Funding a PhD in physics typically involves a combination of tuition waivers and stipends for living expenses, which can vary significantly based on the institution and available opportunities. Many physics programs in the U.S. offer full funding through teaching assistantships, research assistantships, fellowships, or scholarships, with stipends ranging from approximately $22,000 to $37,000 annually. The availability of funding often depends on the strength of the program, the advisor's research grants, and the applicant's qualifications. It's crucial for prospective students to consider schools that have robust funding options, a high demand for teaching assistants, and strong departmental reserves to mitigate potential funding issues. Research funding is typically allocated through faculty grants, meaning students do not directly apply for research funding but can be supported by their advisors' grants if they secure a research assistantship.