
The GST proceeding, argued end to end.
Specialist drafting benches for every stage of a GST matter, a decision environment built around every draft, and a knowledge tree where each section carries its verified rules, notifications, circulars and judgments. Built with former CGST officers, practising advocates and GST litigation specialists who work GST matters.
Not sure a bench fits? Start in the open workspace.
A clean AI workspace for the miscellaneous work a bench does not cover: a quick opinion, a calculation, a plain letter, a second read on a clause. GSTArk keeps its GST knowledge and its verified sources; you keep the freedom of a blank page.

One matter, one thread: the case moves with you until a definite outcome
Every stage inherits the facts, record and statutory history of the one before in an append-only case ledger.
Not a chatbot. A chambers.
Every capability sits where a practitioner would expect it: benches for drafting, a decision room for judgment, a tree for the law, a dashboard for the clock.
A dedicated bench for every stage, both sides of the table
Scrutiny, SCN drafting and reply, adjudication, refunds, audit, appeals, advance ruling and more. Each bench carries an inbuilt prompt framework and a GST legal skill curated by expert practice.

A generic AI workspace, still grounded in GST
Chat freely: attach PDFs, images and Excel, use the camera on a notice, copy and regenerate. When a specialist task is detected, GSTArk names the bench and what it adds; you can always generate here anyway.
The draft is the start, not the end
Around every output: success probability, financial exposure, the department's likely next moves, the other side's limitation clock, and what your draft omitted, argued from both sides.
The limitation clock, always armed
Every dated proceeding builds its timeline. The dashboard leads with what must move first and the last dates that cannot slip.
Act before 28 Oct.
The statute as a living tree
247 sections across CGST, IGST and UTGST, each node carrying its rules, notifications, circulars and judgments, opening into a full statute spine with the source text alongside.
Answers as the law stood on the relevant date
GST law moves; your matter is judged on the law of its day. GSTArk's models are amendment-aware: the provision, rate and rule applied are the ones in force for the disputed period, not today's text pasted backwards.
Applies Section 16(2)(aa) post 01.01.2022 amendment.
Output you can file, not paste and pray
Exact A4 paged preview, editable in place, refine by instruction, notesheet engine for the file, and DOCX export from every bench. What you see is the page that prints.

Not Generic AI. GST Workflow Intelligence.
Generic AI tools need you to prompt them. GSTArk gives you structured GST workflows, built-in expert logic, editable A4 drafts and source-aware output.
Built for every requirement of indirect tax litigation.
Every card, prompt, calculation and citation maps to statutory provisions across the CGST, IGST, and UTGST Acts.
Expert Inbuilt Drafting Prompts
Every bench carries built-in GST expert prompt logic. Dropdowns change legal posture and output package without prompt engineering.
Financial Document Analysis
Generate financial analysis reports with exposure, reconciliation, variance, and proof layers directly consumable by drafting benches.
Comprehensive A4 Reports & Drafts
Outputs arrive as paginated A4 legal draft previews — edit in place, add instructions, save versions, or export to DOCX/PDF.
Structured GST Procedure
Workflow mapped to statutory proceedings: scrutiny, audit, inquiry, SCN, adjudication, review, recovery, refund, registration and appeals.
Amendment & Rate-Timeline Aware
Answers grounded strictly in the law as it stood on the disputed tax period, not today’s text pasted backwards.
Word Environment (Word Add-in)
Draft and review directly inside Microsoft Word with live GSTArk citation validation and verified database lookup.
PDF, Word & Email Output
Seamless multi-format export for formal dispatch, judicial filing, internal department notesheets, or client email briefs.
Targeted Folder Analysis & SCN Agents
Automated agents for SCN construction, issue analysis, and speaking adjudication orders reading directly from case records.
Portal Summary Intelligence
Speaking SCN with DRC-01 summary, speaking OIO with DRC-07 summary, and DRC-08 rectification summaries alongside full legal drafts.
