For you to pass tax you have to be good in 5 main concepts, this include;
1.Allowable & non allowable expenses & taxable & non taxable income
2. Taxation of others sources of income(Investment income).
3.Approaches of determining taxable income.
4. Capital investment deductions
5. VAT.
The video above has dissected the concept of investment income which is very vital for you to pass tax.
