Study Income-tax Law and GST as two parallel sections of one Paper 3 plan—not as subjects that must be completed in a universally correct order. Keep a separate chapter checklist for each section, follow ICAI’s prescribed sequence inside each checklist, and schedule recurring concept and question-practice blocks for both. Increase time for the section in which your practice results are weaker.
There is no ICAI-mandated rule that GST must come before Income Tax, or the reverse, and the available official guidance does not establish a universal daily-hour target or time split. Your attempt date, applicable statutory updates and performance on questions should determine the balance.
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What Paper 3 contains
CA Intermediate Paper 3, Taxation, has two distinct parts:
| Section | Subject | How to track it |
|---|---|---|
| Section A | Income-tax Law | Separate chapter checklist, provision notes, solved questions and update check |
| Section B | Goods and Services Tax (GST) | Separate chapter checklist, provision notes, solved questions and update check |
The syllabus presents separate chapter structures even though both appear in one paper. Treating them as one undifferentiated list makes it easy to finish one section while neglecting the other. A two-checklist system gives you a visible answer to four questions for each section: have I covered the chapters, understood the provisions, practised application and checked the material for my attempt?
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ICAI’s preparation guidance says students should follow the prescribed chapter sequence because it is designed to support learning of substantive and procedural law. Apply that instruction within Income-tax Law and within GST; do not rearrange chapters simply because a different order appears convenient.
Should you study GST or Income Tax first?
Neither section has a universally correct first position. The official material establishes the two-section structure and a prescribed sequence within the study material, but not a compulsory order between Section A and Section B. Start with the section that fits your immediate circumstances, then bring the other into the same weekly cycle rather than postponing it until the first is “finished.”
A practical starting decision
- If one section is completely new: give it the first concept block of the week, while retaining a question-practice block for the other section.
- If one section has a near-complete first reading: keep revising and solving its questions while beginning the untouched section.
- If practice marks are uneven: allocate the next available block to the weaker section and reassess after another set of chapter questions.
- If both are unfamiliar: begin with the first chapters in each section’s applicable ICAI material during the same week. This avoids creating a long gap before the second section.
These are planning choices, not ICAI rules. The important constraint is continuity: neither checklist should disappear while you work through the other.
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Build the plan from the correct attempt syllabus
Before assigning weeks, identify the examination attempt and download the matching ICAI course page and study material. Applicable law and chapter coverage are cycle-specific, so an old checklist can leave you studying provisions that do not belong to your paper or missing a current change.
Current attempt examples
For the May 2026, September 2026 and January 2027 GST syllabus, ICAI lists these areas:
- Introduction to GST
- Supply
- Charge of GST
- Place of supply
- Exemptions
- Time of supply
- Value of supply
- Input tax credit
- Registration
- Invoices and credit/debit notes
- Accounts and records
- E-way bill
- Payment
- Tax deduction and collection at source
- Returns
ICAI’s course listings also provide separate Income-tax Law and GST chapter structures for the May 2027, September 2027 and January 2028 examinations. Do not carry a 2026 list into a 2027–28 attempt without checking the current listing and material.
Write the applicable chapter lists
- Record your attempt month and year at the top of a planning sheet.
- Copy the Income-tax Law chapter names from the study material for that attempt into a Section A checklist.
- Copy the GST chapter names from the same attempt into a Section B checklist.
- Add columns for first reading, questions attempted, errors reviewed and statutory update checked.
- Reserve weeks for revision and full-paper practice before distributing chapters across the remaining weeks.
The number of weeks and daily hours is a personal planning variable. No official source establishes a universal benchmark. Use your available calendar and the time required to reach reliable question performance instead.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchUse ICAI’s repeatable routine for every chapter
Follow the same five-part routine in both sections. The first four stages reflect ICAI’s published preparation guidance; the final mistake-log stage is a practical way to turn errors into a revision list.
1. Read the learning outcomes and overview
Start by identifying the chapter’s scope. Write down the terms, processes, computations or compliance steps the chapter expects you to handle. This prevents passive reading and gives you a checklist for the questions that follow.
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2. Study the statutory provisions
Read the applicable provision in the ICAI study material, including conditions, definitions, exceptions, dates and procedural requirements. In tax subjects, a familiar-looking rule can change its result when one condition or threshold changes, so mark those qualifiers in your notes rather than reducing a provision to a one-line slogan.
3. Read the accompanying analysis
Use the explanation and illustrations after the provision to see how the rule is applied. Keep a separate note for the reasoning that connects facts to the provision. For GST, this may mean distinguishing the relevant transaction concept before working through tax treatment; for Income-tax Law, it may mean identifying the applicable rule before attempting a computation. Do not substitute your own remembered sequence for the sequence in the current material.