GSTAT Litigation Workflows
Dedicated GSTAT filing packages: APL-05 / APL-06 / APL-07 logic, stay petitions, and written submissions without inappropriate DRC forms.
Verified Source Layer
247 sections, 213 rules, circulars, notifications, and 10,220+ verified judgments — missing authority flagged as unverified.
Notesheet & Internal Note Support
Department-side notesheets for scrutiny, revision, recovery, and personal hearing stages integrated directly into the file.
One case file that travels, stage to stage, until the matter is closed
A draft is never an orphan. It joins its case, and the case moves: scrutiny to notice, notice to reply, reply to adjudication, order to appeal. Every stage inherits the facts, the record and the history of the one before, in an append-only ledger nothing can rewrite.
Every open matter on one ledger: bench, demand exposure, draft status, the limitation clock and the next required action, sorted by deadline urgency. Sample matters shown.

Before you file, know how the other side moves.
The draft is the start, not the end. GSTArk runs decision intelligence engines around every draft: calculating success probability, measuring financial exposure, tracking the opponent's limitation clock, and scanning for omissions argued from both sides.

Probability Engine
Calculates the appeal sustainability and defensibility probability for each legal ground individually based on precedent grounding.
Exposure Calculation
Separates principal tax demand from accrued Section 50 interest and statutory penalty assessments to model exact financial exposure.
Opponent's Limitation Clock
Tracks the departmental officer’s statutory deadlines under Section 73(10) and Section 74(11), highlighting when proceedings are time-barred.
Attack Surface & Omission Finder
Reviews drafts from both revenue and taxpayer perspectives to catch omitted statutory provisos, natural justice defects, and unaddressed facts.
Precedent Map & Citation Resolution
Resolves all cited case laws, circulars, and notifications against the verified corpus, flagging unverified authorities before finalization.
Notesheet Engine
Generates department-grade speaking notesheets and internal briefings that travel with the case file across proceeding stages.
Built for both sides of GST practice.
Professionals need authority and reasoning. Taxpayers need clarity, defence, and compliance action. GSTArk supports both without mixing their workflows, and the same matter can be examined from either chair.
Revenue practice
Scrutiny notes, notices, adjudication orders, audit reports, summons, investigation memos, recovery notices, and departmental reasoning.
Taxpayer practice
Replies to SCNs, appeal grounds, refund responses, reconciliation support, personal hearing submissions, and compliance corrections.
Your GST portal, read for you.
A read-only bridge in development for taxpayer accounts. Connect your portal once, fetch returns and notices automatically, detect discrepancies early, and feed the fetched records directly into the drafting benches without double entry.
How the Read-Only Bridge Works
Notices, orders, GSTR-1, 3B, 2B and ledgers.
Taxpayer approves via OTP. Access will run through a licensed GST Suvidha Provider; zero password storage.
Will match returns, find short payment, compute S.50 interest and check refunds.
Populates SCN Reply, Reconciliation, and Refund benches so figures are not typed in again.
What the portal bridge will do for taxpayers
Fetch Notices & Orders
Will fetch notices and orders directly from the taxpayer's GST portal account, with each notice's due date in view.
Three-Way Return Reconciliation
Will fetch returns and reconcile them: GSTR-1 against GSTR-3B, GSTR-2B against books of account, and ITC claimed against ITC available.
Short Payment & Interest Computation
Will find short tax payments across periods and compute the Section 50 interest on each shortfall.
Refund Eligibility Detection
Will identify refunds the taxpayer may claim under export turnover, inverted duty structure, or excess cash ledger balance.
Direct Bench Feeds (No Double Entry)
Will feed what it finds straight into the right bench (SCN reply, reconciliation, refund claim), so figures are not typed in again.
How it works, stated plainly.
We designed this bridge with these safeguards. You retain complete ownership and control of your taxpayer account at all times.
The taxpayer enables API access on gst.gov.in and approves each session with a one-time password (OTP).
GSTArk never files, amends, submits, or changes anything on the portal. It only reads records into your file.
