On December 13, 2023, the JPO announced that electronic payment of registration tax will begin on January 1, 2024.
For each unit of application form that requires payment of registration tax, obtain a payment number in advance using the Internet application software, and pay the registration tax with that payment number from Internet banking or ATMs of Pay-easy partner financial institutions.
Japan Patent Office:
https://www.jpo.go.jp/system/process/toroku/iten/tourokumenkyozei/index.html
https://www.jpo.go.jp/system/process/toroku/iten/tourokumenkyozei/denshi.html