A tithe is a one-tenth part of something, paid as a contribution to a religious organization or compulsory tax to government. Today, tithes are normally voluntary and paid in cash or cheques or more recently via online giving, whereas historically tithes were required and paid in kind, such as agricultural produce. After the separation of church and state, church tax linked to the tax system are instead used in many countries to support their national church. Donations to the church beyond what is owed in the tithe, or by those attending a congregation who are not members or adherents, are known as offerings, and often are designated for specific purposes such as a building program, debt retirement, or mission work.

A tax is a compulsory financial charge or some other type of levy imposed on a taxpayer by a governmental organization in order to collectively fund government spending, public expenditures, or as a way to regulate and reduce negative externalities. Tax compliance refers to policy actions and individual behaviour aimed at ensuring that taxpayers are paying the right amount of tax at the right time and securing the correct tax allowances and tax relief. The first known taxation took place in Ancient Egypt around 3000–2800 BC. Taxes consist of direct or indirect taxes and may be paid in money or as its labor equivalent.