can I contribute to both a 403b and a 401K at the same time?
Though you can contribute to both a 401(k) and a 403(b) plan, each dollar you put in a 403(b) plan reduces the amount you can contribute to a 401(k) plan.For example, as of 2012 your maximum deferral is $17,000. If you put $5,000 into your 403(b) plan, the most you can contribute to your 401(k) plan is $12,000.01(k) and 403(b) plan limits combine. Working multiple jobs has its drawbacks, but depending on your employers, it might allow you to contribute to both a 401(k) plan and a 403(b) plan in the same year.