SLM Corporation (commonly known as Sallie Mae; originally the Student Loan Marketing Association) is a publicly traded U.S. corporation that provides consumer banking. Its nature has changed dramatically since it was set up in 1973. At first, it was a government entity that serviced federal education loans. It then became private and started offering private student loans, although at one point it had a contract to service federal loans.

The company's primary business is originating, servicing, and collecting private education loans. The company also provides college savings tools such as its Upromise Rewards business and online planning for college tools and resources. Sallie Mae previously originated federally guaranteed student loans originated under the Federal Family Education Loan Program (FFELP). and worked as a servicer and collector of federal student loans on behalf of the Department of Education. The company now offers private education loans and manages more than $12.97 billion in assets. Sallie Mae employs 1,400 individuals at offices across the U.S.

On April 30, 2014, Sallie Mae spun off its loan servicing operation and most of its loan portfolio into a separate, publicly traded entity called Navient Corporation. Navient is the largest servicer of federal student loans and acts as a collector on behalf of the Department of Education.

The Student Loan Marketing Association was originally created in 1972 as a government-sponsored enterprise (GSE) and began privatizing its operations in 1997, a process it completed at the end of 2004 when Congress terminated its federal charter, ending its ties to the government. The company remains the country's largest originator of federally insured student loans. Through its specialized subsidiaries and divisions, Sallie Mae also provides debt management services as well as business and technical products to a range of business clients, including colleges, universities and loan guarantors.

In 2005, Sallie Mae was among 53 entities that contributed the maximum of $250,000 to the second inauguration of President George W. Bush.

In August 2006, Sallie Mae acquired Upromise, a company that provides rebates to buyers of certain brands, which can be applied to college savings accounts. Sallie Mae and Upromise plan to market comprehensive financial packages to parents and students, including investment plans, financial aid information, and student loans.

On April 16, 2007, Sallie Mae announced that an investor group led by J.C. Flowers & Co. signed an agreement to purchase Sallie Mae for approximately $25 billion. Had the transaction completed, J.C. Flowers along with private-equity firm Friedman Fleischer & Lowe would have owned 50.2% of Sallie Mae, and Bank of America and JPMorgan Chase would each have owned 24.9%. Sallie Mae would have ceased to be a publicly traded company. The deal fell through in September 2007, with the buyers blaming adverse changes to the business's outlook as a result of the College Cost Reduction and Access Act of 2007 and the tightening of global credit markets following the 2007 subprime mortgage financial crisis. Sallie Mae subsequently began legal action, only to drop it in January 2008 upon completion of a $31 billion funding round, including funding from Bank of America.

On April 6, 2009, Sallie Mae announced that it will move 2,000 jobs back to the U.S. within the next 18 months as it shifts call center and other operations from overseas.

On March 31, 2010, Sallie Mae announced the impending layoff of 2,500 employees in response to the signing of new legislation calling for the federal government to lend directly to students, bypassing institutions like Sallie Mae.

On July 1, 2010, Sallie Mae announced that it will be moving its headquarters from Reston, Virginia, to its existing facility in Newark, Delaware, in 2011.

On September 17, 2010, it was announced that Sallie Mae will acquire federally insured loans from Citigroup-owned Student Loan Corporation worth $28 billion.

On Feb 25, 2014, Sallie Mae announced the new name for the student loan side which will be called "Navient".

The Sallie Mae corporate headquarters is in Newark, Delaware. Sallie Mae has offices in Newton, Massachusetts; Indianapolis, Indiana; Salt Lake City, Utah; and Reston, Virginia.

Raymond J. Quinlan is chairman of the Board of Directors. He joined the board in 2014 replacing previous chairman Anthony P. Terracciano—formerly president of First Union Corporation (now Wells Fargo). Quinlan is also the chief executive office of Sallie Mae. He took over as CEO when the company announced its strategic separation in May 2014. Albert Lord held the positions of vice chairman and CEO until his retirement 2013. Lord joined Sallie Mae in 1981, took over as CEO in 1995, and led the company's privatization. On May 29, 2013, the board announced Jack Remondi as Lord's successor.

Corporate Responsibility Officer has named Sallie Mae one of America's "100 Best Corporate Citizens" five times. Corporations (over 1,100 are evaluated) are selected according to community, governance, diversity, and environmental best business practices.

