What are the recommended agents for DTV visa assistance in Thailand and what are their fees?

If you're doing the soft power entry scheme you absolutely don't need an agent. The training center will supply all relevant necessary documents. If you are going digital nomad then prepare to submit an abundance of paperwork to prove your freelance or remote worker status, portfolio, CV, explain what it is you do etc, and bank statements for 3-6 months showing transactions, balance, income payments.

I’ve heard from 75,000 to 120,000 baht

"I was thinking that, since I’ve already completed the application myself, and considering that it can only be done online via computer, there’s really nothing an agent can do apart from telling you which documents are required. And if you already have them, all they need to do is upload the PDF to the embassy’s website where you’ll be applying. Given that I’ve read they charge 10,000 baht or more, I could help you myself instead. Feel free to message me privately.

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Fammi sapere se vuoi una versione più informale o più commerciale.

I can assist you from the outside Thailand :)