26 USC 1012 - Basis of property - cost

The basis of property shall be the cost of such property, except as otherwise provided in this subchapter and subchapters C (relating to corporate distributions and adjustments), K (relating to partners and partnerships), and P (relating to capital gains and losses). The cost of real property shall not include any amount in respect of real property taxes which are treated under section 164 (d) as imposed on the taxpayer.