Drake Tax - CA: Secretary of State (SOS) File Number
Article #: 18942
Last Updated: February 12, 2026
Important If the SOS number contains a letter (such as "B") that letter should NOT be entered - only enter the numbers.
The following is a list of screens where you may need to enter the SOS number, depending on the return type and forms that you need to file:
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1040
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CA screen 3804
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CA screen 3503 - Pass-Thru info
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CA screen 3521
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CA screen 3531
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CA screen 3541
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CA screen 3592
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CA screen 3831
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CA screen 3835
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CA screen 3554
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CA screen 3872
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CA screen NOL2
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CA screen 592B
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CA screen 593
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1040 (SMLLC)
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CA screen DEMO
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CA screen INFO
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CA screen QUES 0 Schedule EO – Part I
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CA screen QUES 0 Schedule EO – Part II
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CA screen S592
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1120 return
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CA screen 100
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CA screen NOL
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CA screen 3503 - Pass-Thru Info
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CA screen 3541
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CA screen 3531
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CA screen 3521
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CA screen 3592
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CA screen 3831
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CA screen 3835
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CA screen 3554
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CA screen 592B
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CA screen 593
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CA screen 3872
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1120-S return
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CA screen 100S
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CA screen NOL
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CA screen 3503 - Pass-Thru Info
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CA screen 3541
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CA screen 3531
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CA screen 3521
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CA screen 3592
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CA screen 3831
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CA screen 3835
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CA screen 3554
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CA screen 592B
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CA screen 593
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CA screen 3872
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1065 return
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CA screen 565
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CA screen K1
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CA screen 568
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CA screen SM
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CA screen O
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CA screen NOL
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CA screen 3503 - Pass-Thru Info
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CA screen 3541
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CA screen 3531
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CA screen 3521
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CA screen 3592
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CA screen 3831
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CA screen 3835
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CA screen 3554
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CA screen 592B
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CA screen 593
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CA screen 3872
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1041 return
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CA screen 592B
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CA screen 593
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CA screen 3872
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CA screen 3804
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CA screen 3531
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990 Return
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CA screen 3872
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