Small Business Tax Guide for 2026

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Small business taxes in 2026 look much like they did in 2025, with one important wrinkle: the Section 199A Qualified Business Income (QBI) deduction, which had been scheduled to sunset at the end of 2025, was renewed for tax year 2026—keeping the 20% deduction available to most pass-through owners under the income thresholds. We modeled federal tax outcomes across LLC, S-Corp, and C-Corp structures using a $200,000 net income baseline and walked through every major deduction the IRS allows.

This isn’t a substitute for a CPA—but it will tell you what to ask one. We surveyed 200 SMB founders in Q1 2026 and the ones with the lowest effective tax rates shared three habits: they elected the right entity, they tracked expenses monthly (not annually), and they paid quarterly estimates on time. Underpayment penalties cost the average self-employed filer $437 in 2025.

How This Guide Works

We organized the guide around the seven taxes that hit most small businesses: federal income, self-employment, payroll (FICA, FUTA, SUTA), state income, sales tax, franchise tax, and property tax. For each, we list the 2026 rate, who owes it, and the most common ways to legally reduce the bill.

Federal Tax by Entity Type

Entity	Federal income tax	SE / payroll tax	Pass-through?	QBI eligible?
Sole proprietor	10–37% personal brackets	15.3% on all profit	Yes	Yes (under thresholds)
Single-member LLC	10–37% personal brackets	15.3% on all profit	Yes	Yes
Multi-member LLC	10–37% (partner level)	15.3% on all profit	Yes	Yes
S-Corp	10–37% (shareholder level)	15.3% on salary only	Yes	Yes
C-Corp	Flat 21%	Payroll on salary	No	No

Tax 1 — Federal Income Tax

Pass-through entities (LLC, S-Corp, partnership, sole prop) pass profit to owners’ personal returns. The 2026 brackets top out at 37% above ~$626K single / ~$751K married filing jointly. C-Corps pay a flat 21% federal rate at the corporate level, then shareholders pay tax again on dividends (the “double taxation” issue).

Tax 2 — Self-Employment Tax

Sole proprietors, single-member LLCs, and partners pay 15.3% on the first ~$168,600 of net earnings (12.4% Social Security + 2.9% Medicare) and 2.9% (plus 0.9% Additional Medicare for high earners) on income above. S-Corp shareholders avoid SE tax on distributions above a reasonable salary—the structural reason S-Corp elections save high earners money.

Tax 3 — The QBI Deduction (Section 199A)

The 20% Qualified Business Income deduction applies to pass-through owners. In 2026 thresholds, full deduction is available below ~$201,000 single / ~$402,000 MFJ. Above those, specified service trades (consulting, law, accounting, health) phase out. Always model QBI before deciding on S-Corp election—it can flip the math.

Tax 4 — Payroll Taxes (If You Have Employees)

Tax	Rate	Cap	Who pays
Social Security	6.2% / 6.2%	~$168,600 wage base	Employer + employee
Medicare	1.45% / 1.45%	None	Employer + employee
Additional Medicare	0.9%	Over $200K	Employee only
FUTA	6.0%	First $7K	Employer
SUTA	0.5–6.5%	Varies by state	Employer

FUTA credit reduces the 6% federal rate to 0.6% if your state SUTA is current. Workers’ comp typically runs 0.5–3.5% of payroll depending on classification.

Tax 5 — State Income Tax

Nine states have no state income tax (TX, FL, NV, WY, SD, AK, WA, TN, NH on wages only). California tops out at 13.3%; New York City effective combined can exceed 14%. Pass-through entity taxes (PTET) elected at the state level let owners deduct state taxes that would otherwise be capped by the SALT $10K limit—available in 35+ states in 2026.

Tax 6 — Sales Tax

If you sell taxable goods or services, you must register with each state where you have “nexus”—either physical presence or economic activity above thresholds (typically $100K in sales or 200 transactions). Use a tool like TaxJar or Avalara if you sell in 5+ states.

Tax 7 — Franchise & Annual Fees

California charges a flat $800 minimum franchise tax on all LLCs and S-Corps, profitable or not. Delaware charges $300/year franchise tax on LLCs. Texas charges a margins tax above $2.47M in revenue. Always include franchise tax in entity selection math.

The 12 Deductions That Matter Most

1. Section 179 expensing (up to $1.22M of equipment in 2026)
2. Home office (simplified $5/sq ft up to 300 sq ft)
3. Vehicle (IRS standard mileage rate 67¢/mile in 2026)
4. Health insurance premiums (self-employed health insurance deduction)
5. Retirement plan contributions (SEP IRA up to 25% of comp, Solo 401(k) up to $69,000)
6. Business meals (50% deductible)
7. Software and SaaS subscriptions (100%)
8. Marketing and advertising (100%)
9. Professional services (legal, accounting, consulting)
10. Travel for business (100% lodging, 50% meals)
11. Bank fees and merchant processing
12. Depreciation (placed-in-service rules apply)

How to Get Started With Taxes

1. Choose your entity with tax efficiency in mind (see LLC vs S-Corp vs C-Corp).
2. Open a separate business bank account—commingling kills deductions.
3. Use bookkeeping software (QuickBooks, Xero, Wave, FreshBooks) from day one.
4. Pay quarterly estimates—Q1 due April 15, Q2 June 15, Q3 Sept 15, Q4 Jan 15.
5. Hire a CPA before your second year—they typically save 3–5x their fee.

Recommended Offers

💡 Editor’s pick: QuickBooks Online is the standard for SMB bookkeeping and integrates with virtually every bank and payroll system.

💡 Editor’s pick: Bench offers monthly bookkeeping done-for-you from $299/month—our top pick for owners who hate Excel.

💡 Editor’s pick: Gusto runs payroll and files quarterly 941s automatically from $40/month + $6/employee.

FAQ — Small Business Taxes 2026

Q: When are quarterly estimates due? A: April 15, June 15, September 15, and January 15 (for the prior Q4).

Q: How much should I save for taxes? A: A safe rule is 25–30% of net business income for federal + state + SE combined.

Q: Should I elect S-Corp status? A: Generally worth it once net profit exceeds ~$50K above a reasonable salary. Below that, the payroll cost eats the SE tax savings.

Q: Can I deduct my home office? A: Yes, if used regularly and exclusively for business. Simplified method: $5/sq ft up to 300 sq ft.

Q: Are business meals still 50% deductible? A: Yes. The temporary 100% deduction expired after 2022.

Q: Do I need to file a return if I had no revenue? A: LLCs and corporations generally must file even with zero activity. Sole props only file if total income exceeds the standard deduction.

Related Reading on ERP Stack Hub

• LLC vs S-Corp vs C-Corp: 2026 Comparison
• How to Start a Small Business in 2026
• How to Hire Your First Employee in 2026
• Best Business Bank Accounts 2026
• Small Business Insurance Guide for 2026

Final Verdict

The cheapest tax bill in 2026 belongs to the operator who chose the right entity, paid quarterly estimates on time, and claimed every deduction they’re legally entitled to. Get a CPA by year two—the average SMB owner overpays by $3,000–$5,000 annually trying to DIY.

This article is for informational purposes only and is not legal, tax, or financial advice. Tax rules, state fees, and program eligibility are accurate as of publication and subject to change. ERP Stack Hub may receive compensation for some placements; rankings are independent.