Third Stimulus Check Calculator - American Rescue Plan

How to use this third stimulus check calculator

What this calculator does

This calculator estimates the third-round Economic Impact Payment authorized in 2021 under the American Rescue Plan. It uses the same core inputs that drove the historical payment calculation: filing status, dependents, and adjusted gross income from a 2019 or 2020 return. It applies the $1,400-per-person maximum and the narrow income phase-out bands that reduced the payment to zero above the status-specific upper limit. The result is a historical estimate, not a current benefit application, tax filing, eligibility ruling, or personalized tax advice. The IRS has finished issuing third-round Economic Impact Payments; people dealing with a missing or incomplete 2021 payment should use current IRS guidance rather than treating this estimator as a claim form.

When to use it

Use it to reconstruct what a 2021 payment would have looked like from a known tax return, to compare how filing status changed the income thresholds, to see how an additional dependent changed the maximum family amount, or to explain why a payment fell quickly between the full-payment and zero-payment AGI limits.

How to calculate

1. The calculator opens with a ready-to-use example: a single filer, one dependent, and $77,000 of AGI. The example already produces a finite result and a validated Excel workbook.
2. Set Have you filed 2019 or 2020 taxes? to Yes when you are modeling a return-based historical payment. If you choose No, this calculator stops the estimate because it no longer has the tax-return basis used by this model.
3. Choose Filing status, enter How many dependents?, and replace Income in 2019 or 2020 (AGI) with the adjusted gross income from the relevant return. Results update live.
4. Read Estimated payment first, then use the maximum, reduction, remaining payment share, thresholds, and calculation breakdown to understand how that number was formed.
5. Select Download Excel to export the current validated state as a real XLSX workbook. Reset clears the demonstration and data fields; after Reset, Excel download is disabled until a complete valid state is entered again.

Input guide

Have you filed 2019 or 2020 taxes? is a required Yes/No control. Yes means this estimator can use the entered filing status, dependents, and AGI as a historical return-based scenario. The startup example is Yes. Choosing No does not mean you were necessarily ineligible in 2021; certain nonfilers and federal-benefit recipients were handled through other information sources. A common mistake is interpreting this control as a current filing requirement instead of a modeling boundary.

Filing status is required and accepts Single, Married filing jointly, or Head of household. Single uses a $75,000 full-payment threshold and $80,000 zero-payment threshold; Married filing jointly uses $150,000 and $160,000; Head of household uses $112,500 and $120,000. The startup example is Single. Changing status can change both the number of adult filers represented and the width/location of the phase-out band.

How many dependents? is a required nonnegative whole number; the startup example is 1. Each dependent adds up to $1,400 to the full payment before any income reduction. Entering 1.5, a negative number, or text is rejected. Dependents of any age were included for the third payment, unlike some earlier stimulus rules.

Income in 2019 or 2020 (AGI) is required U.S.-dollar adjusted gross income from the relevant return; the startup example is $77,000. Values may be entered as 77000, 77,000, or 77,000.00. Negative AGI, decimal-comma notation such as 77.000,50, scientific notation, or unsupported symbols are rejected. Higher AGI has no effect below the full-payment threshold, reduces the payment linearly inside the phase-out band, and produces zero at or above the upper threshold. For 2020 Form 1040, AGI appears on line 11; see the IRS explanation of Form 1040 adjusted gross income.

Output guide

Estimated payment is the modeled dollar payment after the income phase-out. Maximum before phase-out is the $1,400-per-adult-and-dependent family maximum before AGI reduction. Phase-out reduction is the difference between those two amounts. Payment share remaining is the percentage of the maximum left after applying AGI; 100% means AGI is at or below the full-payment threshold, while 0% means AGI is at or above the complete phase-out threshold. AGI phase-out span is the dollar width between those thresholds. The summary pills show people in estimate, the full-payment AGI threshold, and the complete phase-out AGI threshold. In the Calculation breakdown, the Component column identifies Adult filer amount, Dependent amount, and Total; Full amount shows each amount before phase-out, and Estimated amount shows the same component after applying the phase-out factor. These are model estimates rather than current IRS determinations.

Worked example

With Yes selected, Single filing status, 1 dependent, and $77,000 AGI, the family maximum is $1,400 for the filer plus $1,400 for the dependent, or $2,800. The Single phase-out runs from $75,000 to $80,000, a $5,000 span. At $77,000, $2,000 of that span has been used, leaving 60% of the payment: ($80,000 – $77,000) ÷ $5,000 = 0.60. Multiplying $2,800 by 0.60 gives the first-open $1,680.00 estimated payment. The reduction is $1,120.00, and each of the two $1,400 components contributes $840.00 after the same factor.

Learn more

The IRS explains that the third-round payment was authorized by the American Rescue Plan as an advance payment of the 2021 Recovery Rebate Credit and documents the applicable phase-out rules in its third-round Economic Impact Payment FAQs. That source is the best place to distinguish the historical advance payment from later Recovery Rebate Credit reconciliation.