Japan Company Annual Compliance Requirements

Overview

Running a company in Japan requires compliance with a range of annual filing, reporting, and renewal obligations across multiple government agencies. Missing deadlines can result in penalties, additional tax assessments, and in extreme cases, administrative dissolution of the company. This guide covers the key compliance requirements that every Japanese company must manage throughout the year.

The obligations described here apply to both KK (株式会社) and GK (合同会社) entities, though certain governance requirements differ between the two structures. Companies with employees have additional obligations related to social insurance and withholding tax.

Corporate Tax Filing

Filing Deadline

Japanese companies must file their annual corporate tax returns within 2 months after the end of their fiscal year. For example, a company with a March 31 fiscal year end must file by May 31. If the deadline falls on a weekend or holiday, it is extended to the next business day.

Extension to 3 Months

Companies can apply for a one-month extension of the filing deadline (to 3 months after fiscal year end) by submitting an application to the tax office. This is common for companies that need additional time for audits or consolidated reporting. However, the tax payment deadline is not extended — any tax owed must still be estimated and paid by the original 2-month deadline, or interest charges apply.

Tax Returns Required

Consumption Tax Filing (消費税)

Companies that are registered as consumption tax (消費税) taxpayers must file an annual consumption tax return. The filing deadline is the same as the corporate tax return: 2 months after the fiscal year end.

Who Must File

• Companies with taxable sales exceeding ¥10 million in the base period (generally 2 fiscal years prior) are required to file
• Newly formed companies with stated capital of ¥10 million or more are consumption tax taxpayers from inception
• Companies that have voluntarily elected to be consumption tax taxpayers
• Companies registered under the Invoice System (インボイス制度), which has been in effect since October 2023

Invoice System (インボイス制度)

Since October 2023, Japan has operated a qualified invoice system for consumption tax. Businesses that issue invoices to other businesses generally need to be registered as Qualified Invoice Issuers (適格請求書発行事業者) to allow their customers to claim input tax credits. Registration requires the company to be a consumption tax taxpayer.

Interim Payments

Companies with annual consumption tax liability exceeding certain thresholds must make interim payments. The frequency depends on the amount: quarterly for liabilities over ¥480,000, monthly for liabilities over ¥4.8 million.

Social Insurance Obligations

算定基礎届 (Standard Remuneration Report) — July

Every July, companies must submit the Standard Remuneration Determination Report (算定基礎届, Santei Kiso Todoke) to the Japan Pension Service. This report recalculates each employee's standard monthly remuneration based on their actual compensation from April through June. The updated standard remuneration determines social insurance premium amounts for the following year (September through August).

年度更新 (Annual Labor Insurance Update) — June to July

Between June 1 and July 10, companies must submit the Labor Insurance Annual Update (年度更新, Nendo Koshin). This involves settling the prior year's labor insurance premiums (workers' compensation and employment insurance) based on actual wages paid during the year, and paying the estimated premiums for the current year.

Monthly Obligations

• Social insurance premiums: Withheld from employee salaries and matched by the employer, paid monthly to the Japan Pension Service by the end of the following month
• Employee additions and departures: Must be reported to the Japan Pension Service and Hello Work within 5 days of the change

Year-End Adjustment (年末調整) — December

The year-end adjustment (年末調整, Nenmatsu Chosei) is an employer's obligation to reconcile the income tax withheld from employees' salaries throughout the year with their actual annual tax liability. It must be completed by the end of December and affects the final payroll of the year.

• Collect deduction certificates from employees (insurance premiums, mortgage interest, dependent deductions)
• Calculate the actual annual income tax for each employee
• Refund over-withheld tax or collect under-withheld amounts through the December or January payroll
• Issue withholding tax certificates (源泉徴収票) to employees by January 31

Withholding Tax Summary (法定調書) — January

By January 31 each year, companies must submit the Statutory Report Summary (法定調書合計表, Hotei Chosho Gokeihyo) and individual statutory reports (法定調書) to the tax office. These reports detail payments made during the prior calendar year that are subject to withholding tax, including:

• Employee salaries and wages (giving rise to the 源泉徴収票)
• Retirement allowances
• Professional fees (to lawyers, tax accountants, consultants, etc.)
• Rent payments for real estate
• Dividends and interest payments

At the same time, companies must submit the Summary of Employees' Earnings (給与支払報告書) to the relevant municipal governments, which is used to calculate employees' residential tax for the following fiscal year.

Director Term Renewal (KK Only)

Directors of a KK (株式会社) serve for fixed terms. For non-public companies (companies with share transfer restrictions), director terms can be set at up to 10 years. When a director's term expires, the company must either reappoint the director or appoint a new one, and file the change with the Legal Affairs Bureau.

GKs (合同会社) do not have director term limits, so this obligation does not apply. However, GKs must still file registry changes when members or representative members change.

Registry Update Obligations

Certain changes to the company's registration details must be filed with the Legal Affairs Bureau within 2 weeks of the change occurring. Failure to file within this period can result in a fine of up to ¥1 million (過料). Changes that require registry filing include:

• Change of company name (商号変更)
• Change of registered address (本店移転)
• Change of business purposes (目的変更)
• Change of directors or representative directors
• Changes to stated capital
• Amendments to articles of incorporation (for items reflected in the registry)
• Director term renewal (reappointment)

Annual Compliance Calendar

The following calendar assumes a March 31 fiscal year end, which is the most common in Japan. Adjust deadlines according to your actual fiscal year end.

Penalties for Non-Compliance

Late Tax Filing

• Late filing penalty (無申告加算税): 15% of the tax amount (20% for amounts exceeding ¥500,000) if the return is filed after the deadline. Reduced to 5% if filed voluntarily before the tax office contacts you.
• Late payment penalty (延滞税): Interest calculated daily on unpaid tax amounts. The rate varies by year but is approximately 2.4% for the first 2 months and 8.7% thereafter.
• Underreporting penalty (過少申告加算税): 10% of the additional tax if the original return underreported income (15% for amounts exceeding certain thresholds).

Registry Filing Delays

• Fine (過料): Up to ¥1,000,000 for failing to file required registry changes within the statutory 2-week period. In practice, fines are typically imposed at lower amounts, but they are assessed at the court's discretion.
• Administrative dissolution: KKs that fail to file any registry update for 12 years may be dissolved by the Legal Affairs Bureau.

Social Insurance Non-Compliance

• Back-payment of premiums: Companies found to be non-compliant with social insurance enrollment may be required to pay up to 2 years of back premiums for all eligible employees.
• Criminal penalties: Willful failure to enroll employees in social insurance can result in fines of up to ¥500,000 or imprisonment of up to 6 months.