(typically filed in 2026), including links for individual and business taxpayers.
California & Federal Income Tax Forms
Use this directory to quickly access official California (FTB) and IRS forms:
California & Federal Income Tax Forms Directory.
Additional AccountingPortal pages (optional):
California State Individual Income Tax Forms
and
2025 Federal Form 1040 (Excel) Download.
1) Individual Income Tax (2025)
California Individual Income Tax (FTB)
California residents, part-year residents, and nonresidents with California-source income may need to file depending on
income thresholds and filing rules set by the California Franchise Tax Board (FTB).
- California filing requirements (FTB)
- Due dates & automatic extension (FTB)
- Standard deduction information (FTB)
- Forms & publications (FTB)
(includes Form 540, Form 540NR, Form 540 2EZ, instructions, schedules) - CalFile (FTB free e-file)
Federal Individual Income Tax (IRS)
The Internal Revenue Service (IRS) provides federal filing rules, deadlines, tax brackets, and official forms.
2) Business Tax (2025)
California Business Taxes (FTB)
California business tax filing depends on your entity type (corporation, S corporation, partnership, LLC, etc.).
The FTB provides official filing guidance, information return requirements, and forms.
- Business filing overview (FTB)
- Information returns (1099, etc.) (FTB)
- e-file resources (FTB)
- Forms & publications (FTB)
(common forms include corporate, S-corp, partnership, and LLC returns such as Forms 100/100S/565/568)
Federal Business Taxes (IRS)
The IRS provides official business tax guidance and federal forms based on entity type and filing needs.
3) Estimated & Quarterly Taxes
- California estimated tax guidance:
FTB Estimated Tax
- Federal estimated tax guidance:
IRS Estimated Taxes
- Federal estimated tax form:
IRS Form 1040-ES
Official Sources
- California Franchise Tax Board (FTB):
ftb.ca.gov
- Internal Revenue Service (IRS):
irs.gov
Disclaimer
The information provided on Accounting Portal is for general informational and educational purposes only and does not constitute professional accounting, tax, financial, or legal advice.
While we strive for accuracy and timeliness, no representation or warranty is made regarding completeness or reliability. Always consult a qualified professional before making any business, tax, or financial decisions.
Neither Accounting Portal nor its authors are liable for any loss or damage resulting from the use of this information.
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