Contact your loan servicer via their website or telephone and request a military service deferment. Print the deferment form from their website or wait for it to arrive in the mail.
Fill out the first part of the form truthfully and accurately with your personal information such as your address, social security number and phone number. Check the "Active duty in Armed Forces" box in section 2.
Have an official of the military branch you are serving in certify the form.
Mail the completed form back to your loan servicer.
Follow up with your loan servicer via telephone or online approximately 10 business days after mailing your form to ensure your deferment was granted.