Quick examples
Corpus Needed
$44.05M
Monthly Savings Needed
$8,318
Future Monthly Expense
$287,175
Current Savings at Retirement
$14.98M
Retirement Calculator — Quick Reference
The Retirement Calculator is an online tool that plan your retirement corpus based on current savings, contributions, and expected returns. Everything for the Retirement Calculator is on this page: the interactive calculator, the formula, a worked example, step-by-step guidance, and frequently asked questions — no other pages required.
At a glance
- Main inputs
- Current age
- Retirement age
- Monthly expenses or contributions
- Main outputs
- Corpus required
- Monthly savings needed
- Projected balance
Direct answers
What is the Retirement Calculator?
The Retirement Calculator is an online tool that plan your retirement corpus based on current savings, contributions, and expected returns.
What formula does the Retirement Calculator use?
Corpus = FV of current savings + FV of monthly SIP
How does the Retirement Calculator work?
Enter current age, retirement age, monthly expenses, inflation rate, and expected returns to calculate required retirement corpus.
Formula Used
The equation below is what this calculator applies. Variable definitions follow when symbols are used.
Equation
Corpus = FV of current savings + FV of monthly SIP
Additional rules
- required corpus ≈ annual expenses × 25 (4% rule variant)
Worked Example: Age 30, retire at 60, $50,000/month expenses, 6% inflation
Sample inputs and the results this calculator produces for the scenario below.
Inputs
- Current Age
- 30
- Retirement Age
- 60
- Monthly Expenses
- $50,000
Results
- Corpus Needed
- ~4.5–5.5 Cr
- Monthly SIP Needed
- Varies by return assumption
Inflation dramatically increases retirement needs. Start early — a 25-year SIP needs far less monthly than a 10-year catch-up.
How Retirement Calculator Works
Enter current age, retirement age, monthly expenses, inflation rate, and expected returns to calculate required retirement corpus.
What to enter
Use the calculator above to set your amounts, rates, and tenure. Results update as you move sliders or type values — switch currency if you are planning in USD, INR, or another supported unit.
Step-by-step
- Open the Retirement Calculator and enter your amounts, rates, and time period in the input fields.
- Review the results panel — totals update instantly when you change any value.
- Compare the worked example and formula below to verify the math matches your scenario.
- Read the FAQs for common edge cases, tax notes, and planning tips specific to this calculator.
Retirement — Frequently Asked Questions
Each question is answered directly below. Expand any item for the full response.
What does a retirement calculator really estimate?
It estimates the corpus needed so your investments can support post-retirement spending for many years. The answer depends more on inflation, spending needs, and years in retirement than on today's salary alone.
Why is inflation so important in retirement planning?
A retirement that is 20 or 25 years away can be derailed by underestimating future expenses. Even moderate inflation can double living costs over a long horizon, especially for healthcare and housing.
What withdrawal rate is practical to test?
Many planners test a 3% to 4% initial withdrawal range, then adjust for inflation and market conditions. The safer number depends on asset mix, longevity, and how flexible your expenses are.
How can I improve retirement readiness without chasing high returns?
Increase savings rate, step up contributions annually, and keep goal assumptions realistic instead of simply plugging in a very high return. Consistency and time usually matter more than finding one perfect product.
Disclaimer
- This calculator gives you an estimate only. It is not a promise of exact results.
- This is general information, not personal financial, tax, or legal advice.
- You are responsible for your own decisions. Talk to a qualified professional when it matters.
- Pension and retirement rules vary by country and employer. Plans can change over time.