A systematic investment plan (SIP) is a plan in which investors make regular and equal payments into a mutual fund, trading account or retirement account. An SIP allows you to invest a certain amount at a regular interval (weekly, monthly, quarterly). In essence, it is a planned way of saving and building wealth, and this aspect has made it popular among many investors. However, there are some myths associated with SIPs, which can be misleading. Here’s a look at what they are and how to avoid them.