How to access Contact account taxes for sales transaction modules?

Note: For instance, we have considered the Invoices module, you can go to any sales transaction module.
Contact account taxes lets you link a Contact’s Sales account with an Invoice. It auto-updates the taxes chosen for a Contact’s Sales account while preparing an Invoice for an Item. 
Follow these steps to access Contact account taxes:

• Step 1: Setting up a Sales account
• Step 2: Linking a Sales account to a Contact
• Step 3: Automated tax updation with Contact account taxes

Step 1: Setting up a Sales account
Follow these steps to add to a Sales account:

1. Log into your CRM account.
2. Click the User Menu.
3. Click Settings.
4. Look for Inventory.
5. Click Chart of Accounts.
6. You will be directed to the Chart Of Accounts page.
7. Click + Add Account button.
8. You will be directed to the Add New Account window.
9. Add or select the below information:

1. Account Name 
2. Account Code 
3. Account Type
4. Select Tax 

10. Click Save.

You have now successfully added a Sales account.
Step 2 : Linking Sales account to a Contact
Follow these steps to link a Sales account to a Contact:

1. Login to your CRM account.
2. Click the User Menu.
3. Click Essentials.
4. Look for Lead & Contact Management.
5. Select Contacts. 
6. Select a Contact.
7. Under Basic Information in the Sales Account field select a Sales account.

You have now successfully linked a Sales account to a Contact.
Step 3: Automated tax updation with Contact account taxes
Follow these steps for automated tax updation with Contact account taxes:

1. Login to your CRM account.

2. Click the User Menu.
3. Click Inventory.
4. Look for Order Fulfillment.
5. Select Invoices. 
6. Select an Invoice.
7. Under Invoice Details in the Contact Name field select a Contact.
8. Under Item Details:

1. Select an Item.
2. Select the Tax Mode Contact account taxes.
3. Under Tax, taxes derived from the Contact’s Sales Account are autofilled.

With CoA, Contact account taxes has now successfully autofilled a Contact's Sales account taxes for an Invoice.