In all OECD countries, the various schemes that pay for the health care goods and services rely on a mix of different sources of revenues. Government schemes, for example, typically receive budget allocations out of the overall government revenues (e.g. from income and corporate taxation, value-added tax, etc.). Social health insurance is usually financed out of social contributions payable by employees and employers. However, these schemes may also receive a varying proportion of their revenues from governmental transfers. The main sources of revenue for private health insurance are either compulsory or voluntary prepayments, which typically take the form of regular premium payments as part of an insurance contract. Out-of-pocket payments are exclusively financed from households’ own revenues. Some health financing schemes (e.g. non-profit or enterprise schemes) may also receive donations or additional income from investments or rental. Resident financing schemes can also receive transfers from abroad as part of bilateral co-operations with foreign governments or other development partners. However, these transfers play no role in the vast majority of OECD countries.