Japanese payroll centres on two systems that between them keep most employees out of the tax office entirely. Income tax is withheld at source by the employer and trued up in a year-end adjustment, so a typical single-employer worker never files a return. Alongside it run four statutory insurance schemes, workers' accident compensation, employment insurance, health insurance and employees' pension, each with defined employer and employee shares and enrollment paperwork due within days of hiring. For a foreign company the machinery is precise and stable; the question is only who operates it, your own Japanese entity or an employer of record.
Withholding at source and the year-end adjustment
Japanese employers withhold income tax from every salary payment. At year end, the employer runs the year-end adjustment, reconciling the tax actually withheld against the employee's final liability and refunding or collecting the difference through the December payroll. The National Tax Agency's guidance shows the effect: an employee whose salary all comes from a single payer, fully subject to withholding at source, generally has no return to file, and self-filing between 16 February and 15 March is reserved for cases like multiple income sources or very high salaries. For the employer this makes December the heaviest payroll month of the year, collecting employees' deduction declarations for insurance premiums, dependants and housing loans and processing them correctly.
The four statutory insurances and who pays what
JETRO's investor guidance lays out the four schemes. Workers' accident compensation insurance is employer-funded entirely, at rates from 0.25% to 8.8% of pay depending on the industry. Employment insurance splits 0.95% employer, 0.6% employee for most sectors, covering workers on 20 or more hours a week with 31 or more days of expected employment. Health insurance under the main association scheme runs at 5.00% each for employer and employee, rising to 5.91% each from age 40 when nursing care insurance attaches. Employees' pension insurance is 18.3% of standard remuneration, split evenly at 9.15% each, for employees under 70. Enrollment notifications are due within days of hiring, and larger corporations must file electronically.
What this adds to the cost of a hire
Adding the employer shares, pension at 9.15%, health at 5.00% or 5.91%, employment insurance at 0.95% and an industry-dependent accident premium, a Japanese employer's statutory on-cost lands around 15% to 16% of pay for most office roles, before any company benefits. Contributions are calculated against standardised remuneration bands rather than raw salary, and bonus payments attract contributions as well, so annualised cost depends on pay structure, not just the monthly figure. Budgeting a Japan hire at gross salary alone therefore understates the real cost meaningfully, and any EOR or payroll quote should show these four lines explicitly rather than folding them into a single management fee.
Running it without a Japanese entity
The withholding agent and the insurance enrollments belong to a registered Japanese employer, so a foreign company cannot operate this system remotely. With a subsidiary or branch in place, a local payroll provider or shakai hoken labour consultant runs the monthly cycle and the December adjustment. Without an entity, an employer of record employs the person through its own Japanese entity, carries the enrollments and withholding as legal employer, and invoices gross cost plus the statutory on-costs plus its fee. When comparing EOR quotes for Japan, check that the four insurance lines appear at the statutory rates and that the year-end adjustment is included in scope, not billed as an extra. Employment contracts and plan documents control; nothing on this page is legal or tax advice.
Questions people ask about payroll japan
Do employees in Japan file their own tax returns?
Mostly no. With a single employer and full withholding at source, the employer's year-end adjustment settles the liability, and no return is needed except in cases like multiple payers or very high salaries.
What are the four statutory insurances?
Workers' accident compensation (employer-funded, 0.25% to 8.8% by industry), employment insurance (0.95% employer, 0.6% employee), health insurance (5.00% each, 5.91% each from age 40) and employees' pension (18.3% split evenly at 9.15% each).
How much does an employer pay on top of salary in Japan?
Roughly 15% to 16% of pay in statutory contributions for most office roles, combining the employer shares of pension, health, employment insurance and the industry-rated accident premium.
Can a foreign company run Japanese payroll without an entity?
No; withholding and insurance enrollments require a registered Japanese employer. The alternatives are establishing an entity with a local payroll provider, or hiring through an employer of record.