The 401k/403b/457/TSP contribution limit will stay the same at $19,500 in 2021 as in 2020. If you are age 50 or over, the catch-up contribution limit will also stay the same at $6,500 in 2021 as in 2020.
Employer match or profit sharing contributions aren’t included in these limits. If you work for multiple employers in the same year or if your employer offers multiple plans, you have one single limit for 401k, 403b, and TSP across all plans. The 457 plan limit is separate. You can contribute the maximum to both a 401k/403b/TSP plan and a 457 plan.
The total employer plus employee contributions to all defined contribution plans by the same employer will increase by $1,000 from $57,000 in 2020 to $58,000 in 2021. The age-50-or-over catch-up contribution is on top of this limit. If you work for multiple unrelated employers in the same year, you have separate limits at each employer.
The contribution limit for SIMPLE 401k and SIMPLE IRA plans will stay the same at $13,500 in 2021 as in 2020. If you are age 50 or over, the catch-up contribution limit will also stay the same at $3,000 in 2021 as in 2020. Employer contributions aren't included in these limits.
Traditional and Roth IRA contribution limit will stay the same at $6,000 in 2021 as in 2020. The age 50 catch-up limit is fixed by law at $1,000 in all years. The IRA contribution limit and the 401k/403b/TSP or SIMPLE contribution limit are separate. You can contribute the respective maximum to both a 401k/403b/TSP/SIMPLE plan and a traditional or Roth IRA.