Annuity Calculator
Calculate future value, present value, or payment for regular investment streams
Real-Life Guide to Using the Annuity Calculator
Annuity income stream calculator. Use the examples and checks below to turn the number into a practical decision.
When this calculator is useful
Someone at or near retirement — often an NPS subscriber where 40% or more of the corpus is mandatorily annuitized, or anyone with a lump sum from a maturing insurance or PF payout — who wants to see what income a given lump sum will generate for life.
For most people, the best way to use the Annuity Calculator is to try the real case first, then change one input at a time. That makes the trade-off visible. For example, with a loan calculator you can change tenure while keeping the same rate; with an investment calculator you can change return assumption while keeping the same monthly contribution; with a health, education or measurement calculator you can check how much one input changes the final category.
The result should answer a practical question: Can I afford this? How much should I save? Is this score enough? Is this measurement within range? What is the safer or cheaper option? If the output does not answer the decision clearly, adjust the inputs until the scenario matches your real situation.
Practical Advice
Use the Annuity Calculator as a planning tool, not just a number generator. Write down the inputs you used, because the final answer is meaningful only when you remember the assumptions behind it.
If the decision affects money, health, tax, safety, academics or legal compliance, keep a second check ready. That second check may be a bank quote, payslip, official rule, prescription, site measurement, mark sheet or invoice.
Common Mistakes
- Assuming the annuity rate used will match whatever rate was quoted a year ago — rates offered by insurers move with prevailing interest rates and are locked in only at the actual time of purchase, not when the calculator was first run.
- Choosing "life annuity with return of purchase price" but expecting the same monthly payout as "life annuity without return of purchase price" — the latter pays noticeably more each month since the insurer does not have to return the principal to a nominee later.
- Forgetting that annuity income is fully taxable at slab rate every year it is received, unlike PPF or SSY maturity, which can make the post-tax income meaningfully lower than the headline monthly figure.
- Comparing a joint-life annuity to a single-life one on the same corpus without expecting a lower monthly payout — joint-life annuities pay less because the insurer expects a potentially longer combined payout period.
- Assuming payouts adjust for inflation automatically, when a standard annuity is flat for life unless an "increasing annuity" option is specifically chosen, which starts lower but rises over time.
How to Interpret Results
The monthly or annual income figure shown is fixed for life once the annuity is actually purchased at the prevailing rate — compare it against your expected future monthly expenses in retirement, not today's expenses, since a flat payout steadily loses purchasing power to inflation.
A good interpretation looks at both the main result and the supporting values. If a page shows totals, ratios, categories, schedules or warnings, read those together instead of focusing only on the biggest number.
Annuity Calculator FAQs
Useful answers for interpreting the output, avoiding mistakes and using the result responsibly.
What is an Annuity?
An annuity is a series of equal payments made at regular intervals. An ordinary annuity pays at the end of each period (like most loans and investments); an annuity due pays at the beginning (like rent). SIP investments are a common form of annuity.
Future Value (FV) tells you how much your regular payments will grow to. Present Value (PV) tells you the current worth of future payment streams (used in loan pricing and pension valuation). Payment mode helps you find what you need to invest regularly to reach a goal.