If federal income taxes are withheld from your paycheck, you may still participate.
The ECCA credit applies to your total federal income tax liability for the year — not just the amount withheld from each paycheck. Many taxpayers choose to adjust their withholding during the year to reflect the credit they plan to claim.
To do this, you would submit an updated IRS Form W-4 to your employer. This form allows you to adjust how much federal tax is withheld from each paycheck. For someone redirecting the full $1,700, that may translate to approximately $144 less withheld per month across the year.
Some individuals prefer not to adjust withholding and instead apply the full credit when they file their tax return. The best approach depends on your situation, so consulting a tax professional before modifying Form W-4 is recommended.