[Vuejs]-V-for custom component checkbox not working

e.preventDefault() inside set_taxable is the cause of problem. Removing that part works just fine. You can see the updated fiddle here: https://jsfiddle.net/1Ly7mL6n/9/

Also, I don’t understand your rationale behind using the click binding to trigger set_taxable. Since you have already used v-model binding to toggle local_line_item.taxable in accordance with the checked state of the checkbox, you do not need a click handler for it. So unless you plan to do some more operations in the click handler, you could remove that as well.