Business incorporation calculator
Where you run a business as a sole trader it might save tax and NI if you transfer it to a company. However, doing so has immediate and long term tax consequences.
Using the calculator
Our calculator works out the tax effects of transferring an unincorporated business to a company. It shows how much, if any, tax you can save on business profits. It also allows you to project both your and the company's tax and financial position in the four years following incorporation.
Related Topics
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Corporation tax return filing deadline
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Deadline to file self-assessment return
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Planning ahead for pension salary sacrifice changes
From 6 April 2029, both employers and employees will be required to pay Class 1 NI on pension contributions in excess of £2,000 made through a salary sacrifice arrangement. What can you do about it?




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