This is general bookkeeping guidance, not tax advice. QBI calculations depend on your specific business structure, income level, and filing status. Consult a CPA or tax professional for advice specific to your situation.
If you own an LLC, run a sole proprietorship, operate as an S-corp, work as a contractor, or run a restaurant in Downey, Norwalk, Compton, Paramount, Lynwood, or Bellflower, the 2026 changes to the qualified business income deduction affect your federal tax return. They do not affect your California state tax return, and that difference is the most important thing to understand before tax season.
What the QBI Deduction Is
The qualified business income (QBI) deduction, established under Section 199A of the federal tax code, lets eligible pass-through business owners deduct a portion of their net qualified business income from their federal taxable income. Pass-through businesses are those where the business income flows directly to the owner's personal tax return: sole proprietors, single-member LLCs, partnerships, multi-member LLCs, and S-corporations. The deduction reduces the amount of that income subject to federal income tax, which can produce a meaningful reduction in the federal tax owed by qualifying owners.
Prior to 2026, the deduction was set at 20% of qualified business income. That rate applied since the deduction was introduced under the 2017 Tax Cuts and Jobs Act.
What Changed in 2026: The 23% Rate and the $400 Minimum
As of January 1, 2026, the QBI deduction rate increased from 20% to 23% under the One Big Beautiful Bill Act. This is a federal change only. It applies to qualifying pass-through business owners when they file their 2026 federal income tax return.
The same legislation introduced a second change: a minimum $400 QBI deduction for qualifying taxpayers who have qualified business income but whose calculated deduction would otherwise fall below that floor. This matters most for lower-income pass-through owners whose deduction would be negligible under the standard calculation. If the business generates qualified business income, the deduction is at least $400 on the federal return.
These are real changes with real federal tax impact. For a contractor in Compton with $80,000 in net profit, a 23% QBI deduction instead of 20% translates to a meaningfully lower federal taxable income figure. The bookkeeping records that support that deduction need to be accurate, organized, and clearly separated from personal income.
California Does Not Conform to the QBI Deduction
Critical point for California business owners: California has not adopted the federal QBI deduction under Section 199A, and it does not conform to the 2026 rate increase. California taxes pass-through income at ordinary state income tax rates with no corresponding deduction. This means you get the 23% federal QBI benefit on your federal return, and you owe California income tax on 100% of your pass-through income on your state return. Federal and state do not match. This is the most commonly misunderstood aspect of QBI for California LLC owners, sole proprietors, and S-corp owners.
To be concrete: if your LLC generates $100,000 in qualified business income and you qualify for the full federal deduction, your federal taxable income from that source drops to $77,000 (100% minus 23%). Your California taxable income from the same source remains $100,000. You file two returns with two different taxable income figures from the same business activity. That gap is not a bookkeeping error. It is the intended result of California's non-conformity with federal tax law.
This has a direct bookkeeping implication: if you use QuickBooks or another accounting platform, the federal and state tax calculations are separate computations. The software does not automatically apply California rules to the federal deduction or vice versa. Your CPA needs clean, accurate books for both returns, and the starting point (net qualified business income) has to be right before either calculation runs.
Who Qualifies for the Federal QBI Deduction
The QBI deduction is available to pass-through entities: sole proprietors, single-member LLCs taxed as disregarded entities, partnerships, multi-member LLCs taxed as partnerships, and S-corporations. Qualified business income is the net income from the business after deductible business expenses, not gross revenue. That distinction matters: the deduction is calculated on what the business actually earns net of legitimate business costs, not on the top-line number.
Income thresholds determine whether limitations apply. For 2026, the phase-out thresholds are approximately $197,300 for single filers and $394,600 for married filing jointly, though these figures may have adjusted for inflation under the bill. Check with your CPA for the current thresholds that apply to your specific situation. Below those thresholds, most qualifying pass-through owners can take the full deduction without additional restriction.
Specified service trade or business (SSTB) owners face a different situation. The SSTB category includes lawyers, financial advisors, accountants, health professionals, consultants, and athletes, among others. For SSTB owners whose income exceeds the phase-out thresholds, the QBI deduction phases out and may be eliminated entirely. For SSTB owners below the thresholds, the deduction is generally available. Contractors, restaurant operators, truckers, bookkeepers, and most small businesses in Southeast LA County are not in the SSTB category and qualify for the deduction if their income is within the limits.
