💸 税務工具

🧮 GST 商品服務税計算GST Calculator GST 商品服務税計算Convert between tax-inclusive and tax-exclusive amounts at any GST rate to separate the tax from the base price. Runs locally. 🧾 不含税 = 含税 ÷ (1 + 税率)Vat Inclusive to Exclusive 輸入含税金額與增值税税率，按 不含税=含税÷(1+税率) 將含税價拆分為不含税銷售額與應納税額，用於報銷、入賬時把含税價款還原為不含税收入與税額。Vat Inclusive to Exclusive - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of... 🌐 關税 = 完税價格 × 關税率Customs Duty 進口關税計算器：輸入審定完税價格與關税率，按 關税 = 完税價格×關税率 計算進口關税，用於進出口成本核算。Customs Duty - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 🪜 分檔累加：各檔 (應税−下限) × 檔率Progressive Income Tax 輸入應納税所得額並自定義各檔級距下限與税率，按分檔累加（各檔 (應税−下限)×檔率）計算三檔及以上累進所得税，用於工資薪金、經營所得的分級計税。Progressive Income Tax - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 🛒 含税 = 價格 × (1 + 税率)Sales Tax Addon 價外税計算器：在價格之外按比例附加消費税，輸入價格與税率按 含税 = 價格×(1+税率) 求含税總額，用於零售標價。Sales Tax Addon - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. ⚖️ 實際税率 = 總税額 ÷ 税前所得Effective Tax Rate 實際税率計算器：輸入總税額與税前所得，按 實際税率 = 總税額÷税前所得 綜合衡量實際承擔的税負水平。Effective Tax Rate - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 📊 應税所得 = 固定扣除 / 邊際税率Break Even Taxable 盈虧平衡應税額計算器：結合固定扣除與邊際税率，估算達到税後目標所需的應税所得，用於税務籌劃。Break Even Taxable - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 🏷️ 折扣後計税計算器Tax on Discount 折扣後計税計算器：輸入原價、折扣率與税率，按折後金額計算應納税額，用於促銷場景的税務處理。Tax on Discount - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 🔄 由代扣金額與徵收率求代扣代繳税額Reverse Charge 輸入代扣代付金額與徵收率，按 税額=金額×徵收率 計算代扣代繳的增值税或税費，用於支付方在代扣代繳義務下的應扣税額快速計算。Reverse Charge - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 💯 由出廠單價、數量與消費税率求消費税Excise Tax 輸入應税消費品出廠單價、銷售數量與消費税率，按 税額=出廠價×數量×税率 計算從價計徵的消費税，用於生產環節應税貨物消費税的快速核算。Excise Tax - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 🌐 由境外已納税與抵免限額求可抵扣額Foreign Tax Credit 輸入境外已納所得税額與抵免限額，按 抵扣額=min(境外已納,抵免限額) 計算可抵免金額，用於居民企業避免國際重複徵税時境外税收抵免額的確定。Foreign Tax Credit - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 👥 由工資金額與雙方費率求工薪税合計Payroll Tax 輸入工資總額、僱主費率與僱員費率，按 税額=工資×(僱主率+僱員率) 計算工薪税（如社保、薪資税）合計，用於僱主核算僱傭一名員工的總用工税費成本。Payroll Tax - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 📦 由應税數量與單位税額求從量税Specific Duty 從量税計算器：輸入應税數量與單位税額，按 T = 數量×單位税額 求從量税，用於按件或重量計徵的關税與消費税。Specific Duty - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. ➖ 由應納税額與税收抵免額求實繳税額Tax Credit 輸入應納税額與可抵免的税收抵免額，按 實繳=應納税額−抵免額 計算抵免後應實際繳納的税額，用於享受投資抵免、研發加計等優惠後的最終繳税金額核算。Tax Credit - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 💯 由總税額與總收入求平均税率Average Tax Rate 平均税率計算器：輸入總税額與總收入，按 ATR = T/Y 求平均税率，反映整體税負佔收入比重。Average Tax Rate - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 💯 由相鄰級距税額差與收入差求邊際税率Marginal Tax Rate 輸入相鄰兩級收入 Y₁、Y₂ 及對應應納税額 T₁、T₂，按 MTR=(T₂−T₁)/(Y₂−Y₁) 計算邊際税率，反映收入增加一單位時税負增加的幅度，用於理解累進税制的邊際效應。Marginal Tax Rate - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 📊 由税收總額與 GDP 求宏觀税負Tax to Gdp 宏觀税負計算器：輸入税收總額與 GDP，按 宏觀税負 = 税收總額/GDP 求整體税負水平，用於經濟分析。Tax to Gdp - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation to... 🛡️ 由繳費基數與社保費率求社保費Social Security Tax 輸入社保繳費基數與綜合費率，按 保費=繳費基數×費率 計算應繳社保費，用於個人或單位根據工資基數快速估算養老、醫療等社會保險的合計繳費額。Social Security Tax - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 📦 由計税價格與從價税率求從價税Ad Valorem Duty 從價税計算器：輸入計税價格與從價税率，按 T = 計税價格×税率 求從價税，用於進口與消費税測算。Ad Valorem Duty - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 📈 由資本收益與優惠税率求應繳税Capital Gains Effective 輸入資本利得收益金額與適用的優惠税率，按 T=收益×優惠税率 計算應繳資本利得税，適合個人轉讓股票、房產等享受優惠計税時的税額快速估算。Capital Gains Effective - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 🎁 由贈與額、免税額與税率求贈與税Gift Tax 贈與税計算器：輸入贈與額、免税額與適用税率，按 T = max(贈與額−免税額, 0)×税率 求贈與税，用於財產轉移税務估算。Gift Tax - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 🧾 由銷售額與增值税率求銷項税額Vat Output 增值税銷項税額計算器：輸入銷售額與增值税率，按 T = 銷售額×税率 求銷項税額，用於一般納税人申報核算。Vat Output - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 📋 税額 = 不含税 × 税率Vat from Exclusive 輸入不含税銷售額與增值税税率，按 税額=不含税×税率 計算增值税額並得出含税總價，用於一般納税人由不含税金額直接開具增值税發票時的價税換算。Vat from Exclusive - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. ✒️ 税額 = 憑證金額 × 印花税率Stamp Duty 印花税計算器：輸入應税憑證金額與適用印花税率，計算應納印花税，用於合同、產權轉移等憑證税務核算。Stamp Duty - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 💰 税額 = 利息 × 税率Interest Income Tax 利息所得税計算器：輸入利息所得與適用税率，計算代扣利息所得税額，用於個人理財與税務核算。Interest Income Tax - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 🏢 税額 = 應納税所得額 × 税率Corporate Income Tax 輸入企業應納税所得額與適用税率，按 税額=應納税所得額×税率 計算應納企業所得税，用於企業在查賬徵收下根據利潤快速估算所得税負擔。Corporate Income Tax - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. ✂️ 税額 = 支付額 × 預提税率Withholding Tax 預提所得税計算器：對非居民企業所得按支付額與預提税率源泉扣繳，輸入支付額與税率求代扣税額。Withholding Tax - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 🏠 税額 = 計税餘值 × 税率Property Tax 輸入房產原值、扣除比例與税率（或從租計徵的租金收入與税率），計算應納房產税，支持從價計徵（餘值×税率）與從租計徵兩種計税方式，用於持有房產的税負估算。Property Tax - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools. 📈 資本利得税計算器Capital Gains Tax 資本利得税計算器：輸入資產買入價、賣出價與適用税率，計算資本利得及應納税額，用於投資税務核算（參考）。Capital Gains Tax - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Taxation tools.