I bought a house in 2001 for 75K.I have made improvements to it and can now sell it for about 170K.I owe about 100K after cashing out some money.If I sell it,am I taxed on the sale amount,the increased value or on the profit I made after the improvements?Also,if my intention is to purchase another house with the money from the sale,does that affect anything as far as the tax on the original sale?The house is used as a rental property.