Hey Pastor: I always thought the Evangelical Council for Financial Accountability (ECFA) was for parachurch ministries. As your church grows, the percentage of people diminishes whose confidence can be based in personal relationship. For that reason this objective, third-party accreditation—if you meet their standards—is a credible confidence boost to those who support your ministry financially.
In a growing ministry, some things can’t be assumed—they have to be carefully ensured. Management of all resources entrusted to your ministry, with financial integrity, is one of these issues. Thank God for a wonderful ministry like ECFA, which exists to establish the gold standard of financial integrity and organizational governance. They grant accreditation only to those who meet their standards.