Legal & Business Calculators

Units sold and revenue needed to cover fixed and variable costs — for any business model.

Gross, operating, and net profit margins — and markup vs margin explained.

Selling price from cost and markup percentage — or reverse-calculate your margin.

Add or strip sales tax from any price by state or custom rate.

Subtotal, tax, discounts, and total for a client invoice — with line item breakdown.

Late payment interest and penalty amount based on outstanding balance and days overdue.

Tip amount and total bill split evenly or custom per person.

Commission payout for any rate and sale amount — tiered or flat.

What to charge per hour as a freelancer or consultant — accounting for taxes and expenses.

Fixed-price project quote from hours, rate, overhead, and profit target.

Total overhead cost and overhead rate as a percentage of direct costs or revenue.

True cost to hire an employee: salary + payroll taxes + benefits + overhead.

True cost comparison — when hiring a W2 vs 1099 actually makes financial sense.

Overtime pay for hourly or salaried employees under FLSA rules.

Monthly payments, total interest, and APR on a term loan or line of credit.

Categorize and total business expenses — with deductibility flags for tax planning.

Estimated quarterly tax payments for self-employed and business owners.

SE tax, income tax, and quarterly payments for freelancers — all in one place.

Employee profit sharing distributions by formula — equal, salary-weighted, or tiered.

Monthly and annual revenue projection from growth rate, price, and volume assumptions.

Straight-line, double-declining, and MACRS depreciation schedules for any asset.

Total cost to form and maintain an LLC — filing fees, registered agent, and annual reports by state.

Corporation formation costs by state — C-corp and S-corp with ongoing compliance fees.

Tax comparison between C-corp and S-corp structures at various income levels.

Self-employment tax savings of electing S-corp vs staying a single-member LLC.

Estimate business license fees by business type, state, and city.

Annual registered agent cost by state — and whether to use a service or serve yourself.

Equity split and profit distribution for business partnerships — cap table basics.

Estimated general liability and professional liability premiums by business type and revenue.

Annual workers' comp premium by payroll, classification code, and state rate.

USPTO filing fees, attorney costs, and maintenance fees over a trademark's lifecycle.

Provisional and non-provisional patent costs — USPTO fees plus typical attorney fees.

Filing fees for civil, small claims, and federal court by jurisdiction and claim amount.

Net settlement value after attorney contingency fees, medical liens, and taxes.

Estimated child support by state guidelines — income shares or percentage-of-income model.

Spousal support estimate by marriage length, income gap, and state guidelines.

Availability signals for your business name — domain, trademark, and state entity checks.