You are responsible for any taxes which were not paid as of the time escrow closed. An escrow account (or an impound account), is a special account that holds the money owed for expenses like mortgage insurance premiums and property taxes.Typically, secured property taxes are prorated between the buyer and the seller during escrow. Escrow disbursements ensure that your property taxes and insurance premiums are paid on time, protecting both you and your lender. A supplemental tax bill is an additional property tax bill based on the difference between the prior assessed value and the new assessed value of real property. In Northern California, it's usually the buyer who pays the transfer tax. It's usually the seller who pays in Southern California. I am in escrow, selling a CA rental condo, and I do not know how to complete Form 593. An escrow company is a neutral third party between the seller and the buyer who holds the money until the home sale is final. How does a change in ownership affect property taxes?