What happens on the day
A SIP works through a bank mandate: on the SIP date the fund house asks your bank to debit the instalment. If the account does not hold enough, the debit is returned. The investment for that month does not happen.
That is the whole direct effect. Nothing is bought, no units are allotted, and your existing units are untouched.
What it costs
- One instalment of lost investing. In a ₹10,000 SIP over 10 years, one miss is 1 of 120 instalments. The loss is the growth that ₹10,000 would have earned from that date, which is small for a single miss but real for a repeated one.
- A bank charge. Banks usually levy a fee on a returned debit. It is set by your bank and varies, so look at its schedule of charges.
- No catch-up. The next month's debit is the normal amount. The missed money is not added on.
The risk of repeats
Fund houses set their own rules for failed instalments, and many cancel a SIP after a small number of misses in a row, commonly three. A cancelled SIP means setting up the mandate again, which can take days. If you notice a miss, top up the account before the next date rather than waiting.
How to avoid it
- Put the SIP date just after your salary credit. Our post on whether the SIP date matters shows the return effect of the date is small, so choose the one that is safe for your cash flow.
- Keep a one-month buffer in the account the mandate debits.
- Pause deliberately if money is tight, instead of letting debits fail. See what pausing or stopping a SIP costs.
If you missed one
Make a one-off purchase in the same fund for the missed amount if you want to stay on track. Then check your statement shows the SIP is still active. The SIP calculator will show what a month of missed investing does to a target.
This post is educational, not financial advice. Bank charges and failure rules differ by bank and fund house; check yours.
Frequently asked questions
Is the missed SIP instalment made up later?
No. The month's instalment is simply not invested, and the next debit is for the usual amount. To catch up, make a separate lump-sum purchase.
Will a bounced SIP hurt my credit score?
A SIP is an investment, not a loan, so there is no EMI default to report. Your bank may still charge a fee for the returned debit.
How many failures stop a SIP?
It varies by fund house; many cancel the SIP after a small number of consecutive failures, often three. Check your fund house's terms.
This is commentary on published data, not investment advice. WealthTicker is not a SEBI-registered adviser or distributor. Figures are WealthTicker’s own calculations from public data — AMFI’s fund NAVs and disclosures, NSE’s index and FII/DII files, and the fund houses’ monthly portfolios (how we calculate). They are as of the dates stated and can be revised by their source.
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