RSVP Volunteers prepare income taxes for low-income and elderly populations using TaxSlayer computer software. This program is important because everyone is required to pay taxes, people can't afford to pay a professional tax preparer, and tax laws are complicated, confusing, and ever-changing. Time Commitment: you pick the time for the (9 am-4 pm) 2-3 days a week February- Mid-April, plus testing in January Requirements: Passing IRS certified, be able to communicate well and complete mathematics.