The real risks of Excel and paper

Frequent calculation errors

A spreadsheet requires entering and verifying every formula. Most common errors: incorrectly copied indexation formula, confusion between health index and general index, rounding errors (a 0.50 EUR difference over 12 months = 6 EUR/year lost), and forgetting the lease anniversary date.

A miscalculated charge adjustment on Excel can cost the landlord hundreds of euros or provoke a dispute.

Data loss

An Excel file on a laptop: hard drive failure, theft, forgotten backup. A modern property management software stores data in the cloud with automatic backups.

Missed deadlines and delays

Without automatic alerts, you forget: the annual indexation date, insurance renewal, registering an addendum within 2 months, issuing a monthly receipt, annual charge adjustment.

Time savings: the numbers

Estimated average for a landlord with 3 properties: lease generation saves 50 minutes, monthly receipts save 30 minutes, annual indexation saves 45 minutes per property, charge adjustment saves 120 minutes per property and late payment reminders save 25 minutes each. Total: approximately 3 to 8 hours per month saved.

Over a year, that is the equivalent of 1 to 2 full working weeks. Over 5 years for 3 properties: Excel costs approximately 5,000 EUR in time value, while BailBelgique costs approximately 3,094 EUR (subscription + reduced admin time). A saving of around 1,900 EUR in time value alone.

When Excel / paper still works

Editorial honesty: there are cases where Excel is enough. One single property rented to a close relation, very occasional use (seasonal rental 1 month/year), short tests before deciding, or a highly technical landlord who has built a super spreadsheet with macros.

Beyond these cases, a dedicated rental management software quickly pays for itself. For a comparison with agency management, see our comparison BailBelgique vs agency.

Migration Excel to BailBelgique: simple

Setting up BailBelgique takes 15 to 30 minutes: create an account, import properties, add existing tenants, upload current leases (PDF or form), activate alerts and electronic signature. Excel data can be imported via CSV. Paper leases are scanned and attached to each property.