What do you call a one-time credit against taxes?

A one-time credit against taxes is referred to as a tax credit. This term is used to describe a specific amount of money that taxpayers can subtract directly from the income tax they owe to the government. Tax credits can reduce the tax liability dollar for dollar, leading to potentially significant savings for individuals or businesses.

Tax credits can come in various forms, including refundable and non-refundable. Refundable tax credits allow the taxpayer to receive a refund if the credit exceeds the amount owed, while non-refundable credits can reduce the tax liability to zero but do not result in a refund.

The other terms mentioned do not accurately describe a one-time credit against taxes. "Due credit," "credible credit," and "revenue credit" do not hold any specific meaning in the context of tax accounting or tax policy and thus are not used to indicate a credit applied against tax liabilities. The clarity of the term "tax credit" makes it the appropriate choice in this context.