GSTArk never asks for, receives, or stores your GST portal password under any circumstances.
Access will run through a licensed GST Suvidha Provider.
Built solely for taxpayer accounts and practitioners acting on behalf of taxpayers; not connected to department internal systems.
Be first to test the Taxpayer Portal Bridge
The bridge is currently in closed development.
Request early accessWrite to us and we will reply when early testing opens.
The statute, grown as a living tree.
247 sections across CGST (190), IGST (28) and UTGST (29), organised in 39 statutory chapters (21 CGST + 9 IGST + 9 UTGST). Every section is a node, and every node carries its whole legal life.
Every leaf is a link read from GSTArk's database for that section; nothing on the tree is illustrative. Rules, notifications and circulars are drawn in full; for judgments the ten most recent verified ones are drawn and the badge carries the full count.
s.16 · Eligibility and conditions for taking input tax credit
Rules
3- Rule 36Documentary requirements and conditions for claiming input tax credit
- Rule 37Reversal of input tax credit in the case of non-payment of consideration
- Rule 37AReversal of ITC in case of non-payment of tax by the supplier and re-availment thereof
Notifications
13- 22/2024-Central Tax2024-10-08Notifies the special procedure under section 148 of the CGST Act for rectification of demand orders issued for contravention of section 16(4) of the said Act
- 17/2024-Central Tax2024-09-27Appoints. — (a) the date of publication of this notification in the Official Gazette, as the date on which the provisions of sections 118, 142, 148 and 150 of the said Act shall come into force; and (b) the 1st day of November, 2024, as the date on which the provisions of sections 114 to 117, 119 to 141, 143 to 147, 149 and 151 to 157 of the said Act shall come into force.
- 28/2023-Central Tax2023-07-31Appoints, — (a) the 1st day of October, 2023, as the date on which the provisions of sections 137 to 162 (except sections 149 to 154) of the said Act shall come into force; (b) the 1st day of August, 2023, as the date on which the provisions of sections 149 to 154 of the said Act shall come into force.
- 18/2022-Central Tax2022-09-28Appoints the 1st day of October, 2022, as the date on which the provisions of sections 100 to 114, except clause (c) of section 110 and section 111, of the said Act shall come into force.
- 39/2021-Central Tax2021-12-21Appoints the 1st day of January, 2022, as the date on which the provisions of sections 108, 109 and 113 to 122 of the said Act shall come into force.
- 4/2021-Central Tax (Rate)2021-06-14Amends N. No. 11/2017-CT(R) so as to notify GST rates of various services as recommended by GST Council in its 44th meeting held on 12.06.2021
- 2/2021-Central Tax (Rate)2021-06-02Amends N. No. 11/2017-CT(R) so as to notify CGST rates of various services as recommended by GST Council in its 43rd meeting held on 28.05.2021
- 24/2021-Central Tax2021-06-01Amends N. No. 14/2021 - CT in order to extend due date of compliances which fall during the period from “15.04.2021 to 29.06.2021” till 30.06.2021
- 14/2021-Central Tax2021-05-01Extends specified compliances falling between 15.04.2021 to 30.05.2021 till 31.05.2021 in exercise of powers under section 168A of CGST ActAmended by 24/2021-Central Tax
- 92/2020-Central Tax2020-12-22Appoints the 1st day of January, 2021, as the date on which the provisions of sections 119, 120, 121, 122, 123, 124, 126, 127 and 131 of the said Act shall come into force.
