- 💰 Average $15K+ Tax Savings • 48hr Response • 100% Audit Support
Business Tax Preparation: CPA-Led Strategies to Save 15K+
Business tax preparation in USA helps companies save over $15,000 annually. Our CPAs uncover missed deductions and restructure your business for maximum savings, so you keep more of what you earn.
Average Annual Tax Savings
$
k+
Avg. Expert Response Time
0
hrs
Audit Support Included
0
%
Business tax preparation, business tax filing services, and corporate tax preparation are part of our specialized solutions, including 1040 Form, 1020S Form, and 1120 Form.
Business Tax Preparation Pricing by Revenue
Clear, transparent pricing based on your business size. All packages include complete tax preparation, strategic planning, and IRS audit support. See detailed service breakdown →
Startup
Under $100k Revenue
Starting at
$330
complete filing
Perfect for:
- Single-member LLCs
- Partnership
- S-Corporation
- C-Corporation
What's Included:
- Home office optimization
- Reasonable salary analysis
- Vehicle deductions
- QBI deduction optimization
- Section 179 depreciation
- K1-Generation upto 2 partner
- Audit support included
Add-Ons:
- Extra state: +$125
- Extra K-1 Generation: +$30
- R&D tax credit: +$200
💯 $15K+ avg savings
- Most Popular
Growth
$100K – $250K Revenue
Starting at
$550
complete filing
Perfect for:
- Single-member LLCs
- Partnership
- S-Corporation
- C-Corporation
What's Included:
- Home office optimization
- Reasonable salary analysis
- Vehicle deductions
- QBI deduction optimization
- Section 179 depreciation
- K1-Generation upto 2 partner
- Audit support included
Add-Ons:
- Extra state: +$125
- Extra K-1 Generation: +$30
- R&D tax credit: +$200
💯 $15K+ avg savings
Established
$250K – $500K Revenue
Starting at
$750
complete filing
Perfect for:
- Single-member LLCs
- Partnership
- S-Corporation
- C-Corporation
What's Included:
- Home office optimization
- Reasonable salary analysis
- Vehicle deductions
- QBI deduction optimization
- Section 179 depreciation
- K1-Generation upto 2 partner
- Audit support included
Add-Ons:
- Extra state: +$125
- Extra K-1 Generation: +$30
- R&D tax credit: +$200
💯 $15K+ avg savings
📋 Year-Round Add-On Services
- Monthly Bookkeeping: Starting $75/month
- Quarterly Tax Planning: $500/quarter
- Payroll Processing: $500/month + $10/employee
- Sales Tax Filing: $200/state/quarter
- Entity Conversion (LLC to S-Corp): $200
- IRS Representation (beyond audit): $300/hour
🏆 Complete Business CFO Package
$3,500+/mo
Comprehensive year-round support including: monthly bookkeeping, quarterly tax planning, annual business tax preparation, payroll processing, cash flow management, entity optimization, sales tax compliance, and dedicated senior CPA team.
🎯 Why Choose CPA-Led Business Tax Preparation?
💰
vs. DIY Software
We find $15K+ more in deductions vs TurboTax Business – easily covering our fee 3-5X over
🏆
vs. H&R Block
Senior CPAs (not seasonal preparers) at 40% lower cost than national chains
🛡️
100% US-Based
Your data never leaves the US – no offshore outsourcing like other firms
Questions about pricing? See FAQ or schedule a free consultation
Expert Business Tax Preparation Services by Entity Type
Comprehensive CPA-led business tax filing for every business structure. From sole proprietors to multi-state corporations – discover how our licensed CPAs maximize deductions and minimize tax liability for your specific entity type.
Why Choose Professional Business Tax Preparation Services?
💰 Average $15,000+ Annual Tax Savings
Our licensed CPAs uncover deductions that DIY business tax software misses. From equipment depreciation to R&D credits, we ensure your business pays the minimum tax legally required while maintaining full IRS compliance.
