People moving to Thailand should understand the Thai Baht to their home currency exchange rates over the long term.
When the exchange rates go up or down, prices can get more expensive and it can cost much more to live here.
If you plan your personal budget on a current rate, be advised over the years, anything can happen with this rate. It can go up or worse yet, it can go down.
Currently the rate is 32.6 thb to the US $1.
When the thb gets around 30, things get more expensive here.
Tourism slows down and Thailand has problems due to lack of tourists.
Previously in history, there have been rates as low as 23 thb to US $1.
Without doing a ton of historical financial research, it is impossible to guess what the rate will be over the next 20 years.
Economists do try to predict the rates in the short term. However, this does not help someone trying to understand how much it will cost to live in Thailand the next 20+ years.
Any number of world factors can affect the exchange rate.
It is best if you are planning on moving to Thailand to NOT set your financial expectations on the highest exchange rates at the time, but the lowest.
If you have enough monthly income at the lowest exchange rates, then no matter what happens, you will have enough money to stay here.
Always remember the exchange rate is never a fixed amount and fluctuations in the exchange rate can drastically change your quality of life here.