How to get VAT/tax invoice (receipt)

On iOS:

When you purchase the app, Apple will send you its invoice/receipt via your email.

You can also get access to invoices for any past purchases made on iOS or Mac App Store from Apple’s reportaproblem.apple.com website.

* Open the website and log in with the Apple ID that was used to make the purchase.

* Report a Problem website also lets you fetch invoices for any services from Apple you are subscribed to.

* It lets you click “view receipt” and there’s a proper receipt with all the info you need for tax purposes.

On Android:

The address shown on your VAT invoice or receipt is your legal address at the time the purchase was made. You can’t change the address that appears on a VAT invoice or receipt after the purchase is made.

1. Sign in to https://pay.google.com/#settings

2. Check that you've entered your tax ID number. If you haven't, enter it now.

In some countries, you can’t get a VAT invoice or receipt if you didn’t enter your tax ID number before you made the purchase.

3. Click Activity.

4. Click on the transaction you want an invoice for.

5. At the bottom of the transaction details, click Download VAT invoice or Download VAT receipt. You may be asked to enter some information, like your full address or a tax ID.

6. Click Save. You'll see a link where you can download your invoice.

Related article: 

Accepted payment methods and how to add or change your cards