We request that you create the expenses with the vendor and tax.
To show expenses in GST on Web, please follow below mentioned steps:
Step 1:Go to Expenses and Click on +Create Expenses.
Step 2: Turn on the Create Expenses with Tax toggle button and
enter vendor details now click on Create Expense and click on Add Expense.
Once you create expenses with tax, expense will displayed in the GSTR-2B.
Please note: This is indicative and for reference only. The actual calculation of GSTR2B will be done automatically on your GST portal based on actual filings done by your vendors.