A construction company in the Cyclades told Greek tax authorities it had earned three euros in 2024. Not three thousand, not three million. Three.
That declaration surfaced in a case that auditors say exposed €3.1 million in concealed income across two firms, and it began not with a tip or a raid but with a real estate listing flagged online.
The investigation was the work of the General Directorate for Financial Transaction Audit Forces, a unit set up in 2026 inside AADE, the authority that runs tax collection in Greece.
It started with an algorithm. The software flagged a real estate agency that was advertising properties on its website as sold, then cross checked those sales against what the agency had reported to the authorities. The numbers did not match. Auditors paid the office a visit, asked for the paperwork, and found that a stack of commissions had simply never been declared.
The agency’s original return claimed €1 million in gross income and a €257,000 loss. Once auditors started asking questions, it filed a correction: revenue nearly doubled to €1.9 million, and the loss flipped into a €229,000 profit.
Then the trail led somewhere stranger. Many of those property sales shared the same seller, a single construction company. Auditors pulled its tax return and found it had reported gross revenue of just €3, alongside a €47,000 loss.
Confronted, the builder revised its return too, putting revenue at €2.2 million and profit at €615,000, a long way from three euros.
AADE says it is still combing through both companies’ books, and the final tally may yet grow.
