It depends entirely on your hourly rate and weekly hours. At $18/hour working 20 hours per week for 52 weeks, you'd earn $18,720 per year before taxes. This calculator lets you adjust all three variables to see exactly how different schedules and rates affect your annual income.

There's no universal legal definition, but most employers consider fewer than 35 hours per week to be part-time. The Affordable Care Act defines full-time as 30 or more hours per week for benefits eligibility purposes. Common part-time schedules range from 10 to 25 hours per week depending on the employer and industry.

It varies significantly by employer. Some companies offer prorated benefits to part-time employees working a minimum number of hours, while others reserve benefits for full-time staff only. Under the ACA, employers with 50+ employees must offer health coverage to those working 30+ hours per week. Always ask about benefits eligibility when accepting a part-time position.