The W-2 Wage Limitation Above the Income Threshold
For pass-through owners whose income exceeds the phase-out thresholds, the QBI deduction does not simply disappear. Instead, it becomes limited to whichever is greater: 50% of W-2 wages paid by the business, or 25% of W-2 wages paid plus 2.5% of the unadjusted basis of qualified property held by the business.
This limitation is particularly relevant for single-member LLCs and sole proprietors with no employees, a common structure in SE LA County. With no W-2 payroll, there are zero wages to apply against the limitation, and the deduction may be zero even for a profitable business once income exceeds the threshold. This is a significant planning consideration to address with a CPA early.
If you do have W-2 employees, those payroll records need to be accurate and complete. The W-2 wage figure used in the limitation calculation comes from the business's payroll records. If payroll is disorganized, understated, or commingled with owner distributions, the W-2 wage number available to support the deduction is unreliable. For a detailed look at how W-2 and 1099 classification affects your books and your tax position, see the California W-2 vs. 1099 bookkeeping guide.
What Your Books Need to Support the QBI Deduction
The QBI deduction is calculated by your CPA on your tax return. The underlying data that makes that calculation possible comes from your bookkeeping records. Four areas directly affect it:
Business and personal income separated. QBI is net qualified business income. If personal deposits or expenses are mixed into the business account, the net profit figure the CPA works from is wrong. Commingling is the most common distortion in QBI calculations. For LLC owners, the California LLC bookkeeping requirements guide covers the separation rules.
Net profit tracked correctly, not gross revenue. The deduction applies to net qualified business income. Expenses that belong to 2026 need to be posted in 2026, not reconciled at year-end. Uncategorized or missing expenses understate the true deductible figure.
W-2 wage records accurate and reconciled. The W-2 wage limitation uses wages reported to the IRS on Forms W-2, not estimates. Payroll records that do not reconcile to W-2 totals create a discrepancy the CPA has to untangle. See the contractor bookkeeping guide for how payroll tracking interacts with the limitation.
California and federal books kept separately. California does not conform to the QBI deduction, so the state return starts from a different taxable income figure than the federal return. QuickBooks supports separate state and federal tax tracking, but it must be configured correctly. The chart of accounts and tax mapping need to be set up so the federal deduction does not carry over into the California calculation.
What This Means for SE LA Contractors, Restaurant Owners, and LLC Owners
Most contractors, restaurant operators, and LLC owners in Downey, Norwalk, Compton, Paramount, Lynwood, and Bellflower who are below the income thresholds and running a trade or service business (not an SSTB) qualify for the full 23% federal QBI deduction in 2026. The deduction is real money, and it is only available if the underlying books are accurate.
California income tax on pass-through income does not change because of the federal rate increase. The state return taxes the full net income at ordinary state rates. Business owners planning estimated tax payments for 2026 need to account for this split: lower federal obligation, unchanged California obligation. Clean, separated books are the starting point for getting both returns right.
Get Your Books Ready for the 2026 QBI Deduction
If your books are behind, commingled, or not set up to track federal and California calculations separately, a catch-up engagement is the faster path to a clean filing position. J.P Bookkeeping works with LLC owners, sole proprietors, S-corp owners, contractors, and restaurant operators throughout Downey, Norwalk, Compton, Paramount, Lynwood, and Bellflower. Jimmy reviews your current records, identifies what needs to be corrected, and provides a specific cost estimate before any work begins. Services are available in English and Spanish.
Book a free consultation at jpbookkeepingbusiness.com/appointments or call (323) 816-0517. No commitment, no vague pricing.
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Disclaimer: J.P Bookkeeping is a bookkeeping firm, not a CPA or law firm. For tax planning, legal questions, or regulatory compliance, consult a licensed CPA or attorney. Information reflects publicly available requirements as of June 8, 2026. Confirm current IRS rates and thresholds at irs.gov and ftb.ca.gov before filing.