Example of a fixed annuity
Suppose you're looking to supplement your retirement income, so you shop for fixed annuities. You're 70 years old, and you're seeking to annuitize, or draw income, from the contract in 10 years.
For $50,000, you could buy a single-life-only fixed annuity. You'd get monthly payments of $904 for life when you start drawing from the contract, but when you die, your heirs are left with nothing.
You could also use your $50,000 to buy a single-life annuity with 20 years certain. You receive the income for life, but if you die in the first 20 years, your beneficiaries receive any remaining payouts. But because the insurer is on the hook for at least 20 years of payments, your $50,000 would only buy you $573 of monthly income.