How much will a $100,000 annuity pay each month at age 60?

It's important to understand exactly what an annuity will deliver before you sign on the dotted line. Sakchai Vongsasiripat/Getty Images For the majority of Americans heading into their 60s, their Social Security benefits will eventually provide at least some foundation for their retirement plans. But the gap between what those benefits cover and what a comfortable retirement actually costs can be high, especially in today's landscape, where the cost of living is rising rapidly amid other …