USA Loan

In a federal student loan consolidation, existing loans are purchased and closed by a loan consolidation company or by the Department of Education (depending on what type of federal student loan the borrower holds). Interest rates for the consolidation are based on that year's student loan rate, which is in turn based on the 91-day Treasury bill rate at the last auction in May of each calendar year.
Student loan rates can fluctuate from the current low of 4.70% to a maximum of 8.25% for federal Stafford loans, 9% for PLUS loans. The current consolidation program allows students to consolidate once with a private lender, and reconsolidate again only with the Department of Education. Upon consolidation, a fixed interest rate is set based on the then-current interest rate. Reconsolidating does not change that rate. If the student combines loans of different types and rates into one new consolidation loan, a weighted average calculation will establish the appropriate rate based on the then-current interest rates of the different b being consolidated together.
Federal student loan consolidation is often referred to as refinancing, which is incorrect because the loan rates are not changed, merely locked in. Unlike private sector debt consolidation, student loan consolidation does not incur any fees for the borrower; private companies make money on student loan consolidation by reaping subsidies from the federal government.
Student loan consolidation can be beneficial to students' credit rating, but it's important to note that not all federal student loan consolidation companies report their loans to all credit bureaus.