An S-Corp election is a tax classification change — your Florida LLC stays an LLC with Sunbiz, but the IRS taxes your profit differently. Instead of paying self-employment tax (15.3%) on all net profit, you pay yourself a W-2 salary and take the remainder as a distribution. Distributions are not subject to FICA. Florida LLC netting $150,000 with a $70,000 salary: default LLC pays ~$21,194 SE tax; S-Corp pays ~$10,710 FICA; estimated annual savings ~$10,484. Filing: IRS Form 2553, no fee, deadline March 15 for the current tax year. Florida S-Corps do not pay the state 5.5% corporate income tax. Breakeven framework: at $40,000 net profit, FICA savings ~$2,000 vs compliance costs ~$3,500 — not worth it. At $60,000: savings ~$4,500 vs costs ~$3,500 — marginal. At $80,000: ~$6,500 savings, ~$4,000 costs, ~$2,500 net benefit. At $150,000: ~$10,500 savings, ~$4,500 costs, ~$6,000 net benefit. Annual compliance costs include payroll service ($480-$900), Form 1120-S preparation ($500-$1,500), and Florida Sunbiz annual report ($138.75). S-Corp does NOT make sense when profit is under $50,000, in the first year of business, or when planning to raise outside capital. Reasonable compensation: the IRS requires a salary comparable to what similar businesses pay for the same work. For solo service providers, salary typically represents 60-80% of net profit as a starting point. Getting it wrong can result in retroactive reclassification of distributions as wages, back taxes, penalties, and interest. Retirement benefit: S-Corp W-2 salary enables SEP IRA contributions (up to 25% of W-2 compensation, 2025 max $70,000) or Solo 401(k) contributions ($23,500 employee deferral plus 25% employer match), stacking tax savings on top of FICA savings. Late election relief: if the March 15 deadline is missed, Rev. Proc. 2013-30 allows late filing within 3 years and 75 days of the intended effective date. Estimated annual S-Corp benefit by net profit (reasonable salary typically 60-80% of profit as a starting point; compliance costs — payroll service, Form 1120-S preparation, documentation — typically $3,000–$5,000/yr) Net profit Est. FICA savings Est. compliance cost Net annual benefit $40,000 ~$2,000 ~$3,500 -$1,500 (not worth it) $60,000 ~$4,500 ~$3,500 ~$1,000 (marginal) $80,000 ~$6,500 ~$4,000 ~$2,500 $120,000 ~$9,000 ~$4,000 ~$5,000 $150,000 ~$10,500 ~$4,500 ~$6,000 $200,000+ ~$12,000+ ~$5,000 $7,000+ These are planning estimates, not quotes — the real answer depends on your reasonable-compensation figure, other W-2 wages, and state of residence. Run your own numbers in my free S-Corp calculator at timcpa.com/tax-calculators, or book a free 15-minute consultation.