For invoices related to purchases made through Google Play, you'll need to request them directly from Google. Follow these steps to do so:
- Sign in to your Google Payments profile.
- Click on the transaction for which you want an invoice.
- At the bottom of the transaction details, click Download VAT invoice.
- You may be asked to enter some information, like your full address or a tax ID.
- Click Save. You'll see a link where you can download your invoice.
Further information is available on Google Play's Help Center.
Related to