What is Form 1120-S?
By Haresh Ratnagrahi, Founder, HiPrep (CPA, FCA, CMA (US), CISA, CRISC)
Definition
The return an S corporation files to report its income, deductions and credits. Each shareholder receives a Schedule K-1.
Where Form 1120-S matters
CPA (US): The global gold standard for accounting and audit. 4 Exams: 3 Core + 1 Discipline; 4 hrs Per section; 75 Passing score (0–99 scale); Prometric Test centres worldwide. Parts: FAR Financial Accounting & Reporting; AUD Auditing & Attestation; REG Taxation & Regulation.
CMA (US): The credential for management accounting and finance leadership. 2 Exam parts; 4 hrs Per part: 100 MCQs + 2 essays; 360 Passing score (0–500 scale); 3 yrs To complete both parts from your first. Parts: Part 1 Financial Planning, Performance and Analytics; Part 2 Strategic Financial Management.
Enrolled Agent (EA): The fastest route to practising US tax. 3 Exam parts (SEE); 3.5 hrs Per part: 100 MCQs; 105 Passing score (40–130 scale); 2 yrs To pass all three parts. Parts: Part 1 Individuals; Part 2 Businesses; Part 3 Representation, Practices and Procedures.
Related terms explained
Schedule K-1: A statement that reports each owner’s share of a pass-through entity’s income, deductions and credits.
Form 1065: The return a partnership files to report its income, deductions and credits. Each partner receives a Schedule K-1.
Guides that mention it
EA Part 2 study guide: Businesses: EA Part 2, Businesses, covers business entities, accounting methods, assets and depreciation, and specialised returns. Plan 60 to 100 hours, learn the forms for each entity, and practise basis and depreciation calculations.
How HiPrep teaches it
In HiPrep, Form 1120-S is taught concept-first and then practised in a Prometric-style simulator. Every answer is built step by step so you see how a result is reached, explanations are available in English, Hindi, Tamil, Telugu and Kannada, and a mentor is behind the platform for doubts. Start with the free diagnostic to see where Form 1120-S sits in your plan.