The government collects income tax through a variety of methods. The primary way the government collects income tax is through the filing of tax returns. Tax returns are the forms that individuals and businesses use to report their income and calculate the amount of income tax they owe. Tax returns are typically filed annually, although some individuals and businesses may be required to file more frequently.

The government also collects income tax through withholding. Withholding is the process by which employers deduct income tax from their employee’s paychecks and send it to the government on their behalf. This ensures that a portion of an individual’s income tax is paid throughout the year, rather than all at once when the tax return is due.
Another way the government collects income tax is through self-assessment. Self-assessment is a process by which individuals and businesses calculate and pay their own income tax. Self-employed individuals and small business owners typically use this method to pay their income tax.
The government also has the power to collect taxes through enforcement actions. This can include levying fines and penalties for failing to file tax returns or pay taxes owed, as well as taking legal action to collect taxes that are delinquent.
In summary, the government collects income tax through a variety of methods, including the filing of tax returns, withholding, self-assessment, and enforcement actions. These methods work together to ensure that individuals and businesses pay the income tax they owe in a timely and efficient manner.