The Wealth Wingwoman Audit
Audited by Valerie Vance"The Dutch retail investing scene produced two of Europe’s most recognizable broker names: DEGIRO, the discount brokerage juggernaut backed by flatexDEGIRO Bank AG, and BUX, the plucky Amsterdam fintech that brought fractional mobile trading to the continent before getting scooped up by banking giant ABN AMRO. On the surface, both claim to democratize investing for everyday Europeans. But once your capital hits their custody desks, you are dealing with two completely different fee engines. One charges you by the trade ticket and exchange connection, while the other leans on subscription tiers, variable custody fees, and currency markups. Choosing the wrong one means either bleeding cash to fractional transaction taxes or handing over an unforced annual percentage rake on your entire net worth. Let’s look at the plumbing."
The Tale of the Tape
BUX (now operating as BUX by ABN AMRO) is an agile wealth accumulator built for your smartphone. It targets modern index accumulators who want push-button automated monthly savings plans, fractional share ownership, and the institutional backing of a major Dutch bank without needing to understand market microstructure.
DEGIRO is an old-school discount brokerage machine. It gives you institutional breadth—access to over 30 international exchanges, European options, futures, and bond desks—wrapped in a no-frills, whole-share trading terminal. It doesn’t hold your hand with automated investment pies; it acts as a low-cost execution venue for self-directed investors.
The Fine Print Reality Check
Marketing teams pitch 'commission-free' or 'low-cost' trading. Professional traders evaluate the total cost of ownership: custody rakes, FX conversions, and exit liquidity.
- Custody Drag vs. Ticket Fees (The Compounding Trap): DEGIRO charges €0 in annual custody or percentage-based platform fees to hold stocks and ETFs. Instead, you pay transactionally: €1 handling fee on its Core Selection of ETFs, €3 total (€2 commission + €1 handling) on standard ETFs, and around €2 to €4.90 on individual shares. BUX structures its pricing across subscription tiers.
- BUX Basic (€0/month): Charges a 0.20% annual Variable Service Fee on your invested assets. On a €10,000 portfolio, that is €20 a year. On a €100,000 portfolio, BUX takes €200 every single year just for holding your shares.
- BUX Plus (€2.99/month): Adds up to €35.88 a year in fixed platform rent, but eliminates the 0.20% variable fee on assets up to €250k and unlocks 3 free Zero Orders per month. If you are a buy-and-hold accumulator holding €50,000+ in index ETFs, DEGIRO’s flat €1 ticket fee crushes BUX Basic’s 0.20% annual balance-sheet haircut.
- The Currency Conversion Skim (US Equities): If you trade US-listed stocks like Apple, Microsoft, or Nvidia, pay close attention to the foreign exchange spread. DEGIRO defaults to an AutoFX fee of 0.25% per round trip. BUX Basic charges a massive 0.75% FX markup on US stocks. Buying and selling €2,000 of US shares on BUX Basic costs you €30 in currency spread alone, compared to €10 on DEGIRO. (BUX only drops its FX fee to 0.25% if you pay for BUX Plus).
- Fractional Shares vs. Whole Shares: BUX allows you to buy fractional shares of stocks and ETFs from as little as €10, letting you deploy every spare euro immediately into automated monthly Investment Plans. DEGIRO does not support fractional shares. If an ETF trades at €120 and you have €200 to allocate, DEGIRO buys one share and leaves €80 sitting on the sidelines as dead uninvested cash.
- The Exchange Connectivity Fee: DEGIRO charges a €2.50 annual connectivity fee per exchange outside your home bourse (waived on Tradegate for Core ETFs). If you hold shares across the NYSE, NASDAQ, and Xetra, DEGIRO docks roughly €7.50 a year. BUX charges zero exchange connectivity fees.
- The Exit Gate (Portfolio Transfers): This is BUX’s biggest fine-print flaw. DEGIRO allows you to transfer your positions to another broker (charging roughly €20 per position). BUX historically does not support outgoing in-specie portfolio transfers. If you ever want to move your wealth from BUX to another broker, you are forced to liquidate your entire portfolio to cash, wire the money out, and rebuy—potentially triggering massive, unnecessary capital gains taxes depending on your local tax regime.
The Fine Print Translation
DEGIRO charges you at the tollbooth: €1 to €3 per trade, exchange connectivity fees, and a 0.25% FX clip. BUX Basic gives you commission-free entry, but taxes your balance sheet with a 0.20% annual custody fee and a heavy 0.75% FX spread—while locking you into their platform by refusing portfolio transfer-outs.
The Daily Driver Test
How these platforms function during your daily workflow separates an automated budgeting app from an active investment desk.
BUX delivers a streamlined, mobile-native experience backed by ABN AMRO Clearing. The standout feature is its Investment Plan: you pick a basket of fractional ETFs or stocks, set a monthly recurring deposit, and BUX executes the orders automatically. If you subscribe to BUX Plus (€2.99/mo) or Prime (€7.99/mo), you also earn 1.75% to 2.00% interest on uninvested cash. However, BUX provides minimal technical analysis tools, zero options trading, and lacks a serious desktop workspace.
DEGIRO feels utilitarian. The web interface is clean and functional, but it offers zero automated recurring investment plans—you must manually log in and place your orders every month. Where DEGIRO pulls rank is market access: you get real-time European and US market depth, structured products, government and corporate bonds, and European index options and futures on Eurex and Euronext. It is built for investors who want to construct complex, multi-asset portfolios across global bourses.
The Wingwoman Allocation
Don’t pick based on whoever has the slicker advertising campaign. Run the numbers against your portfolio size and operational habits:
- Deploy with BUX if: You are in the early accumulation phase with a portfolio under €15,000, where BUX Basic’s 0.20% variable fee costs less than €30 a year. You want an automated monthly ETF Investment Plan that buys fractional shares on autopilot. You value having your cash held directly within the Dutch banking system via ABN AMRO Clearing with €100,000 DGS protection.
- Deploy with DEGIRO if: You manage a portfolio over €25,000, where DEGIRO’s flat €1 to €3 trade fees are drastically cheaper than BUX’s ongoing subscription or percentage custody fees. You actively buy US-listed individual stocks, where DEGIRO’s 0.25% FX fee saves you 50 basis points on every trade compared to BUX Basic. You want access to European options, futures, and bonds alongside standard equities. You refuse to get trapped on a platform that won't let you transfer your shares to another broker down the road.
Your Wingwoman Move
If you have more than €20,000 sitting in BUX Basic, open your calculator right now. You are paying €40+ every single year in variable platform fees just for holding assets you already bought.
If your strategy is simply dollar-cost averaging into broad-market index ETFs like VWCE or IWDA, doing it manually once a month on DEGIRO costs you exactly €12 a year in total handling fees—with zero percentage-based custody drag. Stop letting recurring percentage fees eat into your future compounding. Go get paid.