California NOL Deduction Suspension 2026: Small Business Guide

Is Your Small Business Ready for California’s NOL Deduction Suspension in 2026?

If your California small business has earned over $1 million in state-apportioned income, you may be facing a significant — and largely overlooked — tax threat this year. The California NOL deduction suspension 2026 small business rules, enacted through Senate Bills 167 and 175, are actively in effect and could dramatically increase your tax bill if you haven’t already adjusted your strategy. For small business owners in Moreno Valley, the Inland Empire, and across Southern California, understanding these rules before your 2026 estimated tax payments and year-end planning deadlines is no longer optional — it’s critical.

At Catalyst CPA Corporation, we’ve been closely monitoring these California-specific changes and want to give our clients and readers a clear, actionable breakdown of what the NOL suspension means, who it affects, how the $5 million business tax credit cap compounds the problem, and — most importantly — what you can do about it right now. Explore our tax and accounting insights for additional resources on California tax strategy.

What Is a Net Operating Loss (NOL) Deduction — and Why Does It Matter for California Small Businesses?

A Net Operating Loss (NOL) occurs when a business’s allowable deductions exceed its taxable income in a given year. Under normal California rules, businesses can carry forward those losses to offset taxable income in future profitable years — a critical lifeline that helps even out the ups and downs of business ownership.

For example, if your business lost $400,000 in 2022 but earned $600,000 in 2025, you could typically apply that carryforward loss to reduce your 2025 California taxable income to $200,000. That’s a real, meaningful reduction in state tax liability.

The California NOL deduction suspension 2026 small business impact eliminates that ability — temporarily but painfully — for qualifying businesses. And for those who had counted on using accumulated NOL carryforwards to manage their 2026 tax liability, this could mean a surprise six-figure state tax bill. Our team at CPA services in Moreno Valley is actively helping affected clients recalibrate their plans.

The Law: What SB 167 and SB 175 Actually Do — California NOL Suspension 2026 Explained

California enacted Senate Bill 167 (SB 167) as part of the 2024–2025 state budget package. Here is what it establishes:

• NOL Deduction Suspended: For tax years beginning on or after January 1, 2024, and before January 1, 2027 (covering tax years 2024, 2025, and 2026), California has suspended the use of NOL deductions for any taxpayer — individual or corporate — whose net business income or modified adjusted gross income attributable to California is $1 million or more.
• $5 Million Business Tax Credit Cap: During the same three-year window (2024–2026), SB 167 caps the total amount of California business tax credits — including carryovers — that any taxpayer can apply in a single year at $5 million. Affected credits include the California R&D credit, enterprise zone credits, hiring credits, and many others.
• NOL Carryforward Period Extended: Critically, the years in which an NOL deduction is denied due to the suspension do not count against your carryforward clock. California extends the carryforward period by one year for each year the deduction is suspended — meaning the losses are not permanently lost, just delayed.
• Refundable Credit Relief (Post-2026): Business tax credits that cannot be used due to the $5 million cap during 2024–2026 may be refunded at a rate of 20% per year over five years once the limitation period ends — but this is a slow recovery mechanism, not immediate relief.

Senate Bill 175 (SB 175) added a conditional escape valve: the NOL suspension and credit cap for 2025 and/or 2026 could be paused if California’s Director of Finance determined that the state’s General Fund forecast was strong enough to forgo the revenue. However, based on California’s ongoing budget shortfall realities heading into 2026, there is no indication that the suspension has been officially lifted for the 2026 tax year. For the most current legislative status, visit the California Legislative Information portal. Businesses should operate under the assumption that the suspension is fully in effect for 2026.

Who Is Affected? The $1 Million Threshold for California NOL Suspension Explained

This is the first question every Moreno Valley small business tax planning conversation should start with: “Do I meet the $1 million threshold?”

The threshold applies to your California-apportioned net business income — not necessarily your total gross revenue. This means:

• S-Corporations, LLCs taxed as partnerships, and sole proprietors must look at their net business income attributable to California operations as reported on their California returns.
• C-Corporations must evaluate their California-apportioned taxable income before NOL deductions.
• If your business operates only in California, your California-apportioned income is effectively your total net business income.
• If you operate in multiple states, California uses a formula (typically a single-sales-factor or three-factor apportionment) to determine what portion of your income is California-sourced.

While $1 million may sound like a large threshold to clear, keep in mind this is net business income, not revenue. Many profitable Inland Empire contractors, medical practices, professional service firms, distributors, and real estate operators with revenues in the $3–$10 million range may find that their net California income exceeds this mark — especially in a strong revenue year.

If your California net business income is close to $1 million, year-end planning becomes especially important, as there may be legitimate strategies to manage income timing and stay below the threshold. The California Franchise Tax Board provides additional guidance on apportionment calculations for multi-state businesses.

The Double Hit: How the California NOL Suspension and $5 Million Credit Cap Compound Each Other

Here’s where the California NOL deduction suspension 2026 small business impact becomes especially damaging for some companies: the NOL suspension and the $5 million credit cap operate simultaneously. That means a business cannot use its NOL carryforward to reduce taxable income and faces a ceiling on the credits it can apply against any remaining tax liability.