🏆 Specialized Business Tax Expertise
Unlike general tax preparers, our CPAs specialize exclusively in business taxation. We understand Schedule C optimization, S-Corp reasonable salary rules, partnership allocations, C-Corp double taxation strategies, and multi-state nexus requirements.
🛡️ Complete IRS Audit Protection
Full audit defense and IRS representation included with every business tax return – no extra fees. If the IRS questions your return, we handle all correspondence and represent your business throughout the audit process.
Serving businesses nationwide with local expertise:
Business tax preparation services in Washington (Seattle, Bellevue, Redmond, Sammamish, Bothell, Renton), Texas (Dallas, McKinney, Frisco), California (San Francisco, San Jose, Sunnyvale, Milpitas), and all 50 states. 100% US-based team – your business data never leaves the United States.
↑ Back to Pricing • 💼 Sole Proprietors & Freelancers
Schedule C Tax Preparation (Sole Proprietor / Single-Member LLC)
Strategic tax preparation for sole proprietors, freelancers, consultants, and single-member LLCs. We maximize deductions while ensuring IRS compliance, optimize your home office and vehicle expenses, and plan quarterly estimated payments to avoid penalties.
"I've been using TurboTax Self-Employed. Why pay a CPA?"
TurboTax charges $119-$169 and asks yes/no questions without strategic guidance. Our CPAs find an average of $5,000 more in missed deductions (home office optimization, actual vehicle expense vs mileage, business use of cell phone, professional development, client entertainment), calculate optimal quarterly payments to avoid underpayment penalties, and provide year-round support. Plus audit protection is included, not a $90 upsell.
- Schedule C preparation with audit-proof documentation and expense categorization
- Home office deduction optimization (simplified vs regular method comparison)
- Vehicle expense tracking and optimization (actual expense vs standard mileage analysis)
- Section 179 and bonus depreciation for equipment and asset purchases
- Business meals, travel, and entertainment deduction compliance (50% vs 100% rules)
- Self-employment tax calculation and estimated quarterly payment planning
- Qualified Business Income (QBI) 20% deduction maximization
- Health insurance and retirement contribution deductions (SEP-IRA, Solo 401k)
- Multi-state business income allocation for nationwide sales
- Entity structure consultation (when to convert to S-Corp)
Learn More:
↑ Back to Pricing • 🏢 S-Corporations
S-Corp Tax Preparation (Form 1120S)
Comprehensive S-Corporation tax filing with strategic payroll optimization to minimize self-employment taxes. We determine reasonable salary levels, prepare shareholder K-1s, maximize pass-through deductions, and ensure full IRS compliance for S-Corp elections.
"How much can I really save with S-Corp tax treatment?"
Real example: Client earning $150K as sole proprietor paid $21,186 in self-employment tax. After S-Corp conversion with $70K reasonable salary and $80K distribution, self-employment tax dropped to $10,710 – saving $10,476 annually. Over 5 years that’s $52,000+ in tax savings. We handle the complexity: reasonable salary determination, payroll compliance, quarterly filings, K-1 preparation, and ongoing IRS regulations.
- Form 1120S preparation with strategic income allocation and timing
- Reasonable compensation analysis and salary benchmarking for IRS compliance
- Self-employment tax savings strategies (salary vs distribution optimization)
- Schedule K-1 preparation for all shareholders with proper basis calculations
- Qualified Business Income (QBI) 20% pass-through deduction maximization
- Shareholder basis tracking and accumulated adjustments account (AAA)
- S-Corp election filing and compliance (Form 2553 if needed)
- Payroll tax reconciliation and W-2/W-3 coordination
- Multi-state S-Corp apportionment and state-specific K-1 requirements
- Built-in gains tax planning for C-Corp to S-Corp conversions
Learn More:
↑ Back to Pricing • 🤝 Partnerships & Multi-Member LLCs
Partnership Tax Filing (Form 1065)
Expert partnership and multi-member LLC tax preparation with complex allocation strategies, waterfall distributions, and multi-partner K-1 compliance. We handle guaranteed payments, self-employment tax planning, and ensure proper basis tracking for all partners.
