英國國民保險計算器
計算工資或自僱利潤的年度、月度和每週國民保險。
在您的瀏覽器中執行。您的檔案不會離開裝置。 瞭解如何驗證
…
使用方法
- 1填寫各項
輸入數字或選擇所需選項。
- 2檢視結果
更改任何值時，答案會立即更新。
- 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 a yearly salary or profit and choose employee (Class 1) or self-employed (Class 4). The calculator applies the main rate to earnings between the primary threshold and the upper limit and the additional rate above it. Rates and thresholds are for the 2026-27 tax year and can change. A guide only, check gov.uk for the official figures.
How it is worked out
Employees pay 8 percent on earnings between £12,570 and £50,270 a year and 2 percent above that. Self-employed people pay Class 4 contributions at 6 percent on profits between the same limits and 2 percent above. Employers pay 15 percent on a worker's earnings above £5,000, which is shown for comparison but is not taken from your pay.
Example
On a £45,000 salary an employee pays 8 percent of £32,430, which is about £2,594 a year or £216 a month.
Tips
National Insurance builds your State Pension record. If your pay is between the lower earnings limit and the threshold you can still get a qualifying year without paying.
計算示例
With the boxes at their starting values (Yearly salary or profit (£): 45000; Type: Employee (Class 1)), the tool shows: Per month (£): 216.20; Per week (£): 49.89; Share of your pay: 5.8%; Employer's NI on top (£): 6,000; National Insurance per year (£): 2,594. 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。
要點
常見問題
Is National Insurance the same as income tax?
No. Income tax and National Insurance are separate. NI helps build your State Pension and some benefits.
Do I pay NI on a pension contribution?
Through workplace schemes that take pension from your pay before tax (salary sacrifice) you may pay less NI, but ordinary net pay arrangements do not reduce NI.
What changes for the self-employed?
Class 4 NI is 6 percent on profits in the main band. Class 2 is no longer compulsory, though a voluntary payment can fill gaps in a State Pension record.
Which year are the rates for?
The 2026-27 tax year, 6 April 2026 to 5 April 2027.