RD vs SIP in 2026: Which Builds a Bigger Corpus for Your Savings Goal?

By Nitish Bharadwaj · Published Jul 20, 2026 · 6 min

A recurring deposit and an equity SIP solve the same problem — saving a fixed amount every month — but sit at opposite ends of the risk spectrum. On ₹10,000 a month for 5 years, a 6.7% RD builds roughly ₹7.15 lakh, guaranteed and fully taxable each year. An equity SIP assuming a 12% long-term average builds roughly ₹8.25 lakh before tax, but that return is market-linked, not guaranteed. This guide covers the real numbers, the tax treatment on each, and why RD suits near-term goals while SIP suits long-term ones.

A recurring deposit and a SIP into a mutual fund solve the same basic problem — saving a fixed amount every month toward a goal — but they sit at opposite ends of the risk spectrum. One locks in a guaranteed rate the day you open the account. The other's return depends entirely on where the market goes. Here is the actual 5-year math on both, and which one fits which kind of goal.

How Each One Actually Works

A recurring deposit (RD) is a fixed monthly deposit at a bank or post office, at an interest rate locked in the day you open the account — like an FD, just built up in instalments instead of one lump sum. The rate stays fixed for the entire tenure regardless of what happens to interest rates afterward, interest compounds quarterly, and tenures typically run from 6 months to 10 years.

A Systematic Investment Plan (SIP) is a fixed monthly investment into mutual fund units — equity, debt, or hybrid. There is no fixed rate: your return depends on how the underlying fund's Net Asset Value moves over your investment period. You can redeem anytime, but each redemption is a taxable event, and short holding periods can trigger exit loads on some funds.

The 5-Year Math: ₹10,000 a Month

Which One Fits Your Actual Goal

An RD suits a goal with a fixed date and a number you cannot afford to miss — a wedding 18 months out, a school fee due next year, a car down payment you have already committed to. You know exactly what you will have on maturity day, and that certainty is the entire point. Our FD laddering guide covers the same fixed-return logic applied to lump sums instead of monthly instalments.

A SIP suits a goal far enough away that you can absorb a bad few years without changing your plans — retirement, a child's higher education a decade out, or wealth building with no fixed withdrawal date. The time in the market gives a market downturn room to recover before you actually need the money. Run your own numbers on our SIP calculator before committing to a monthly amount.

The Debt Fund Middle Ground Isn't What It Used to Be

Savers looking for something between an RD's certainty and an equity SIP's volatility often land on a debt fund SIP. That used to carry a real tax advantage — long-term capital gains on debt funds got indexation benefit. Since April 2023, that advantage is gone: debt fund gains are now taxed at your slab rate regardless of how long you hold them, which is close to how RD interest is taxed anyway. A debt fund SIP still carries market risk that an RD does not, so it no longer has a clear edge over a plain RD for a saver prioritising safety.

Bottom Line

Neither option is universally better — an RD is the right tool when you cannot afford the number to come in lower than planned, and a SIP is the right tool when you have years to let market swings even out. Many savers use both: RD or FD for the portion of a goal due within 2-3 years, and SIPs for everything further out. Comparing an RD against a post office RD is also worth doing before you pick where to open one, since post office and bank RD rates and rules differ. And if the guaranteed-return comparison you actually need is RD against a lump-sum FD rather than against a SIP, our RD vs FD guide works through the maturity-value gap between the two in detail.