- 39/2020-Central Tax2020-05-05Makes amendments in N. No. 11/2020 - CT, dt. 21.03.2020 regarding special procedure for corporate debtors undergoing the corporate insolvency resolution process under the Insolvency and Bankruptcy Code, 2016
- 11/2020-Central Tax2020-03-21Provides special procedure for corporate debtors undergoing the corporate insolvency resolution process under the Insolvency and Bankruptcy Code, 2016Amended by 39/2020-Central Tax
- 9/2017-Central Tax2017-06-28Brings into force sec 44 of CGST Act, w.e.f. 01.07.2017
Circulars
15- 241/35/2024-GST2024-12-31Clarification on availability of input tax credit as per clause (b) of sub- section (2) of section 16 of the Central Goods and Services Tax Act, 2017 in respect of goods which have been delivered by the supplier at his place of business under Ex-Works Contract
- 237/31/2024-GST2024-10-15Clarifying the issues regarding implementation of provisions of sub-section (5) and sub-section (6) in section 16 of CGST Act, 2017
- 211/5/2024-GST2024-06-26Clarification on time limit under Section 16(4) of CGST Act, 2017 in respect of RCM supplies received from unregistered persons
- 193/5/2023-GST2023-07-17Clarification to deal with difference in Input Tax Credit (ITC) availed in FORM GSTR-3B as compared to that detailed in FORM GSTR-2A for the period 01.04.2019 to 31.12.2021.
- 195/7/2023-GST2023-07-17Clarification on availability of ITC in respect of warranty replacement of parts and repair services during warranty period.
- 183/15/2022-GST2022-12-27Clarification to deal with difference in Input Tax Credit (ITC) availed in FORM GSTR-3B as compared to that detailed in FORM GSTR-2A for FY 2017-18 and 2018-19
- 184/16/2022-GST2022-12-27Clarification on the entitlement of input tax credit where the place of supply is determined in terms of the proviso to sub-section (8) of section 12 of the Integrated Goods and Services Tax Act, 2017
- 171/3/2022-GST2022-07-06Clarification on various issues relating to applicability of demand and penalty provisions under the Central Goods and Services Tax Act, 2017 in respect of transactions involving fake invoices
- 160/16/2021-GST2021-09-20Clarification in respect of certain GST related issues
- 142/12/2020-GST2020-10-09Clarification relating to application of sub-rule (4) of rule 36 of the CGST Rules, 2017 for the months of February, 2020 to August, 2020
- 136/6/2020-GST2020-04-03Clarification in respect of various measures announced by the Government for providing relief to the taxpayers in view of spread of Novel Corona Virus (COVID-19)
- 112/31/2019-GST2019-10-03Withdrawal of Circular No. 105/24/2019-GST dated 28.06.2019
- 105/24/2019-GST2019-06-28Clarification on various doubts related to treatment of secondary or post-sales discounts under GSTWithdrawn by 112/31/2019-GST ab initio
- 72/46/2018-GST2018-10-26Circular to clarify the procedure in respect of return of time expired drugs or medicines
- 24/24/2017-GST2017-12-21Manual filing and processing of refund claims on account of inverted duty structure, deemed exports and excess balance in electronic cash ledger- Reg.Superseded by 125/44/2019-GST, in force until 2019-11-17
Judgments
288 · 10 most recent shown- GST Appellate Tribunal2026-08-31N. R. Builders v. Commissioner of Commercial Taxes, Karnataka
- GST Appellate Tribunal2026-08-27Lucknow Test House v. Shashi Bhushan Singh, Additional Commissioner Grade-II, State Tax Lucknow & Ors.
- GST Appellate Tribunal2026-08-21Santhhome Latex Enterprises v. Commissioner of CGST, Thiruvananthapuram
- GST Appellate Tribunal2026-08-21Vijayan Sahadevan (Deceased) v. The Commissioner of Kerala State GST, Thiruvananthapuram
- GST Appellate Tribunal2026-08-20Anil Kumar Singh v. Director, S/O Sanjay Kumar Agarwallahar Patti Nehru Road Thakurganj Brkis 855116, Agarwala's Bitumex Private Limited
- GST Appellate Tribunal2026-07-31Tata Unistore Limited v. Commissioner CGST & Ex., Navi Mumbai
- Andhra Pradesh High Court2026-04-27Sona Enterprises vs The Assistant Commissioner & Ors
- Telangana High Court2026-04-21Mahadev Hardware vs The Superintendent Of Central Tax Uppal ...
