Form 1120 is the annual U.S. Corporation Income Tax Return every domestic C corporation must file, even in zero-income years. A 2026 walkthrough of deadlines, schedules C through M-2, estimated tax rules, and the eight most common filing mistakes.
A step-by-step checklist for setting up payroll taxes when you hire a remote employee in a new state — SUTA, income tax withholding, workers' comp, local taxes, reciprocity forms, and the convenience-of-the-employer rule.
A tax extension buys six months to file, not to pay. This guide explains exactly how to file Form 4868 (individuals) and Form 7004 (businesses), how to estimate a good-faith payment, and the state-level traps that cost filers real money.
A directory of IRS phone numbers organized by category—individual taxpayers, businesses, refunds, identity theft, liens, transcripts—with best times to call and tactics for avoiding queue transfers.
A Substitute for Return is a 1040 the IRS files for non-filers using only third-party income data—no deductions, credits, or cost basis. This guide walks through the CP59, CP2566, and 90-day CP3219N sequence and the exact steps to replace an SFR with an accurate original return.
Every IRS payment plan in one place — short-term under 180 days, long-term installment agreements up to 72 months, Guaranteed Installment Agreements, and Partial Payment Installment Agreements — with 2026 setup fees, interest math, qualification thresholds, and the three mistakes that quietly cost taxpayers the most money.
The IRS accepts roughly 36% of Offer in Compromise applications. This guide explains qualification rules, how to calculate Reasonable Collection Potential, the Form 656 and 433-A workflow, and the mistakes that cause two-thirds of offers to be rejected.
Calendar-year partnerships must file Form 1065 and issue Schedule K-1s by March 16, 2026. Late filing costs $255 per partner per month, up to 12 months. This guide covers every federal deadline, Form 7004 extensions, quarterly estimates, and the Rev. Proc. 84-35 safe harbor for small partnerships.
The IRS applies a two-part test to personal appearance expenses: the item must be required by your work and unsuitable for everyday use. Most suits, makeup, haircuts, and gym memberships fail. This guide details what qualifies, with case law including Pevsner v. Commissioner and Hamper v. Commissioner.
The 2026 SALT cap rises to $40,400, restoring the property tax deduction for many homeowners in high-tax states. Here are the new rules, the MAGI phaseout starting at $505,000, the income-based deductions, and the bunching, recordkeeping, and rental-property strategies that maximize the benefit.
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