"Our partnership agreement has complex profit splits. Can you handle this?"
Absolutely. We specialize in complex partnership allocations including: disproportionate distributions, preferred returns, waterfall allocations, special allocations under Section 704(b), guaranteed payments to partners, and tracking each partner’s capital account and basis. We’ve handled real estate syndications with 50+ partners, private equity funds with tiered waterfalls, and operating partnerships with unequal voting/profit interests.
- Form 1065 partnership return preparation with full compliance
- Complex partnership allocations (disproportionate, waterfall, preferred returns)
- Schedule K-1 preparation for all partners with detailed basis calculations
- Partner capital account tracking and Section 704(b) compliance
- Guaranteed payments and self-employment tax optimization for active partners
- Section 754 election and basis adjustment planning
- Partnership tax basis and at-risk limitation calculations
- Multi-tiered partnership structures and consolidated reporting
- Real estate partnership depreciation, cost segregation coordination
- Multi-state partnership nexus and apportionment compliance
Learn More:
↑ Back to Pricing • 🏛️ C-Corporations
C-Corporation Tax Preparation (Form 1120)
Strategic C-Corporation tax filing with advanced planning for double taxation mitigation, R&D tax credits, bonus depreciation, and corporate tax rate optimization. We handle book-to-tax reconciliation, estimated tax planning, and coordinate with your financial statements.
"We're worried about double taxation with C-Corp. Can you minimize this?"
Yes, through multiple strategies: maximize deductible compensation and bonuses to owner-employees, optimize retirement plan contributions (401k, defined benefit plans), strategically time income and deductions, leverage R&D tax credits, implement cost segregation for accelerated depreciation, consider dividend vs salary mix, and plan for qualified small business stock (QSBS) exclusion if applicable. For venture-backed startups, C-Corp structure often makes sense despite double taxation due to investor requirements and QSBS benefits.
- Form 1120 corporate tax return preparation with strategic optimization
- Book-to-tax reconciliation (Schedule M-1/M-3) for financial statement coordination
- Corporate tax rate optimization and strategic income timing
- R&D tax credit qualification, documentation, and maximization
- Bonus depreciation and Section 179 equipment deduction strategies
- Double taxation mitigation through compensation and benefit planning
- Accumulated earnings tax and personal holding company considerations
- Corporate estimated tax calculations and penalty avoidance
- Qualified Small Business Stock (QSBS) planning for startup exit strategies
- Multi-state corporate income tax and franchise tax compliance
Entity Selection Guides:
↑ Back to Pricing • 🗺️ Multi-State & International
Multi-State & International Business Tax Compliance
Expert multi-state tax compliance and international business taxation for companies operating across state lines or borders. We handle nexus analysis, income apportionment, SALT optimization, foreign entity reporting, and cross-border tax strategies.
"We have remote employees in 8 states. Do we really need to file everywhere?"
Possibly yes – and the consequences of not filing can be severe. Having a remote employee often creates nexus (tax filing obligation) in that state. We conduct nexus studies to determine exactly where you must file, handle state income/franchise tax returns, manage withholding requirements for remote employees, optimize state tax through strategic entity structuring, and defend your position if states challenge your filing positions. Penalties for non-filing can be 25% + interest, plus you lose statute of limitations protection.
- Nexus analysis and determination for all 50 states (economic, physical, sales tax)
- Multi-state income tax apportionment using throwback, Joyce, and other rules
- State and Local Tax (SALT) optimization and strategic planning
- Combined/unitary state return filing for related entities
- State tax credit research and utilization (job creation, investment, industry-specific)
- Remote employee withholding compliance and reciprocal agreement planning
- International entity reporting (Forms 5471, 5472, 8865, 8858)
- Controlled Foreign Corporation (CFC) compliance and GILTI calculations
- Transfer pricing documentation and intercompany transaction planning
- Cross-border tax treaty analysis and foreign tax credit optimization
Learn More:
Business Tax Preparation FAQ - Common Questions Answered
Get expert answers to frequently asked questions about professional business tax preparation services, business tax deductions, entity types, pricing, and what to expect when working with specialized business tax CPAs for your LLC, S-Corp, C-Corp, or partnership.
