The weekly report on daily sales, flash domestic sales and domestic sales progress for large companies and SMEs offers a detailed snapshot of commercial activity across Spain’s most significant economic actors. Compiled from the Tax Agency’s ongoing monitoring system, the document aggregates key performance indicators (KPIs) derived from fiscal declarations submitted by large enterprises and small‑to‑medium‑sized enterprises (SMEs). For each reporting day, the dataset records the total volume of sales, the proportion of transactions categorized as “flash” sales—which capture sudden spikes in turnover—and a provisional estimate of cumulative sales growth up to that point in the week. By disaggregating these metrics by sector, geographic region, and company size, the report enables analysts to identify short‑term economic fluctuations, assess the immediacy of market responses to external shocks, and evaluate the effectiveness of fiscal incentives aimed at stimulating consumption. The flash sales component, in particular, highlights transactions that deviate markedly from typical sales patterns, providing early warnings of potential supply‑chain adjustments or demand surges. Moreover, the weekly progress figures are benchmarked against historical averages, allowing stakeholders to gauge whether current activity aligns with seasonal expectations. The information is disseminated promptly, ensuring that policymakers, investors, and industry associations have access to near‑real‑time data to inform strategic decisions, such as adjustments to monetary policy or targeted support measures for sectors experiencing volatility. Overall, the weekly publication serves as an essential barometer for assessing the health of Spain’s commercial landscape, guiding both public and private decision‑making with timely, sector‑specific insights.