@Nadeem *******
yes but you could also do it in another way. And ditch the first 2 extensions and just exit the country 3 times.
Entry 1 = 60 days. Exit
Entry 2 = 60 days. Exit
Entry 3 = 60 days. But use less and exit with enough time to re enter BEFORE THE VISA EXPIRES.
Entry 4 = 60 additional days. Extend this by 30 days = 9 months
This way you pay less in extensions but you have to border hop.
The easiest border hop (and most beautiful) is Koh Lipe/Langkawi. Direct boat between 2 islands.
Second easiest is Mae Sot. But not beautiful at all 😉
A few rules to remember with border hops. You can only do TWO land deals crossings per calendar year.
So this needs to be planned too.
Other hops need to be by air.
With kids you won’t be harassed so much with immigration on hopping in and out for a year.
Edit* And I would not let the kids go on unpaid overstay extension for the first times. But the last time you need an extension you can just not do it for the kids as they don’t get fined. But they will get an overstay stamp in their passport. If leaving who cares. If coming back you don’t want many of these (save almost 8000 baht here for the kids)