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IRS underpayment penalty estimate v1.0.0

Use this resource to estimate the penalty for underpaid estimated taxes

New

  • 512 downloads
  • 160 likes
  • 174 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install underpayment-penalty-estimate

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent lists estimated tax payments made to the IRS and state tax authorities, compares them with what was due each quarter and calculates the interest on the underpaid amount until the payment date or April 15. It notes possible exceptions. You get a costed penalty estimate.

Mostly picked by

Updated November 2, 2026

Card for the “IRS underpayment penalty estimate” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: penalty calculation and penalty periods
  • SKILL.md: worked example and possible waiver cases

Good fit for

  • You missed a quarterly estimated payment
  • You want to price a late payment before making it

Not for

    Tags

    • penalty
    • estimated tax
    • form 2210
    • late payment

    About

    You say

    “Estimate the underpayment penalty on my second-quarter estimated payments.”

    Card for the “IRS underpayment penalty estimate” skill

    Skill published by openaccountant under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to estimate the penalty for underpaid estimated taxes
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md3.9 KB

    Origin and licence

    Listed unmodified

    Author
    openaccountant
    Source
    github.com/openaccountant/skills/tree/f5abe381f24b5b7d59f1d0b4a825b14494ff2034/personal/tax-penalty-calc
    Licence
    MIT

    Notice

    « tax-penalty-calc » (openaccountant, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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