Clarification on the Difference Between Actual Charge and Invoice Amount of Confluence, Jira

Hi @Vũ Nguyễn Hương Nhi ,

This is the community where there are mainly professional outside Atlassian and it isn't the official support.

Please create a ticket in the official support https://support.atlassian.com/contact#/ 

Hope it helps

Hi @Vũ Nguyễn Hương Nhi 

Most discrepancies are the result of:

• VAT - Atlassian prices are listed in USD without Value Added Tax (or local equivalent). The amount that is charged is the price in local currency + VAT.
• forgotten app demo - Marketplace and Atlassian apps are free to use for a limited amount of time, after which they're billed at a applicable rate (rate depends on the number of users).

If nothing matches your experience, billing support is your best friend.

Hi @Vũ Nguyễn Hương Nhi 

Please raise a Pricing, Billing, & Licensing | Atlassian request

Any question around billing can only be answered by Atlassian. 

You will need to be an admin of your instance to raise a support request.

@Vũ Nguyễn Hương Nhi , It could be anything from currency conversion, taxes, prorates , credits etc.  As @Matteo Vecchiato mentioned, Atlassian support is the right contact to give you verified info and official support on your invoice.