3 working days. It takes about 3 working days to change the business license. Re-draft an amendment to the Articles of Association, write down the business scope you need to change, affix the official seal of the company, and then go to the local industrial and commercial bureau with the original business license and legal person ID card. If the business scope does not need pre-approval, it can be accepted immediately. If approval is required, it can only be changed by issuing an approval form. Without a business license, industrial and commercial enterprises or individual operators are not allowed to start business, engrave official seals, sign contracts, register trademarks or advertise, and banks are not allowed to open accounts.