401K Calculators is nothing but a calculation used to determine the ability of an individual or employer/company with regards to his/its contributions towards 401k plan. For this purpose participants have been divided in three different categories.

1) Sole proprietorship: One must furnish the following information for determining maximum amount he can contribute towards 401k plan as a sole proprietor

Name of the owner
Estimated net profit during the year
Date of birth of business owner (for example if the you are calculating for the year 2006 mention whether you were born before Dec 31, 1956).
Partnership: Following information is required to determine the maximum contribution of each partner towards 401k plan.
Names of partners
Estimated net profit during the year
In above cases it is assumed that the individual (sole proprietor/partner) has no other source of income.

2)Corporation: A business owner must furnish the following information to determine his maximum individual 401k contributions for that particular year in comparison to other retirement plans

Name of the owner
Estimated wages for that year (W-2 wages)

Whether the owner was born in or before 1956.

Following is the list of some reputed 401K Providers

Fidelity Funds
Lynch Merrill
NC prudentialHarbor safe
Citi Street investments
ADP Retirement Services
Vanguard
Hartford 401k services
American Insurance Group-Sun America Funds
AIM Funds
Benefit Stre
Enterprise Funds
Metavante Retirement Plan Service
North Track Funds
Great west Funds
Pioneer Funds
Scudder Investments
Pension Administration and Trust Accounting
Piper Jaffrey
PSA Financial
Qualified Pension Services
Resource Benefits Administrator
RMGI Financ
The Guardian Insurance & Annuity Company
Entrust New Direction IRA
The online 401K
Guardian Investor Services

The goal of www.401kplanshelp.com is to provide you all the information you need to maximize your tax savings because it really makes a big difference to your post retirement plans.