Expense Ratio Calculator
The Expense Ratio Calculator shows how fund management fees eat into your investment returns over time. Enter a fund's expense ratio and your investment amount to see the annual cost, 10-year impact, and comparison against index fund alternatives.
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What is an Expense Ratio?
An expense ratio is the annual fee charged by a mutual fund or ETF to cover operating costs, expressed as a percentage of assets under management. A 0.50% expense ratio means you pay $50 per year for every $10,000 invested. This fee is deducted automatically from fund returns.
Expense ratios range from 0.03% for passive index funds (like Vanguard S&P 500) to over 2% for actively managed specialty funds. Over decades, even small differences in expense ratios compound into massive cost differences — a 1% higher fee can reduce your portfolio by 25% over 30 years.
Formules et Équations utilisées
Ce calculateur s'appuie sur 5 équations fondamentales :
1 Annual Fee Calculation ▼
A $100,000 investment in a fund with 0.75% expense ratio costs $750 per year in fees.
2 Fee Impact Over Time ▼
This calculates the total return difference caused by the expense ratio over multiple years.
3 Effective Return After Fees ▼
A fund earning 10% gross with a 1.5% expense ratio delivers 8.5% net return to investors.
Comment utiliser ce calculateur
Pour utiliser ce Calculateur de Ratio, suivez ces 3 étapes :
Saisir les Valeurs
Saisissez les valeurs de ratio connues dans les champs. Laissez un champ vide — c'est la valeur manquante que le calculateur va chercher à résoudre.
Choisir le Mode
Sélectionnez le mode de ratio — Résoudre, Simplifier ou Mettre à l'échelle. Chaque mode applique des formules différentes à vos valeurs.
Obtenir les Résultats
Cliquez sur Calculer. L'écran de résultats affiche la réponse avec une barre de ratio interactive, un diagramme circulaire et le détail des calculs.
Exemples Pratiques et Solutions Étape par Étape
Voici 3 exemples de calculs résolus avec les étapes détaillées grâce à ce calculateur :
Saisie 1 $50,000 in a fund with 0.85% expense ratio
Saisie 2 Compare 0.10% vs 1.00% over 30 years on $100K
Saisie 3 What expense ratio keeps fees under $200/year?
Foire Aux Questions
What is a good expense ratio? ▼
For index funds, 0.03%-0.20% is excellent. For actively managed funds, under 0.75% is good. Above 1.5% is expensive and hard to justify unless the fund consistently outperforms its benchmark after fees.
How are expense ratios charged? ▼
Expense ratios are deducted daily from the fund's net asset value (NAV). You don't receive a bill — the fee is automatically reflected in lower fund returns. A 0.50% annual ER means about 0.00137% is deducted each day.
Do ETFs have lower expense ratios than mutual funds? ▼
Generally yes. The average ETF expense ratio is about 0.16%, while the average mutual fund charges about 0.47%. Passive index ETFs can be as low as 0.03%.
Should I switch funds to save on expense ratio? ▼
Consider switching if the fee savings are significant (0.5%+ difference), the fund isn't outperforming, and there are no exit fees or tax consequences. Even 0.3% savings on a $200K portfolio saves $600/year.
Do expense ratios include trading costs? ▼
No. Expense ratios cover management fees, administration, and marketing costs (12b-1 fees). Trading costs (commissions, bid-ask spreads) are separate and reflected in fund returns but not the stated expense ratio.