What is an Annuity?
In the US, an annuity is a financial contract—usually set up with an insurance company—designed to pay out a fixed sum of money over a period of time. Typically utilized as a means of saving for retirement, annuities provide a reliable stream of cash flows. The annuity owner (or investor) retains control over the policy, the cash surrender value, and can designate beneficiaries.
Insurance companies offer annuities that pay out a specific amount over a predetermined period. These can be structured as an immediate annuity (where payouts begin right away) or a deferred annuity (which involves a period of accumulation before payouts commence). During the accumulation phase, earnings within the annuity grow and compound tax-deferred, meaning you don't pay taxes on the growth until you begin taking withdrawals.
How to Use This Calculator
This Annuity Calculator focuses on the accumulation phase of a deferred annuity. By entering your initial investment, planned additions, and an expected rate of return, you can forecast your future balance.
- Starting principal: The lump sum amount you initially deposit into the annuity.
- Annual addition: The amount you plan to deposit every year.
- Monthly addition: Any smaller recurring amounts you plan to add each month.
- Timing: Indicate if you make your deposits at the beginning of the period (Annuity Due) or the end of the period (Ordinary Annuity).
- Annual growth rate: The expected percentage yield your investment will generate annually.
The Formula / The Method
To calculate the accumulation of an annuity, we compute the future value (FV) of the starting principal and the future value of the regular additions, then combine them. The formulas depend on whether deposits are made at the beginning or end of the period.
FV = P × [((1 + r)t - 1) / r]
Future Value of Annuity Due (Beginning of Period):
FV = P × [((1 + r)t - 1) / r] × (1 + r)
Where:
P = Periodic payment amount
r = Interest rate per period
t = Number of periods
Our calculator seamlessly combines both annual and monthly compounding models to ensure accuracy alongside any initial lump-sum principal growth.
Fixed vs. Variable Annuities
Choosing the right annuity depends on your risk tolerance and financial goals:
- Fixed Annuities: Pay out a guaranteed rate that is largely dependent on market interest rates at the time you sign the contract. They are low-risk and promise the return of principal, making them a common choice for retirees seeking steady, predictable income. However, they may struggle to outpace inflation.
- Variable Annuities: Payouts fluctuate based on the performance of underlying investment assets (usually mutual funds). They offer greater flexibility and higher growth potential but carry a higher risk level, including the possibility that the asset's value could fall below your principal investment.
- Indexed Annuities: A hybrid that combines fixed guarantees with growth tied to a market index (like the S&P 500), offering a balanced approach to risk and return.
Rolling 401(k)s or IRAs Into Annuities
It is entirely possible to roll over qualified retirement plans, such as 401(k)s and traditional IRAs, into annuities tax-free. Because these retirement accounts are designed to provide income in your later years, an annuity can act as a form of insurance, guaranteeing a predictable stream of income during retirement.
Keep in mind that while these transfers are not taxable, they must still be reported on your tax returns. Also, the IRS generally allows only one IRA rollover per one-year period, and you must complete the transaction within 60 days to avoid taxation as ordinary income.
Frequently Asked Questions
An immediate annuity is funded with a single lump sum, and payouts begin almost immediately (within a year). A deferred annuity is built over time during an accumulation phase; your investments grow tax-deferred until you reach retirement age and begin taking an income stream.
Canceling an annuity contract early is called surrendering. Insurance companies typically charge steep surrender fees if canceled within the first 5 to 9 years. The fee generally decreases the longer you hold the policy. Additionally, taking withdrawals before age 59½ may trigger a 10% early withdrawal penalty from the IRS.
Annuities can carry various fees including surrender charges, administrative fees (usually 0.10% to 0.30% annually), mortality and expense fees, investment management fees (specifically for variable annuities), and commissions for the broker who sold the policy. Optional add-ons, called riders, also come with their own distinct charges.
Returns are only guaranteed if you purchase a fixed annuity. Variable annuities do not guarantee returns, as their value is tied to market-based mutual fund investments. Indexed annuities guarantee a minimum return but cap the upside potential based on market index performance.
With an Annuity Due, payments or deposits are made at the beginning of the period. Because the money is deposited sooner, it has more time to accrue interest, resulting in a slightly higher future value or end balance compared to an Ordinary Annuity where deposits are made at the end.