A. If your employer's retirement plan allows, there are three types of retirement contributions you can make, here are the annual contribution limits for 2016:
Pretax 401(k) contribution + Roth 401(k) contribution: $18,000
Catch-up contribution limit: $6,000 (for participants age 50 and older)
Pretax 401(k) + Roth 401(k) + After-tax 401(k) contributions combined: $53,000