#tax-compliance
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The IRS uses a nine-factor test under Section 183 to decide whether your side income is a business or a hobby. After the OBBBA took effect in 2026, hobbyists report income in full but can deduct no expenses against it — making the classification more consequential than ever.
A working guide to IRS Form 1065 for multi-member LLCs and partnerships—what the information return reports, who must file, the March 16, 2026 deadline, the $260-per-partner monthly late penalty, and the bookkeeping habits that prevent K-1 errors.
Form 1120-W was retired after 2022, but C corporations expecting to owe more than $500 in federal tax must still make quarterly estimated payments. This guide covers the 2026 due dates, the 21% rate calculation, the two safe harbors, the $1 million large-corporation trap, the annualized income installment method, and the EFTPS-only payment requirement.
Form 1120-S is the annual federal return every active S corporation must file, with a 2026 deadline of March 16. This guide covers who must file, the schedules involved, the five mistakes that cost owners the most, and a month-by-month filing workflow.
Form W-9 collects your taxpayer ID so payers can issue accurate 1099s. The 2026 OBBBA raised the reporting threshold from $600 to $2,000, and the IRS released a revised form. This guide explains the line-by-line mechanics, the single-member LLC mistake that triggers backup withholding, and the recordkeeping habits that keep January boring.
Six IRS-approved paths to clear back taxes — short-term plans, 72-month installment agreements, penalty abatement, Offer in Compromise, and Currently Not Collectible status — with eligibility, fees, and when to use each.
Form 1099-MISC reports rent, royalties, prizes, and attorney settlements. Under the One Big Beautiful Bill Act, the 2026 reporting threshold jumps from $600 to $2,000. This guide breaks down which box to use, the filing calendar, and the penalty tiers that turn small mistakes into thousands of dollars.
Form 433-D authorizes a Direct Debit Installment Agreement (DDIA) with the IRS — $31 setup online with direct debit versus $130 without, automatic monthly payments, and a reduced 0.25% failure-to-pay penalty. A walkthrough of who needs the form, how to complete each section, and how it differs from Forms 9465, 433-A, and 433-F.
A 2026 guide to the six most common IRS penalties—their rates, calculations, and the three relief paths that can reduce or remove them, including the newly automatic First-Time Abatement.
A four-member LLC that files Form 1065 six months late owes about $6,240 in federal penalties before any state assessment. This 2026 guide details every federal and state penalty an LLC can face for non-filing, the cascade of secondary consequences, and the step-by-step path back to good standing — including how First-Time Abate can wipe out the entire federal penalty in a single phone call.
A 2026 calendar of LLC tax deadlines by IRS classification — single-member LLCs file Schedule C on April 15, multi-member partnerships and S-corps file Forms 1065 and 1120-S on March 16, C-corps file Form 1120 on April 15. Covers Form 7004 extensions, quarterly estimates, and the $245-per-partner late-filing penalty.
A practical breakdown of every IRS option for resolving tax debt in 2026—short-term plans, installment agreements up to 72 months, Offers in Compromise (accepted on roughly 30%–40% of applications), Currently Not Collectible status, and bankruptcy—plus how clean bookkeeping cuts the assessed bill before negotiation begins.
