Third-party notices — ustaxpenaltysaver.com
Last reviewed: 2026-11-10

USTaxPenaltySaver is a free, independent resource. It is not affiliated with the IRS.

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Heroicons (icons used as inline SVG, some adapted)
https://github.com/tailwindlabs/heroicons
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MIT License

Copyright (c) Tailwind Labs, Inc.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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Inter typeface (loaded through next/font/google)
https://github.com/rsms/inter
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Copyright (c) 2016 The Inter Project Authors.
Licensed under the SIL Open Font License, Version 1.1.
https://openfontlicense.org

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U.S. government works
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Text quoted from IRS publications, the Internal Revenue Manual, IRS forms and
notices is a work of the U.S. government and is in the public domain
(17 U.S.C. 105). It is quoted with its source. Its use here does not imply any
endorsement by the IRS or the U.S. Treasury.

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Our letter and template text
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The text of our letters, templates, phone scripts and guides is dedicated to
the public domain under CC0 1.0 Universal:
https://creativecommons.org/publicdomain/zero/1.0/
The site's code, the USTaxPenaltySaver name, logo and design are not covered.