💡 What are the benefits of professional business tax filing vs DIY software?
Professional business tax filing by licensed CPAs delivers significantly better results than DIY software. Our business tax specialists identify deductions software misses (averaging $15K+ in additional savings), ensure proper business entity tax treatment, provide strategic year-round tax planning, handle complex multi-state situations, optimize entity structure, and offer audit protection with representation. DIY software asks yes/no questions without strategic guidance – our CPAs proactively find opportunities to minimize your tax burden legally.
How much does professional business tax preparation cost?
Pricing varies by entity type and revenue. Schedule C (sole proprietor): $599+, S-Corp/Partnership: $1,299+, C-Corp: $2,499+, Complex multi-state/international: $4,999+. We provide transparent upfront quotes based on your specific situation. Investment typically pays for itself 3-5X through tax savings we uncover.
What business tax documents do I need?
You’ll need: P&L statement, balance sheet, bank/credit card statements, receipts for deductible expenses, payroll reports, prior year return, depreciation schedules, K-1s received from partnerships, and any legal/formation documents. We provide a customized checklist based on your entity type.
When are business tax returns due?
S-Corps and Partnerships (Forms 1120S, 1065): March 15th. C-Corps (Form 1120): April 15th (or 4th month after fiscal year-end). Sole proprietors (Schedule C): April 15th with personal return. Extensions available – we file Form 7004 for 6-month extensions when needed.
How long does business tax preparation take?
Timeline depends on complexity: Simple Schedule C: 5-7 business days. S-Corp/Partnership: 7-10 days. C-Corp with multiple states: 10-14 days. Complex multi-entity: 14-21 days. We provide specific timeline estimates upfront and offer rush service when needed.
What happens if my business gets audited?
We provide comprehensive audit protection and representation at no extra charge (unlike software’s $90-150 upsells). If the IRS selects your return for audit, we handle all correspondence, prepare documentation, and represent you throughout the process. Your assigned CPA who prepared your return manages your audit defense.
Can you help me choose the best business entity type?
Yes, entity selection consulting is included. We analyze your situation and help you choose between Sole Proprietor, LLC, S-Corp, C-Corp, or Partnership based on revenue, growth plans, number of owners, liability concerns, and tax implications. We also handle entity conversions (LLC to S-Corp, C-Corp to S-Corp) when beneficial.
Should I convert my LLC to S-Corp status?
Generally beneficial when net profit exceeds $60K-80K due to self-employment tax savings. We analyze your specific situation considering: net income level, administrative costs, reasonable salary requirements, state taxes, and long-term plans. Average S-Corp conversion saves $8K-15K annually for qualifying businesses.
What business deductions can you help me find?
We identify all eligible deductions including: equipment purchases (Section 179, bonus depreciation), home office, vehicle expenses, business meals and travel, professional services, insurance, retirement contributions, health insurance, marketing/advertising, office supplies, software/subscriptions, professional development, and industry-specific deductions most business owners miss.
Do you handle multi-state business tax returns?
Yes, we prepare business tax returns for all 50 states. We handle nexus determination (where you must file), state income apportionment, franchise taxes, combined reporting requirements, and state-specific credits/incentives. Expertise includes remote employee compliance, sales tax nexus, and multi-state entity structuring.
Do you help with quarterly estimated tax payments?
Absolutely. We calculate required quarterly payments, provide payment vouchers or direct pay links, send reminders before each deadline (April 15, June 15, Sept 15, Jan 15), and adjust throughout the year based on actual income to avoid underpayment penalties while optimizing cash flow.
