1099 vs. S-Corp Tax Calculator:
Stop Overpaying Self-Employment Tax.

An S-Corporation election typically becomes financially advantageous once your business generates approximately $70,000 to $80,000+ in net profit (revenue minus legitimate expenses). Below this threshold, the annual overhead of running an S-Corp—including payroll processing ($500–$800/yr), separate corporate tax preparation (Form 1120-S, $800–$1,500/yr), and state franchise or filing fees ($0–$800/yr)—often offsets or exceeds the self-employment tax savings. Above $80,000 net profit, you can distribute a portion of profits as dividends exempt from the 15.3% FICA/SE tax, yielding net annual tax savings of $3,000 to $12,000+.

The IRS requires shareholder-employees of an S-Corporation who perform services to be paid "reasonable compensation" via W-2 wages before any non-wage distributions are distributed. Reasonable salary is determined by evaluating what an independent employer would pay for comparable services in your geographic region and industry. Factors include your duties, time devoted to the business, complexity of work, and industry wage data (BLS/RCReports). As a general baseline, many CPAs use a 60/40 rule (60% salary / 40% distribution) or wage benchmarking, but paying an artificially low salary (e.g., $20,000 on $200,000 profit) is a primary trigger for IRS reclassification audits.

Running an S-Corp introduces administrative responsibilities that Sole Proprietors do not have: (1) Automated W-2 payroll software such as Gusto ($45–$80/month); (2) Annual corporate tax preparation for Form 1120-S ($800–$1,800 annually); (3) State corporate taxes and minimum franchise fees (for instance, California charges a mandatory $800 annual franchise tax, and Illinois imposes a 1.5% personal property replacement tax); (4) State Unemployment Insurance (SUTA) and federal unemployment (FUTA, up to $42/yr); and (5) Formal corporate maintenance like shareholder minutes and corporate resolutions.

Under IRS rules, Form 2553 must be filed no later than 2 months and 15 days after the beginning of the tax year (typically March 15 for calendar year businesses). However, the IRS provides relief under Revenue Procedure 2013-30 for late elections up to 3 years and 75 days after the intended effective date, provided you show "reasonable cause" for the late filing and treated the entity as an S-Corp from the target date.

The Tax Cuts and Jobs Act introduced the 20% Qualified Business Income (QBI) deduction. For a Sole Proprietor, QBI applies to the entire net profit minus the deductible half of self-employment tax. For an S-Corporation, QBI only applies to pass-through profits (Schedule K-1 distributions), because W-2 salary is explicitly excluded from QBI. Consequently, electing S-Corp status reduces your QBI deduction while significantly slashing your FICA self-employment taxes. Our simulator models both effects in real time to show your true net cash-in-pocket advantage.

No. An S-Corporation is not a distinct state business entity type—it is a federal tax classification. You first create either an LLC or a C-Corporation with your state secretary of state. Then, you file Form 2553 ("Election by a Small Business Corporation") with the IRS to instruct them to tax your LLC as an S-Corporation.