What Is a Weekly SIP?
A weekly SIP (Systematic Investment Plan) is a variation of the standard monthly SIP where a fixed amount is invested in a mutual fund once every week rather than once a month. If the monthly SIP is Rs 4,000, the equivalent weekly SIP would be approximately Rs 1,000 per week (4 instalments per month). Weekly SIPs offer more frequent rupee cost averaging than monthly SIPs but achieve similar long-term returns with slightly higher administrative complexity.
How Weekly SIP Works
When you set up a weekly SIP on, say, every Monday, the specified amount (e.g., Rs 1,000) is debited from your bank account on each Monday and used to purchase mutual fund units at that week's NAV. Over a month with four Mondays, you invest Rs 4,000 total. Some months may have five Mondays, resulting in Rs 5,000 investment that month, so the annual total may vary slightly from 12x monthly SIP equivalent.
Return Difference Between Weekly and Monthly SIP
Empirically, the difference in XIRR between weekly and monthly SIP over a 10-year period is less than 0.5-1%. While weekly SIPs average NAV over 52 price points per year vs. 12 for monthly SIP, the Indian equity market's volatility smooths out over time in both cases. The incremental averaging benefit of weekly SIP does not justify the added complexity for most retail investors.
Who Benefits from Weekly SIP
- Business owners or freelancers with weekly cash flows who prefer to invest as income comes in.
- Investors who want to invest more frequently to psychologically reduce the impact of any single market event.
- Investors with smaller amounts (Rs 500-1,000 per week) who prefer weekly cadence to maintain investment habit.
Setting Up a Weekly SIP
Most major AMCs support weekly SIP with a minimum amount of Rs 500 per week. Platforms like Zerodha Coin, Groww, and direct AMC portals offer weekly SIP setup during the SIP registration process. Select "weekly" as the frequency and choose your preferred day of the week (Monday through Friday).
Key Takeaway
Weekly SIP provides more frequent averaging than monthly SIP with negligible return improvement over the long run. For most Indian investors, the simplicity of monthly SIP aligned to salary credit makes it the preferred choice. Weekly SIP suits business owners and those who prefer a closer connection between income receipt and investment. Use the Lemonn app to explore SIP frequency options and choose the one that best fits your cash flow pattern.
