分步说明
Calculate Your Taxable Profit
First, calculate your taxable profit by subtracting your total expenses and capital allowances from your total turnover. For example, if your total turnover is £50,000, your total expenses are £20,000, and your capital allowances are £5,000, your taxable profit would be £50,000 - £20,000 - £5,000 = £25,000.
Determine Your Income Tax Rate
Next, determine your income tax rate based on your taxable profit. If your taxable profit is below £50,000, your income tax rate is 20%. If your taxable profit is above £50,000, your income tax rate is 40%. Using the example from step 1, if your taxable profit is £25,000, your income tax rate would be 20%.
Calculate Your Income Tax
Now, calculate your income tax by multiplying your taxable profit by your income tax rate. Using the example from step 2, if your taxable profit is £25,000 and your income tax rate is 20%, your income tax would be £25,000 x 0.20 = £5,000.
Calculate Your NI Contributions
Then, calculate your NI contributions by multiplying your taxable profit by the NI rate. If your taxable profit is between £8,632 and £50,000, the NI rate is 9%. If your taxable profit is above £50,000, the NI rate is 2%. Using the example from step 1, if your taxable profit is £25,000, your NI contributions would be £25,000 x 0.09 = £2,250.
Add Your Income Tax and NI Contributions
Finally, add your income tax and NI contributions to get your total tax liability. Using the examples from steps 3 and 4, if your income tax is £5,000 and your NI contributions are £2,250, your total tax liability would be £5,000 + £2,250 = £7,250.
Use a Calculator for Convenience
While calculating your self-employed tax and NI contributions manually can be helpful for understanding the underlying formulas, using a calculator can be more convenient and accurate. You can use an online self-employed tax calculator to get an instant result with a breakdown of your tax liability and payment schedule.
Introduction to Self-Employed Tax Calculation
As a self-employed individual in the UK, calculating your income tax and National Insurance (NI) contributions can be a complex task. However, understanding the underlying formulas and calculations can help you make informed decisions about your finances. In this guide, we will walk you through the step-by-step process of calculating your self-employed tax and NI contributions manually.
Prerequisites
Before we dive into the calculations, make sure you have the following information:
- Your total annual turnover (business income)
- Your business expenses for the year
- Your capital allowances (if any)
Formula for Self-Employed Tax Calculation
The formula for calculating self-employed tax is as follows:
- Taxable Profit = Total Turnover - Total Expenses - Capital Allowances
- Income Tax = Taxable Profit x Income Tax Rate (20% or 40% depending on the tax bracket)
- NI Contributions = Taxable Profit x NI Rate (9% for profits between £8,632 and £50,000, and 2% for profits above £50,000)