you sold the property for $315,000
you purchased the property for $108,500 and you further invested an additional $207,000, so your total 'cash invested' is $315,500. From that figure, you depreciated $15,000, so your 'cost basis" is $300,500.
the difference of the two numbers is your profit: $315,000 - $300,500 or $14,500 of profit. You will owe taxes on the $14,500.
Not to complicate matters, but if you had 'passive losses' that you could NOT deduct off your taxes in prior years THAT number is to be subtracted from the $14,500 gain as well. If the result goes negative, you have a capital loss and that can be deducted from your taxes as well (maximum $3,000 against wages, etc. losses each year).
for this one year, might be worth hiring an accountant; however TT can handle this stuff; just go slow and carefully.
ps technically your costs to sell the property are to be subtracted from the sales price and not added to the cost basis. the end result is the same but it's just the way it's done.
