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CA Intermediate · Taxation

Registration under GST: CA Intermediate Taxation Section B

GST registration is the process by which a supplier gets a GSTIN and becomes a registered person under the CGST Act, 2017. To solve questions, first test whether turnover crosses the threshold. If it does not, check whether any compulsory category applies. Then apply the procedure, timelines and cancellation rules to the facts given.

What this chapter covers

This chapter answers one question: who must take a GST registration, when, and how does it end? It covers the turnover threshold, the cases where registration is compulsory even with no threshold, the special registrations (casual taxable person, non-resident taxable person, Input Service Distributor, and TDS/TCS deductors), the procedure and timelines, and finally amendment, cancellation and revocation.

The chapter sits early in GST, after you know what supply is and before you study levy, input tax credit and returns. A registered person is the one who charges tax, claims credit and files returns. If you get registration wrong, the later chapters have no taxpayer to apply to.

Questions are mostly application-based. You get a small fact pattern, such as a service provider making inter-State supplies or a supplier with turnover near the limit, and you must decide if registration is needed and by when. The chapter also feeds the 30 marks of MCQs, because many rules here are single facts: a number of days, a limit, or a category.

Registration is a compact chapter with clear rules, which makes it a reliable source of marks in both MCQs and short written answers. Most questions can be settled by one rule from the Act, so you can score full marks if you know the exact conditions. The chapter is also built on numbers (thresholds, days, validity periods) and categories. These are easy to revise and easy to lose marks on if you mix them up. Careful study here gives you quick, low-risk marks and a base for the later GST chapters.

Registration: topics in the order to study them

  1. 1Persons Liable for Registration and Threshold LimitsThis is the base rule. You must know who is liable, how aggregate turnover is computed (PAN-based, all supplies), and the threshold before any exception makes sense.
  2. 2Compulsory Registration in Certain CasesThese are the exceptions to the threshold rule. They are easier to learn once you know the normal rule they override.
  3. 3Special Registrations: Casual, Non-Resident, ISD, TDS/TCSThese are specific categories with their own conditions, such as advance deposit and validity period. Study them after the general cases so you can see what is different about each.
  4. 4Registration Procedure, Deemed Registration and TimelinesNow that you know who must register, learn how and within what time. This topic is mostly dates and days, so it is best learned after the concepts.
  5. 5Amendment, Cancellation and Revocation of RegistrationThis covers the life cycle after registration. It closes the chapter and ties back to who can apply, the grounds, and the time limits.

How to prepare Registration

Treat this chapter as a decision flow plus a list of numbers. Build the flow first, then memorise the numbers, then practise on facts.

  1. Read the section on persons liable for registration and write the threshold limits on one page: goods, services, and the lower limits for special category States. Check the exact limits in your current study material.
  2. Learn how aggregate turnover is computed: PAN-based, all supplies including exempt supplies and exports, excluding taxes and inward supplies on reverse charge.
  3. Make a one-page list of compulsory registration categories and pair each with a one-line example. Note that these apply regardless of turnover, subject to any exemption notified for a category (for example, for inter-State supplies).
  4. For casual taxable person and non-resident taxable person, write down the registration timing, the validity period and extension, and the advance deposit. Do the same for ISD and TDS/TCS in a short line each.
  5. Build a timeline table for the procedure: time to apply, time for the officer to act, and when deemed registration applies. Then do the same for amendment, cancellation and revocation.
  6. Solve past questions and ICAI practice questions in this format: state the rule, apply it to the facts, give the conclusion. Do 15 to 20 MCQs on thresholds and timelines in one sitting.
  7. On the last revision, cover the list and recall each number and category from memory. Re-read only what you missed.

Common mistakes in Registration

  • Applying the threshold to categories where registration is compulsory.

    Fix: Check the compulsory categories first. If one applies, registration is required regardless of turnover, unless a notified exemption covers the case. Only then test the threshold.

  • Computing aggregate turnover wrongly by leaving out exempt supplies or exports, or by including GST.

    Fix: Remember that it includes taxable, exempt and export supplies and excludes taxes and inward supplies on reverse charge. Compute it at PAN level, not branch level.

  • Mixing up the 30-day and 5-day timelines.

    Fix: Link 30 days to ordinary persons and 5 days to casual and non-resident taxable persons, who register before they start.