- Delhi High Court2026-04-18M/S Kanika Exports vs Union Of India & Ors
- Bombay High Court2026-04-17Parinee Realty Pvt Ltd vs Union Of India

A dossier on every section
The rules made under it, the notifications that shaped it, the circulars that explain it and the judgments that tested it, all counted and attached.
The statute spine
Open a section and walk its full anatomy, sub-sections, provisos and conditions, with its rules hanging off the spine where they attach.
Read the source itself
A reading drawer opens the full text of any circular, notification or judgment, gazette-style, beside a plain-language gloss.
Verified store, not scraped text
Everything in the tree resolves against GSTArk's verified database; drafts cite from here, so citations trace back to source.
Amendment timeline
Each node knows its versions, so you read the section as it stood on the date your matter turns on.
Neighbours and cross-links
Move to adjacent sections and follow references across Acts without losing your place.
From uploaded record to defensible draft.
GSTArk is a connected output system. Each step feeds the next — from bench selection through decision intelligence to editable A4 output. Users do not prompt. They select, review and refine.
Choose your instrument.
Each bench lists its instruments as cards: the primary instrument first, its supporting documents beside it. A card opens the guided input workspace, joins the case as a draft on the matter's timeline on first save, and returns every claim for your verification before anything issues.

Select Bench & Upload
Choose the matter type from structured GST workflow benches — scrutiny, SCN, OIO, audit, appeal, GSTAT, refund, registration, recovery or financial analysis. Upload notices, ledgers, or returns without a blank prompt.
Extract & Analyse Position
System extracts issues, amounts, tax periods, and missing facts. GSTArk applies built-in expert logic — limitation, natural justice, evidence sufficiency, mens rea, litigation risk, and document gaps.
Verify Grounding in Law
Relevant law and source materials are retrieved from the verified GST database of 247 sections and 213 rules, strictly as the law stood on the relevant tax period date.
Draft, Decide & Finalise
Receive an exact A4 paginated legal draft with citations and confidence markers, surrounded by decision engines. Refine in place, save versions, and export directly to DOCX or PDF.
Point an agent at a folder. Get a report, not a summary.
GSTArk's agents work the way an office works: on files. Give one a folder of returns, notices and worksheets and it returns analysis fit for the case file: figures reconciled, anomalies flagged, sources cited. Every result lands for human review, always.
Folder analysis agents
Reconciliation, ITC trail, e-way analytics and more: agents in development that read your records and prepare structured, citable reports.
Scheduled tasks
Daily limitation sweep, weekly pendency digest, amendment watch on the sections your matters touch. Set the cadence once; the work arrives.
Skills, yours to add
Load your office's drafting conventions and checklists as skills; every bench and agent respects them.
Twelve agents in development
Specialized intelligence agents spanning revenue and taxpayer lifecycles. Every agent result lands for human review, always.
Twelve agents in development across both practices
Reads returns & mismatch data; prepares ASMT-style notes & scrutiny findings.
In DevelopmentAnalyses audit observations and financial records to draft audit paras & SCN notes.
In DevelopmentReads P&L, balance sheets & ledgers to detect GST exposure across periods.
In DevelopmentCombines scrutiny, audit & financial findings into unified single or multi-issue SCNs.
In DevelopmentReads SCN, reply, and hearing notes to prepare issue-wise findings for speaking orders.
In DevelopmentPrepares speaking A4 orders for OIO, Commissioner Appeals, AAR and AAAR.
In DevelopmentExtracts allegations, identifies procedural defects & drafts structured replies.
In DevelopmentPrepares point-wise replies to audit observations with supporting statutory authorities.
In DevelopmentPrepares financial counter-analysis, reconciliation exhibits & compliance schedules.
In DevelopmentPrepares written submissions, hearing briefs and documentary evidence compilation.
In DevelopmentIdentifies appealable defects in adverse orders, drafting grounds & pre-deposit filings.
