California’s tax system is one of the most complicated in the country. We provide fast access to forms from 2010–2025, plus guides and checklists to help you file correctly and avoid penalties.
Get guidance on filing California Form 100W (2011), including water's-edge rules, taxable income reporting, key requirements, and steps for accurate compliance.
FILLABLE FORMS.svg)
California Form 100W (2010) outlines water’s-edge rules for corporations, covering eligibility, filing steps, and key deadlines for accurate state reporting.
FILLABLE FORMSUnderstand California Form 3537 (LLC) (2016) and how it supports extension payments, filing rules, and deadlines for qualifying entities.
FILLABLE FORMSUnderstand how California Form 3519 (PIT) (2019) supports extension payments and helps taxpayers meet state filing deadlines accurately.
FILLABLE FORMSLearn how California Form 3514 (2020) works, who qualifies, and how to claim the CA Earned Income Tax Credit when filing or amending a return.
FILLABLE FORMSLearn how California Form DE 9 (2023) works, who must file quarterly wage reports, and what details employers need to stay compliant.
FILLABLE FORMSLearn how to file California Form DE-9 (2022) accurately, including wage reporting steps, deadlines, and requirements for filing quarterly state returns.
FILLABLE FORMSUse Form 568 (2024) to file your California Limited Liability Company Return of Income and meet state franchise tax requirements through this guide.
FILLABLE FORMS