Retirement Calculator — Universal (Currency Auto-Detect) | Estimate Your Corpus & Monthly Pension

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Estimate your retirement corpus and likely monthly pension quickly. Our universal calculator auto-detects your currency, factors inflation and expected returns, and provides a growth chart plus CSV export.

Retirement Calculator

Estimate how much money you will have at retirement and what monthly pension it could generate.

Choose your preferred currency (default is auto-detected).
Enter your present age (between 18–70).
The age at which you plan to retire.
Amount you have already saved for retirement.
How much you plan to save or invest each month.
Average yearly growth of your investments (before inflation).
Assumed average annual inflation rate (reduces future purchasing power).

What is this Retirement Calculator?

This Retirement Calculator is a universal online tool that projects how much money you will accumulate by the time you retire based on:

  • your current age and planned retirement age,
  • current savings,
  • monthly contributions,
  • expected annual investment return, and
  • expected inflation.

The calculator uses standard financial formulas (future value of a lump sum + future value of a regular annuity) and provides an inflation-adjusted corpus and an estimated monthly pension using a safe withdrawal rate.

Why this calculator is useful

Planning for retirement requires estimating how much you need to save today so your nest egg can support future spending. This calculator helps you:

  • visualize how contributions and returns grow over time,
  • compare different contribution or return scenarios,
  • see inflation-adjusted purchasing power at retirement, and
  • get a quick monthly pension estimate for budgeting.

Quick facts

Currency: Auto-detected from your browser/locale (shows $ / ₹ / € / £ etc.).
Chart: Growth chart of projected savings by year.
Export & Share: Export input values to CSV and create a shareable URL to prefill the calculator for others.

Real-life example

Example 1: Age 30, retirement at 60, current savings 10,000, monthly contribution 300, expected annual return 7%, inflation 3%.
Result: the calculator will show projected corpus at 60, inflation-adjusted corpus in today’s value, and an estimated monthly pension using the chosen withdrawal rate.

How to use the calculator

  1. Enter your current age and planned retirement age.
  2. Enter current savings and monthly contribution in the currency displayed.
  3. Set expected annual return (%) and expected inflation (%).
  4. Click Calculate to see: projected corpus, inflation-adjusted corpus, estimated monthly pension, and a growth chart.
  5. Use the Export to CSV button to save inputs or Get Shareable Link to share your scenario.

Formulas used (all formulas shown as plain math)

Let:

  • PV = current savings (present value)
  • P = monthly contribution
  • r = annual return rate (decimal), rm = r / 12 monthly return
  • n = total months until retirement = years × 12
  • i = annual inflation rate (decimal)
  • years = retirementAge − currentAge
Future value of current savings (FV_savings):
FV_savings = PV * (1 + rm)^n

Future value of monthly contributions (ordinary annuity) (FV_contrib):
FV_contrib = P * [ ( (1 + rm)^n − 1 ) / rm ]

Total projected corpus at retirement:
Total_Corpus = FV_savings + FV_contrib

Inflation-adjusted corpus (in today's purchasing power):
Inflation_Adjusted = Total_Corpus / (1 + i)^years

Estimated monthly pension (using safe withdrawal rule, e.g., 4%):
Annual_withdrawal = Inflation_Adjusted * 0.04
Monthly_pension = Annual_withdrawal / 12

Notes: if rm = 0 (zero return), the annuity formula simplifies to FV_contrib = P * n.

Tips for better planning

  • Increase monthly contributions gradually — even small annual raises help because of compounding.
  • Review expected return and inflation assumptions — conservative planning uses lower return and higher inflation.
  • Factor in employer contributions (e.g., pension/retirement funds) by adding them to monthly contributions.
  • Consider tax implications separately — this calculator does not model taxes or country-specific pension rules.
  • Re-run scenarios with different withdrawal rates (3%–5%) to see conservative vs aggressive income estimates.

Frequently Asked Questions (FAQ)

Q: Does this calculator include taxes and government pensions?

A: No. This is a generic savings growth model. It does not include country-specific tax rules, social security or government pension benefits. Add any pensions or tax-advantaged savings manually as part of your current savings or monthly contributions.

Q: What is the ‘safe withdrawal rate’ used?

A: The calculator uses a default 4% safe withdrawal rule to estimate annual pension from an inflation-adjusted corpus. You can interpret this as guidance; some retirees use 3% (more conservative) or 4–5% depending on market expectations and lifestyle.

Q: Why are results shown in a particular currency?

A: The calculator auto-detects your locale and shows currency formatting accordingly. Values are purely illustrative — treat them as your local currency equivalent.

Q: How does inflation adjustment work?

A: The projected corpus is divided by (1 + inflation)^years to estimate the equivalent purchasing power in today’s terms.

Q: Can I export or share my scenario?

A: Yes — use the Export to CSV button to save your inputs, or Get Shareable Link to copy a URL that pre-fills the calculator with your values.

Disclaimer

This calculator provides an estimate based on the inputs you provide. It is for informational purposes only and not financial advice. It does not account for taxes, fees, changing return rates over time, or guaranteed payouts. Consult a certified financial planner for personalized retirement planning and for incorporating country-specific rules, employer plans, or tax implications.