← Back to Learning Journey

When two partners pool resources, the stakes change. A €100,000 portfolio isn't the same when one earns €5,000/month and the other earns €1,500/month. Position sizes, risk budgets, and contribution strategies should all reflect who earns what — and who can afford to lose what.

💰

Proportional Contributions

Each partner contributes proportionally to their net income. If Partner A earns 70% of household income, they fund 70% of investments. This protects the lower earner's financial safety.

🎯

Risk Budget by Income

The higher earner can absorb more volatility. Allocate riskier assets (stocks, crypto) to the partner with higher income or more stable employment, and safer assets (bonds, savings) to the other.

🏦

Separate + Joint Accounts

Use a joint investment account for shared goals (house, retirement) and individual accounts for personal risk tolerance. In Belgium, joint accounts have succession planning implications.

🇧🇪

Tax Optimisation for Couples

Both partners can claim the €990 pensioensparen tax break (30%). Married couples are taxed separately on investment income — coordinate to stay below thresholds and maximise both deductions.

⚖️ Three Common Approaches

  • Full Pooling — All income goes into one pot. Simple, but the lower earner may feel they have less say. Works best with similar risk profiles and complete financial transparency.
  • Proportional Split — Each contributes a percentage of income (e.g., both put 60% into joint investments, keep 40%). Fairest for income gaps. Best for couples with different risk tolerances.
  • Independent + Shared Goals — Each manages their own portfolio independently. Only shared goals (house deposit, children's education) are funded jointly. Maximum autonomy, requires good communication.

📊 Income Gap & Portfolio Guidelines

Income Gap Recommended Strategy Risk Allocation
Small (<20%) 50/50 contributions work fine. Pool investments freely. Balanced — both can take similar risk
Medium (20–50%) Proportional contributions. Higher earner covers more of the emergency fund. Higher earner: 70/30 stocks/bonds. Lower: 50/50.
Large (>50%) Higher earner funds most investments. Lower earner prioritises emergency fund + pension savings. Higher earner: aggressive. Lower: conservative + tax-advantaged.
Single income Earner funds all. Prioritise joint emergency fund (6 months), then invest surplus. Non-earner manages pensioensparen. Very conservative base. Only invest what you can lose on one salary.

🧮 Couple Investment Simulator

Enter both incomes to get a personalised contribution plan and risk allocation suggestion.

🎯 Key Takeaway

The best couple portfolio isn't one-size-fits-all. It reflects each partner's income, risk tolerance, career stability, and tax position. The higher earner can take more risk; the lower earner should prioritise safety and tax-advantaged products. Communicate openly, review together quarterly, and align your investments with your shared life goals.