The Ministry of Industry counts 1,162 SMEs hit across 40 provinces, and the Thai Restaurant Association estimates over 5,000 shops in Bangkok and its vicinity closed temporarily. A small shop earns about 5,000 baht a day, so three shut days mean lost sales while rent, wages and utilities keep running. Current flood relief mostly covers housing damage (one floating restaurant got about 6,000 baht), not lost business income. Ingredient prices also jumped (spring onion from 5-10 baht to 25 baht a bunch). Plan cash buffers for flood-days, check whether your delivery or transport partners are running, and ask your bank or the government about business-loss support. Some government co-payment schemes pay in split overnight transfers, so confirm when funds land before buying stock.