Capital Gains Calculator These calculations show the approximate capital gains deferred by performing an IRC §1031 with Riverside 1031, LLC. Please enter your figures in the fields provided with no commas or dollar signs (for example 250000). Determine Adjusted Cost Basis of Relinquished Property: Original Purchase Price plus Improvements minus Depreciation Equals Net Adjusted Basis Determine Realized Gain on the Sale of Relinquished Property: Sales Price minus Costs of Sale (commissions, fees, etc..) Total Capital Gain Determine Capital Gain Tax Deferred: Federal Capital Gain Tax (State Tax Rate) % plus State Capital Gain Tax Equals Total Taxes Deferred