TSP Annuity Calculator: How to Estimate Monthly TSP Annuity Payments
To estimate your monthly TSP annuity payment you can use
an online calculator or download a worksheet.
Use the TSP Annuity Calculator on the Web site to estimate
what your monthly annuity payments might be. The amount of your monthly
annuity payments depends to a large degree on the size of your TSP account
balance (or the portion of your account that you intend to use to purchase the
annuity). In addition, the type of annuity you choose, your age (and your
joint annuitant's age in the case of a joint life annuity), and the interest
rate index at the time that the TSP purchases your annuity, affect the monthly
amount that you will receive.
If you prefer to do your own calculations, you can download the
TSP Annuity Worksheet (available at: https://www.tsp.gov/PDF/formspubs/worksheet.pdf) with
the monthly annuity factor tables and interest adjustment factors to estimate
your payment under various annuity options.