Can you help with R&D tax credits?
Yes, we identify qualifying R&D activities, document eligible expenses (wages, supplies, contract research), calculate credits, prepare IRS Form 6765, and defend positions if questioned. Many software and consulting companies qualify for substantial R&D credits ($25K-$250K+) they’re currently missing. We also coordinate cost segregation studies for real estate businesses.
Do you handle international business tax issues?
Yes, we handle: foreign-owned LLC compliance (Form 5472), controlled foreign corporations (Form 5471), foreign partnership interests (Form 8865), GILTI and Subpart F income, transfer pricing documentation, tax treaty planning, and cross-border entity structuring. Expertise serving both US companies with international operations and foreign investors in US businesses.
What's the QBI deduction and do I qualify?
Qualified Business Income deduction allows up to 20% deduction on pass-through income from S-Corps, partnerships, and sole proprietors. Phase-outs and limitations apply based on income level ($191,950 single, $383,900 married for 2024) and business type (specified service vs non-service). We maximize this deduction saving qualifying businesses $5K-$30K+ annually.
Do your CPAs specialize in business taxation?
Yes, our entire team specializes in business tax optimization with extensive experience across all entity types. Unlike general preparers or seasonal H&R Block workers, our CPAs work year-round on business tax strategy, stay current on tax law changes, and focus specifically on minimizing business tax liability while ensuring full compliance.
Will you help me after tax season ends?
Absolutely. Year-round support is included for all business clients. Contact your CPA anytime about: IRS notices, tax planning opportunities, major purchases/investments, hiring decisions, entity changes, quarterly tax questions, and business expansion plans. Many clients schedule quarterly planning calls. We don’t disappear April 16th.
Can you prepare prior year business returns?
Yes, we prepare prior year returns for any year back to 2018, handle amended returns when errors are discovered, and assist with IRS payment plans for back taxes. Critical for businesses that missed filing deadlines, discovered errors, or changed entity types. Pricing: $400-800+ per year depending on complexity.
How do I know my business data is secure?
We use bank-level 256-bit encryption, secure document portals with 2FA, strict confidentiality protocols, and SOC 2 compliance with annual security audits. Most importantly: 100% US-based team with NO outsourcing to India, Philippines, or other countries. Your sensitive business data never leaves the United States.
What if I don't have clean bookkeeping records?
We can help. We offer bookkeeping cleanup services to reconstruct your financials, categorize transactions, reconcile accounts, and prepare accurate financial statements for tax filing. Many businesses come to us with shoebox receipts or incomplete QuickBooks – we sort it out. Cleanup services start at $500 depending on volume.
Do you offer year-round tax planning?
Yes, proactive tax planning is where we deliver the most value. Quarterly planning sessions ($500/quarter or included in CFO package) cover: income/expense timing, major purchase decisions, entity optimization, retirement contributions, estimated tax adjustments, multi-year projections, and strategic opportunities. Planning prevents surprises and maximizes tax savings.
Can you handle payroll and sales tax too?
Yes, we offer full-service payroll processing ($150/month + $10/employee) and sales tax compliance ($200/state/quarter). Comprehensive packages available combining bookkeeping, payroll, sales tax, quarterly planning, and annual tax preparation – eliminating the need to coordinate multiple vendors.
Still Have Questions?
Check our Complete Business Tax FAQ Library with 100+ detailed questions, or schedule a free consultation with a licensed business CPA to discuss your specific situation.
Ready to Save $15,000+ with Professional Business Tax Preparation?
Join hundreds of businesses nationwide who trust OptimizeTax for expert CPA-led business tax filing and year-round strategic tax planning. From sole proprietors to multi-state corporations – we maximize business tax deductions, optimize entity structure, and ensure full IRS compliance while you focus on growing your business.
Trusted by businesses in Seattle, San Francisco, Dallas, and nationwide. Licensed CPAs with expertise in all 50 states.