Browse free open source Tax software and projects below. Use the toggles on the left to filter open source Tax software by OS, license, language, programming language, and project status.

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  • 1
    Open Tax Solver

    Open Tax Solver

    Calculates income tax form entries, helps do your taxes.

    OTS is a safe, secure, easy-to-use program for calculating Tax Return Form entries, and determining your tax-owed or refund-due, for Federal or State personal income taxes. Includes updated versions for US 1040, Schedules A, B, C, D, and for several states. OTS provides both graphical and textual interfaces for quickly filing out your tax forms. --- Best way to download the correct version for your platform -- go to the OTS WEBSITE: =====> https://opentaxsolver.sourceforge.net/
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    Downloads: 41 This Week
    Last Update:
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  • 2
    rotki

    rotki

    A portfolio tracking, analytics, accounting and tax reporting app

    A portfolio tracking, analytics, accounting and tax reporting application that respects your privacy
    Downloads: 10 This Week
    Last Update:
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  • 3
    KSeF API | Faktury KSeF

    KSeF API | Faktury KSeF

    Profesionalna integracja z Krajowym Systemem e-Faktur (KSeF)

    W serwisie ksefapi.pl specjalizujemy się w kompleksowych rozwiązaniach związanych z Krajowym Systemem e-Faktur (KSeF). Oferujemy integrację z KSeF, generowanie i wysyłanie e-faktur w formacie XML, a także wizualizację faktur (PDF lub HTML). Zapewniamy szybką i skuteczną obsługę faktur KSeF, w tym wyszukiwanie i pobieranie faktur sprzedażowych i kosztowych. Pomagamy firmom w adaptacji do nowych regulacji KSeF, oferując narzędzia i wsparcie techniczne. Aktualnie dostępne narzędzia: - Bezpośrednie wywołanie API REST: https://ksefapi.pl/api-test/swagger-ui/index.html#/ - Biblioteki programistyczne PHP, JAVA, .NET: https://ksefapi.pl/pobierz-ksef-php-java-net/ - Pełna i szczegółowa dokumentacja: https://ksef24.com/ - Aplikacja mobilna (wkrótce) - Aplikacja webowa (wkrótce) W zależności od wymagań można wykorzystać nasze narzędzia do komunikacji bezpośrednio ze swojego systemu (On-premise) lub poprzez naszą architekturę (SaaS)
    Downloads: 5 This Week
    Last Update:
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  • 4
    Irish Income Tax Calculator

    Irish Income Tax Calculator

    Irish Income Tax Calculator

    The PAYE Calculator is aimed at PAYE Workers, Contractors, and Company Directors in Ireland. The objective of this Windows 10 application is to provide an idea of how much PAYE, USC, PRSI and LPT one could expect to pay annually. Another feature in development is information regarding available tax reliefs that can be claimed and how a tax refund can be claimed annually. The scope of the project is to provide users with as much information around taxation as possible. If you like this application and what to support future development, you can donate €1 or $1 to damien.hunter9@gmail.com through PayPal or through ko-fi.com/softaccountant
    Downloads: 0 This Week
    Last Update:
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  • 5
    OpenRDA, commercial FOSS fund accounting
    Governmental & non-profit accounting, hr & tax software for K12, local/municipal & non-profit entities of all sizes. Built using Qt, supports MYSQL & MYSQL Server. In production at 145 organizations across the US. Supported by OpenRDA, Inc.
    Downloads: 0 This Week
    Last Update:
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