The Complete GST
Simulation Practice Portal
Practice every GST form, return, and portal workflow in a safe simulated environment — 99% of what the real Government portal offers, without any regulatory risk.
1 free credit on signup · ₹1,000 — now 50% off: ₹500 = 150 credits
530+
Students Practicing
30
Course Modules
17
GST Forms Covered
8
Schemes Supported
99%
Portal Coverage
Two self-paced GST courses — one fee
Learn GST on a practice copy of the GST portal. Watch the lesson or read the story in your language, then file it yourself — registration to annual return.
- ✓ Both courses included
- ✓ Start free — 1 credit on signup
- ✓ Pay once with Razorpay — no subscription
GST Portal Walkthrough
- ✓Every GST portal task in the order you meet it at work — registration, invoices, e-Way Bill, e-Invoice, GSTR-1, GSTR-3B, payments, annual return
- ✓Watch the module video, then do the same steps yourself on the simulator
- ✓Special schemes too: composition, QRMP, TDS, TCS, OIDAR, ISD, Multi-State Registration
- ✓Quiz and notes for each topic, then the GST Portal Proficiency Exam and a certificate
See all modules
- 1GST Registration — Overview & Part A (TRN) 🎁
- 2Registration Part B, Portal Login & Certificate (REG-06) 🎁
- 3Amendments — Authorised Signatory & Bank Account
- 4Load Demo Data — Explore GSTR-1, Pay Tax & Delete Filing
- 5Invoice Manager — B2B Inter-State, Intra-State & B2C Invoices
- 6Credit & Debit Notes, Invoice List & Export
- 7e-Way Bill — When Required & Generate from an Invoice
- 8e-Way Bill Portal — Standalone, Cancel, Consolidated & Bulk
- 9e-Invoice — IRN, Bulk Upload & Cancellation
- 10Search Taxpayer, GSTR-1 Overview & B2B Invoices 🎁
- 11GSTR-1 — B2C (Large), Exports & Credit/Debit Notes (Registered)
- 12GSTR-1 — CDNUR, B2C (Others), HSN Summary & Documents Issued
- 13File GSTR-1 & Amend with GSTR-1A
- 14GSTR-3B — Overview, Table 3.1 & Table 4 ITC
- 15GSTR-3B — Payment, Interest, Challan & Filing
- 16Ledgers, Filing Status & Downloads
- 17Second GSTIN, GSTR-2A & IMS
- 18GSTR-2B & Reconciliation
- 19Reverse Charge Mechanism (RCM) — Full Practice
- 20Challan PMT-06, Payment Gateway & Tracking
- 21Annual Return — GSTR-9 & GSTR-9C
- 22Composition — Registration, CMP-08 & GSTR-4
- 23QRMP Scheme & IFF
- 24TDS Deductor — Registration & GSTR-7
- 25E-Commerce Operator — Registration & GSTR-8 (TCS)
- 26OIDAR (GSTR-5A) & Non-Resident Taxable Person (GSTR-5)
- 27Input Service Distributor (ISD) — GSTR-6
- 28SEZ, Exports (LUT) & Works Contract
- 29GSTR-1 Amendments, DRC-01B, User Services & GST Practitioner
- 30Multi-State Registration & Filing Between Your GSTINs
GST Practice Lab
- ✓Follow one family business from its first GSTIN to its last return — every rule arrives when the story needs it
- ✓Smart Auto-Fill opens the right portal screen with every field filled from the story
- ✓You still do the real part: OTPs, SUBMIT, FILE and the challan payment
- ✓CA Meera explains each rule in plain words — every scene has notes, the law and a recap, and every chapter ends with a case study and a quiz
- ✓Watch the chapter video first, then live the same story yourself on the simulator
See all chapters
- 1📞 Registration 🎁
- 2🏠 Amendments
- 3🚚 Invoices & e-Way Bills
- 4🧾 e-Invoice
- 5📤 GSTR-1
- 6🔍 2A · IMS · 2B
- 7💰 RCM · GSTR-3B
- 8🛠️ Amend & correct
- 9👨👩👧 Special schemes
- 10🏁 Annual returns
- 11🏭 ITC rules · job work
- 12📨 Notices · closing
- 13🔁 Grievance · revocation
Why learners choose these courses
No batches or class timings. Learn at any hour and continue where you stopped.
The simulator looks and works like the GST portal, so the real one feels familiar on day one.
Every filing is verified with an OTP and paid by challan — just as a taxpayer does.
Guidance and screen help in English, Hindi, Tamil, Malayalam, Kannada and Telugu.
Practise on the website and follow the course on the Android app.
