Accounting for tax on closing costs

Hi,

I understand the importance of determining your closing costs as the full price you put down to obtain a property. And the “cash-on-cash” ratio or your profit as a proportion of your overall purchase costs (purchase price + closing costs). But if we take into consideration any CGT when we are trying to work out what our overall profit margin after tax will be, why do people tend to ignore the tax deductions we will receive on the closing costs — admittedly these will be written off over 5 years?

HJ72