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4. Review the summary or recap
After the detailed reading, return to the chapter summary. Treat it as a compression check: can you explain each item without reopening the full chapter? Flag any item that still requires a page reference or worked example.
5. Attempt the chapter questions and log errors
Solve the chapter questions without looking at the answer first. Classify each error as a rule-recall error, an issue-identification error, a calculation or presentation error, or an update-related error. Record the provision or step you missed and schedule that entry for revision. A mistake list is a planning tool, not a replacement for re-reading the underlying rule.
How to combine both sections in a weekly plan
Use recurring blocks rather than completing one section and hoping to remember the other later. A simple pattern is to alternate a concept block in one section with a question-practice block in the other, then use the next cycle to address the weaker error list.
Example weekly cycle
| Block | Primary activity | Output to record |
|---|---|---|
| Block 1 | New Income-tax Law chapter in prescribed order | Provision notes and chapter status |
| Block 2 | GST questions from an already studied chapter | Questions attempted and error categories |
| Block 3 | New GST chapter in prescribed order | Provision notes and chapter status |
| Block 4 | Income-tax Law questions and error correction | Corrected solutions and unresolved points |
| Block 5 | Short revision of both sections | Items requiring the next week’s attention |
This is an adaptable example, not an official timetable or equal time requirement. If GST questions expose more gaps, give GST additional practice blocks; if Income-tax Law errors persist, shift the next concept block toward that section while keeping at least one maintenance block for GST.
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For each chapter, mark four separate outcomes:
- Covered: you completed the chapter reading in the applicable material.
- Understood: you can explain the governing provisions and their conditions.
- Applied: you attempted questions and can reproduce a correct method.
- Updated: you checked the material applicable to your attempt.
Hours alone cannot show whether a chapter is exam-ready. A chapter with extensive highlighting but no solved questions should remain open in your checklist.
Compare readiness across the two sections
Use the same four comparison axes for Income-tax Law and GST, while keeping their chapter lists separate. This makes your allocation decision evidence-based instead of driven by which book happens to be open.
| Axis | Income-tax Law check | GST check |
|---|---|---|
| Sequence and coverage | Are the applicable chapters completed in ICAI’s order? | Are the applicable chapters completed in ICAI’s order? |
| Provision understanding | Can you state the rule, conditions and exceptions? | Can you state the rule, conditions and exceptions? |
| Application | Can you identify the issue and produce a correct solution? | Can you identify the issue and produce a correct solution? |
| Attempt update | Has the relevant statutory update been checked? | Has the relevant statutory update been checked? |
Review this dashboard after each meaningful question set. A section that has more chapters read but more unresolved application errors may need the next practice block. Conversely, a section with reliable answers can receive a shorter maintenance block while you repair the weaker section.
Plan revision around practice errors
Do not leave revision as one final reading. Use the error list created during chapter practice to decide what returns to the schedule.
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After completing a group of chapters in either section, revisit only the provisions and question types connected to recorded errors. Re-solve the question without the answer visible, then compare your method with the solution. Mark the error closed only when you can explain why the corrected approach works.
Second revision: mix chapters within a section
Once several chapters are complete, combine questions from those chapters. Mixed practice tests whether you can identify the relevant provision rather than relying on the chapter title as a clue. Keep Income-tax Law and GST checklists separate while mixing questions within each section.
Final revision: test the whole paper
Use the applicable model test paper and other official exam-style material to practise switching between Section A and Section B. Review errors by section after the test, then schedule targeted corrections. A full-paper attempt should be planned before the examination, not treated as a last-minute experiment.
Keep statutory updates tied to the attempt
For each section, check the statutory update issued for your examination attempt and record its completion separately from ordinary chapter reading. The same subject can have different applicable updates across attempts, so a note prepared for one session should not be assumed valid for another.
For the May 2026, September 2026 and January 2027 examples, begin with the current ICAI listing for the selected attempt. If you are targeting May 2027, September 2027 or January 2028, use the corresponding course page and study material rather than relying on an earlier GST or Income-tax Law chapter list.
Which official materials to use
Use the ICAI study material for your target attempt as the syllabus backbone. Then check the matching official practice resources:
- Study material: establishes the chapter sequence and explanations for each section.
- Revision Test Paper (RTP): provides attempt-specific revision and question practice.
- Statutory update: identifies changes applicable to the attempt.
- Paper 3 model test paper: supplies whole-paper, exam-style practice.
ICAI’s January 2026 Board of Studies announcement lists study material, RTP and statutory updates separately for Income-tax Law and GST, while the Intermediate course page lists Paper 3 model papers. Check the exact version and attempt label on each resource before using it.
