Write down what you have done to deserve a raise. You said your responsibilities have increased, so you should be able to list those. If you have done any projects that you can point to that would help your case, write those down as well. Any customers comment on your doing a good job, write that down as well. When you have your list of what you have done to help the company succeed, and how you have helped make the workplace better, then go to your manager, ask for a meeting time and then present your case. You may have to specifically ask for a raise. Say I would like a raise of x. If they say no, ask what you can do to improve so that you can receive a raise. Then ask if they will review in x months. Good luck! Hugs Kit