> OpenTaxSolver (OTS) is a free, safe + secure program for calculating Tax Form entries for Federal and State personal income taxes. It automatically fills-out and prints your forms for mailing.
> News: Updating has begun for the next tax-year, 2025, which will be due April 15, 2026.
> Generally the final versions of the Government's forms are not released until near the end of January. They could be delayed further if there are major changes - which we do expect this time. Some OTS updates have begun in October for the upcoming year. Then the initial release for OTS is usually posted within about a week after the final Government forms are posted. So we are expecting near the end of January 2026.
Hosted at Sourceforge [1]
There's a tutorial of sorts, may be a bit dated? (2020) [2]
Alternative: Open Tax Solver [0]
Docs and links to videos at the site.
> OpenTaxSolver (OTS) is a free, safe + secure program for calculating Tax Form entries for Federal and State personal income taxes. It automatically fills-out and prints your forms for mailing.
> News: Updating has begun for the next tax-year, 2025, which will be due April 15, 2026.
> Generally the final versions of the Government's forms are not released until near the end of January. They could be delayed further if there are major changes - which we do expect this time. Some OTS updates have begun in October for the upcoming year. Then the initial release for OTS is usually posted within about a week after the final Government forms are posted. So we are expecting near the end of January 2026.
Hosted at Sourceforge [1]
There's a tutorial of sorts, may be a bit dated? (2020) [2]
[0] https://opentaxsolver.sourceforge.net/
[1] https://sourceforge.net/projects/opentaxsolver/
[2] https://opensource.com/article/20/2/open-source-taxes
Discussion (360 points, 4 days ago, 262 comments) https://news.ycombinator.com/item?id=45818319