Monthly income needs a monthly comparison
A ₹5,000 monthly SIP over 15 years invests ₹9 lakh gradually. Comparing it with a ₹9 lakh FD placed today gives the FD access to money that the household may not yet have. For a household saving from salary, compare identical monthly deposits first.
The Finpockett comparison uses a bank-deposit scenario funded on the same monthly basis. It is a cash-flow benchmark rather than a quote for a particular bank’s recurring-deposit contract. Banks may use quarterly compounding, specific instalment dates and their own maturity conventions.
Taxes occur at different times
Bank interest can create tax liability as it accrues, even when cash is not paid out. Fund-gain tax generally depends on sale, asset classification and each purchase lot’s holding period. An aggregate exit-tax rate is useful for a scenario but does not replace lot-wise tax calculation.
The bank scenario applies an annual interest-tax drag. The SIP scenario uses an entered exit rate and remaining exemption against aggregate modelled gains. Cess is included in those assumed rates; surcharge, basic-exemption adjustment and detailed loss offsets are outside this comparison.
A larger modelled balance does not settle suitability
Market risk, product protection, liquidity and the date when money is needed differ. For a near-term fixed bill, the uncertainty of a market balance matters more than a high illustrative maturity value. For a long goal, a bank balance may be more predictable while falling behind the goal’s inflation-adjusted cost.