For 2015, the limit for elective deferrals to:
401(k)plans is $18,000
403(b) plans is $18,000
with a $6,000 catch-up contribution for those age 50 or older.
SIMPLE plans is $12,500
with a $3,000 catch-up contribution for those age 50 and older
IRA $ 5,500 (cannot exceed the lesser of $ 5,500 or compensation)
with a $1,000 catch-up contribution for those age 50 and older.
Deadline for contributions - 401(k) is 12/31 while the IRA is 4/15.
For more detailed information for to www.irs.gov. Pub 590 for IRA's, Pub 560 for Retirement plans for small business and Pub 575 Penisons & Annuity income
Retirement Savings Plans