I work as a freelancer. I work for an European company, which is my lone client after three years, but I live in a third world country (let's say I live in Cuba).
Next month I am moving to Mexico City to do my Masters, where the cost of life is higher. I am considering asking my boss for a raise, although I am not sure how to negotiate this.
I am getting paid with a fixed rate per hour. A preliminary research indicated that I would need about the double of my current pay rate to meet the standard monthly salary in Mexico City.
In any case, the corresponding salary for an European worker in my field is way higher, that's the main reason why they use my services in the first place.
However, it seems too hard to ask for doubling the salary. How should I negotiate this?
UPDATE: I say he is my boss because he has been my only client for the last three years, and is the one paying for my services as a full-time job. I am paying my Masters, not him. Once in Mexico, I would change my work regime to 20 hours per week instead of 40 hours per week, in order to meet my Masters' study requirements. So, at the end of the day, I will keep more or less my month salary (double hour rate but half of working time).