Using Top-Up benefits may be an option if you plan to use tuition assistance (TA) to complete a degree program while on active duty, and don’t plan to continue your education after service. Top-up can also be helpful for just taking a few courses with TA while on active duty; then you can save most of your GI Bill benefits for after service to complete your education program.
To learn more about TA Top Up, visit https://www.va.gov/education/about-gi-bill-benefits/how-to-use-benefits/tuition-assistance-top-up/