I wasn’t sure if the requirement was for $15,000 equivalent per family or per dependent (it seems to vary based on the embassy location) so just to be safe, I tried to show a balance over $30,000. I had him submit 3 months of statements from my bank account. While I was over the $30,000 threshold only for the last month, the balance was still way over $15,000 for the previous 2 months. I also gave my 3 months pay slips, wrote a sponsorship letter, and provided our marriage certificate.
My husband applied as my dependent in Vientiane last month. It was much easier and quicker than we had expected. Submitted on a Sunday, paid on Monday morning, got approved Tuesday night. No interview.
You can write a sponsorship letter for her and use the joint account statements. Include your marriage certificate. In our case, we had 1 million baht equivalent in the last month but not for all 3 months and we got approved within 2 working days in Vientiane.
my spouse just got his dependent visa from Vientiane within 2 days. Applied Sunday evening, paid Monday morning, approved tonight (Tuesday night). Perhaps it’s quicker because it’s for dependents?
here to update that I got my DTV! Appointment was this Monday morning. I submitted my documents and then they told me to come back in the afternoon for my interview. Interview took just a couple of minutes. After that you pay and get a receipt to come pick up your passport 2 days later. It was all quite easy and they were nice.