How do I know if my employer did not take out the right amount of taxes per my W-4?

It may. You can look at the withholding tables and compare. The IRS also has an Estimator. These tables are not always consistent from year to year. Sometimes the government wants to put more money into the economy and will adjust the tables to give you more in your paycheck which means a smaller refund or balance due.

Beginning with the 2020 Form W-4, employees are no longer able to request adjustments to their withholding using withholding allowances. Instead, using the new Form W-4, employees provide employers with amounts to increase or decrease the amount of taxes withheld and amounts to increase or decrease the amount of wage income subject to income tax withholding.

Form W-4 contains 5 steps. Every Form W-4 employers receive from an employee in 2020 or later should show a completed Step 1 (name, address, social security number, and filing status) and a dated signature in Step 5. Employees complete Steps 2, 3, and/or 4 only if relevant to their personal situations. Steps 2, 3, and 4 show adjustments that affect withholding calculations.

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