Alternatives
Products that do what Atamatax does
Self-serve US-expat tax filing — PFIC, FBAR, 1116 included
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- 3UO
2021 · github.com
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- 5CF
I wanted to share a simple web app I created recently, which lets you estimate income taxes owed in the US: https://taxsim.app All the calculations occur directly in the browser, and are powered by a Fortran program that has been converted to WASM using emscripten. This calculator was originally developed in the 1970s [1] by the non-profit National Bureau of Economic Research. NBER has been maintaining this F77 codebase for the last 50 years, and uses it primarily for academic research on tax policy. The Fortran source code itself is over 1MB of text, because it codifies both…
2022
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the IRS recently open sourced most of Direct File, a tax tool it has been working on for a few years now. unfortunately, due to recent events, the IRS isn't working on it anymore. I decided to pick up where they left off and I'm trying to get it ready for next tax season the work behind Direct File is really interesting and I made a lot of it available online to read as well - https://docs.openfile.tax/en/latest/
2025 · github.com
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2016 · painless1099.com
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Hey all, global sales tax compliance is one of those things that's not top of mind but can be an annoyance because sometimes you just can't get away with it when selling internationally. We've been really frustrated with how sales tax tools out there usually only focus on one particular region (i.e. US states, Canada, and maybe Europe), even though there are like 260+ jurisdictions around the world each with their own sales tax, VAT, or GST rules pertaining to digital products. So we made our own global sales tax index that covers virtually every jurisdiction you can think of, with updated…
2024 · loofapay.com
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2020 · boomstick.games
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See which US expat tax break saves you more — instantly
Aug 2026 · expatcove.com
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Foreign-owned LLCs Simplified (5472, 1120, SS4 & More)
Mar 2026 · foreignownedllc.com
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