A 2026 guide to Section 1202 QSBS for founders, early employees, and angel investors — eligibility tests, the new $15M cap and tiered holding periods under OBBBA, stacking with non-grantor trusts, state conformity gaps in California and Pennsylvania, and how to claim the exclusion on Form 8949.
A step-by-step walkthrough of business tax filing by entity type — Schedule C for sole props, Form 1065 for partnerships, 1120-S for S-corps, and 1120 for C-corps — with 2026 deadlines, document checklists, audit triggers, and when DIY software stops being enough.
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.
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.
An LLC has no federal tax classification of its own — it borrows the rules of a sole proprietorship, partnership, S corporation, or C corporation. This 2026 guide breaks down every regime, the actual rates that apply, the income thresholds where the S-corp election starts paying off, and the state and self-employment tax layers that determine your real effective LLC tax rate.
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 practical breakdown of Delaware's business tax obligations—franchise tax, corporate income tax, gross receipts tax, and LLC annual fees—with calculation methods, filing deadlines, and entity-by-entity comparisons for founders and business owners.
Form 8832 lets LLCs override their default IRS tax classification—single-member (disregarded entity) or multi-member (partnership)—to elect C corporation treatment at the 21% flat rate, with a 60-month lock-in and a 75-day retroactive filing window.
IRS Form 7004 grants businesses an automatic six-month filing extension—but it doesn't extend your payment deadline. Learn the 2026 deadlines by entity type, how to complete the form correctly, and the per-partner penalties that kick in when you miss the cutoff.
Delaware's franchise tax can look like a $50,000 surprise—but using the Assumed Par Value Capital Method instead of the portal's default can cut that bill to under $1,000. This guide explains both calculation methods, due dates, penalties, and how clean books make the difference.
Take control of your finances with our open-source double-entry accounting system. Start your ledger today.
© 2019 - 2026 Beancount.io
