What should I do if my bank balance drops below 500,000 baht while on a DTV in Thailand?

I was asked to show my 500k was there and accessible on my first arrival on DTV in July at Chiang Mai. I was approached for interview after submitting my digital arrival card.

Don’t listen to anyone here, I was checked.

The 500,000 baht is mainly checked at the application stage and again if you’re doing an extension inside Thailand. Immigration doesn’t usually re-check your account every time you exit and re-enter, so short trips in and out aren’t normally a problem as long as you already hold the visa.

Where it can matter is if you go to extend from 180 → 360 days. At that point, they can ask to see your funds again, so you’ll want to plan ahead. Some people top up with family sponsorship letters (your parents could help if needed), others move savings around temporarily just to show the balance.

He whole point is to use in emergency. You will probably never be asked for it if you dont extend in country at immigration. Dont worry

You are only requested to show the bank statement when you apply, once approved they don’t need to see

I have been in and out multiple times. Never been asked to show 500k and I don't expect to be asked.

At present you are not asked to show your bank balance on arrival. If you extend at immigration you need to have the 500k.