There are some major reasons for the difference between tax profit & accounting profit.
1) Depreciation : there is deprreciation in accounts where as in tax no depreciation but only capital allowance 2) Profit on sale of property and equipment is booked under other income in account where as this is treated as chargeable gains in tax 3) certain expenses are disallowed in tax where as it is treated as expenses in accounts. The above are majot items of difference