The primary differentiator between the Bismarck and Beveridge models lies in their funding mechanisms: Bismarck systems rely on social insurance contributions, whereas Beveridge systems are financed via general taxation.

Under the Bismarck model, financing flows through payroll deductions split between employers and employees to non-profit sickness funds. In contrast, the Beveridge model bypasses payroll-specific levies. It funds clinical services directly through the state's general tax revenue. This structural divergence impacts income redistribution. An optimal Bismarck model links benefits to contributions with minimal cross-subsidy, while the tax-funded Beveridge model redistributes wealth across income brackets.