The Federal Credit Calculator totals nonrefundable and refundable federal tax credits and estimates how they change a preliminary tax liability. It separates credits that can reduce tax only to zero from refundable credits that may increase a refund.
Use amounts from your own eligibility review or tax preparation worksheet. The calculator applies nonrefundable credits first, then refundable credits, and shows the remaining liability or potential excess credit. It does not test income limits, dependent qualifications, phaseouts, or credit-specific rules.
1. Enter preliminary tax
Use tax calculated before credits.
2. Add nonrefundable credits
Enter the total that can reduce tax but generally not below zero.
3. Add refundable credits
Enter credits that may be refundable under your assumptions.
4. Review remaining tax
The breakdown shows how much nonrefundable credit was actually used.
A positive main result is remaining tax; a negative net amount is displayed as potential refundable excess.
Credit eligibility and refundability depend on the specific credit and tax year.
Given: $12,000 preliminary tax, $2,500 nonrefundable credits, and $1,200 refundable credits.
Calculation: Tax after nonrefundable credits = $9,500. Tax after refundable credits = $8,300.
Result: Estimated remaining federal tax is $8,300.
Nonrefundable credits are generally limited by tax liability, while refundable credits may create or enlarge a refund.
The calculator uses only enough to reduce preliminary tax to zero.
No. It only applies credit amounts you enter.
No. It is a planning estimate based only on the values entered. A filed return may include rules, limits, elections, phaseouts, and forms that this simplified calculator does not model.
No unless a field explicitly asks for them. These tools focus on federal planning amounts and keep state, local, Social Security, and Medicare taxes separate.