Identify the amount of the state's transfer tax. For our example, let's say it is $2 for each $500, or fraction of that amount.
Identify the sale price of the house. For our example the sale price will be $200,000.
Calculate the taxable units. To do that, you will divide the sale price of $200,000 by $500, making the taxable units = 400.
Multiply the taxable units by the transfer tax. In our example it would be 2 x 400, making the transfer tax $800.