S-Corporation Election Form 2553
An LLC or corporation files IRS Form 2553 to elect taxation as an S-corporation under Subchapter S. Must be filed within 75 days of the start of the tax year (or formation). Once elected, the entity files Form 1120-S annually and issues Schedule K-1s to shareholders. The election can produce significant payroll tax savings for owners earning above ~$60,000 in net business income.
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Form 1120-S S-Corporation Income Tax Return
The annual income tax return filed by S-corporations. Reports the entity's income, deductions, and credits and computes the share allocable to each shareholder via Schedule K-1. Due March 15 (or extended to September 15 via Form 7004). The S-corporation itself generally pays no federal income tax — income flows through to shareholders.
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Form 1065 Partnership Return of Income
The annual return filed by partnerships and multi-member LLCs taxed as partnerships. Reports partnership income and allocates it to partners via Schedule K-1. Due March 15. Like Form 1120-S, the partnership pays no federal income tax — income flows through to partners.
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Schedule K-1 Partner / Shareholder Pass-Through Statement
Issued to each partner (Form 1065 K-1) or shareholder (Form 1120-S K-1) reporting their share of pass-through income, deductions, credits, and other tax items. Recipients use the K-1 to complete their personal Form 1040. K-1 timing often delays personal returns — extensions are common for K-1 recipients.
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Form 4868 Application for Automatic Extension to File
Federal extension granting an additional six months to file Form 1040 (until October 15). Must be filed by the original April 15 deadline. An extension to file is not an extension to pay — any tax owed is still due April 15 to avoid penalties and interest. NJ requires a separate Form NJ-630 for state extensions.
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Form 8846 Credit for Employer FICA on Tips
Federal credit under IRC §45B for food and beverage establishments where tipping is customary. Equals the employer's share of FICA tax paid on tipped wages above the federal minimum wage. Reduces income tax dollar-for-dollar. Restaurants that switch CPAs frequently discover the prior firm never claimed this credit — a recurring source of overpaid tax.
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Form 656 Offer in Compromise
An IRS application to settle a tax liability for less than the full amount owed, used when the taxpayer cannot pay in full and the IRS determines collectability is doubtful. Requires substantial financial disclosure (Form 433-A or 433-B). Approval rates are below 50%; preparation requires a CPA familiar with IRS collection standards.
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Form 990 Return of Organization Exempt from Income Tax
Annual return filed by 501(c)(3) and other tax-exempt organizations reporting revenue, expenses, governance, and program activities. Public document — anyone can request a copy. Smaller orgs may file Form 990-EZ or 990-N (e-postcard) based on revenue thresholds. Failure to file for 3 consecutive years results in automatic loss of tax-exempt status.
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Form 941 Employer's Quarterly Federal Tax Return
Quarterly federal employer return reporting income tax, Social Security, and Medicare taxes withheld from employee paychecks plus the employer's share. Due the last day of the month following the end of each quarter. Companion to NJ-927 for NJ employers.
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Schedule C Profit or Loss from Business (Sole Proprietorship)
Filed with Form 1040 by sole proprietors and single-member LLCs taxed as disregarded entities. Reports business income, deductions, and net profit or loss. Net profit flows to the owner's 1040 and is subject to self-employment tax via Schedule SE. The 20% QBI deduction may apply to the net profit.
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Schedule E Supplemental Income and Loss
Filed with Form 1040 to report income or loss from rental real estate, royalties, partnerships, S-corporations, estates, and trusts. Rental income on Schedule E is generally not subject to self-employment tax. K-1 income from partnerships and S-corporations also flows through Schedule E.
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Form 7004 Application for Automatic Extension to File Business Returns
The business counterpart to Form 4868. Grants an automatic six-month extension to file Forms 1120, 1120-S, 1065, and most other business returns. Must be filed by the original return due date. Extension to file does not extend the time to pay — estimated tax is still due on the original date.
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Form 8821 Tax Information Authorization
Allows a designated third party (CPA, attorney, family member) to inspect and receive IRS records for the taxpayer. Unlike Form 2848, Form 8821 does not authorize the designee to represent or speak for the taxpayer. Used when records access is needed but no representation will occur. Expires on a date the taxpayer specifies.
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Form 2848 Power of Attorney and Declaration of Representative
Authorizes a CPA, enrolled agent, or attorney to represent the taxpayer before the IRS. Required before a representative can argue an audit, negotiate a collection alternative, or sign documents on the taxpayer's behalf. Covers specific tax years and specific tax matters. The representative must hold an active license or enrollment.
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Form 706 United States Estate (and GST) Tax Return
Federal estate tax return filed by the executor when a decedent's estate exceeds the federal exemption amount. Includes adjusted lifetime gifts in the calculation. Due nine months after death, with a six-month extension available via Form 4768. The current exemption is published annually by the IRS.
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Form 709 United States Gift (and GST) Tax Return
Required when a donor gives more than the annual exclusion amount to any one recipient in a calendar year. The annual exclusion is set by IRS and adjusts for inflation. Filing does not always mean tax is owed — most gifts reduce the lifetime exemption first. Due April 15 of the year after the gift, extendable to October 15.
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Form W-2 Wage and Tax Statement
Issued by employers to each employee by January 31 reporting wages paid and federal, state, and FICA taxes withheld. Filed with the Social Security Administration, not the IRS. Employees use the W-2 to complete their Form 1040. Misclassifying a W-2 employee as a 1099 contractor triggers IRS penalties and back payroll tax.
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Form 1099-NEC Nonemployee Compensation
Issued by businesses to each independent contractor paid $600 or more in a calendar year. Filed with the IRS by January 31. Replaces the prior reporting on Form 1099-MISC Box 7 after the 2020 form split. Recipients report 1099-NEC income on Schedule C and pay self-employment tax via Schedule SE.
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Form 940 Employer's Annual Federal Unemployment (FUTA) Tax Return
Annual federal employer return reporting FUTA tax owed on the first $7,000 of each employee's wages. Filed once a year — separate from the quarterly Form 941. FUTA funds federal unemployment programs alongside state SUTA. Employers in states with full SUTA credit pay an effective FUTA rate well below the statutory 6%.
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