Freelance & Self-Employment Calculator

The required rate has to cover more than take-home pay alone — it builds in self-employment tax (which a W2 salary doesn't carry), health insurance, your chosen retirement contribution percentage, business expenses, and an optional profit margin buffer, then divides that combined total by your annual billable hours rather than total hours worked.

Time spent on invoicing, marketing, or unpaid client calls doesn't generate revenue, so every dollar of income has to come from the hours you actually bill. If you work 40 hours a week but only 75% is billable, your rate on those billable hours has to be higher to make up for the 25% that earns nothing directly.

Social Security tax applies only up to the annual wage base across all your earnings combined, so W2 wages you already paid Social Security tax on reduce the remaining room for your self-employment income to be taxed at that rate. The calculator subtracts your entered W2 income from the wage base before applying the 12.4% Social Security rate to what's left of your self-employment earnings.

It's a reasonable approximation, not an exact match — it assumes typical employer contributions like roughly $7,000 in health insurance value and a 3.5% 401(k) match, and estimates the W2 employee's take-home using the same federal and state tax logic. Actual employer benefits packages vary significantly, so treat the comparison as directional rather than a precise dollar-for-dollar conversion.

The IRS expects self-employed taxpayers to pay income and self-employment tax as they earn it throughout the year, not in one lump sum at filing time, and underpaying can trigger penalties even if the full balance is paid by the April deadline. This calculator divides your total projected self-employment tax into four equal estimated payments aligned with the standard quarterly due dates.