401(K)/403(B)
An employer-sponsored investment plan that allows individuals to set aside tax-deferred income for retirement or emergency purposes. 401(k) plans are provided by employers that are private corporations. 403(b) plans are provided by employers that are not for profit organizations.

401(K)/403(B) Loan
Some administrators of 401(k)/403(b) plans allow for loans against the monies you have accumulated in these plans. Loans against 401K plans are an acceptable source of down payment for most types of loans.