Sallie Mae sponsors The Sallie Mae Fund, a charitable organization with a mission to increase access to higher education for America's students by supporting and starting programs and initiatives that help open doors to higher education. The Sallie Mae Fund prepares families and students for college and provides scholarship funding that focuses on minority, low-income, and "first in the family" students. Since 2001, The Sallie Mae Fund has awarded $10 million in scholarships to help 4,000 students enroll in college.

Through The Fund's work, Sallie Mae was named among BusinessWeek's Top 15 Corporate Philanthropists in 2004. The Washington Business Journal identified the company as the top local corporate philanthropist in 2005.

Sallie Mae won the Ron Brown Award for Corporate Leadership in 2006. It was honored for three college-access programs developed by The Sallie Mae Fund: Latino College Access Campaign, Project Access: DC, and The Sallie Mae Fund Scholarship Programs.

The Sallie Mae Fund earned the 2007 Insight Award for Customer Advocacy in Financial Services (from Insight Forums, LLC). The award recognizes financial communications initiatives that proactively enable customers to make fully informed choices.

In December 2010, Kiplinger’s Personal Finance recognized Sallie Mae Bank as the Best Online Savings Account.

In December 2011, Kiplinger’s Personal Finance recognized Sallie Mae Bank as the Best Money Market Account.

In December 2012, Kiplinger’s Personal Finance recognized Sallie Mae Bank as “the best place to stash cash.”

In December 2013, Kiplinger’s Personal Finance recognized Sallie Mae Bank as the Best Savings Account.

In 2014, Sallie Mae was recognized as one of America’s healthiest banks by DepositAccounts.com.

A 60 Minutes segment (originally aired May 7, 2006) examined Sallie Mae, including its business practices. US Senator Elizabeth Warren, then a professor of law at Harvard Law School, an expert on bankruptcy and an outspoken critic of consumer lenders, questioned Sallie Mae's dual role as lender and collector.

In February 2007, New York Attorney General Andrew Cuomo launched an investigation into alleged deceptive lending practices by student loan providers, including The College Board, EduCap, Nelnet, Citibank, and Sallie Mae. On April 11, 2007, Cuomo ended his investigation of Sallie Mae and announced that Sallie Mae had voluntarily agreed to change its lending standards to satisfy a new code of conduct for student loan practices established by Cuomo, and to donate $2 million (USD) to a fund devoted to educating college-bound students about their loan options.

On October 10, 2007, documents surfaced showing that Sallie Mae was attempting to use the Freedom of Information Act to force colleges to turn over students' personal information. The university involved, the State University of New York system, is expected to decline the request and be forced to defend its position in court.

In December 2007, a class action lawsuit was brought against Sallie Mae in a Connecticut federal court alleging that the company discriminated against African American and Hispanic private student loan applicants by charging them high interest rates and fees. The lawsuit also alleged that Sallie Mae failed to properly disclose private student loan terms to unsuspecting students. New York Attorney General, Andrew Cuomo, raised similar concerns about possible student loan redlining in June 2007. The lawsuit was settled and dismissed in 2011. Under the terms of the settlement, Sallie Mae agreed to make a $500,000 donation to the United Negro College Fund and the attorneys for the plaintiffs received $1.8 million in attorneys' fees.

On January 31, 2008, SLM Corporation had a lawsuit for failing to adequately reserve for losses in Sallie Mae's non-traditional portfolio and paid $35,000,000 for settlement.

A False Claims suit was filed against Sallie Mae by former U.S. Department of Education researcher, Dr. Oberg. The suit alleges that Sallie Mae and other lenders deliberately overcharged the U.S. government. The findings by Oberg were labeled among higher education policy analysts as the 9.5 scandal.

On February 20, 2014 Illinois Attorney General Lisa Madigan's office announced that an investigation into Sallie Mae's debt collection practices and loan servicing practices had been opened.

On November 9, 2005, former Sallie Mae employee Michael Zahara filed a federal lawsuit against the company, alleging that it had a pattern and practice of granting forbearance in a purposeful effort to increase total student loan debt. On October 29, 2008, permission was granted to his legal counsel to withdraw from the case, citing "From counsel’s perspective, a breakdown in trust has resulted from the discovery that Relator has been arrested for extortion, the circumstances surrounding that arrest, and Relator’s failure to disclose the arrest to counsel." On March 12, 2009 the court ruled "dismissal without prejudice" because "the plaintiff has failed to obtain substitute counsel by the deadline." Zahara was seeking new counsel.