tax-extension-payment-calculator
Client-side calculator for 2025 US federal and California extension payments, with penalties and interest.
What it does
No longer note yet: the description above comes from its own page, read on the day the facts beside it were checked.
Licence unknown: we found no licence we could recognise. Check with the maintainers before you reuse the code.
Where it fits on the map
Not on the map: for individual taxpayers.
The map places maintained projects for a company tax department or a tax authority, without a demo or paid-service flag. Everything else stays on the list with its label.
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Of the same kind, for a shared jurisdiction or tax area. Not a ranking.
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Maintain this project?
Link to this page from your README, so readers find the facts, the notes and where it fits. The badge is a small SVG served from this site.
[](https://tax-oss.com/projects/tax-extension-payment-calculator/)