Form 1040-ES – Estimated Tax for Individuals (Quarterlies).
Form 4868 – 1040 First Extension to August 15th, due by April 15th.
Form 2848 – Power of Attorney and Declaration of Representative.
Form 7004 – Extension of Time to File Corporate Income Tax Return, due 75 days after year end.
Form W-4 – Employee Withholding Allowance Certificate.
Form W-9 – Request for Taxpayer Identification Number and Certification (1099).
IRS Forms and Publications – Every Form and Publication available.