{"slug":"index-fund-vs-active-fund","question":"Index Fund vs Active Fund","answer":"Index funds track market benchmarks with lower fees (0.03-0.20% annually) and consistently outperform 85-90% of actively managed funds over 15+ years, while active funds employ managers attempting to beat the market but charge 0.5-2.0% annually and rarely sustain outperformance.","answer_curated":true,"verdict":"Choose an index fund if you want reliable market-matching returns with minimal fees, prefer a hands-off approach, and have 15+ year investment horizon — data shows 85-90% of active funds underperform after fees. Choose an active fund only if you have exceptional conviction in a specific manager's track record, seek specialized sector exposure, or need flexibility for tactical adjustments, though understand the odds are against sustained outperformance.","keyDifferences":[{"label":"Average Annual Fee","winner":"a","entityAValue":"0.03-0.20%","entityBValue":"0.5-2.0%"},{"label":"15-Year Outperformance Rate (vs S&P 500)","winner":"a","entityAValue":"Matches benchmark by definition","entityBValue":"10-15% of funds beat index after fees"},{"label":"Management Approach","winner":"tie","entityAValue":"Passive, rule-based replication","entityBValue":"Active stock/bond selection by managers"},{"label":"Tax Efficiency (Average Annual Turnover)","winner":"a","entityAValue":"5-15% turnover","entityBValue":"50-100% turnover"},{"label":"Expense Ratio Impact (20-year growth on $100k at 7% return)","winner":"a","entityAValue":"$376,193 (0.10% fee)","entityBValue":"$283,476 (1.00% fee)"}],"winner":{"slug":"index-fund","name":"Index Fund"},"confidence":"high","entities":[{"name":"Index Fund","slug":"index-fund","url":"https://www.aversusb.net/entity/index-fund","alternativesUrl":"https://www.aversusb.net/api/v1/alternatives/index-fund"},{"name":"Active Fund","slug":"active-fund","url":"https://www.aversusb.net/entity/active-fund","alternativesUrl":"https://www.aversusb.net/api/v1/alternatives/active-fund"}],"faqs":[{"question":"Why do active funds underperform index funds so consistently?","answer":"Active funds underperform primarily due to fees. If an active manager generates 1.5% of alpha (excess returns) before fees but charges 1.0% in expenses, investors net only 0.5% outperformance — less than most index funds' 0.10% fee. Over 20 years on $100k, a 0.5% advantage compounds to only $25,000 vs. a 0.90% disadvantage from fee drag. SPIVA data (2024) shows 85-90% of active funds fail to beat their benchmark after fees over 15+ year periods, with even worse persistence for outperformers year-to-year (only 35-40% beat benchmarks repeatedly)."},{"question":"Are there any active funds worth buying?","answer":"Statistically, very few. However, active funds may be worth considering in inefficient markets like emerging markets, small-cap value, or high-yield bonds where information asymmetries create alpha opportunities. Specialized sectors (real estate, commodities) sometimes justify active management. The critical factor: examine a manager's audited 15-year track record (not 3-5 year periods which may reflect luck), verify they outperformed after fees and taxes, and confirm their strategy hasn't changed. Most investors would be better served by core index holdings with small allocations to active funds if truly convinced by manager track record."},{"question":"Do index funds guarantee matching the market?","answer":"Not perfectly. Index funds slightly underperform their benchmark by their expense ratio (typically 0.03-0.20% annually). A fund tracking the S&P 500 with a 0.10% fee will return approximately 0.10% less per year than the S&P 500 itself. However, this predictable drag is far superior to the unpredictable underperformance of 85% of active funds. Over 20 years, this small fee creates only $3,800 of drag on $100k, whereas an active fund with 1.00% fees creates $92,717 of drag."}],"attribution":{"source":"A Versus B","url":"https://www.aversusb.net/compare/index-fund-vs-active-fund","license":"CC BY 4.0","citationFormat":"According to A Versus B (https://www.aversusb.net/compare/index-fund-vs-active-fund), Index funds track market benchmarks with lower fees (0.03-0.20% annually) and consistently outperform 85-90% of actively managed funds over 15+ years, while active funds employ managers attempting to ","dateModified":"2026-07-03T18:01:37.336Z"},"relatedQuestionsUrl":"https://www.aversusb.net/api/faq/index-fund-vs-active-fund","relatedComparisonsUrl":"https://www.aversusb.net/api/v1/related/index-fund-vs-active-fund","knowledgeGraphUrl":"https://www.aversusb.net/api/knowledge-graph/index-fund-vs-active-fund","claimReviewSchema":{"@context":"https://schema.org","@type":"ClaimReview","@id":"https://www.aversusb.net/compare/index-fund-vs-active-fund#claimreview","url":"https://www.aversusb.net/compare/index-fund-vs-active-fund","inLanguage":"en-US","isAccessibleForFree":true,"conditionsOfAccess":"Free","claimReviewed":"Index Fund vs Active Fund","reviewBody":"Index funds track market benchmarks with lower fees (0.03-0.20% annually) and consistently outperform 85-90% of actively managed funds over 15+ years, while active funds employ managers attempting to beat the market but charge 0.5-2.0% annually and rarely sustain outperformance.","datePublished":"2026-03-31T21:42:18.250Z","dateModified":"2026-07-03T18:01:37.336Z","reviewRating":{"@type":"Rating","ratingValue":5,"worstRating":1,"bestRating":5,"alternateName":"High Confidence"},"author":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B","url":"https://www.aversusb.net"},"itemReviewed":{"@type":"WebPage","@id":"https://www.aversusb.net/compare/index-fund-vs-active-fund","url":"https://www.aversusb.net/compare/index-fund-vs-active-fund","name":"Index Fund vs Active Fund","inLanguage":"en-US"}}}