Generally speaking, the maintenance fund invoice for buying a house can be queried and downloaded in the electronic wallet applet.

The specific steps are as follows: 1. Open the electronic ticket folder applet page and click "Login".

2. Click WeChat user quick login or mobile phone number registration/login, and then check the box at the bottom of the page to read and agree.

3. Enter the unit-specific service page and click "Self-service Balloting".

4. Enter necessary information such as your real name, user password, invoicing date, and then click "Search E-Ticket".

5. After searching for the corresponding electronic ticket, you can download and print it.

Please note that the Home Maintenance Fund is not subject to VAT and therefore cannot be invoiced.

If you have any questions, it is recommended to consult the relevant tax authorities or professional lawyers.