California extension 2026

1. Click ‘Get Form’ to open the California Extension form FTB 3538 in the editor.
2. Begin by entering the taxable year at the top of the form. For calendar year 2018, ensure you select the correct dates for your fiscal year if applicable.
3. Fill in the LP, LLP, or REMIC name along with the Federal Employer Identification Number (FEIN) and California Secretary of State (SOS) file number. This information is crucial for proper identification.
4. In the address section, include your complete address. If using a Private Mail Box (PMB), write 'PMB' followed by your box number.
5. Indicate the amount of payment due. Ensure that this reflects any tax owed for 2018 to avoid penalties.
6. Review all entered information for accuracy before finalizing your document. Once confirmed, you can save or print it directly from our platform.

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