The reasons for the rise of the ETF industry are numerous: intraday liquidity, (potentially) superior tax efficiency, and enhanced transparency relative to traditional actively-managed mutual funds have all contributed to the billions of dollars of inflows that these funds have seen in recent years. But the real attraction for most ETF investors is the reduced expenses these products offer, often only a fraction of the fees charged by mutual funds.

But between ETFs, expense ratios can vary significantly, ranging from 0.08% (for several Schwab ETFs) to a whopping 1.50% (for the DENT actively-managed ETF). For investors looking to minimize expenses and pursue an indexing strategy in favor of active management, investing in ETFs is only the first step. In order to assist cost-conscious investors, we’ve assembled the cheapest ETF options for almost every asset class and sub-asset class.