英国自雇税计算器

使用方法

1. 1
   填写各项

   输入数字或选择所需选项。

2. 2
   查看结果

   更改任何值时，答案会立即更新。

3. 3
   使用结果

   复制结果或记下来。不会向任何地方发送任何内容。

About this tool

Enter your yearly profit after business expenses. The tool works out income tax with the personal allowance, Class 4 National Insurance, how much to set aside each month and your take-home profit. Rates and thresholds are for the 2026-27 tax year and can change. A guide only, check gov.uk for the official figures.

What is included

Income tax uses the 20, 40 and 45 percent bands and the personal allowance, which tapers away above £100,000. Class 4 NI is 6 percent between £12,570 and £50,270 and 2 percent above. Class 2 is no longer compulsory.

Example

On £50,000 profit the tax and NI come to about £11,400, which is roughly £950 a month to set aside.

Not included

Payments on account, student loan repayments, pension contributions and the high income child benefit charge are not modelled. Use the profit after allowable expenses, not your turnover.

计算示例

With the boxes at their starting values (Yearly profit (£): 50000), the tool shows: Income tax (£): 7,486; Class 4 National Insurance (£): 2,246; Set aside per month (£): 811; Share of profit paid in tax: 19.5%; Take-home profit (£): 40,268. Change any box to see your own numbers. The result updates as you type, and nothing leaves your browser.

获得最佳结果的提示

在相信结果之前先检查每一个输入项，因为一个错误的数字就会改变整个答案。请使用工资单、账单、证书或合同上的准确数字，并记下计算日期。税率、门槛和规则会不时变化，因此对于税费和法律事务，请将结果视为估算，并与本页注明的官方来源核对。您可以尝试任意多个方案；不会保存或发送任何内容，刷新页面会清空输入。