If you moving to another country or relocating you will be thinking about receiving adsense payments to your new country.
The Good news is you can change, the country, address and payment info in your adsense account. Go to new adsense interface and under the settings, you will see the change country option. (if you are lucky)
The Bad news is if you are living in following countries, you cannot change the country. The only way is you have to close your existing adsense account and create a new one. Here are countries Google prohibits changing country:
Algeria, Bahrain, Bangladesh, China, Egypt, India, Indonesia, Jordan, Kuwait, Lebanon, Libya, Malaysia, Morocco, Nepal, Oman, Pakistan, Palestinian Territory, Philippines, Qatar, Sri Lanka, Singapore, Saudi Arabia, Thailand, Tunisia, United Arab Emirates, Vietnam, Yemen.
For more information, please see this Google Adsense Help page