Tax Day is April 18. These deductions and credits can lower your tax bill -- and may boost your refund.

Your federal taxes are due on April 18. Yes, Monday. If you haven't yet filed, there's still time to take advantage of common tax deductions and credits to ensure you get the biggest refund possible.

1. Child tax credit The new child tax credit was made fully refundable in 2021 and increased to up to $3,600 per year per child through age 5, and up to $3,000 per year for children ages 6 to 17.

2. Recovery rebate credit (for a missing stimulus payment) If you never received your third stimulus payment and were eligible or if you weren't paid the full amount, you may be eligible for the Recovery Rebate Credit.

3. Earned income tax credit The earned income tax credit reduces the amount of taxes owed by low- to moderate-income workers and families.

4. Lifetime learning credit The lifetime learning credit, or LLC, applies to higher education candidates. To claim it, you, your spouse or a dependent must be footing the bill for qualifying higher education costs. 

5. American opportunity tax credit The American opportunity tax credit, or AOTC, is exclusively for first-time college students for their first four years of college or other higher education, which makes it different from the LLC (above).

6. Child and dependent care credit If you care for a child or another dependent in your household, you may be able to get up to 50% back as a tax break or refund for your child care-related expenses in 2021.