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Net Operating Loss (NOL) Computation and NOL and Disaster Loss Limitations — Corporations

Use the California Tax Form Calculator California Tax Form 3805q as a stand alone tax form calculator to quickly calculate specific amounts for your 2026 California state tax return. Alternatively, you can use one of our Combined Federal and State Tax Estimators to quickly calculate your salary, tax, and take-home pay.

Net Operating Loss (NOL) Computation and NOL and Disaster Loss Limitations — Corporations
If the corporation is included in a combined report of a unitary group, see instructions, General Information C, Combined Reporting.
Part I Current year NOL. If the corporation does not have a current year NOL, go to Part II.
11
22
33
4a4a
b4b
c4c
55
66
If the corporation is using the current year NOL to carryback to offset net income for taxable years 2015 and/or 2016, complete Part III, NOL carryback, on Side 2 before completing Part I, lines 7 - 9 below
77
88
99
Election to waive carryback
Part II NOL carryover and disaster loss carryover limitations. See Instructions.
1(g)
Available balance
Prior Year NOLs
(a)
Year of loss
(b)
Code – See instructions
(c)
Type of NOL – See below*
(d)
Initial loss – See instructions
(e)
Carryover from 2016
(f)
Amount used in 2017
(h)
Carryover to 2018 col. (e) minus col. (f)
2
Current Year NOLs
3
4
Part III NOL carryback
1
2
(a)
Year of loss
(b)
Code – See instructions
(c)
Type of NOL – See below*
(d)
Initial loss – See instructions
20152016(i)
Carryover to 2018 col. (d) minus [col. (e) plus col. (g)]
(e)
Carryback used – See instructions
(f)
After carryback col. (d) minus col. (e)
(g)
Carryback used – See instructions
(h)
After carryback col. (f) minus col. (g)
3
*Type of NOL: General (GEN), New Business (NB), Eligible Small Business (ESB), or NOL attributable to a qualified disaster loss (DIS).
Part IV 2017 NOL deduction
1
2
3

Last reviewed: : If you believe this form requires an update, please contact us.

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Frequently Asked Questions

How does community property affect my CA return?

Married/RDP filers may have community property allocation rules; see CA guidance.

Are employer retirement contributions taxed by CA?

Pre-tax 401(k)/403(b) contributions reduce federal and generally CA taxable wages.

Is there a separate Medicare surtax in CA?

Additional Medicare is federal; California PIT is separate and applies via its own brackets/credits.

Does CA tax out-of-state remote work?

CA generally taxes income earned while working in CA; non-CA work may be non-CA source—track days/location.

Can I deduct mortgage interest in CA?

Often yes, subject to CA limits/adjustments; compare standard vs itemized for CA.

Important Notes

All calculations are estimates for guidance only. Always review your return and consider professional advice when submitting official filings.