Pass the GST Portal Proficiency Exam and get a certificate with a QR code anyone can verify.
1 free credit on signup · Standard plan unlocks both courses
Learn GST by living it — the Malabar Spice Story
It begins with an order from another State — and suddenly a small spice shop in Kochi needs a GSTIN. Over 13 chapters the family grows into a factory, an online seller, a few honest mistakes and a letter from the GST officer. You live every moment with them, and you file every return yourself on the practice portal.
📖 The story
- 👩🏽Anjali & Rahul Nair — run Malabar Spice Traders, a spice shop in Kochi
- 👨🏽🏭Vivek Menon — Anjali's brother, runs a jar factory in Coimbatore (your 2nd company)
- 👩🏽💼CA Meera — explains every GST rule in plain words when the family gets stuck
- 🧑🏽💼Joseph Varghese — the accounts manager who files day to day
- 👴🏽Uncle Gopi, a marketplace, a govt canteen and a Sri Lankan exhibitor — they bring composition, TCS, TDS and NRTP into the story
- 🧔🏽Thomas Kurian — Malabar's third partner, who opens his own steel factory, sends work to a job worker, answers the GST officer and finally closes the business the right way
⚡ Smart Auto-Fill in every scene
- 1Read the scene: the story, CA Meera's explanation and the notes.
- 2Click Smart Auto-Fill — the real simulator screen opens with every field filled in from the story.
- 3Open "See how it's filled" — field, value and why, with the full menu path.
- 4Do the real-life part yourself: type the OTP, press SUBMIT / FILE, pay the challan.
- 5Switch to the other company and watch your filing appear there. Then take the chapter quiz.
Why students finish this course
Self-paced, any time
No batches, no class timings. Start a scene at midnight, stop halfway, pick it up next week — your progress waits for you.
Nobody to call
No demo calls, no counsellors, no follow-ups. Sign up, buy credits when you are ready, and start practising the same minute.
Zero typing
Press ⚡ Smart Auto-Fill and every field — GSTINs, invoice numbers, HSN codes, amounts — is filled in from the story for you.
The right screen, opened for you
The generator takes you straight to the correct portal screen and shows the exact menu path, so you learn where everything lives.
You still do the real part
Type the OTP, press SUBMIT or FILE, pay the challan, switch company — exactly what a taxpayer does on the real GST portal.
A story, not a manual
Every scene has people, a problem and a reason. Every chapter ends on a cliffhanger — you will want to know what happens next.
🏢 The companies you will run
Each one is a real GSTIN in your account — with its own returns, ledgers and notices.
Malabar Spice Traders
Kochi, Kerala (32)
Regular · monthly
Kovai Pack Industries Pvt Ltd
Coimbatore, Tamil Nadu (33)
Regular · e-invoice (AATO ₹8 Cr)
Anjali Home Foods
Kochi, Kerala (32)
Regular · QRMP
Nair Stores
Thrissur, Kerala (32)
Composition · trader 1%
Kerala Canteen Board
Thiruvananthapuram (32)
TDS deductor (GSTR-7)
SpiceKart
Kerala TCS registration
E-commerce operator (GSTR-8)
Malabar Spice HQ
Bengaluru, Karnataka (29)
Input Service Distributor
Ceylon Cinnamon Co
Kochi Spice Expo
NRTP (GSTR-5)
RecipeCloud Inc
Online
OIDAR (GSTR-5A)
Kurian Kitchenware
Kalamassery, Kerala (32)
Regular · monthly · job work
+ Anjali's new kitchens in Bengaluru and Chennai through Multi-State Registration
13 chapters · every GST situation
Ch 1 · Registration
Our First Inter-State Order
Ch 2 · Amendments
Setting Up House
Ch 3 · Invoices & e-Way Bills
The First Truckload
Ch 4 · e-Invoice
Big Company Rules
Ch 5 · GSTR-1
Month End: Who Sold What
Ch 6 · 2A · IMS · 2B
Where Is My ITC?
Ch 7 · RCM · GSTR-3B
Paying the Tax
Ch 8 · Amend & correct
Oops! Fixing Mistakes
Ch 9 · Special schemes
The Family Network
Ch 10 · Annual returns
Closing the Year
Ch 11 · ITC rules · job work
Thomas's Factory
Ch 12 · Notices · closing
Notices and Goodbye
Ch 13 · Grievance · revocation
Second Chances
Scene 1 (GST registration) is free · the full course unlocks with the Standard plan
Student reviews
What students say
★★★★★ 5.0 · 2 ratings
“Good Content.”