  • Forgetting the advance deposit and validity limit for casual and non-resident taxable persons.

    Fix: Write these two conditions beside each category in your notes, and test yourself on them in every revision.

  • Confusing cancellation with revocation, and ignoring the revocation time limit.

    Fix: Cancellation ends the registration. Revocation reverses a cancellation ordered by the officer and must be applied for within 30 days from the date of service of the cancellation order.

  • Writing answers without stating the provision and the conclusion.

    Fix: Use a three-line format: the rule, the facts applied to it, and a clear conclusion such as 'registration is compulsory'. This earns step marks even if one detail is wrong.

Last-day revision: Registration

  • Registration is under the CGST Act, 2017, and is PAN-based but State-wise: one registration per State for each PAN, unless an exception applies.
  • Aggregate turnover covers all supplies under the same PAN, including exempt supplies, exports and inter-State supplies. It excludes taxes and inward supplies on reverse charge.
  • Registration is required once aggregate turnover exceeds the threshold. Learn the limits for goods and services, and the lower limits for special category States.
  • An ordinary person must apply within 30 days from the date on which they become liable to registration. Casual and non-resident taxable persons must apply at least 5 days before starting business.
  • Compulsory categories (no threshold) include persons making inter-State supplies, casual taxable persons, non-resident taxable persons, reverse charge payers, ISD, persons required to deduct tax at source under Section 51, e-commerce operators who are required to collect tax under Section 52, suppliers who supply through such e-commerce operators, and persons outside India supplying online information and database access or retrieval (OIDAR) services to a non-taxable online recipient. Some of these are subject to notified exemptions. Inter-State supply of goods requires compulsory registration under Section 24, with only narrow notified exceptions, such as specified handicraft suppliers below the notified limit. The threshold does not otherwise help here. Inter-State supply of taxable services by a person whose aggregate turnover is up to the threshold is exempted from compulsory registration by notification. A person making only supplies on which the entire tax is payable by the recipient under reverse charge is also exempted from registration by notification. Registration for inward reverse charge supplies under Section 9(4) applies only in specified notified cases. Certain small suppliers of specified goods through e-commerce operators are exempted by notification too. Check the current notifications.
  • The registration of a casual or non-resident taxable person is valid for the period specified in the application or 90 days from the effective date, whichever is earlier. The proper officer may extend it by a further period not exceeding 90 days, on an application filed before the registration expires.
  • Casual and non-resident taxable persons must make an advance deposit of estimated tax liability before registration is granted.
  • Voluntary registration is allowed even below the threshold. Once registered, all the obligations of a registered person apply.
  • Amendment of core fields needs the officer's approval. Core fields include the legal name of the business, the principal and additional places of business, and, for example, partners or directors. Non-core changes are approved automatically. A change of State is not an amendment. Registration is State-wise, so you need a fresh registration in the new State.
  • Cancellation can be applied for by the taxpayer or ordered by the officer on specified grounds.
  • Revocation must be applied for within 30 days from the date of service of the cancellation order, not the date of the order. The officer can reject it only through a reasoned order.

Registration practice questions

Registration in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Registration: frequently asked questions

Is GST registration compulsory for everyone?

No. A person is liable only if aggregate turnover crosses the threshold or if they fall in a compulsory category. Some persons, such as those making only wholly exempt supplies, are not liable. Others may register voluntarily.

How is aggregate turnover calculated for registration?

You add all supplies made under the same PAN across India: taxable, exempt, exports and inter-State supplies. You exclude GST and inward supplies on reverse charge. The result is compared with the threshold.

How many MCQs can I expect from this chapter?

ICAI does not fix the number of MCQs per paper or chapter. Registration is well suited to MCQs because it has clear limits, timelines and categories. Prepare it as a likely source of quick marks.

What is the difference between cancellation and revocation of registration?

Cancellation ends a registration, either on the taxpayer's application or by the officer's order. Revocation is an application to reverse a cancellation made by the officer. It must be made within 30 days from the date of service of the cancellation order.

Do I need to learn section numbers for this chapter?

Learn the main ones, such as the sections on persons liable, compulsory registration, procedure, amendment, cancellation and revocation. Marks mostly go to applying the rule correctly, so give priority to the rule and its conditions.