A Full-Stack Engineer (React / Next.js / TypeScript) earning the median salary of ¥9.1M in Japan takes home approximately ￥6,700,896/year (￥558,408/month) after national income tax, reconstruction surtax, resident tax, and employee social insurance, using 2026 rates.
2026 median salary for each level in Japan, and what it leaves after national income tax, reconstruction surtax, resident tax, and employee social insurance. Single employee, Tokyo standard rates, under 40. 2026 rates.
| Level | Gross / year | Take-home / year | Per month | Effective rate |
|---|---|---|---|---|
| Junior | ￥5,894,000 | ￥4,585,369￥382,114/mo | ￥382,114 | 22.2% |
| Mid-level | ￥8,850,000 | ￥6,516,865￥543,072/mo | ￥543,072 | 26.4% |
| Senior | ￥12,081,000 | ￥8,604,366￥717,031/mo | ￥717,031 | 28.8% |
| Lead / Principal | ￥15,794,000 | ￥10,668,251￥889,021/mo | ￥889,021 | 32.5% |
The biggest pay step is Senior to Lead / Principal: ￥3,713,000 more a year before tax, of which ￥2,063,885 reaches take-home. 44% of that raise goes to national income tax, reconstruction surtax, resident tax, and employee social insurance, against an average 29% on the Senior salary, because the extra pay is taxed at the top of your bands rather than spread across all of them.
Around the headline median, the middle half of Full-Stack Engineer (React / Next.js / TypeScript) salaries in Japan run from ￥8,658,000 to ￥9,488,000 a year, which is ￥6,390,673 to ￥6,936,192 after national income tax, reconstruction surtax, resident tax, and employee social insurance.
The table above uses the Full-Stack Engineer (React / Next.js / TypeScript) median. Enter your own gross salary below for a precise figure.
Annual take-home
￥6,700,896
Monthly take-home
￥558,408
Effective deduction rate
26.6%
National income tax
￥640,600
Reconstruction surtax
2.1% of national income tax
￥13,453
Resident tax
~10% (prefectural + municipal)
￥555,550
Health + pension + employment insurance
￥1,219,502
A Full-Stack Engineer (React / Next.js / TypeScript) earning the median salary of ¥9.1M in Japan takes home approximately ￥6,700,896 per year (￥558,408 per month) after national income tax, reconstruction surtax, resident tax, and employee social insurance, using 2026 rates.
On a median Full-Stack Engineer (React / Next.js / TypeScript) salary of ¥9.1M, the effective deduction rate (national income tax, reconstruction surtax, resident tax, and employee social insurance) is 26.6%, leaving ￥6,700,896 as take-home pay.
A senior Full-Stack Engineer (React / Next.js / TypeScript) in Japan earns a median ￥12,081,000 a year and takes home approximately ￥8,604,366 (￥717,031 per month) after national income tax, reconstruction surtax, resident tax, and employee social insurance, an effective rate of 28.8%.
A junior Full-Stack Engineer (React / Next.js / TypeScript) in Japan earns a median ￥5,894,000 a year and takes home approximately ￥4,585,369 (￥382,114 per month) after national income tax, reconstruction surtax, resident tax, and employee social insurance, an effective rate of 22.2%.
The biggest pay step is Senior to Lead / Principal: ￥3,713,000 more a year before tax, of which ￥2,063,885 reaches take-home. 44% of that raise goes to national income tax, reconstruction surtax, resident tax, and employee social insurance, against an average 29% on the Senior salary, because the extra pay is taxed at the top of your bands rather than spread across all of them.
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