Sorry I am not sure I understand your message.
Will tax be deducted from the allowance as if so we may need to gross it up so she gets the amount in the contract. Please can you let me know how much it would need to be for the employee to take home the designated amount post tax?
I also omitted to add a housing allowance that needs to be paid each month please of 50,000THB per month. Please can you let me know how much it would need to be for the employee to take home the designated amount post tax?