How i create and use Input tax on the expenses and purchaes, please let me know

Hi there, jabirnaeemi.

I'll provide steps on how you can input a tax on the expenses and purchase transactions. 

To start putting a tax in your vendor's entries, you'll need to turn on the Vat/Tax feature in your QuickBooks account.

Here's how:

1. Click Taxes at the left panel.
2. select Set up tax.
3. Set up the tax agency details such as the name of your tax agency, any official tax number that has been assigned to your company, your reporting method, and how often you file your tax to your tax agency.
4. Checkmark the box in the This tax is collected on purchases. Then, enter the Purchase rate.
5. Follow the steps to finish the setup and choose Next.
6. Once the sales tax is set up, you'll see the Tax Centre. Also, the Tax column appears on your sales and purchase forms.

Once done, you can now create additional tax rates on your purchases and expenses. Please follow these steps:

1. Click on Taxes at the left pane.
2. Choose the Add tax button. Then, Tax rate.
3. Select the Purchases checkbox.
4. Give the new tax rate a name, description, and percentage rate (usually the standard), then choose an account and determine which return line you want the tax amount to appear on.
5. Hit Save.

Please check this article to see steps on how to deactivate tax rates and to add group tax: How do I set up sales GST/VAT rates and use them on forms? (International QBO).

Please know that you're always welcome to post if you have any other concerns. Wishing you and your business continued success.