https://productivity-works.com/ja/tags/%E7%A8%8E%E9%87%91/Recent content in 税金 on Productivity Workshttps://productivity-works.com/images/default-og.pnghttps://productivity-works.com/images/default-og.pngHugojaThu, 14 May 2026 00:00:00 +0000https://productivity-works.com/ja/posts/nisa-fx-zeikin-hikaku/Thu, 14 May 2026 00:00:00 +0000https://productivity-works.com/ja/posts/nisa-fx-zeikin-hikaku/NISAとFXは併用可能。ただし税金の仕組みが全く異なります。非課税のNISAと申告分離課税のFX、それぞれの特徴と使い分けを解説。https://productivity-works.com/ja/posts/fx-swap-point-zeikin/Wed, 13 May 2026 00:00:00 +0000https://productivity-works.com/ja/posts/fx-swap-point-zeikin/FXのスワップポイントも課税対象。決済時課税と未決済課税の違い、年間利益の計算方法、確定申告の手順を解説。https://productivity-works.com/ja/posts/fx-rieki-20man-kakuteishinkoku/Tue, 12 May 2026 00:00:00 +0000https://productivity-works.com/ja/posts/fx-rieki-20man-kakuteishinkoku/FXで利益が20万円を超えた会社員は確定申告が必要です。申告分離課税20.315%の計算方法と、実際の税額シミュレーションを解説。https://productivity-works.com/ja/tools/fukugyou-tax-calculator/Tue, 30 Sep 2025 00:00:00 +0000https://productivity-works.com/ja/tools/fukugyou-tax-calculator/副業の税金を自動計算。本業年収と副業収入を入力するだけで、追加税額・確定申告の要否・手取り額がわかる無料シミュレーター。https://productivity-works.com/ja/tools/salary-tedori-calculator/Sun, 15 Jun 2025 00:00:00 +0000https://productivity-works.com/ja/tools/salary-tedori-calculator/年収・月収から手取り額を自動計算。所得税・住民税・社会保険料の内訳も表示。転職・副業の年収比較に便利な無料ツール。