How Broker Fees Affect Your Long-Term Returns
A 0.25% fee sounds harmless. Over 20 years, it can quietly erase tens of thousands from your portfolio. See the real numbers — and find out which broker costs you the least.
Choose an investor profile below and watch how fee drag compounds across every major European broker — from the cheapest to the most expensive.
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Choosing the wrong broker costs up to
€21,229
over 20 years — the gap between the cheapest and most expensive broker for a €50,000 portfolio with €6,000/yr contributions
Average fee drag
€19,108
across all 8 brokers over 20yr
Zero-fee baseline
€439,457
what your portfolio would be worth with 0% fees
Best-case projection
€426,405
with Trading 212
Fee drag ranking — 20-year total cost by broker
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These benchmarks use public broker pricing. Connect your real accounts and TrackYourPortfol.io will show you exactly what you're paying — across every broker, in one dashboard.
Fee benchmarks are approximate and based on publicly available pricing as of March 2026. Actual fees vary by account type, trading volume, currency pairs, and specific products. Fund/ETF cost assumes a typical broad-market ETF TER of 0.20%. FX fees are modeled as a one-time conversion cost on new money. Transaction costs are estimated for a moderate trading profile (~12 trades/yr). Always verify with your broker's current fee schedule.
Why fee drag is the biggest silent threat to your portfolio
Most investors underestimate the cost of fees because they think in percentages. A 0.50% annual fee feels trivial next to a 7% return. But fees don't just take 0.50% of your money this year — they also remove the future compounding on that 0.50%, every single year, for as long as you invest.
This is fee drag: the compound erosion of returns caused by recurring investment costs. Over 20 or 30 years, the difference between a 0.20% total cost and a 0.70% total cost isn't 0.50% of your portfolio — it's tens of thousands of euros in lost wealth. The numbers get larger with bigger portfolios, longer time horizons, and higher contribution rates, because compounding amplifies the gap in both directions.
The four fees that drive the biggest drag
Custody and platform fees are the quietest drag. Some brokers charge an annual percentage just to hold your assets. Saxo Bank charges 0.25% per year; Revolut charges 0.12%. Others — DEGIRO, Interactive Brokers, Trading 212 — charge nothing for custody. On a €100,000 portfolio, a 0.25% custody fee costs €250 per year before compounding.
FX conversion fees hit European investors especially hard. Every time you buy a US-listed ETF or stock, your euros are converted to dollars. FX fees range from 0.002% at Interactive Brokers to 0.50% at eToro. On regular monthly contributions, this adds up quickly.
Fund expense ratios (TER) are charged by the fund, not the broker, but they're part of your total cost. A typical broad-market index ETF charges around 0.20% per year. Actively managed funds can charge 0.50–1.50% or more.
Transaction commissions are the most visible fee, but often the smallest in total impact for passive investors. Trading 212 and eToro charge zero commission. DEGIRO and Interactive Brokers charge very small per-trade amounts. For a typical passive investor making 12 trades per year, commissions are a minor cost compared to custody and FX.
Three things you can do to reduce fee drag
1. Know your actual total cost. Most investors only know their commissions. Use the hidden fees calculator to estimate the full cost of your current setup — including custody, FX, fund fees, and transaction costs.
2. Compare before you commit. The difference between brokers is real and measurable. Use the benchmarks above or the broker fee comparison tool to see how two specific brokers stack up for your portfolio size and strategy.
3. Track what you actually pay. Estimates are useful, but nothing beats seeing your real fees. Connect your broker accounts to TrackYourPortfol.io and get a clear view of your actual costs, real returns, and portfolio performance — all in one place.
Frequently asked questions
How much do broker fees reduce my investment returns?
On a €50,000 portfolio with €6,000 annual contributions and 7% gross return, broker fees typically cost between €8,000 and €40,000 over 20 years depending on your broker. The difference between the cheapest and most expensive European broker can exceed €25,000 in lost returns.
What is fee drag?
Fee drag is the compound reduction in portfolio returns caused by investment fees over time. A 1% annual fee doesn't just cost 1% — it also eliminates the future growth on that 1%. Over 20-30 years, this compounding effect means fees consume far more of your wealth than the stated percentage suggests.
Which broker has the lowest fee drag for European investors?
For most passive ETF investors in Europe, Interactive Brokers and Trading 212 consistently produce the lowest total fee drag. Interactive Brokers has the lowest FX fees (0.002%), while Trading 212 offers zero commissions with a low 0.15% FX fee. The best choice depends on your portfolio size and currency needs.
What fees should I include when comparing brokers?
A complete broker cost comparison should include: custody/platform fees (annual % of portfolio), FX conversion fees (when buying foreign-currency assets), fund expense ratios (ETF TER), and transaction commissions. Most investors only look at commissions, missing the larger impact of custody and FX fees.
Does switching brokers save money if my portfolio is small?
Yes, and the savings compound. Even on a €10,000 portfolio, choosing a low-cost broker over a high-cost one can save several thousand euros over 20 years thanks to compounding. The earlier you switch, the more the savings compound in your favor.