Starting a business is exciting, but understanding your tax obligations from day one is crucial for long-term success. Many new entrepreneurs underestimate the complexity of business taxes, leading to costly mistakes, penalties, and missed opportunities for tax savings.
At Taveras Tax Firm, we help new business owners navigate tax requirements with confidence. This comprehensive guide covers everything you need to know about business taxes when starting your entrepreneurial journey in 2026.
Pre-Launch Tax Considerations
Choosing Your Business Structure
One of the first and most important decisions is choosing your business entity structure. This decision significantly impacts your taxes, liability protection, and administrative requirements.
Sole Proprietorship:
- Simplest structure—no formal registration required
- Report business income on Schedule C of your personal return
- Subject to self-employment tax on all net income
- No liability protection (personal assets at risk)
Single-Member LLC:
- Provides liability protection
- Default tax treatment same as sole proprietorship
- Can elect S Corporation or C Corporation taxation
- More credible than sole proprietorship
Multi-Member LLC:
- Liability protection for all members
- Default tax treatment as partnership
- Flexible profit distribution
- Requires partnership tax return (Form 1065)
S Corporation:
- Potential self-employment tax savings
- Must pay reasonable salary to owner-employees
- Strict ownership requirements (max 100 shareholders, all U.S. citizens/residents)
- Requires corporate formalities
C Corporation:
- Best for businesses seeking outside investment
- Double taxation on profits and dividends
- No ownership restrictions
- Most complex and expensive to maintain
Obtaining an EIN (Employer Identification Number)
An EIN is like a Social Security number for your business. You need one if you:
- Have employees
- Operate as a corporation or partnership
- File employment, excise, or alcohol/tobacco/firearms tax returns
- Want to separate business and personal finances (recommended even if not required)
Apply for an EIN free at IRS.gov. The process takes just a few minutes and you’ll receive your EIN immediately.
Registering with State and Local Authorities
- Register your business name
- Obtain necessary licenses and permits
- Register for state tax ID numbers
- Register for sales tax collection (if applicable)
- Register with state unemployment and workers’ compensation programs (if you have employees)
Understanding Your Tax Obligations
Income Tax
How your business income is taxed depends on your entity structure:
- Sole Proprietors and Single-Member LLCs: Report on Schedule C of Form 1040
- Partnerships and Multi-Member LLCs: File Form 1065; partners report their share on Schedule K-1
- S Corporations: File Form 1120-S; shareholders report their share on Schedule K-1
- C Corporations: File Form 1120; corporation pays tax on profits
Self-Employment Tax
If you’re self-employed (sole proprietor or partner), you must pay self-employment tax—both the employee and employer portions of Social Security and Medicare:
- 15.3% on net self-employment income up to $168,600 (2026)
- 2.9% Medicare tax on income above the wage base
- Additional 0.9% Medicare tax on income over $200,000 (single) or $250,000 (married filing jointly)
S Corporation shareholders can reduce self-employment tax by taking salary subject to employment taxes and additional distributions not subject to these taxes (but must pay reasonable salary).
Employment Taxes (If You Have Employees)
- Federal income tax withholding from employee paychecks
- Social Security and Medicare taxes (employer and employee portions)
- Federal unemployment tax (FUTA)
- State unemployment tax
- Workers’ compensation insurance
File Form 941 quarterly to report employment taxes.
Estimated Tax Payments
As a business owner, you’re responsible for paying taxes throughout the year via quarterly estimated payments. Calculate and pay estimated taxes covering both income tax and self-employment tax.
2026 Quarterly Due Dates:
- Q1: April 15, 2026
- Q2: June 15, 2026
- Q3: September 15, 2026
- Q4: January 15, 2027
Sales Tax (If Applicable)
If you sell products or certain services, you may need to collect and remit sales tax. Requirements vary by state and locality. Register with your state tax authority and understand your collection and remittance obligations.
Essential Business Tax Deductions
Startup Costs
You can deduct up to $5,000 in startup costs in your first year (reduced dollar-for-dollar for costs exceeding $50,000). Remaining costs are amortized over 180 months.
Startup costs include:
- Market research and analysis
- Advertising for business opening
- Employee training before business opens
- Travel and professional fees
- Licenses and permits
Operating Expenses
Ordinary and necessary business expenses are deductible:
- Rent or lease payments for business space
- Utilities
- Insurance premiums
- Office supplies
- Professional fees (legal, accounting)
- Software and technology
- Marketing and advertising
- Business meals (50% deductible)
- Business travel
Home Office Deduction
If you use part of your home exclusively for business, you can deduct home office expenses:
- Simplified Method: $5 per square foot, up to 300 square feet ($1,500 maximum)
- Regular Method: Deduct actual expenses based on percentage of home used for business
Vehicle Expenses
- Standard Mileage: 67 cents per business mile (2026)
- Actual Expenses: Deduct actual costs based on business-use percentage
Keep detailed mileage logs documenting business use.
Equipment and Assets
Section 179 Expensing: Deduct up to $1,220,000 for equipment purchases in 2026
Bonus Depreciation: Additional first-year depreciation for qualifying property
Regular Depreciation: Spread deduction over asset’s useful life
Setting Up Your Business Finances
Separate Bank Accounts
Open dedicated business bank accounts and credit cards. This simplifies bookkeeping, provides audit protection, and maintains the corporate veil for LLCs and corporations.
