LLC vs Sole Proprietor Cost Calculator

LLC total cost is calculated as: state filing fee + annual LLC maintenance + annual legal/tax/admin setup. Sole proprietor cost is modeled as $0 in direct formation/maintenance (entity costs only). The tool then computes net cost impact (LLC cost − $0) and a cost burden ratio (LLC cost ÷ expected annual business profit).

The recommendation uses a simplified liability modifier (Low/Medium/High) because real LLC protection depends on insurance, contracts, operating practices, and how well you separate business and personal activities. The calculator also doesn’t model tax differences, self-employment tax, insurance premiums, attorney fees after setup, or any specific state tax treatment—so the result is best read as a cost-impact screening tool, not legal advice.

Don’t input profit as $0 if you’re unsure—when profit is zero, the cost-burden ratio is flagged as “not meaningful” to avoid dividing by zero. Also be careful not to treat liability level as a substitute for insurance and good paperwork: an LLC can’t fully replace malpractice, general liability, or contract terms. If your situation is contract-heavy or involves high-value clients/products, you should consider adding those costs separately for a more accurate picture.

If you enter $0 filing fee or $0 ongoing costs, the LLC cost impact may look trivial—however, real-world legal and compliance work may still exist. If expected annual profit is very low, the tool will likely show a high cost burden and may label the LLC as “probably unnecessary right now,” especially when liability is Low. For High liability, the recommendation logic avoids an automatic “unnecessary” verdict even if the costs look large—because the risk context matters.