Monthly Topics for December 2025

Please find this month’s topics below. We hope they will be useful to you.


▼Taxation
Deduction for Life Insurance Premium Applicable to 2026 (Reiwa 8)

As part of measures to support households with children, the maximum deduction for life insurance premiums paid for new life insurance contracts will be increased to 60,000 yen for taxpayers who have a dependent under 23 years old for 2026.

【Amounts for the life insurance premium deduction after the amendment】

Except as noted below (same as current)
Amount of insurance premium paid(A)Amount of deduction
Up to 20,000yenAmount of (A)
20,001yen to 40,000yen(A)×1/2+10,000yen
40,001yen to 80,000yen(A)×1/4+20,000yen
80,001yen upwards40,000yen maximum
Taxpayers who have a dependent under 23 years old
Amount of insurance premium paid(A)Amount of deduction
Up to 30,000yenAmount of (A)
30,001yen to 60,000yen(A)×1/2+15,000yen
60,001yen to 120,000yen(A)×1/4+30,000yen
120,001yen upwards60,000yen maximum

The total maximum amount applicable to the Deduction for life insurance premium, individual annuity insurance premium and long-term medical care insurance premium is 120,000 yen (unchanged from the current rules).

▼Labor Management
Revision of the Non-Taxable Limit for Commuting Allowances

A Cabinet Order partially revising the Enforcement Order of the Income Tax Act was promulgated on November 19, 2025, raising the non-taxable limit for commuting allowances paid to salaried employees who use automobiles or other means of transportation for commuting.

This amendment took effect on November 20, 2025, and applies to commuting allowances payable on or after April 1, 2025.

Therefore, if commuting allowances exceeding the pre-amendment non-taxable limit were paid prior to the amendment, adjustments may be necessary during the year-end tax adjustment for the 2025 tax year.

Source: National Tax Agency JAPAN

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