The official material establishes resource types; it does not establish a requirement to buy a third-party book, planner, course, app or other product. Add supplementary material only if it solves a specific problem in your practice, and keep the applicable ICAI material as the reference point.
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Cost and resource choices
Your core plan can be built around the applicable ICAI study material, RTP, statutory update and Paper 3 model paper. The official sources do not specify a mandatory paid book, coaching course, planner, app or stationery purchase. Therefore, do not treat a purchase as a prerequisite for starting either section.
If you use an additional explanation source, assign it a narrow job: clarify a provision you repeatedly miss, provide extra questions for a weak area, or help you review an error. Keep one clearly identified ICAI version as the reference point so that multiple notes do not create conflicting chapter sequences or update dates. Record the attempt label and version for every file or book you use.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Troubleshoot common planning failures
“I finished GST, but Income Tax has not started.”
Keep GST in a maintenance cycle of mixed questions while beginning Income-tax Law from the first applicable chapter. Do not restart GST from page one unless your error review shows a genuine foundation gap.
“I read both sections but cannot solve questions.”
Reduce new reading temporarily and run the chapter routine again: identify the provision, write its conditions, attempt a question, classify the error and re-solve it. Your checklist should not mark a chapter complete on reading alone.
“My notes are too long to revise.”
Use the chapter summary as the compression test. Keep detailed explanation only where it resolves an error or clarifies a condition; retain page references for rules you still need to revisit.
“I am using an old chapter list.”
Stop assigning new study weeks until you compare the list with the ICAI page and study material for your attempt. Replace the checklist, then map any completed work onto the current structure.
“One section takes all my available time.”
Use practice results to justify the imbalance, but retain a recurring block for the other section. The purpose of the second block is continuity; it can be shorter until the weaker section stabilises.
“I keep changing the order because another source recommends it.”
Return to the sequence in the applicable ICAI study material. The published guidance specifically treats that sequence as a support for learning substantive and procedural law. Use another source for explanation or practice only after the chapter’s position and attempt applicability are clear.
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“I completed questions but did not review them.”
Keep the question column and the error-review column separate. An attempted question is evidence of practice; it is not evidence that the underlying rule is secure. Re-solve incorrect or uncertain questions and record the provision, condition or step that caused the error.
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A final readiness check
Before the final revision phase, verify each item below for both Section A and Section B:
- The chapter list matches the intended attempt.
- Every chapter follows the sequence in the applicable ICAI material.
- Learning outcomes and overviews were reviewed.
- Statutory provisions and analysis were studied.
- Chapter summaries were used to identify unresolved points.
- Chapter questions were attempted, not merely read.
- Mistakes are classified and re-solved.
- The attempt-specific statutory update was checked.
- RTP questions were practised.
- At least one Paper 3 model test paper was attempted under exam-like conditions.
- Whole-paper practice includes switching between Income-tax Law and GST.
Use the checklist to decide what to study next. A completed reading column with an empty questions column is a clear signal to practise before adding more chapters.
Frequently Asked Questions
Should I study GST or Income Tax first for CA Inter?
There is no official compulsory order between Section A and Section B. Start with the section that fits your current preparation, but place the other section in the same weekly cycle. Follow ICAI’s prescribed chapter sequence within each section.
How much time should I give Income Tax and GST each day?
ICAI does not prescribe a universal daily-hour target or fixed split in the cited guidance. Allocate time according to your available calendar, chapter workload and performance on practice questions, while keeping recurring blocks for both sections.
Can I finish GST completely before starting Income-tax Law?
You can begin with GST, but postponing the other section until GST is entirely finished creates a continuity risk. Continue at least a maintenance or question-practice block for Income-tax Law, then rebalance using your error list.
Which GST chapters apply to the May 2026, September 2026 and January 2027 attempts?
The listed areas are GST introduction, supply, charge, place of supply, exemptions, time of supply, value of supply, input tax credit, registration, invoices and credit/debit notes, accounts and records, e-way bill, payment, tax deduction and collection at source, and returns. Confirm the current ICAI material for your exact attempt.
Do I need to buy a coaching course or third-party book?
No mandatory purchase is established. Use the applicable ICAI study material, RTP, statutory update and Paper 3 model paper as the core resources. Add another source only for a specific explanation or practice need.
How do I know a chapter is actually complete?
Mark it complete only after reading the applicable material in sequence, understanding the provisions and conditions, attempting chapter questions, reviewing mistakes and checking the attempt-specific update. Reading or highlighting alone is not enough.
The Bottom Line
Plan Paper 3 as two connected but separately tracked sections. Use the current ICAI chapter lists, follow the prescribed sequence, study provisions and analysis, practise questions, review errors and verify updates for your attempt. There is no universal GST-first or Income-Tax-first rule; the best allocation is the one your practice evidence supports while keeping both sections active.
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