Self employed income and tax brackets

Is the higher rate tax bracket (40%) based on the gross or net income for a self employed person? For instance if the gross turnover was 56k, but after expenses and personal allowance the net profit is 40k, which tax bracket would apply? Which figure is used to then calculate the tax?

Hi Lini F,
The tax bracket is based on your taxable income which in your case is the net amount. based on your figures you are not higher rate.
Thank you.