401(k) 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 salary, your contribution and your employer match as a percent of pay, your current balance, years to retirement, expected return and yearly pay raise. The calculator adds contributions each year and compounds the balance to show the total at retirement. Figures are for the 2026 tax year and can change. A guide only, check irs.gov or a tax professional.

How it is calculated

Each year the tool adds your contribution and the employer match, both as a share of that year's pay, and grows the balance by the expected return. Pay rises by the raise rate each year. Contributions are assumed to arrive evenly through the year.

Example

On $80,000, with 8 percent saved and a 4 percent match, a $20,000 start and 7 percent return, the balance after 30 years is above $1.6 million, before inflation.

Limits and tips

The 2026 employee deferral limit is $24,500, with extra catch-up contributions from age 50. Always capture the full employer match first, because it is an immediate return. Results are in future dollars and inflation reduces what they buy.

計算示例

With the boxes at their starting values (Current yearly salary ($): 80000; Your contribution (% of pay): 8; Employer match (% of pay): 4; Current balance ($): 20000; Years until retirement: 30; Expected return per year (%): 7), the tool shows: Your contributions ($): 304,483; Employer contributions ($): 152,241; Investment growth ($): 963,473; Total saved in the first year ($): 9,600; Projected balance ($): 1,440,197. 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。