Yes, annuities can be used as collateral for a loan. An annuity is a financial product that provides a regular stream of income over a specified period of time. It is often used as a retirement savings vehicle. When using an annuity as collateral, the annuity is pledged as security for a loan. If the borrower defaults on the loan, the lender has the right to take ownership of the annuity to recover the outstanding balance. However, it's important to note that not all lenders accept annuities as collateral, and the terms and conditions may vary depending on the lender and the type of annuity. It's recommended to consult with a financial advisor or lender to understand the specific requirements and implications of using an annuity as collateral.