Sorry in advance if a daft question, just trying to wrap my head around it. For our new house the new mortgage + our sale proceeds cover the purchase price. The stamp duty, fees, moving costs etc. we have in savings. For exchange we need to find £23k to make up the exchange deposit to 10% on top of what we get from our buyers. If I use the money we have saved for stamp duty to cover that, will it then all work itself out on completion day once we get our sale proceeds that will then even the pot out to cover all costs again? Or do we need to find an extra 23k from somewhere? Thanks