Mortgage Tax Calculator
To calculate the total due to the Treasurer for an original mortgage, click on the mortgage tax calculator link.
To calculate the total due to the Treasurer for a first modification, amendment, or extension of a prior mortgage, click on the first modification link.
Use this calculator for Tulsa County properties only. If you have a modification that needs to be calculated for another county, contact that county directly. We will not do calculations for other counties.
To calculate the total due to the treasurer on an instrument which has been modified more than once, complete and submit the Multiple Modification Calculation Request form or call 918-596-5053.