> For the complete documentation index, see [llms.txt](https://helpdesk6.getfly.vn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://helpdesk6.getfly.vn/phien-ban-web/doi-tac-ket-noi/hoa-don-dien-tu.md).

# Hóa đơn điện tử

- [VNPAY Invoice](https://helpdesk6.getfly.vn/phien-ban-web/doi-tac-ket-noi/hoa-don-dien-tu/vnpay-invoice.md)
- [Hilo Invoice](https://helpdesk6.getfly.vn/phien-ban-web/doi-tac-ket-noi/hoa-don-dien-tu/hilo-invoice.md)
- [Bkav eHoadon](https://helpdesk6.getfly.vn/phien-ban-web/doi-tac-ket-noi/hoa-don-dien-tu/bkav-ehoadon.md)
- [M-Invoice](https://helpdesk6.getfly.vn/phien-ban-web/doi-tac-ket-noi/hoa-don-dien-tu/m-invoice.md)
- [WinInvoice](https://helpdesk6.getfly.vn/phien-ban-web/doi-tac-ket-noi/hoa-don-dien-tu/wininvoice.md)