You should check the withholding rate on your commissions. Chances are that it is exactly 22%.

If your other wages are at least $109,225 (2023, Married filing separately) then this rate is too low. You need to add additional withholding to the regular checks to make up for the shortfall. The IRS calculator may be able to help.

Based on the size of your shortfall, you also need to make sure that your filing status on W-4 is Single or Married filing separately, or if it is joint that you take an adjustment for the other job in the household.