Accounting System
Implement an accounting system from day one:
- Use accounting software (QuickBooks, Xero, FreshBooks)
- Track all income and expenses
- Categorize transactions properly
- Reconcile accounts monthly
- Generate financial reports regularly
Record Keeping
Maintain organized records of:
- All business income (invoices, sales receipts)
- All business expenses (receipts, invoices)
- Bank and credit card statements
- Mileage logs
- Asset purchase documentation
- Contracts and agreements
Keep records for at least three years (longer for certain items).
First-Year Tax Planning Strategies
Choose Your Accounting Method
Cash Method: Report income when received, expenses when paid. Simpler and provides some timing control.
Accrual Method: Report income when earned, expenses when incurred. Required for businesses with inventory or revenues exceeding $27 million.
Most small businesses use cash method.
Consider Your Tax Year
Most businesses use a calendar tax year (January 1 – December 31), but some may benefit from a fiscal year (any 12-month period). Partnerships, S Corporations, and personal service corporations generally must use calendar year.
Maximize First-Year Deductions
- Purchase necessary equipment before year-end to claim Section 179 deduction
- Pay business expenses in December rather than January
- Defer income to next year if beneficial
- Make retirement plan contributions
Set Up Retirement Plans
Retirement plan contributions reduce taxable income while building wealth:
- SEP IRA: Contribute up to 25% of net self-employment income or $69,000
- Solo 401(k): Contribute up to $69,000 ($76,500 if age 50+)
- SIMPLE IRA: Contribute up to $16,000 ($19,500 if age 50+)
Common Tax Mistakes New Business Owners Make
Mixing Personal and Business Finances
Using business accounts for personal expenses (or vice versa) creates bookkeeping nightmares and can pierce the corporate veil. Keep everything separate from day one.
Not Making Estimated Tax Payments
Failing to make quarterly estimated payments results in underpayment penalties and a large tax bill in April. Calculate and pay estimated taxes from your first profitable quarter.
Poor Record Keeping
Without proper documentation, you can’t substantiate deductions. Implement strong record-keeping systems immediately.
Misclassifying Workers
Incorrectly classifying employees as independent contractors can result in back taxes, penalties, and interest. Understand the difference and classify correctly.
Neglecting Sales Tax
If you’re required to collect sales tax but don’t, you’re personally liable for the tax plus penalties and interest. Register and comply from the start.
Not Planning for Self-Employment Tax
Many new entrepreneurs are shocked by the 15.3% self-employment tax. Budget for this in addition to income tax.
Choosing Wrong Entity Structure
The initial entity choice significantly impacts taxes. Research options or consult a professional before forming your business.
Hiring Your First Employee
When you hire your first employee, new tax obligations begin:
- Obtain EIN (if you don’t already have one)
- Register with state employment agencies
- Set up payroll system
- Withhold and remit employment taxes
- File quarterly Form 941
- Provide W-2s to employees by January 31
- File annual Form 940 (federal unemployment tax)
- Obtain workers’ compensation insurance
Consider using payroll service or software to ensure compliance.
State and Local Tax Considerations
Don’t forget about state and local taxes:
- State income tax on business profits
- State sales tax (if applicable)
- Local business taxes and licenses
- Property taxes on business property
- Franchise or gross receipts taxes (varies by state)
Requirements vary significantly by location. Research your state and local obligations thoroughly.
Year-End Tax Planning for New Businesses
In your first year, year-end planning is especially important:
- Review profit and loss to project final tax liability
- Consider accelerating expenses into current year
- Evaluate whether to defer income to next year
- Make final estimated tax payment
- Review and adjust withholding or estimated payments for next year
- Consider retirement plan contributions
- Review entity structure—is it still optimal?
When to Hire a Tax Professional
Consider professional help if you:
- Have complex business structure or transactions
- Have employees
- Operate in multiple states
- Are unsure about entity selection
- Want to minimize taxes strategically
- Need help with compliance
- Want to focus on running your business rather than taxes
The cost of professional services is tax-deductible and often pays for itself through tax savings and avoided penalties.
Resources for New Business Owners
- IRS Small Business and Self-Employed Tax Center: Comprehensive information on business taxes
- Small Business Administration (SBA): Business guidance and resources
- SCORE: Free business mentoring and workshops
- State Tax Authority: State-specific tax information
- Local Small Business Development Centers: Free business advising
How Taveras Tax Firm Can Help
At Taveras Tax Firm, we specialize in helping new business owners navigate tax requirements. Our services include:
- Entity selection guidance
- Business formation assistance
- Tax registration and setup
- Accounting system implementation
- Bookkeeping services
- Quarterly tax projections and estimated payment calculations
- Payroll setup and processing
- Year-round tax planning and strategy
- Business tax preparation and filing
- IRS and state tax authority representation
We help you start your business on the right foot with proper tax foundation and ongoing support.
Conclusion
Starting a business is challenging enough without worrying about tax compliance. By understanding your tax obligations from day one, implementing proper systems, and planning strategically, you can minimize taxes while focusing on growing your business.
Don’t let taxes be an afterthought. Proper tax planning and compliance from the start sets you up for long-term success and helps you avoid costly mistakes.
Starting a business in 2026? Contact Taveras Tax Firm today to schedule a new business consultation. We’ll help you choose the right structure, set up proper systems, and develop a tax strategy that supports your business goals.