Small Business Tax FAQ: Entity Elections, CA Franchise Tax & Deductions (2026)

The choice of entity tax classification has significant implications for how your business income is taxed. A single-member LLC is treated as a disregarded entity by default - all income flows to your personal return on Schedule C, and you pay self-employment tax (15.3%) on net profits. A multi-member LLC is taxed as a partnership, filing Form 1065 and issuing K-1s to each member. Neither the LLC nor the partnership pays entity-level federal tax; instead, income passes through to the owners' individual returns.

An S-Corporation election (filed via Form 2553 with the IRS) allows the business to avoid self-employment tax on distributions. The owner-employee must receive a "reasonable salary" subject to payroll taxes, but profits above the salary can be distributed as dividends free of the 15.3% self-employment tax. This typically saves money when annual profits exceed ,000-,000 after salary. S-Corps are limited to 100 shareholders, all of whom must be U.S. citizens or residents, and only one class of stock is permitted.

A C-Corporation is a separate taxpaying entity subject to a flat 21% federal corporate tax rate (Tax Cuts and Jobs Act). Distributions to shareholders are then taxed again as dividends, creating "double taxation." However, C-Corps offer flexibility for retained earnings, fringe benefits (100% deductible health insurance), and equity compensation. C-Corp status may be advantageous for businesses planning to reinvest profits rather than distribute them, or for those seeking venture capital investment.

California imposes an annual minimum franchise tax on LLCs, S-Corporations, C-Corporations, and limited partnerships doing business in the state, regardless of whether the entity earned any income. This tax is due on the 15th day of the 4th month after the entity's tax year begins (typically April 15 for calendar-year filers). The franchise tax applies to any entity formed in California or registered to do business in the state as a foreign entity.

Important exceptions and details: First-year LLCs formed on or after January 1, 2021 are exempt from the minimum franchise tax for their first taxable year under AB 85. Starting in year two, the full applies. For LLCs with gross receipts exceeding ,000, an additional annual fee applies: for receipts of K-K, ,500 for K-M, ,000 for M-M, and ,790 for over M. This fee is in addition to the minimum, not a replacement.

The franchise tax applies regardless of where your entity is formed. If you create a Wyoming LLC but conduct business in California, you owe both Wyoming's annual report fee () and California's franchise tax plus the foreign entity registration fee. For low-revenue businesses, this makes California one of the most expensive states for business entity maintenance. The California Franchise Tax Board (FTB) administers this tax, and failure to pay results in penalties, interest, and potential suspension of your entity's powers.

If you expect to owe ,000 or more in federal taxes for the year (after subtracting withholding and credits), you must make quarterly estimated tax payments using Form 1040-ES. The due dates are April 15, June 15, September 15, and January 15 of the following year. California requires estimated tax payments if you expect to owe or more ( if married filing separately), using Form 540-ES with the same federal due dates.

To calculate your estimated payments, you can use either the "current year" method (estimate your actual tax liability and pay 90% in quarterly installments) or the "prior year safe harbor" (pay 100% of last year's tax liability in quarterly installments, or 110% if your AGI exceeded ,000). The safe harbor method protects you from underpayment penalties even if your actual income is higher than estimated. For S-Corps and C-Corps, separate corporate estimated tax payments apply.

Self-employed individuals must include both income tax and self-employment tax (15.3% on net earnings up to the Social Security wage base, then 2.9% Medicare tax on all earnings above) in their estimated payments. Failing to make adequate estimated payments triggers an underpayment penalty calculated by the IRS using the federal short-term interest rate plus 3 percentage points. Use IRS Form 2210 to calculate or request a waiver of the penalty if your income was uneven throughout the year.

Pass-through taxation means the business entity itself does not pay federal income tax. Instead, profits and losses "pass through" to the owners' individual tax returns, where they are taxed at each owner's personal income tax rate. This is the default treatment for sole proprietorships, single-member LLCs (Schedule C), partnerships, multi-member LLCs (Form 1065/K-1), and S-Corporations (Form 1120-S/K-1). The entity files an informational return but the tax obligation falls on the individual owners.

Key advantages of pass-through taxation include avoiding the double taxation that C-Corps face (corporate tax plus dividend tax), the ability to deduct business losses against other personal income (subject to at-risk and passive activity rules), and potential eligibility for the Section 199A Qualified Business Income deduction of up to 20% of qualified business income. Losses from pass-through entities can offset wages, investment income, and other income on the owner's personal return, subject to limitations.

