美國自僱稅計算器

使用方法

1. 1
   填寫各項

   輸入數字或選擇所需選項。

2. 2
   檢視結果

   更改任何值時，答案會立即更新。

3. 3
   使用結果

   複製結果或記下來。不會向任何地方傳送任何內容。

About this tool

Enter your net profit from self-employment. The calculator applies 15.3 percent to 92.35 percent of your profit, with the Social Security part capped at the wage base, and shows the half you can deduct and a quarterly amount to set aside. Figures are for the 2026 tax year and can change. A guide only, check irs.gov or a tax professional.

How it works

Self-employed people pay both the employee and employer halves of Social Security (12.4 percent) and Medicare (2.9 percent). The tax applies to 92.35 percent of net earnings. Social Security stops at the yearly wage base, $184,500 for 2026, while Medicare has no cap.

Example

On $80,000 profit the base is $73,880, so the tax is about $11,300. Half of it, around $5,650, is deductible from your income.

Tips

Pay quarterly estimates to avoid penalties, on 15 April, 15 June, 15 September and 15 January. Self-employment tax is on top of income tax.

計算示例

With the boxes at their starting values (Net profit from self-employment ($): 80000), the tool shows: Earnings subject to the tax ($): 73,880; Social Security tax ($): 9,161; Medicare tax ($): 2,143; Deductible half ($): 5,652; Set aside per quarter for this tax ($): 2,826; Self-employment tax ($): 11,304. Change any box to see your own numbers. The result updates as you type, and nothing leaves your browser.

獲得最佳結果的提示

在相信結果之前先檢查每一個輸入項，因為一個錯誤的數字就會改變整個答案。請使用工資單、賬單、證書或合同上的準確數字，並記下計算日期。稅率、門檻和規則會不時變化，因此對於稅費和法律事務，請將結果視為估算，並與本頁註明的官方來源核對。您可以嘗試任意多個方案；不會儲存或傳送任何內容，重新整理頁面會清空輸入。