Calculate the future and present value of regular payment streams. Plan retirement income, evaluate structured settlements, and understand how consistent contributions build wealth over time.
Enter annuity details and click Calculate to see results
An annuity is a series of equal payments made at regular intervals, representing one of the most important concepts in personal finance and retirement planning. Our comprehensive Annuity Calculator helps you understand both the future value (how much your payments will grow to) and present value (what a stream of payments is worth today) of regular payment streams.
There are two main types of annuities based on payment timing:
The future value of an annuity calculates how much your regular payments will grow to over time with compound interest. The formula is:
FV = PMT × [((1 + r)^n - 1) / r]
Where FV is future value, PMT is the payment amount, r is the interest rate per period, and n is the number of periods. For annuity due, multiply the result by (1 + r).
The present value of an annuity determines what a stream of future payments is worth in today's dollars. The formula is:
PV = PMT × [(1 - (1 + r)^-n) / r]
This is crucial for evaluating lottery winnings (lump sum vs. annual payments), pension buyouts, structured settlements, and determining how much you need to retire.
The frequency of payments significantly impacts annuity values. For the same annual amount, more frequent payments result in higher future values because money is invested sooner. For example:
Contributing $12,000 annually vs. $1,000 monthly ($12,000/year) at 6% for 20 years:
Example 1 - Retirement Savings: You contribute $500 monthly to your 401k for 30 years at 7% annual return. Future value: approximately $566,000. Your total contributions: $180,000. Interest earned: $386,000. The power of regular contributions and compound interest!
Example 2 - Pension Decision: You are offered $500,000 lump sum or $3,000 monthly for 20 years. At 5% discount rate, the present value of monthly payments is $449,500. The lump sum is better in this case.
Example 3 - College Savings: You save $300 monthly for 18 years at 6% for your child's education. Future value: approximately $105,000. Total contributions: $64,800. You earned $40,200 in interest!
When payments are made more frequently than annually, the effective annual rate is higher than the stated annual rate due to compounding. For example, 6% annual rate compounded monthly has an effective rate of 6.17%. This is the true annual return you earn and helps you compare investments with different compounding frequencies.
“This annuity calculator completely changed my perspective on retirement savings. Seeing how monthly contributions of just $500 can grow to over $200,000 in 20 years motivated me to start immediately. The comparison between ordinary annuity and annuity due was eye-opening!”
“I use this tool daily with clients to illustrate the power of regular savings. The visual charts make it easy to explain annuity concepts, and the ability to switch between ordinary and due annuities helps clients understand their pension options. An essential resource for financial planning.”
“We're saving for our daughter's college education, and this calculator helps us stay on track. We can see exactly how our monthly $300 contributions will grow over the next 15 years. The export feature is great for sharing our savings plan with family members who also contribute.”
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