Deferred Annuity Calculator
Model the accumulation and payout phases of a deferred annuity in one calculation.
📅 What is a Deferred Annuity?
A deferred annuity is an insurance contract with two distinct phases: an accumulation phase, where your premium grows tax-deferred at a fixed, variable, or indexed rate; and a distribution phase, where you receive periodic income. Unlike an immediate annuity that begins paying right away, a deferred annuity delays income to a future date - typically retirement. This deferral allows your investment to compound over years or decades before income begins, often dramatically increasing the monthly payout you'll eventually receive.
During accumulation, you may make a single lump-sum payment (single premium deferred annuity, or SPDA) or flexible recurring premiums. The credited interest compounds tax-deferred - no annual income tax is due on growth until withdrawals begin. This mirrors how a traditional IRA or 401k grows, but without contribution limits (for non-qualified annuities). Common types include fixed deferred annuities (guaranteed rate), variable deferred annuities (market-linked sub-accounts), and fixed-indexed annuities (index participation with a floor).
When the deferral period ends, the accumulated value converts into a stream of income payments. You can choose a fixed term (e.g., 20 years), a lifetime payout, or a joint-and-survivor option. The payout amount depends on the accumulated value, the payout rate applied during distribution, and the chosen payout period. Deferred annuities are one of the most powerful vehicles for converting a working-years lump sum into guaranteed retirement income.
📐 Deferred Annuity Formula
The deferred annuity calculation is a two-step process. First, the lump-sum premium grows as a compound interest future value over the deferral years. Then the accumulated value is converted into periodic payments using the standard present-value annuity payment formula. A longer deferral period or higher accumulation rate dramatically increases AV, which in turn increases the monthly PMT.