RD vs FD vs SIP: Which Monthly Savings Tool is Best?

You save ₹10,000/month. Should it go into RD, FD sweep, or SIP? The answer depends entirely on your time horizon.

1.The 5-year comparison on ₹10,000/month

RD at 7.0%: maturity = **₹7,19,048**. Monthly FD sweep at 7.25% (auto-sweep savings account): approximately **₹7,22,300** — marginally better because each FD gets the full rate for its tenure. SIP in equity at 12% CAGR: **₹8,16,697**. SIP in debt fund at 7.5%: **₹7,26,400**. Over 5 years, equities win but carry risk. RD and FD are nearly identical for risk-free parking.

2.Why time horizon is the deciding factor

For 1-2 years: RD or FD sweep — guaranteed, simple, predictable. For 3-5 years: RD for fixed goals + SIP in balanced advantage funds for flexible goals. For 5-10 years: SIP in equity mutual funds — historical data shows no negative returns over any 7+ year period in India. The worst 5-year SIP CAGR in Indian equity (since 2000) was 3.2% — still positive but barely above RD.

3.The auto-sweep account advantage

Modern savings accounts (ICICI iWish, HDFC sweep-in FD) automatically convert surplus into FDs while keeping money accessible. You get FD rates (6.5-7.25%) with savings account liquidity. For emergency funds and short-term goals, auto-sweep beats RD because there's no penalty for "breaking" — the FD is simply broken at maturity rate minus penalty.

4.Key takeaway

RD is best for a specific short-term goal where you want discipline and certainty. FD sweep is better for money you might need. SIP wins for anything beyond 5 years. Don't pick one — use all three for different goals. Use our RD calculator and SIP calculator side by side to compare for your specific amount and horizon.