How to claim Japan tax refund after leaving the country? Need help with tax representative process

Hi everyone,

I left Japan recently and had already assigned a tax representative before departing. Now I’m trying to apply for my tax refund for pension lumsum, but I’m not sure what the exact process is or what documents I need to submit.

I’m a bit confused about:

• What forms/documents are required to file the tax refund
• What I should send to my tax representative
• Whether my representative can handle the entire process on my behalf
• The easiest way to complete the refund without mistakes

If anyone has gone through this before, could you please explain the steps in a simple way? Also, what exactly should I prepare and send to my tax representative?

Any guidance would really help. Thank you!