The factors that affect the amount of your monthly annuity payments include:
- The annuity option you choose.
- Your age when your annuity is purchased (and the age of your joint annuitant if you choose a joint annuity).*
- The amount used to purchase your annuity.
- The "interest rate index" when your annuity is purchased.
You can use the Retirement Income Calculator on the TSP website to "try out" any number of possibilities. You can also contact the TSP to obtain an annuity estimate.
The minimum threshold for an annuity purchase is $3,500. If you have both a traditional and a Roth balance in your TSP account and you want to purchase an annuity, the $3,500 minimum applies to each balance separately. Also, you cannot choose different annuities for each type of balance.