Step1:-First, navigate to Setup>Accounting>Tax Codes.
Step2:-You will see a list of countries and select the one you want to create for.
Step3:-To replicate the code, select the Tax Code you wanted to and also refer its GL and verify these below fields:-
- Include Children (or) not
- Tax Agency
- Tax Type
- Purchase Tax Account
- Sales Tax Account
- Available On(whether on Sales Order (or) Purchase Order (or) Either)

For reference we are using 10% Rate*

GL for 10%

Step4:-After verifying proceed with this navigation Setup>Accounting>Tax Codes> New Tax Code.
Step5:-Enter the fields accordingly and give the Rate* as per the requirement. (Here we are giving an 11% Rate*)

GL for 11%

Step6:-Done
You can see the created Tax Code in the below list.

Created Tax Code showing in Sales Order
