In this paper, we present FinStat2SQL, a lightweight text2sql pipeline to address the challenges of complex and domain-specific queries in the financial domain. Designed for local standards such as the Vietnamese VAS standard, FinStat2SQL combines large-scale language models and small-scale language models in a multi-agent setup for entity extraction, SQL generation, and self-correction. We build a domain-specific database and evaluate the models on a synthetic QA dataset, showing that the fine-tuned 7B model achieves 61.33% accuracy with a response time of less than 4 seconds on consumer hardware, outperforming GPT-4o-mini. FinStat2SQL provides a scalable and cost-effective financial analytics solution that provides AI-based query capabilities to Vietnamese enterprises.