Data Source and Methodology
- Regulatory alignment: SEBI calculators & guidance (e.g., SEBI Calculators, SIP example) use standard time-value-of-money projections for investor education. All calculations strictly follow these formulas and data conventions.
- Industry parity: Major Indian investor resources (e.g., MutualFundsSahiHai Lumpsum, SBI Securities Lumpsum) compute FV from a one-time principal, a return assumption, and a tenure.
- Core formula reference: Future Value identity \(FV = PV\,(1+r)^n\) as established in standard finance texts and practitioner references (e.g., a third-party source’s Future Value explainer). All calculations strictly follow the formulas and data provided by this source.
The Formula Explained
Per-period rate from annual CAGR \(r\) and compounding frequency \(m\):
Future value of a lumpsum compounded for \(N\) periods:
Inflation-adjusted (real) future value using annual inflation \(\pi\) and years \(T\):
Required CAGR for a target corpus (Goal-Seek):
For robustness with different compounding bases, the tool also solves numerically.
Glossary of Variables
| Symbol / Field | Meaning |
|---|---|
| \(P\) (Principal) | Initial one-time investment amount. |
| \(m\) (Compounding frequency) | Compounds per year (1, 4, 12, 365). |
| \(r\) (Annual return) | Expected annual compound return (CAGR), decimal. |
| \(i\) (Per-period rate) | \(i=(1+r)^{1/m}-1\). |
| \(T\) (Years) | Investment horizon in years; \(N=m\cdot T\). |
| \(\pi\) (Inflation) | Annual inflation rate used to compute real value. |
How It Works: A Step-by-Step Example
Inputs: \(P=\$10{,}000\); \(r=12\%\) annually; \(T=10\) years; monthly compounding (\(m=12\)); inflation \(\pi=4\%\).
- Per-period rate \(i=(1+0.12)^{1/12}-1\approx 0.009488\) (0.9488% per month).
- Total periods \(N=120\).
- Nominal future value \(FV=10{,}000\cdot(1+i)^{120}\approx \$31{,}058\).
- Real (purchasing-power) value \(FV_{\text{real}}=FV/(1+0.04)^{10}\approx FV/1.4802\approx \$20{,}986\).
Frequently Asked Questions (FAQ)
Is monthly compounding always better than annual?
Higher compounding frequency slightly increases the corpus for the same annual CAGR, but differences narrow at modest rates and horizons.
How accurate is the projection?
It’s a mathematical projection assuming constant returns and inflation. Markets vary; treat results as estimates.
Can I compare nominal and real outcomes?
Yes—this tool shows both nominal FV and inflation-adjusted (real) FV for purchasing power context.
Does the calculator include taxes and fees?
No. Results are pre-tax and exclude fund expenses.
What if I need exactly \$X after Y years?
Enable Goal-Seek and enter your target \(FV\); the tool solves for the required annual CAGR.
Formula (LaTeX) + variables + units
','\
i = (1+r)^{1/m} - 1
FV = P\,(1+i)^{N}, \quad N = m\cdot T
FV_{\text{real}} = \frac{FV}{(1+\pi)^{T}}
r = \left(\left(\frac{FV_{\text{target}}}{P}\right)^{\tfrac{1}{N}} - 1\right)^{m} - 1
Per-period rate from annual CAGR \(r\) and compounding frequency \(m\): \[ i = (1+r)^{1/m} - 1 \] Future value of a lumpsum compounded for \(N\) periods: \[ FV = P\,(1+i)^{N}, \quad N = m\cdot T \] Inflation-adjusted (real) future value using annual inflation \(\pi\) and years \(T\): \[ FV_{\text{real}} = \frac{FV}{(1+\pi)^{T}} \] Required CAGR for a target corpus (Goal-Seek): \[ r = \left(\left(\frac{FV_{\text{target}}}{P}\right)^{\tfrac{1}{N}} - 1\right)^{m} - 1 \] For robustness with different compounding bases, the tool also solves numerically.
- T = property tax (annual or monthly depending on input) (currency)
- Home — calcdomain.com · Accessed 2026-01-19
https://calcdomain.com/ - Finance — calcdomain.com · Accessed 2026-01-19
https://calcdomain.com/finance - Investment — calcdomain.com · Accessed 2026-01-19
https://calcdomain.com/subcategories/finance-investment - SEBI Calculators — investor.sebi.gov.in · Accessed 2026-01-19
https://investor.sebi.gov.in/calculators/index.html - MutualFundsSahiHai Lumpsum — mutualfundssahihai.com · Accessed 2026-01-19
https://www.mutualfundssahihai.com/en/calculators/lumpsum-investment-calculator - SBI Securities Lumpsum — sbisecurities.in · Accessed 2026-01-19
https://www.sbisecurities.in/calculators/lumpsum-calculator
Last code update: 2026-01-19
- Initial audit spec draft generated from HTML extraction (review required).
- Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
- Confirm sources are authoritative and relevant to the calculator methodology.