Freelance & Independent Contractor calculators

IRC § 1401(a) (12.4% OASDI rate on net SE earnings up to the SS wage base)

Federal Self-Employment Tax (Schedule SE) Calculator

Compute the federal Self-Employment Tax under IRC § 1401 — the self-employed taxpayer's combined Social Security (12.4% OASDI up to the Social Security wage base) and Medicare (2.9% on all earnings, no cap) contributions reported on Schedule SE of Form 1040. Applies the 92.35% multiplier under IRC § 1402(a)(12), enforces the $400 de minimis under IRC § 1402(b), offsets the OASDI wage base by W-2 wages from other jobs, layers the Additional Medicare Tax (0.9%) under IRC § 3101(b)(2), and surfaces the above-the-line half-SE deduction under IRC § 164(f). Statute-cited, federal-pure mechanics for any jurisdiction.

Standard retainer-pricing methodology: cost-plus floor (target monthly hours × billable hourly rate)

Freelancer Retainer Pricing Calculator

Translate a freelancer's hourly rate into a defensible monthly retainer price. Computes the cost-plus floor (target hours × hourly rate), the recommended retainer (cost-plus × (1 − retainer discount + predictability premium)), the effective hourly rate at target consumption and at the scope cap, the net discount against standard hourly billing, and the overflow billing rate above the scope cap. Industry-standard retainer-pricing methodology with the discount/premium structure that protects both freelancer and client.

IRS Form 1040-ES (Estimated Tax for Individuals) and accompanying worksheets

Freelancer Quarterly Tax Estimator Calculator

Estimate IRS Form 1040-ES quarterly tax payments for self-employed freelancers. Computes self-employment tax under 26 USC § 1401 (Social Security 12.4% on the first $168,600 plus Medicare 2.9% uncapped), the Additional Medicare Tax under § 1401(b)(2), federal income tax on net SE earnings less the half-SE-tax deduction under § 164(f) and standard deduction, state income tax, and the safe-harbor floor under § 6654 (the lesser of 90% of current-year liability or 100%/110% of prior-year tax). Surfaces quarterly installment amounts and penalty exposure.

26 USC § 162(l)(1) (deduction allowed for amounts paid for health insurance covering the taxpayer

Freelancer Health Insurance Deduction Calculator

Compute the self-employed health insurance deduction under 26 USC § 162(l). Surfaces the deductible premium amount (lesser of total premiums paid or SE net earnings under the § 162(l)(2)(A) earned-income limit), federal and state tax savings at the taxpayer's marginal rate, the savings advantage of the above-the-line § 162(l) deduction over an itemized § 213 medical-expense deduction (subject to the 7.5% AGI floor), and projected cumulative savings over 5 and 10 years.