Consider this scenario:

A Moreno Valley manufacturing company with $2 million in California net income had planned to apply $800,000 in NOL carryforwards to bring taxable income down to $1.2 million, then use $300,000 in California R&D credits and hiring credits to further reduce their state tax. Under SB 167, they cannot use the NOL carryforward at all in 2026 (income exceeds $1M), and their credits — while well under the $5M cap — are now offset against a larger tax base. Their effective California tax bill could be $150,000–$200,000 higher than anticipated.

For businesses with even larger accumulated NOL balances or credit portfolios, the combined impact is severe. This is precisely the kind of multi-variable California SALT tax planning 2026 scenario our team analyzes in depth for every affected client.

What the California NOL Deduction Suspension 2026 Does NOT Mean for Small Businesses

Before panic sets in, let’s be clear about what the suspension does not do:

• Your NOLs are not permanently eliminated. California extends your carryforward period for each year the deduction is disallowed. If you were set to carry a loss forward through 2030, you now effectively have until 2032 or 2033 (depending on how many suspension years apply).
• The $5 million credit cap does not cancel your credits. Excess credits are preserved and can be refunded over five post-suspension years at 20% per year — or used once the cap lifts after 2026.
• Businesses under $1 million in California net income are not affected by the NOL suspension. Credits are still capped at $5 million for all businesses regardless of size, but the NOL suspension only applies above the $1M income threshold.
• Federal NOL rules are unchanged. The federal 80% NOL limitation under IRC §172 continues to apply independently. California’s suspension is a state-only rule.

5 Tax Planning Strategies for California Small Businesses Facing the 2026 NOL Suspension

The suspension doesn’t leave you powerless. Here are the most effective responses our CPA services team recommends for Inland Empire and Moreno Valley business owners navigating the 2026 NOL suspension:

1. Recalculate Your 2026 California Estimated Tax Payments — Now

If you have been estimating 2026 quarterly payments based on an assumption that your NOL carryforward would reduce taxable income, those estimates are almost certainly too low. Underpaying California estimated tax payments 2026 triggers penalties — currently 5% plus monthly interest. Recalculate your 2026 Q3 and Q4 estimates (due September 15 and January 15, 2027) using your actual projected income without the NOL deduction.

2. Explore Income-Timing Strategies to Stay Below $1 Million

If your 2026 California net business income is projected between $850,000 and $1.2 million, there may be legitimate ways to manage the timing of income recognition or accelerate certain deductions into 2026 to bring you below the $1 million threshold — and make the NOL suspension irrelevant for your situation. Strategies include accelerating deductible business expenses, adjusting depreciation elections, or deferring receivable income legally under your accounting method. Work with your CPA to model both scenarios.

3. Prioritize Which Business Credits to Use First in 2026

With the California $5 million credit cap in place, businesses with multiple credit types need a deliberate credit ordering strategy. Generally, you want to apply non-refundable, non-carryable credits first (use them or lose them), then refundable or carryable credits. Your CPA should map out exactly which credits you hold, their expiration dates, and the optimal order of application to avoid permanently losing any valuable credits within the $5M ceiling.

4. Plan for the NOL Refund — But Don’t Rely on It for Liquidity

The post-2026 refundable credit mechanism provides some long-term relief, but the 20%/year repayment schedule means you won’t see full recovery for five years after the suspension ends. If your business is cash-flow sensitive, do not rely on this refund as a near-term liquidity source. Factor this deferred recovery into your multi-year financial projections.

5. Model the Federal vs. California Tax Divergence

As we covered in our recent post on California’s non-conformity with federal OBBBA provisions, California’s tax code is increasingly diverging from federal rules in 2026. Your federal return may show a dramatically different — and lower — taxable income than your California return. Make sure your tax software and CPA are building complete state-specific projections, not simply accepting federal figures as the California baseline. The IRS Publication 536 on NOLs provides a useful federal baseline comparison.

What Happens After 2026? The Scheduled Sunset of the California NOL Suspension

SB 167 was written as a temporary measure to help California close its budget gap during a period of revenue uncertainty. The suspension is scheduled to expire for tax years beginning on or after January 1, 2027. Assuming no further legislative extension, California businesses should be able to resume using NOL deductions and uncapped business credits beginning with their 2027 tax returns.

However, given California’s history of extending “temporary” tax measures, businesses would be wise to monitor budget legislation in 2026 and 2027. If the state faces continued deficit pressures, there is a non-trivial risk that the legislature extends these provisions beyond their current sunset date.

Our recommendation: build your multi-year tax model with both a “suspension ends in 2027” scenario and an “extended through 2028” scenario, so you understand your exposure under each outcome.

Quick Reference: SB 167 / SB 175 Key Facts for 2026 California NOL Suspension

Frequently Asked Questions: California NOL Deduction Suspension 2026 Small Business