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1040 Safe Harbor Checker

Free tool for tax pros: instantly check if your client hit safe harbor for 2025. Enter 3 numbers from the prior-year return for an instant IRS §6654 verdict.

Valim AI Team

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  • tax tools
  • 1040
  • CPA
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1040 Safe Harbor Checker

Did your client
hit safe harbor?

Enter 3 numbers from the prior-year return. Instant verdict on safe harbor status and balance due April 15.

Built by CPAs IRS §6654 compliant Zero data stored 🧮 39 tax pros helped
Client Inputs
2024 Form 1040 → Line 24
$
2024 Form 1040 → Line 11
$
Withholding + estimated
$
Enables penalty estimate + 90% current-year check
$