To understand how a SIP+ works, we need to first look at the Nippon India Mutual Fund’s Quant-based Proprietary Model, which determines an investor's monthly instalments and allocates it dynamically. The NIMF’s Quant-based Proprietary Model uses intuitive methods along with an algorithm that evaluates Valuation and Contra indicators to allocate the SIPs dynamically based on the current market conditions.

The model will derive a multiplier/ value based on these parameters and indicators. Using this multiplier, the current market conditions are analyzed; if the multiplier determines the markets to be bearish, it may be time to buy, and hence the investment amount may increase; if the markets are determined to be bullish, then it's time to hold the buying and hence the investment may reduce. This is how SIP+ works, intending to give the investors better returns.