Condominium supplier register: managing it with software

The condominium supplier register is the structured archive of every firm and professional providing services to the building: maintenance firms, cleaning companies, insurers, utilities, technicians. In management software it is not a mere list of names but a record for each supplier gathering tax data, current contracts, compliance documents and service history. Keeping it tidy means paying the right people at the right time, applying withholdings correctly and reconstructing in an instant who did what and when.

What a complete supplier record contains

A supplier is not just an IBAN to transfer money to. The register record should gather the information needed for accounting, tax obligations and compliance verification. The essential elements are:

• Company name, legal form, VAT number and tax code
• Operational contacts and a reference for emergencies
• Service category: lift, electrical, plumbing, cleaning, insurance and the like
• Bank details for payments and the agreed terms
• Tax regime, to determine whether and how to apply withholding tax
• Linked contracts, with start, expiry and renewal dates
• Compliance documents such as the DURC contribution certificate, where required for works contracts

Gathering this data in one place avoids chasing emails and folders every time an invoice arrives or a contract must be renewed.

Suppliers and withholding tax

The condominium acts as a withholding agent: when it pays certain services it must apply and remit withholding tax, and in some cases the withholding on amounts due under contracts for works and services. Knowing each supplier's tax regime in advance is therefore decisive to avoid mistakes in remittances and in the subsequent single certification. A register that records the supplier's regime lets the software propose the correct treatment automatically when an invoice is entered, reducing the risk of forgotten withholdings or withholdings applied to those who are exempt.

The link between the register and accounting is what makes the whole flow reliable: the invoice calls up the supplier, the supplier brings its regime, and the data flows without retyping into remittances and into the annual reporting of supplier data to the tax authority.

Checking compliance before assigning work

For works contracts, the condominium as client has an interest in verifying the firm's contribution compliance through the DURC and in assessing technical and professional suitability under construction-site safety rules. Keeping these documents in the supplier record, with their validity date, means knowing immediately whether a firm is reliable and compliant before assigning it a job. A reminder on the DURC expiry avoids starting a site with outdated documentation.

Service history: the practice's memory

Every intervention carried out, every quote requested and every invoice paid to a supplier builds a history of great practical value. It allows you to assess who works well and at what price, to prepare comparisons between quotes on a real basis and to defend choices before the owners' meeting. When an owner disputes the choice of a firm, being able to show the history of interventions and the compared quotes puts the manager in a solid position.

The history is also useful for service continuity. If the reference technician changes or the manager is replaced, the supplier record tells the story of the relationship without needing to reconstruct it from memory.

Multi-building management and shared suppliers

Those who administer several buildings often work with the same suppliers across different condominiums. A well-designed register lets you share a supplier across several buildings while keeping each condominium's contracts, invoices and history separate. This way the payment is always charged to the correct building, in keeping with the separation of each condominium's assets, and at the same time the practice has an overall view of the relationship with that supplier.

Register order means fewer errors

A disorderly supplier register is the source of many errors: duplicate records for the same party, wrong IBANs, mis-applied withholdings, expired contracts nobody notices. Centralising the data and linking it to accounting entries eliminates these inaccuracies at the root.

In AmministraPro the supplier register is linked to accounting, contracts and the maintenance calendar, so the tax regime, the DURC and the service history are always at hand. The supplier management features are described on the /funzioni page, while the plans suited to those who manage few or many buildings are on /prezzi.