Fiona Judge

Hi - I am self employed and bought a business car in the tax year 2022-23. How do I include the purchase cost of the car on the self assessment form? I am going to declare 71% of the purchase cost, insurance, vehicle tax etc etc as this is the equivalent of 5 days use out of 7 per week. Any help much appreciated. I have read that I must declare the vehicle as a capital expenditure & create a 'pool' for the car? Very confused.