Understanding the Difference Between Building Societies and Banks
Two Models, One Purpose
Banks and building societies both offer savings accounts, current accounts, and mortgages. They both hold banking licences and FSCS protection. But their ownership structure — and therefore their fundamental incentives — are profoundly different.
Building Societies: Member-Owned Mutuals
Building societies are owned by their members — the people who hold savings accounts or mortgages with them. There are no external shareholders demanding dividends. Any surplus goes back to members through better savings rates, lower mortgage rates, or improved services.
Major UK building societies include Nationwide (the largest), Yorkshire Building Society, Coventry Building Society, Leeds Building Society, and West Bromwich Building Society. Together they hold around £400 billion in assets.
Banks: Shareholder-Owned
Banks are owned by shareholders who expect returns on their investment. Profits are distributed as dividends or reinvested for growth. This creates different incentives: banks must balance customer service against shareholder returns in a way building societies don't.
Practical Differences
- Building societies historically offer more competitive savings rates on standard products
- Mortgage rates from mutuals are often competitive, particularly for first-time buyers
- Customer service scores — Nationwide and other mutuals consistently outperform big banks in Which? surveys
- Building societies cannot raise capital from external investors as quickly as listed banks
Demutualisation and What It Means
Several building societies converted to banks in the 1990s — Halifax, Bradford & Bingley, Abbey National. Members received one-off share payouts but lost the long-term benefits of mutual ownership. Nationwide has consistently rejected calls for demutualisation, citing better long-term outcomes for members.
