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Past, present and future
Find refunds you already earned.
Pfifi re-runs your last few returns, federal and state, to see whether amending one gets you money back. Then it carries the fix forward.
1
Upload your past returns
The returns you filed, federal and state, plus the documents behind them. Every form is supported.
- 2023 return Federal and California · filed Apr 202412 forms
- 2024 return Federal and California · filed Mar 20259 forms
- 2025 return Federal and California · filed Apr 202611 forms
2
Each year, checked again
Pfifi recomputes every year still open for a refund and shows what changed and why.
BacktestExample
| Year | Filed | Recomputed | Result |
|---|---|---|---|
| 2023 | $1,200 refund | $3,040 refund | +$1,840 |
| 2024 | $860 refund | $860 refund | Matches |
| 2025 | $410 refund | $410 refund | Matches |
2023: RSU shares sold with $0 basis were taxed twice. Amend by Apr 15, 2027 (federal) and Apr 15, 2028 (California).
3
The fix carries forward
Correcting a past year also corrects what it hands to the next: capital loss and other carryovers flow into the returns that follow.
Capital loss carryover into 2026
From your filed returns$0
After the 2023 fix$3,400
Your 2026 estimate already uses the corrected carryover.
Also included
- Amended forms prepared. 1040-X and your state’s amended return, ready to sign.
- Deadlines tracked. Federal and state refund windows for each year.
- What you filed is kept. Your original returns stay exactly as filed.
- Every form. Federal and state, for every year still open.
Like what you see? Join the waitlist, then upload your documents to go first.