What GST registration actually asks you for

Working out whether you need to register for GST is one question. Actually filing the registration is a different one, and it trips up freelancers who assumed the hard part was already behind them. The form itself is not complicated. Missing what it wants, or missing the clock once an officer asks a question, is what turns a routine filing into a month of waiting.

The form has two parts, and only the second one wants documents

FORM GST REG-01 splits into Part A and Part B. Part A takes your PAN, mobile number and email, and generates a Temporary Reference Number. Part B is where the actual application happens: business details, promoter details, bank account information, and document uploads, all filed against that TRN. Nothing in Part A needs a document. Everything that does comes in Part B.

What you actually upload, by entity type

• Sole proprietor: your own PAN and Aadhaar, a passport photo, address proof for the place of business, and bank proof such as a cancelled cheque or a bank statement.
• Private Limited Company: the company's PAN, Certificate of Incorporation, a board resolution authorising the signatory, PAN and Aadhaar for every director, registered-office address proof, and bank proof. The filing must be signed with a Digital Signature Certificate, unlike a proprietorship, which can use electronic verification instead.
• LLP: the LLP's PAN and LLP Agreement, Certificate of Incorporation, PAN and Aadhaar for the designated partners, business address proof, bank proof, and a DSC from at least one designated partner.

Aadhaar authentication decides how long this takes

Complete Aadhaar authentication as part of the application and the standard approval window is seven working days from when the Application Reference Number is generated. Skip it, and the application goes to manual physical verification instead, which can run to thirty days. If the officer neither raises a query nor issues the certificate inside the mandated window, the registration is deemed approved automatically. There is rarely a reason to skip Aadhaar authentication if you want the shorter clock.

The ARN tracks your application, and it is not your registration

The Application Reference Number generates the moment you submit Part B. It is not the GSTIN and it does not mean you are registered. It is the reference every subsequent step, including any officer query, attaches to, and the anchor the approval clock runs from.

If the officer isn't satisfied

A deficient or unclear application draws FORM GST REG-03, the officer's query notice. You then have seven working days from the date it is served, counting only working days and excluding Sundays and public holidays, to file FORM GST REG-04 in reply. Miss that window and the application is automatically rejected through FORM GST REG-05. There is no simple resubmission from there. You start the entire application again from zero, including a fresh ARN and a fresh clock.

Your GSTIN encodes your state, and that has a consequence you won't see coming

A GSTIN is fifteen characters long, and the first two digits are a state code. That single structural fact is why moving your principal place of business to a different state is never a simple form update. A same-state move to a new address is a REG-14 core-field amendment, filed within fifteen days, reviewed by an officer but comparatively light. A cross-state move is something else entirely. Because the existing GSTIN is tied to the old state's code, it has to be cancelled outright and a fresh registration obtained in the new state under a fresh number. Freelancers who relocate and search for a GST address change, assuming it works like the same-state process, are usually surprised by this the first time it comes up, worth knowing before the move rather than after.

BuildWright prepares REG-01 and the annexures behind it, tracks the ARN through to approval, and answers a REG-03 query inside the seven days if one lands.