Formula
所得税 = 課税所得 × 税率 - 控除額。復興特別所得税は所得税額の2.1%です。
Japan localized calculator
日本 所得税・住民税 計算
課税所得から日本の所得税、復興特別所得税、住民税の概算を計算します。
Main result
Calculating 国税庁 所得税の速算表、財務省 所得税構造資料.계산 기준과 공식 출처
計算基準日: 2026年5月15日。国税庁の所得税速算表を参考にした概算です。
공식 기준은 수시로 바뀔 수 있으므로 실제 신고, 계약, 대출, 진료, 납부 전에는 반드시 해당 기관의 최신 자료를 확인하세요.
Formula and interpretation
How to read it
給与所得控除、基礎控除、扶養控除などを差し引いた後の課税所得を入力する概算ツールです。
These calculator results and explanations are for general information and rough estimation only. They are not legal, tax, accounting, investment, mortgage, payroll, insurance, immigration, medical or other professional advice. This site is not a government agency, law firm, accounting firm, tax adviser, financial adviser, broker, lender or payroll provider, and no professional or adviser-client relationship is created by using it.
Rules, rates, thresholds, deductions, credits, fees, exchange rates and local requirements can change and may differ by country, state, city, institution, transaction date and personal facts. We do not guarantee that the calculations are accurate, complete, current or suitable for your situation. To the fullest extent permitted by applicable law, we disclaim liability for losses, damages, penalties, interest, taxes, claims or disputes arising from use of, or reliance on, this site.
日本語: この計算結果は一般的な参考情報であり、法律・税務・会計・金融・住宅ローン等の専門的助言ではありません。申告や契約前に公的機関または有資格専門家へ確認してください。