Everything you need to master GST
Deep detail lives on dedicated pages — better for learning, faster to load, and clearer for search engines.
Who is this for?
Commerce & CA Students
B.Com, BBA, M.Com, CA Foundation, Intermediate & Final students — practice every GST form exactly as on the real portal, with zero regulatory risk.
Tax Professionals & Accountants
Article assistants, junior accountants, and GST practitioners who need hands-on filing experience before working on live client accounts.
Coaching Institutes & Colleges
Batch enrollment, credit assignment, and progress tracking for GST coaching centres and commerce colleges.
Business Owners
Proprietors and company directors who want to understand the GST portal, their ledgers, and return filings before handing off to their CA.
Institutes
Train your whole batch
Enroll · credits · progress · app
CA students
Portal practice path
Intermediate · Final · articles
Android app
Practice GST on the go — GST Simulator
Students and institutes use the GST Simulator Android app with the same login as the website. Students watch course videos (modules 1, 2, 10 free; full library with the Standard plan or an institute seat). Institutes open the app to see their students, add / enroll students, top up credits, and message the batch. On Google Play and Indus Appstore.
- ✓Institutes: log in on mobile, view student list, add students, assign credits, message batch
- ✓Students: watch course videos on mobile (Standard / credits / institute access) — not web-only
- ✓Free preview: modules 1, 2, 10 videos without a paid plan
- ✓Course progress synced with your web account
- ✓Free tools: GST calculator, HSN search, GSTIN lookup
Package: com.indiataxsim.app · App name: GST Simulator
Download free
Search "GST Simulator" by Sajan Thesis Works / IndIaTaxSim, or open the store links directly.
All GST returns & forms you can practice
17 forms — every major return type covered. Open any card for the full guide.
Outward Supplies
Monthly / Quarterly
GSTR-1AAmendments
As needed
GSTR-2AAuto-Drafted Inward
Auto-populated
GSTR-2BStatic ITC Statement
Monthly / Quarterly
IMSInvoice Management System
Continuous
GSTR-3BMonthly Summary
Monthly / Quarterly (QRMP)
GSTR-9Annual Return
Annual (FY-wise)
GSTR-9CReconciliation Statement
Annual
GSTR-7TDS Deductor Return
Monthly (due 10th)
e-InvoiceIRN — Invoice Registration
Per B2B invoice
CMP-08Composition Quarterly
Quarterly
GSTR-4Composition Annual
Annual
IFFInvoice Furnishing Facility
QRMP months 1 & 2
GSTR-8E-Commerce Operator TCS
Monthly (due 10th)
GSTR-5ANon-Resident OIDAR Provider
Monthly (due 20th)
GSTR-5Non-Resident Taxable Person (NRTP)
Monthly (due 20th)
GSTR-6Input Service Distributor
Monthly (due 13th)
Why IndIaTaxSim
Delete Filed Return & Re-File
Made a mistake? Delete any filed return and practice the entire filing again — as many times as you need. No real portal allows this. Ideal for learning from errors.
One-Click Demo Data — Delete Anytime
Load realistic invoices and supply entries for any period instantly. See how GSTR-1, 2A, 2B, and 3B connect with real data. Delete demo data and start fresh whenever you want.
Help Text on Every Form Field
Every input on every form has built-in guidance — what to enter, which rule applies, and common mistakes to avoid. Like having a CA walk you through the portal.
Multiple GSTIN — Switch Anytime
Register multiple businesses and switch between them with one click. File GSTR-1 as Business A, switch to Business B, and see those invoices auto-appear in GSTR-2A and GSTR-2B — practice the complete buyer-seller ITC chain in a single account.
Late Fee & Interest Auto-Calculated
The platform computes late filing fees (₹50/day, capped at ₹10,000) and interest at 18% p.a. on overdue GSTR-3B — teaching you the real cost of delays.
Full ITC Chain Simulation
Supplier GSTR-1 → your GSTR-2A → GSTR-2B cut-off → auto-populated into GSTR-3B Table 4. The complete ITC supply-chain reconciliation loop in one platform.
Start in 4 steps
Create Your Free Account
Sign up with email or Google — free and instant. Explore all dashboards and portal pages at no cost.
Register a Business & Create Invoices
Complete the 7-step REG-01 form (1 credit). Create B2B/B2C invoices (1 credit each), download e-Invoice JSON (batch IRN format), and build your practice GST account.
File Every Return
Practice GSTR-1, 2A, 2B, 3B, IMS, GSTR-9, and 9C. Load demo data, delete filings, and re-file as many times as you need.
Pass the Exam & Get Certified
After using 100 credits in practice (either course), attempt the GST Portal Proficiency Exam (₹100/attempt) and earn your certificate.
