Tax bill is a common term used to refer to the amount of money a taxpayer owes to the government in terms of taxes. However, there are several other synonyms for tax bill that one can use to describe this financial obligation. Some of these terms include tax assessment, tax invoice, tax statement, tax receipt, and tax demand. Each of these synonyms carries a similar meaning as tax bill, but they may be more suitable for different contexts. For instance, a tax invoice or statement may be used when requesting payment of taxes from a client or customer, while a tax demand may be used to refer to a need for government revenue to meet operating expenses.