How can i have my tax id with my customer name in the module of buying and selling

[dennis]

[rohit_w]

Hi @dennis,

Add custom field on customer master and sales invoice

Write custom script for sales invoice to fetch the tax id from customer form to sales invoice
use below code

frm.add_fetch("customer", "tax_id", "tax_id");

For more details please check below links
https://frappe.github.io/erpnext/user/manual/en/customize-erpnext/custom-field
http://frappe.github.io/erpnext/user/manual/en/customize-erpnext/custom-scripts/