration

¥360,000

Monthly Employee Social Insurance

¥50,904

3-Month Payroll Average

¥360,000

Annual Social Deductions Total

¥610,848

Health Insurance (Employee)

¥17,964

Employees' Pension (9.15%)

¥32,940

This standard remuneration level applies to all payroll deductions from September to next August.

Monthly Insurance Breakdown

Health Insurance (Employee)

¥17,964(35%)

Employees' Pension (9.15%)

¥32,940(65%)

Calculated under Health Insurance Act Art. 41 and Employees' Pension Act Art. 21. Standard monthly grades apply from September through the following August.

This calculator is a mathematical model for general financial estimation, planning, and educational guidance. Results depend on your inputs and standard formulas, and do not constitute binding financial, tax, or investment advice. Always consult a qualified professional before making financial decisions.

Official Statute: 健康保険法第41条及び厚生年金保険法第21条 (定時決定・4月5月6月支払報酬による標準報酬月額の算定)Last Verified: 2026-09-03

Calculation Methodology

Standard Wage Grade determined by averaging gross earnings (salary + overtime + commuting allowance) paid in April, May, and June.

Frequently Asked Questions

Under the statutory Teiji Kettei regular decision system, average earnings in April, May, and June lock in your social insurance contribution bracket for the entire year from September through August.

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Japan

Japan Social Insurance Standard Monthly Wage Calculator 2026 (Hyoujun Houshuu)

Calculator Inputs

Monthly Insurance Breakdown

Calculation Methodology

Frequently Asked Questions

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