When you sell to us, we pay the closing costs. Your liens are paid off from the sale at closing.
A lien is a claim that can affect the property or the money due at closing. A payoff is the current amount and instructions from the creditor or tax office. The Town can confirm its property-tax account; a lender or other creditor confirms its own payoff. The title company reviews the property records and works with the relevant parties on the payoff information for the sale.
Closing costs are separate from your mortgage balance, liens, back taxes, and share of current property taxes. Those property balances are handled from the sale as applicable; they are not the closing-cost promise.