Simple credit pricing
1 free credit on signup — use it for regular taxpayer GST registration. Standard plan ₹1,000 — now 50% off: ₹500 = 150 credits. Full table and institute packs on the pricing page.
View pricing →Refer a friend, earn free credits
Every student gets a personal referral link after signing up. When someone you refer signs up and buys the Standard Plan, they get 10 bonus credits on top of the usual 150 — and you get 25 free credits, no payment needed. No limit on how many friends you refer.
Create a free account to get your link →ITR Simulation — Practice Income Tax e-Filing
A new Income Tax return simulator, by Sajan Thesis Works — the makers of IndIaTaxSim. Same idea, for the Income Tax portal.
UAE TaxLab — Practice UAE VAT, Excise & Corporate Tax
Our UAE tax filing simulator, by Sajan Thesis Works — the makers of IndIaTaxSim. Register a practice TRN, file VAT 201 and Corporate Tax returns box by box, and pay from a simulated wallet — zero real-world risk.
India MCA Sim — Practise Company & LLP Filings
Our MCA21 V3 portal simulator, by Sajan Thesis Works — the makers of IndIaTaxSim. Reserve names, incorporate companies with SPICe+, obtain demo DINs and file ROC forms step by step — nothing is filed with MCA.
FAQ
Is this the real GST portal?+
No. TaxSim is an educational simulation platform. No real filings, registrations, or transactions are submitted to the Government of India, GSTN, or any government authority. All ARN numbers, GSTINs, and figures are simulated for training purposes only.
What can I do for free?+
Sign up and get 1 free credit instantly — use it to complete one regular taxpayer GST registration (practice GSTIN). All dashboards, portal pages, and certificate viewing are free forever. PDF/Excel/JSON downloads and GSTR-2A/2B viewing are always free. Further registrations, invoices, payments, and filing returns each cost 1 credit.
What are credits and what do they cost?+
Every new account gets 🎁 1 free credit on signup. Credits cost: GST Registration (1), Invoice creation (1 each), e-Invoice IRN generation (1 per batch), E-Way Bill generation (1 each), Consolidated E-Way Bill CEWB (1), Tax Payment (1), GSTR-1 Filing (1), GSTR-3B Filing (1), GSTR-9 Annual Filing (1), GSTR-9C Filing (1), GSTR-7 Filing (1), CMP-08 Filing (1), GSTR-4 Filing (1), GSTR-5A/5/6 Filing (1 each), Load Demo Data (1), IMS actions like reject (1), GSTP Registration (1), Account Reset (1). Free: Downloads, GSTR-2A/2B/IMS viewing, APL-01 Appeal, ARA-01 Advance Ruling, RFD-01 Refund, and portal browsing. The Standard plan (₹500) gives 150 credits that never expire.
Can I delete a filed return and practice again?+
Yes — unlike the real GST portal, TaxSim lets you delete any filed return and practice the entire filing from scratch, as many times as needed. This is one of our most-used features for exam preparation.
What is demo data and can I delete it?+
Demo data is a set of realistic invoices and supply entries you can load into any period with one click — ideal to see how GSTR-1, 2A, 2B, and 3B link together without creating entries manually. You can delete demo data anytime and start fresh with your own practice entries.
Which GST returns can I practice?+
GSTR-1 (all 14+ tables), GSTR-1A (amendments), GSTR-2A (auto-drafted inward), GSTR-2B (monthly and quarterly), IMS — Invoice Management System (accept/reject invoices), GSTR-3B (monthly/quarterly via QRMP), GSTR-9 (annual return), GSTR-9C (reconciliation), GSTR-7 (TDS deductor — monthly), GSTR-8 (e-commerce TCS operator — monthly), GSTR-5A (non-resident OIDAR provider — monthly), GSTR-5 (non-resident taxable person / NRTP — monthly), GSTR-6 (Input Service Distributor — ISD, monthly), CMP-08 (composition quarterly statement), and GSTR-4 (composition annual return). Each mirrors the real portal UI and workflow.
Get in touch
We're here to help
Course questions, institute setup, credits, exam, or the Android app — send a message or reach us directly. Typical reply within one business day.
info@indiataxsim.com
Best for course, billing & institute queries
WhatsApp (messages only)
+91 94950 84610
Mon–Sat · India business hours
Office
3/245/B Nedungottil House, Moongode
Trivandrum – 695573, Kerala
Sajan Thesis Works · UDYAM-KL-12-0069167 · D-U-N-S: 771974696
Send a message
Course, institutes, credits, exam, or app support.