Important limitations apply: passive activity loss rules (IRC Section 469) prevent passive investors from deducting losses against active income unless they materially participate in the business. The excess business loss limitation (IRC Section 461(l)) caps the amount of business losses that can offset non-business income at ,000 for single filers (,000 married filing jointly, adjusted annually for inflation). California conforms to federal pass-through treatment but adds its own minimum franchise tax regardless of income level.

The Qualified Business Income (QBI) deduction, established by the Tax Cuts and Jobs Act under IRC Section 199A, allows eligible taxpayers to deduct up to 20% of their qualified business income from pass-through entities (sole proprietorships, LLCs, partnerships, and S-Corporations). This deduction is taken on the individual return and reduces taxable income but not adjusted gross income or self-employment tax. The deduction is currently scheduled through tax year 2025 but may be extended by Congress.

Eligibility and limitations depend on taxable income and business type. For 2025, taxpayers with taxable income below ,950 (single) or ,900 (married filing jointly) can claim the full 20% deduction regardless of business type. Above these thresholds, the deduction phases out for "specified service trades or businesses" (SSTBs) including law, medicine, consulting, financial services, and performing arts. For non-SSTB businesses above the threshold, the deduction is limited to the greater of 50% of W-2 wages paid by the business or 25% of W-2 wages plus 2.5% of the unadjusted basis of qualified property.

Practical implications: If you operate a consulting firm earning ,000 in QBI and your taxable income is below the threshold, you can deduct ,000 (20% x ,000), saving roughly ,400-,400 depending on your tax bracket. S-Corp shareholders should note that the reasonable salary paid to themselves counts as W-2 wages, which can help satisfy the W-2 wage limitation for higher-income taxpayers. The QBI deduction is one of the most valuable tax benefits for small business owners and should factor into entity selection decisions.

The home office deduction allows self-employed individuals and certain employees to deduct expenses for the business use of their home. To qualify, you must use a specific area of your home regularly and exclusively as your principal place of business, a place to meet clients, or a separate structure used in connection with your business. The "exclusive use" requirement means the space cannot double as a guest bedroom or family room, though a dedicated desk in a corner of a room may qualify if that area is used only for business.

Two calculation methods are available: The regular method calculates actual expenses (mortgage interest or rent, utilities, insurance, repairs, depreciation) proportional to the percentage of home used for business (typically calculated by square footage). The simplified method allows a deduction of per square foot of home office space, up to 300 square feet, for a maximum deduction of ,500 per year. The regular method often yields a larger deduction but requires more detailed record-keeping.

Important limitations: The deduction cannot create or increase a business loss under the regular method (it is limited to your business gross income minus other business expenses). Employees who work from home generally cannot claim the home office deduction under the Tax Cuts and Jobs Act, which suspended the employee business expense deduction through 2025. Self-employed individuals filing Schedule C, Schedule F, or partners receiving K-1 income remain eligible. California conforms to the federal home office deduction rules for state tax purposes.

Self-employment tax consists of Social Security tax (12.4% on net earnings up to the wage base, which is ,100 for 2025) and Medicare tax (2.9% on all net earnings, plus an additional 0.9% Medicare surtax on earnings exceeding ,000 for single filers or ,000 for married filing jointly). The combined rate is 15.3% on earnings up to the Social Security wage base. As a self-employed individual, you pay both the employer and employee portions. You can deduct the employer-equivalent portion (7.65%) as an adjustment to income on your personal return.

The most common strategy to reduce self-employment tax is electing S-Corporation taxation. As an S-Corp, you pay yourself a reasonable salary (subject to payroll taxes), but remaining profits distributed as shareholder dividends are not subject to self-employment tax. For example, if your business earns ,000 and you pay yourself a ,000 salary, the ,000 in distributions avoids the 15.3% self-employment tax, saving approximately ,650. However, you must pay yourself a "reasonable" salary; the IRS scrutinizes unreasonably low salaries.

Other strategies include maximizing above-the-line deductions (retirement contributions, health insurance premiums, half of self-employment tax), contributing to a SEP-IRA (up to 25% of net self-employment earnings, max ,000 for 2024), Solo 401(k) plans (up to ,000 employee contribution plus 25% employer contribution), and health savings accounts (HSAs) if enrolled in a high-deductible health plan. Proper business expense tracking and deductions reduce net earnings, which directly reduces self-employment tax liability.

