How to check a subcontractor's financial solvency before the site starts

In brief: the DURC (Documento Unico di Regolarità Contributiva, the Italian single social-security compliance certificate) and technical requirements (SOA attestation, qualification categories) check whether a subcontractor can legally and technically carry out the works — not whether it has the financial strength to complete them without stopping halfway through for lack of liquidity. The two checks are complementary, not substitutes for each other.

What DURC and SOA check, and what they do not

The DURC certifies that social-security and insurance contributions were paid up to a specific date. The SOA qualification (the attestation issued by accredited bodies, required for public works above the threshold) attests to the technical-organisational and economic-financial capacity required for that category of works, but with minimum requirements designed for admission, not with a continuous update on the company's current situation. A qualified subcontractor with a valid DURC at the time of signing may still have an already eroded net equity, recent protests, or a deterioration under way that is not yet reflected in its qualification documents.

What to check in addition, before opening the site

• Financial strength from the filed balance sheet: net equity and share capital, with the date — a subcontractor with an already eroded equity has less room to absorb an unforeseen site problem (delays, disputes, extra costs) without running into difficulty.
• Protests and insolvency proceedings in progress: signs of liquidity pressure already under way, regardless of social-security compliance.
• Beneficial owner: who really controls the subcontractor, and whether it has other sites or activities in progress competing for the same liquidity and labour.
• Payment behaviour towards its own suppliers and subcontractors (where applicable): a company that already pays late those who work for it is less likely to sustain a demanding site without strain.

Why it matters more on long or multi-phase sites

A short subcontract carries a more limited risk than a site that runs for months or years: the longer it runs, the less the subcontractor's financial position at signing matters compared with its current one. On long sites, a periodic check — not only at the start — reduces the risk of discovering a problem when the works are already half done.

What to do if warning signals emerge before awarding the works

An isolated signal does not automatically rule out the subcontractor, especially if it is technically qualified and there are no immediate alternatives on the market — but it justifies more cautious payment terms (more frequent progress payments instead of long balance payments), a performance bond guaranteeing proper execution, or explicit monitoring during the works.