HomeGuidesCo-ownershipReserve fund co-ownership and renting

Reserve fund co-ownership and renting

Reserve fund co-ownership and renting

EH Par Edouard Hennin 2 min de lecture Mis a jour le May 28, 2026
Sommaire · 4 sections Reduire ▴

Since the co-ownership reform of 1 January 2019, the reserve fund is mandatory in all Belgian co-ownerships.

ElementDetail
Legal basisCivil Code, Book 3, Title 3
Effective date1 January 2019
Minimum contribution5% of ordinary common charges
Bank accountSeparate from the working capital fund
ManagementBy the building manager

Purpose

The reserve fund is intended to finance major repairs and exceptional works: roof renovation, lift replacement, facade rendering, compliance upgrades.

For the general framework, see our guide on co-ownership and renting.

How the reserve fund works

Funding

The fund is fed by annual contributions from co-owners, proportionate to their shares. The legal minimum is 5% of common charges, but the general assembly may vote a higher amount.

Use

Permitted expenditureNot permitted
Roof replacementCurrent maintenance
Lift replacementCommon area cleaning
Facade renovationCommon area electricity
Fire compliance upgradeBuilding manager fees
Collective boiler replacementManagement costs

Investment

The general assembly decides on the investment of the reserve fund (savings account, secure investment). The building manager may not invest it on their own initiative in risky products.

Separate bank account

The reserve fund must be held in a bank account separate from the working capital fund. This separation is mandatory and the building manager must account for it at each general assembly.

Impact on the rental

For the landlord

The reserve fund is a non-recoverable charge. It reduces the net yield of the rental property but protects against unexpected exceptional levies.

ScenarioWithout reserve fundWith reserve fund
Roof to replace (50,000 EUR)Exceptional levyFinanced by the fund
Lift breakdownUrgent levyFinanced by the fund
Facade to renovateLevyFinanced (in part) by the fund
Cash flow impactLarge unforeseen expenseSmoothed over time

For the tenant

The tenant does not pay the reserve fund. However, the tenant indirectly benefits from a better-maintained building. Recoverable charges must never include the reserve fund contribution.

Yield impact calculation

For a unit with 200 EUR/month in common charges, the reserve fund contribution represents at least 120 EUR/year (5% of 2,400 EUR). This amount is not deductible from rental income.

Practical advice

For the landlord

  1. Check that your co-ownership complies with the legal obligation
  2. Include the reserve fund contribution in your yield calculation
  3. Never recharge this cost to the tenant
  4. Attend GAs to vote on the amount and use

Before buying to let

  • Ask for the existing reserve fund amount
  • Check planned works for the coming years
  • Assess potential special levies
  • Include these costs in your investment simulation

Formalise your charges in the lease and track them with a rental management software.

Verifie & redige par
Edouard Hennin
Real estate expert since 2018, Edouard supports Belgian landlords and tenants through their rental processes. He oversees the writing of every guide in collaboration with the legal team and ensures all content reflects current legislation in Brussels, Wallonia and Flanders.
Voir tous les articles de Hennin →
Publie May 28, 2026
Derniere verification May 28, 2026
← Tous les articles
Take action

Manage all your leases in one tool

14-day free trial, no card required.

Start - 14 days free