Small businesses can claim numerous deductions that significantly reduce taxable income. The Section 179 deduction allows immediate expensing of qualifying business assets (equipment, vehicles, software, furniture) up to ,220,000 for 2024, rather than depreciating them over multiple years. Bonus depreciation allows 60% first-year depreciation on new and used qualifying assets in 2024 (phasing down 20% per year). Vehicle deductions follow either the standard mileage rate (/bin/zsh.67/mile for 2024) or actual expenses, and heavy SUVs over 6,000 lbs GVW qualify for enhanced Section 179 deductions.

Operating expenses deductible in full include: rent for business premises, utilities, business insurance premiums, office supplies and equipment, professional services (accounting, legal), marketing and advertising, business travel (airfare, lodging, ground transportation), business meals (50% deductible), employee wages and benefits, retirement plan contributions, and health insurance premiums for self-employed individuals (100% deductible as an above-the-line adjustment). Software subscriptions, cloud services, and technology expenses are also fully deductible.

Often-overlooked deductions include: startup costs (up to ,000 immediately deductible in the first year, per IRC Section 195), education and training expenses related to your current business, professional association dues, business-related subscriptions and publications, bank fees and credit card processing charges, bad debts written off, and state and local taxes (subject to the ,000 SALT deduction cap for pass-through entities on individual returns). Maintaining meticulous records with receipts is essential, as the burden of proof for deductions falls on the taxpayer.

The IRS requires businesses to maintain records that support income, deductions, and credits reported on tax returns. Essential records include: gross receipts documentation (cash register tapes, bank deposit slips, receipt books, invoices, credit card charge slips, and Form 1099-MISC/NEC), purchase records (canceled checks, credit card statements, invoices), expense documentation (receipts, canceled checks, account statements), travel and entertainment logs (date, place, business purpose, amount, relationship to business), and asset records (purchase date, cost, depreciation schedules).

The general rule is to keep records for at least three years from the date you filed the return or two years from the date the tax was paid, whichever is later. However, important exceptions apply: keep records for six years if you underreported gross income by more than 25%, keep records for seven years if you filed a claim for a loss from worthless securities or bad debt deduction, and keep records indefinitely if you filed a fraudulent return or did not file a return. Employment tax records must be kept for at least four years after the date the tax becomes due or is paid, whichever is later.

Best practices for record-keeping include: using accounting software (QuickBooks, Xero, FreshBooks) to track income and expenses in real time, maintaining a separate business bank account and credit card, scanning and digitally storing all receipts (the IRS accepts digital copies), reconciling accounts monthly, and keeping mileage logs for vehicle deductions. California follows the same general retention periods as the IRS. For asset and depreciation records, maintain documentation for as long as you own the asset plus the applicable retention period after disposal.

The most common tax penalties for small businesses include: failure to file (5% of unpaid tax per month, up to 25%), failure to pay (0.5% of unpaid tax per month, up to 25%), underpayment of estimated taxes (variable rate based on federal short-term rate plus 3%), accuracy-related penalty (20% of the underpayment attributable to negligence or substantial understatement), and failure to deposit employment taxes (2%-15% depending on lateness). These penalties accrue interest from the due date until paid in full.

To minimize penalties: file all returns on time even if you cannot pay the full amount (the failure-to-file penalty is 10 times the failure-to-pay penalty), make timely estimated tax payments using the safe harbor method (100% of prior year tax, or 110% if AGI exceeds ,000), deposit payroll taxes on schedule (semi-weekly or monthly depending on your deposit schedule), maintain accurate and complete records, and respond promptly to all IRS and state tax notices.

To reduce audit risk: report all income (the IRS receives copies of all 1099s and W-2s and matches them against your return), avoid excessive or disproportionate deductions relative to your income level, file complete and accurate returns without mathematical errors, provide detailed descriptions for large or unusual deductions, maintain contemporaneous records for travel and entertainment expenses, and avoid claiming the home office deduction unless you genuinely qualify. Businesses with gross receipts under ,000 have a relatively low audit rate, but specific red flags (cash-intensive businesses, large charitable deductions, repeated losses) can trigger examination regardless of size.