Investing in index funds has gained immense popularity among retail investors, thanks to their low costs and diversified risk profiles. These funds offer exposure to a broad selection of stocks while allowing investors to reap the rewards of overall market performance. One crucial aspect to consider when selecting an index fund is its expense ratio— the annual fee as a percentage of assets managed. This article dives into the seven best index funds with expense ratios under 0.05%, making them appealing options for savvy investors seeking financial growth. With low expense ratios directly affecting your returns, focusing on these funds can help maximise your investment gains over time. Choices like the Vanguard S&P 500 ETF (VOO) and Fidelity Zero Total Market Index Fund (FZROX) not only underscore the importance of low fees but also cater to various investment strategies, from broad market exposure to international diversification. By prioritising these funds in your portfolio, you can build a strong financial foundation while keeping costs to a minimum. Start your investing journey today!