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IRS W-4
Nanny Calculator
State VA-4
DC D-4
Social Security Online
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Social Security Online Calculator (WEP)
Online Application-Form SS-4 (Application for EIN)
Form 2553 (Election to become an S-Corp)
Form 2553 Instructions
Self-Employed Individual Tax Center
Form 1040-ES
Electronic Federal Tax Payment System (EFTPS)
Retirement Plans for Self-Employed
IRS W-9