Remaining, or unmet, need represents the amount of the total budget not covered by either the EFC or financial aid. In 1999–2000, about one-half of all full-time dependent students had a calculated unmet need. Depending on the type of the institution attended, 74 to 92 percent of low-income students and 38 to 65 percent of middle-income students had unmet need. At each type of institution, low-income students were more likely than middle-income students to have unmet need. Among students with unmet need, the average amount ranged from $4,000 to $9,300 for low-income students, and from $2,100 to $10,700 for middle-income students. At public institutions, low-income students with unmet need averaged higher amounts than their middle-income counterparts. At private not-for-profit 4-year nondoctoral institutions, no difference was detected between the two groups, and at private not-for-profit doctoral and liberal arts institutions, the apparent difference was not statistically significant.