A map from the immigration office to where you live, many offices want this to be hand drawn not from Google. You'll also need at least 3 months of bank statements, 12 months for future extensions

If you have remote work then the DTV based on workation is the only option for you to do that legally. The 500k baht (or equivalent) in the bank is an absolute requirement though whether you have a lawyer helping or not

Nobody can answer this question other than the immigration officer you will stand in front of

@Lynnette ******

maybe

The TDAC is free, no need to pay

If you want to apply for a visa in the Netherlands you have to be in the Netherlands when you apply and remain in the Netherlands until the process completes

Take both passports when stamping out. I suspect they'll actually put the exit stamp in the new passport

Ah got it. The tax credit comes at the end after calculating Thai tax not at the beginning. Thanks

@Pete ******

but you said that up to £39k could be taken in free of tax originally. Let's stick with that rather than moving the goalposts. £39,000 minus £12,570 gives £26,430. 20% of that is £5,286. Using your FX rate gives 224,073 baht. So 60k+100k+224k = 684,073 baht free of thai tax. But £39,000 is 1,653,210 baht so net is 969,137 baht. 1st 150k is exempt, the next 150k is taxed at 5%, the next 200k at 10%, the next 250k at 15% and the remainder at 20% so 7,500+20,000+37,500+43,827.40 = 108,827.40 thai tax due. What am I missing?

@Pete ******

you don't address your misuse of 20% though for a basic rate UK taxpayer, basically you are ignoring the personal allowance which of course isn't taxed so doesn't provide any tax credit