Formula used
Uses monthly annuity-due compounding for each return assumption, then applies the entered illustrative tax rate only to estimated gains at withdrawal.
Example calculation
Changing either expected return or the assumed tax rate can materially alter the post-tax comparison over a long holding period.
A product-route comparison, not a generic SIP forecast
This calculator exists for the specific NPS Tier 2 versus mutual-fund decision. The generic SIP calculator intentionally avoids product-specific tax assumptions and should remain the destination for a plain monthly-investment projection.
Source and methodology
Last reviewed: August 2026
This calculator uses the formula and assumptions described on this page. Uses monthly annuity-due compounding for each return assumption, then applies the entered illustrative tax rate only to estimated gains at withdrawal. Values are calculated in-browser from user-entered inputs and are not saved by default. Verify tax, regulatory, lender, scheme or product rules with the relevant official source where applicable.
Educational estimate only. RupeeKit does not provide personalized financial, investment, legal, tax or loan advice.
Related calculators and guides
You can cross-check this estimate using: salary in-hand calculator, Old vs New Tax Regime Calculator, 80C deduction calculator, EMI calculator, ITR-2 filing guide, emergency fund guide.
When this tool is useful
- When you want a fast estimate before making a financial or salary decision.
- When you want to compare different assumptions in seconds.
- When you want to understand the formula behind the result.
