What is the difference between an ordinary annuity and an annuity due?

An ordinary annuity assumes payments are made at the end of each period, while an annuity due assumes payments are made at the beginning. This timing affects the total future value because money invested earlier has more time to earn interest.

How does compounding frequency affect the final balance?

More frequent compounding (monthly or daily) results in a higher final balance than annual compounding, because interest is calculated and added to the principal more often, allowing subsequent interest to be earned on a slightly larger amount.

Can these calculators show me how long my money will last?

Some calculators, like the Bankrate tool, are designed to model payout phases and can show how long funds might last based on withdrawal amounts, but most basic annuity calculators focus on the accumulation phase and final balance rather than longevity of funds.

What information do I need to use an annuity calculator?

You typically need the starting principal or initial deposit, the amount and frequency of regular contributions, the interest rate or expected rate of return, and the total time period for the investment. Some tools also let you specify whether contributions are made at the beginning or end of each period.

Do any of these tools show a year-by-year breakdown of growth?

Calculator.net provides an accumulation schedule that breaks down the balance, interest earned, and additions for each year, which can help you see how your savings grow over time.

Investing & Markets4 options compared

Annuity Calculator

Calculates the future value of an annuity, estimating its growth with potential annual or monthly contributions through either annuity due or immediate annuity options. Ideal for investors looking to forecast their retirement income or understand how regular savings can grow over time in an annuity account.

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Editors’ Top PickBased on community votes

Omni Calculator

omnicalculator.com

Use the annuity calculator to find the final balance of an annuity.

Open Omni Calculator Read review →

Other OptionsRanked by votes

02
02
Calculator.net
calculator.net
Free annuity calculator to forecast the growth of an annuity with optional annual or monthly additions using either a...
Open site View details
03
03
Bankrate Calculators
bankrate.com
Calculates payout amounts and growth of an annuity over a chosen period.
Open site View details
04
04
Pi Day Calculators
piday.org
Calculates present and future values of an annuity given payment, rate, and term.
Open site View details

Side by side

Annuity Calculator options compared

Tool	Best for	Strengths	Limitations
Omni Calculator omnicalculator.com	Users needing flexible payment and compounding options	Wide range of payment frequencies and compounding periods Clear display of final balance, total deposits, and total return	May include ads on the page
Calculator.net calculator.net	Users who want a simple accumulation breakdown	Shows principal, total additions, and interest earned clearly Includes accumulation schedule for year-by-year view	Fewer compounding frequency options than Omni Calculator
Bankrate Calculators bankrate.com	Those focused on payout amounts and longevity of funds	Models how long funds might last under different withdrawal scenarios Useful for retirement income planning	Less focused on growth with regular deposits; more on payout modeling
Pi Day Calculators piday.org	Those wanting present and future value calculations side-by-side	Calculates both present and future value of an annuity Explains annuity concepts with definitions and instructions	Fewer input options for payment frequency and compounding

Buyer's guide

How to choose a annuity calculator

When picking an annuity calculator, the most important factors are the type of annuity you are modeling (ordinary vs. due), the payment and compounding frequency, and whether you need to see a year-by-year schedule. If you are saving for retirement with regular deposits, look for a tool that tracks total contributions and total return alongside the final balance. The differences that matter most are the available compounding periods and whether the tool distinguishes between payments made at the start or end of each period, as this can noticeably change the projected total.

Questions

Annuity Calculator FAQ

What is the difference between an ordinary annuity and an annuity due?: An ordinary annuity assumes payments are made at the end of each period, while an annuity due assumes payments are made at the beginning. This timing affects the total future value because money invested earlier has more time to earn interest.
How does compounding frequency affect the final balance?: More frequent compounding (monthly or daily) results in a higher final balance than annual compounding, because interest is calculated and added to the principal more often, allowing subsequent interest to be earned on a slightly larger amount.
Can these calculators show me how long my money will last?: Some calculators, like the Bankrate tool, are designed to model payout phases and can show how long funds might last based on withdrawal amounts, but most basic annuity calculators focus on the accumulation phase and final balance rather than longevity of funds.
What information do I need to use an annuity calculator?: You typically need the starting principal or initial deposit, the amount and frequency of regular contributions, the interest rate or expected rate of return, and the total time period for the investment. Some tools also let you specify whether contributions are made at the beginning or end of each period.
Do any of these tools show a year-by-year breakdown of growth?: Calculator.net provides an accumulation schedule that breaks down the balance, interest earned, and additions for each year, which can help you see how your savings grow over time.

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