Make stamp duty payable on the difference in cost of the current & new home

We think the current system is unethical, applies a significant tax burden to what is a necessity and increasingly confines progress to those fortunate families that can afford to spare tens of thousands of pounds in addition to the cost of moving home. By reducing this burden, applying a credit for stamp duty paid to use against a future home purchase, we think this would meet the needs of our diverse, increasingly transient population and encourage movement of the workforce.