Income tax exemptions are given based on some specific sources of income and not on the total income. The option I can recommend to Courtney to avoid a balance due is for her to claim an exemption from withholding.
An Employee can have an exemption from withholding, when the said employee can use Form W-4 to know if the employer should not to deduct any federal income tax from wages.
To claim, An individual must earn less than the income tax thresholds laid out by the IRS, and the individual should not owe any tax.
If one do not owe any tax, the employer of that person should not withhold money from the paycheck of the employee to pay the IRS on his employee's behalf.
You can stop this withholding by filing for an exemption from withholding on your W-4.
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