Calculator
Example Data Table
| Scenario | Status | AGI | Adults | Children Under 17 | Other Dependents | Round | Estimated Amount |
|---|---|---|---|---|---|---|---|
| Single filer | Single | $65,000 | 1 | 0 | 0 | Third | $1,400 |
| Joint family | Married | $140,000 | 2 | 2 | 1 | Third | $7,000 |
| Head filer phaseout | Head | $116,250 | 1 | 1 | 0 | Third | $1,400 |
| First round family | Married | $155,000 | 2 | 2 | 0 | First | $3,150 |
Formula Used
The calculator first finds the gross payment before income reduction.
Gross = eligible adults × adult amount + eligible dependents × dependent amount
For the first payment, each eligible adult receives $1,200. Each qualifying child under 17 adds $500.
For the second payment, each eligible adult receives $600. Each qualifying child under 17 adds $600.
For the third payment, each eligible adult receives $1,400. Each qualifying dependent also adds $1,400.
For the first and second payments, the phaseout is:
Phaseout = max(0, AGI - threshold) × 0.05
Estimated payment = max(0, gross - phaseout)
For the third payment, the calculator uses a proportional phaseout between the starting threshold and full cutoff.
Third estimate = gross × ((cutoff - AGI) ÷ (cutoff - threshold))
Finally, it subtracts payments already received.
Potential credit = max(0, estimated payment - already received)
How to Use This Calculator
- Select one payment round or choose all three rounds.
- Pick your filing status for the tax year being checked.
- Enter adjusted gross income from the related return.
- Enter eligible adults, children under 17, and other dependents.
- Add any amount already received for each round.
- Press Calculate to show the result above the form.
- Use CSV or PDF buttons to save the report.
Stimulus Check Planning Guide
Why This Estimate Matters
Stimulus checks were advance payments tied to recovery credits. Many people received them automatically. Some households received less than expected. A calculator helps review the basic math before checking records. It also gives a clear estimate for planning. The result should not replace official account data. It can still organize the main inputs that affect eligibility.
Income Is the Main Filter
Adjusted gross income controls the phaseout. The calculator compares AGI with the threshold for the selected filing status. Single and separate filers use the lowest starting threshold. Head of household filers use a higher threshold. Joint filers use the highest threshold. The first two payments reduce gradually by five percent of income above the threshold. The third payment uses a tighter band and reaches zero faster.
Dependents Can Change the Result
Dependent rules changed between payment rounds. The first two payments counted qualifying children under 17. Older children and adult dependents did not add money in those rounds. The third payment expanded dependent amounts. It allowed qualifying dependents of any age. That is why the form separates young children from other dependents. This separation keeps older rounds from being overstated.
Received Amounts Should Be Entered
The most useful field is the amount already received. Enter the exact payment amount from records when possible. The calculator subtracts that amount from the estimated payment. The difference appears as a potential remaining credit. If the received amount is higher, the result does not create a negative credit. It simply shows no remaining amount.
Use the Export Tools
The CSV export is useful for spreadsheets. The PDF export is useful for simple records. Save a copy with the tax year documents. Add notes about filing status, AGI, and dependents. These details explain why a result changed. They also help compare first, second, and third payment rounds in one place.
Important Reminder
This tool is educational. It uses general public rules for past payments. It does not check identity, residency, Social Security number rules, amended returns, offsets, or official account history. Always compare the result with official tax records before making a filing decision.
FAQs
1. What does this calculator estimate?
It estimates historical first, second, and third stimulus payment amounts. It uses filing status, AGI, eligible adults, dependents, and payments already received.
2. Is this an official tax tool?
No. It is an educational estimator. Use official account records, letters, or tax documents before filing or amending a return.
3. Why are dependents split into two fields?
The first two payment rounds counted qualifying children under 17. The third round counted all qualifying dependents. Separate fields keep the estimate cleaner.
4. Which AGI should I enter?
Enter the adjusted gross income from the return linked to the payment year. Use exact records when available for a better estimate.
5. Why did my payment drop to zero?
Your AGI may exceed the phaseout range for the selected filing status. The third round reaches zero faster than earlier rounds.
6. What does potential credit mean?
It means the estimated payment is higher than the amount already received. It is not a filing guarantee or official eligibility decision.
7. Can I download my results?
Yes. Submit the form with the CSV or PDF button. The file includes round details, totals, and calculated amounts.
8. Does this handle every special rule?
No. It does not verify identity, residency, Social Security number rules, deceased taxpayer issues, amended returns, or official payment history.