In DevelopmentAssesses AAR suitability and prepares advance ruling applications & hearing submissions.
In DevelopmentAnti-hallucination is not a feature. It is the foundation.
In GST litigation, a wrong citation can damage professional standing. Every conclusion must have a stated confidence level with its basis. Every legal reference must resolve against primary statutory records. Every procedural risk must be identified before submission.
Model access matched to task depth and plan.
GSTArk routes work through suitable AI models for drafting, analysis and document processing, while keeping all outputs inside GSTArk’s verification and citation discipline. Premium high-token models are controlled through higher plans, recharge credits or custom access — they are not unlimited at standard tiers.
“I spent twelve years inside indirect tax administration writing these notices, hearing these replies and drafting these orders. GSTArk is that experience, built into benches: it knows what the department will do next, because I did it.”
Institutional legal intelligence for GST practice.
Built with former CGST officers, practising advocates and GST litigation specialists who work GST matters. GST decision-making requires access to verified legal intelligence, not just document drafting.
Working on GST proceedings, we saw that officers, professionals and taxpayers struggled with three core challenges: understanding complete GST positions across amendments, evaluating litigation sustainability, and preparing defensible actions backed by verifiable evidence.
GSTArk is our response. A GST intelligence infrastructure platform combining verified statutory research, procedural analysis, pattern intelligence, and appellate awareness into one unified chambers.
Our Principles
Every citation is checked against GSTArk's corpus; what is not found is flagged.
No arbitrary outputs. Citations and reasons shown with every draft.
Users understand exactly why a position is strong or weak.
Shows the weak points of a position before you file.
A dedicated desktop chambers for serious drafting.
Work directly in a focused, low-latency environment on macOS and Windows with native file system access for your case records, folders, and offline knowledge tree caching.
Native macOS and Windows desktop builds are currently in testing.
Request early accessWrite to us and we will reply when early testing opens.
Start with GST workflows. Scale as you need.
All plans give access to GSTArk's structured workflow system. Higher plans and recharge credits unlock more capacity, advanced benches and controlled premium-model access.
7-Day Trial
Explore selected GSTArk® workflow benches at no cost.
- ✓Access to selected workflow benches
- ✓Limited generations
- ✓Basic model access only
- ✓Limited export and preview access
Starter
For individual taxpayers and light GST drafting needs.
- ✓Basic GST workflow bench access
- ✓Quick drafts and selected replies
- ✓Limited monthly generations
- ✓Basic model access only
- ✓Recharge required for heavy usage
Professional
For CAs, advocates, consultants and regular GST professionals.
- ✓More workflow bench access
- ✓Editable A4 legal output
- ✓Appeal, reply and GSTAT support within limits
- ✓Standard model access
- ✓Recharge required for premium-model tasks
Premium
For active GST professionals with high-volume drafting needs.
- ✓Higher usage limits
- ✓Advanced workflow benches
- ✓Financial analysis access within fair-use limits
- ✓Controlled premium-model credits where available
- ✓Priority output quality
Advanced
For high-volume GST practitioners and small firms with intensive drafting needs.
- ✓All workflow benches — no access restrictions
- ✓Higher generation limits than Premium
- ✓Full financial analysis access
- ✓Expanded premium-model credit allocation
- ✓Priority output quality
- ✓Suitable for small-firm and multi-matter use
Recharge Credits
Add-on credits for extra capacity beyond your plan.
- ✓Extra generations
- ✓Heavy document processing
- ✓Premium-model calls where available
- ✓Large context analysis
- ✓Additional financial analysis runs
Custom Plan
For firms, tax teams and departmental users with specific requirements.
- ✓Custom usage limits
- ✓Custom model access configuration
- ✓Bulk document processing
- ✓Team workflows
- ✓Dedicated source setup
- ✓Onboarding and training support
Start with GST workflows, not blank AI prompts.
Choose the matter type, let GSTArk apply built-in GST intelligence, then edit the A4 draft, notesheet or report. Every output travels with the case file to a definite outcome.