- Most teachers retire with 67% of their highest 3-year average salary from the Teacher Retirement System (TRS), which for many is not enough to live on. Contributing to a 403(b) retirement plan can help avoid this income gap upon retirement. - 403(b) plans allow pre-tax contributions up to $16,500 per year for those under 50 and an additional $5,500 catch-up contribution for those over 50. There are also catch-up provisions for those with 15+ years of service. - Contributions and earnings grow tax-deferred, and can be withdrawn as retirement income subject to taxes and potential penalties if taken before age 59.5. Minimum distributions are