Your proceeds are the sale price, minus what you owe on the mortgage, minus the costs of selling. In Washington those costs include brokerage compensation, the state real estate excise tax, title and escrow fees, and your share of property taxes to the day of closing.
Sale price − mortgage payoff − selling costs = what you walk away with.
This is not the balance on your last statement. The payoff includes interest up to the day the loan is paid, and any second loan or home equity line is paid off too. Your lender issues an exact figure during escrow.
The sell-then-buy calculator lets you enter your price, your payoff and your own estimate of selling costs, and shows the result straight away.
For an accurate number, I prepare a net sheet: a line-by-line estimate at a realistic price for your home, with each cost filled in. It is free and you do not have to list with me to ask for one.
This is general information, not tax advice. Ask your tax professional about your own situation.
Tell me what you are looking for and I will line up homes, run the payment on each one and answer the questions a listing can’t.