S Corp vs C Corp: Tax Implications Explained for 2026
Quick Answer
S Corps offer pass-through taxation avoiding double taxation, while C Corps face 21% corporate tax plus dividend tax but can retain earnings tax-efficiently. For businesses distributing most profits, S Corps typically result in lower total tax burden.
Key Takeaways
- Tax Structure: S Corps pass income to owners; C Corps taxed at entity level
- Double Taxation: C Corps face corporate tax + dividend tax; S Corps avoid this
- Profit Retention: C Corps can retain profits at 21% rate; S Corps must distribute
- Owner Limits: S Corps limited to 100 shareholders; C Corps unlimited
- Investment: C Corps can attract VC funding; S Corps cannot issue preferred stock
Introduction
The S Corp vs C Corp decision primarily comes down to taxation philosophy: do you want to distribute profits to owners (S Corp) or reinvest in the company (C Corp)?
Tax Treatment Deep Dive
S Corp Taxation
S Corps are pass-through entities. Profits flow directly to shareholders’ personal tax returns via Schedule K-1.
Benefits:
- No double taxation
- 20% QBI deduction potentially available
- Losses deductible against other income
- Only salary subject to payroll taxes
Example: $200,000 S Corp profit with $80,000 salary
- Federal tax on salary: ~$9,000
- Federal tax on $120,000 distribution: ~$18,000
- Payroll tax on salary: ~$12,240
- Total: ~$39,240
C Corp Taxation
C Corps pay 21% flat federal tax. Distributions taxed again as dividends.
Benefits:
- Lower tax rate on retained earnings (21%)
- No self-employment tax on dividends
- Employee benefits fully deductible
- Preferred stock for investors
Example: $200,000 C Corp profit, all distributed
- Corporate tax (21%): $42,000
- Remaining: $158,000
- Dividend tax (15%): $23,700
- Total: $65,700
When C Corp Makes Sense
- Reinvesting Profits: Only pay 21% vs your personal rate
- VC Funding: Required structure for most investors
- IPO Plans: Public companies must be C Corps
- High Personal Tax Bracket: 21% corporate rate may be lower than your personal rate
- Employee Benefits: Medical reimbursement plans only for C Corps
When S Corp Makes Sense
- Distributing Profits: Avoid double taxation
- Service Businesses: Professional services benefit from pass-through
- Smaller Operations: Under $10M revenue
- Fewer Owners: 100 shareholder limit works
- Simpler Compliance: No board meetings required
FAQ
1. Can I switch from S Corp to C Corp?
Yes, by revoking S election. May trigger built-in gains tax on appreciated assets held during S period.
2. What’s the built-in gains tax?
When converting from C Corp to S Corp, appreciated assets may be subject to corporate-level tax if sold within 5 years.
3. Can C Corps have QBI deduction?
No, the 20% Qualified Business Income deduction only applies to pass-through entities like S Corps and LLCs.
4. Which is better for a profitable service business?
Usually S Corp, as you’ll distribute profits and avoid double taxation while saving on self-employment taxes.
5. Can I be an S Corp and C Corp employee?
As S Corp owner, you’re both employee (for salary) and shareholder (for distributions). C Corp owners can be employees too.
6. What about state taxes?
Some states don’t recognize S Corp status (e.g., Tennessee, New Hampshire) and tax S Corps like C Corps.
7. Can S Corps have foreign shareholders?
No, S Corp shareholders must be U.S. citizens or residents. C Corps can have foreign owners.
8. How are losses handled?
S Corp losses pass through to shareholders and may offset other income. C Corp losses stay at corporate level.
9. Which has more audit risk?
S Corps face scrutiny on “reasonable salary” issues. C Corps have transfer pricing and unreasonable compensation audits.
10. Can I have both S Corp and C Corp subsidiaries?
Yes, a C Corp can own S Corp subsidiaries (qualified subchapter S subsidiaries) for tax planning.
Related Articles
Try Our Calculator
Compare your specific tax situation using our LLC vs S Corp vs C Corp Tax Calculator.