Before You Start
- Basic understanding of what ETFs are and how they work
- Existing ETF portfolio (or a plan to build one)
- Access to a European broker (e.g., Trade Republic, DEGIRO)
- Awareness of your target asset allocation (e.g., 70% equities, 30% bonds)
- Comfort using web or mobile investment platforms
Time needed: 30–60 minutes per rebalancing session
What you'll need: Broker account login, access to portfolio overview, calculator or spreadsheet
ETF portfolio rebalancing in 2026 is more than just a maintenance routine—it's a disciplined way to keep your investments aligned with your goals, manage risk, and avoid emotional decision-making. This guide provides step-by-step instructions, EUR-based examples, and practical tips for European investors using brokers like Trade Republic and DEGIRO.
Why Rebalance Your ETF Portfolio?
Over time, different assets in your ETF portfolio will grow at different rates. For example, if European stocks outperform bonds, your equity allocation could creep above your target. Rebalancing brings your portfolio back in line with your chosen risk level.
- Reduces risk: Prevents your portfolio from becoming too aggressive or too conservative.
- Enforces discipline: Stops emotions from dictating your investment choices.
- Potentially enhances returns: By periodically selling high and buying low, you may benefit from volatility.
For a foundational guide on building a European ETF portfolio, see ETF Investing for Beginners in Europe: The 2026 Step-by-Step How-To Guide.
When Should You Rebalance?
- Time-based: Every 6 or 12 months (most common for DIY investors)
- Threshold-based: When an asset drifts more than a set % from your target (e.g., 5%)
- Event-based: After major life events or large deposits/withdrawals
Pro Tip
For most Europeans, an annual or semi-annual schedule strikes a good balance between discipline and minimizing costs. Threshold-based rebalancing is ideal if you monitor your portfolio regularly.
Step 1: Review Your Target Allocation
What to do: Decide or revisit your desired mix of asset classes (e.g., 70% equity ETFs, 30% bond ETFs).
Why it matters: Your target allocation reflects your risk tolerance, time horizon, and goals. Rebalancing only makes sense if you're clear on this.
What can go wrong: If you skip this step, you might “rebalance” to an outdated or inappropriate mix. This can increase your risk or reduce returns.
Example: You’re a 35-year-old investor targeting 70% global equity ETFs (e.g., iShares Core MSCI World UCITS ETF (EUNL)) and 30% eurozone bond ETFs (e.g., Xtrackers II Eurozone Government Bond UCITS ETF (DBXZ)).
Step 2: Check Your Current Portfolio Allocation
What to do: Log in to your broker and view your portfolio’s current asset allocation. Most platforms show % by asset/ETF.
- In Trade Republic: Tap Portfolio → Scroll to see each ETF’s value → Calculate each as a % of total portfolio value.
- In DEGIRO: Go to Dashboard → Portfolio → Export to CSV or use the allocation pie chart.
Why it matters: You need accurate numbers to know what (and how much) to buy or sell.
What can go wrong: Forgetting to include cash or recent dividends can skew your calculations.
Example:
- iShares Core MSCI World ETF: €7,800
- Xtrackers Eurozone Bond ETF: €2,600
- Total portfolio: €10,400
- Current allocation: 75% equities, 25% bonds
Step 3: Calculate What Needs Rebalancing
What to do: Compare your current allocation to your target. Calculate how much to buy or sell to return to target weights.
Why it matters: This tells you exactly what trades are required.
What can go wrong: Arithmetic errors can cause over- or under-rebalancing.
Example Calculation:
- Target for equities: 70% of €10,400 = €7,280
- Target for bonds: 30% of €10,400 = €3,120
- Current equities: €7,800 (overweight by €520)
- Current bonds: €2,600 (underweight by €520)
Step 4: Weigh Tax and Cost Implications
What to do: Before executing trades, check the implications:
- Capital gains tax: Selling ETFs may trigger taxes, especially outside tax-advantaged accounts (e.g., German “Freistellungsauftrag”, French PEA, Dutch Box 3 rules).
- Transaction costs: Some brokers (e.g., DEGIRO) charge per trade; others (e.g., Trade Republic) may offer free ETF savings plans but charge for one-off trades.
- Bid-ask spreads: Larger trades or illiquid ETFs can increase costs.
Why it matters: Costs and taxes can erode your returns. Sometimes, it’s better to rebalance with new contributions rather than selling.
What can go wrong: Ignoring tax/costs can lead to unnecessary expenses or surprise tax bills.
Pro Tip
In many European countries, you can use new cash to “rebalance by addition”—directing new money into underweight ETFs, avoiding sales and taxes.
Step 5: Execute Your Rebalancing Trades
What to do: Place buy/sell orders to adjust your portfolio.
- In Trade Republic: Tap Portfolio → Select ETF → Sell or Buy → Enter amount (e.g., sell €520 of EUNL, buy €520 of DBXZ).
- In DEGIRO: Go to Portfolio → Select ETF → Sell or Buy → Enter amount and confirm.
Why it matters: Timely execution ensures your portfolio reflects your targets.
What can go wrong: Placing trades at low-liquidity times can increase spreads. Double-check order types and amounts.
Expected outcome: You should now see your portfolio closer to the target (e.g., 70% equities, 30% bonds).
Step 6: Consider Automated Rebalancing Tools
What to do: Explore if your broker offers automated rebalancing, or use third-party tools.
- Trade Republic: No full automation, but you can set up monthly ETF savings plans to maintain allocation over time.
- DEGIRO: Manual only, but you can use spreadsheets or apps (e.g., Portfolio Performance) to track drift and prompt rebalancing.
Why it matters: Automation reduces the risk of forgetting or delaying rebalancing.
What can go wrong: Over-automation (e.g., rebalancing too frequently) can increase costs and taxes.
Pro Tip
Set a calendar reminder (e.g., every January and July) to review allocation, or use apps that alert you when drift exceeds your chosen threshold.
Sample Rebalancing Schedules
- Time-based: Rebalance every January (once per year) or January/July (twice per year).
- Threshold-based: Rebalance only if any asset class drifts by more than ±5% from your target.
- Cash flow-based: Direct new monthly contributions to underweight ETFs (no selling needed).
Choose the method that best fits your discipline and tolerance for effort versus costs.
Common Mistakes
- Rebalancing too often: Increases costs and taxes without meaningful benefit.
- Ignoring tax impact: Especially relevant in France, Germany, the Netherlands—always check rules for capital gains.
- Neglecting platform fees: DEGIRO's low fees can add up if you trade frequently; Trade Republic's savings plans are more efficient for regular investing.
- Emotional reactions: Rebalancing is not market timing—avoid changing allocation based on news or fear.
- Forgetting to update targets: Life changes (new job, kids, nearing retirement) may require a new allocation strategy.
Next Steps
- Set your first rebalancing date and add it to your calendar
- Track your allocation using your broker’s dashboard or a tool like Portfolio Performance
- Review your country’s tax rules before making large trades
- Read ETF vs. Stock Picking in 2026: Which Approach Wins for European Investors? for deeper context on portfolio strategy
- Consider automating your contributions with ETF savings plans to minimize the need for manual rebalancing
Disclaimer: This article is for educational purposes only and does not constitute financial advice. Always do your own research and consider consulting a qualified financial advisor before making investment decisions.