There are 2 ways to pay for your SIP installments:
1. Auto-debit (preferred): Once you register your NACH, the SIP amount will be automatically debited from your account to the Mutual Fund companies. You can still stop and skip your SIPs upto 1 calendar day before your SIP date!
2. Payment link - If your NACH is not registered, you will get a payment link 3 days before the SIP date to pay for your SIP installment. You can pay via net banking or UPI.
Note: NACH is mandatory for rebalancing, as it enables us to re-invest the money (after it is redeemed into your bank account) into the recommended Mutual Funds automatically. Without NACH, we wouldn't be able to debit your account to do that.