How does the IMS (Invoice Management System) work?

When a seller files GSTR-1, their invoices automatically appear in your GSTR-2A. In IMS, you Accept, Reject, or Keep Pending each invoice. Accepted invoices flow into your GSTR-2B ITC statement and auto-populate into GSTR-3B Table 4 — the complete ITC reconciliation loop.

How does the GST Wallet (Electronic Cash Ledger) work?

Register a bank account with an opening balance. Add funds to your GST Wallet (Electronic Cash Ledger) from the bank. When filing GSTR-3B, pay your IGST/CGST/SGST liability from the wallet. This simulates the exact same payment flow as www.gst.gov.in.

Can I register multiple GSTINs?

Yes. Register multiple businesses — each with its own GSTIN — and switch between them using the GSTIN Picker. File GSTR-1 as Business A, then switch to Business B and open GSTR-2A or GSTR-2B — the invoices from Business A automatically appear. This lets you practice the complete buyer-seller ITC chain: sell → file GSTR-1 → buyer sees in GSTR-2A/2B → accept in IMS → claim ITC in GSTR-3B.

Do I need a real PAN or GSTIN to practice?

No. The platform validates the format (so you learn correct structure) but does not verify against any government database. Use any valid-format dummy PAN (e.g. ABCDE1234F) and GSTIN (e.g. 29ABCDE1234F1Z5).

What is the GST Portal Proficiency Exam?

After completing the 80-module course (using at least 50 credits), students can attempt the GST Portal Proficiency Exam. Each attempt costs ₹100. The exam has 50 portal-based questions — not textbook theory. Questions are shuffled on every attempt. Topics include: invoice entry, ITC matching, late fee calculation, GSTR filing, and amendments. Pass at 70% to earn your certificate.

Is there a time limit for the course?

No. Credits never expire. Practice at your own pace — there is no deadline to complete the course or take the exam. Log in anytime and resume exactly where you left off.

How does the institute plan work?

See indiataxsim.com/institutes for the full guide. Institutes create an account at /auth/institute, purchase a credit pack (Starter / Medium / Large), and enroll students by email. Manage the batch on the web dashboard or the GST Simulator Android app: view students, add/enroll new students, assign credits (first transfer min. 50; top-ups min. 25), track progress, and message learners. Students practise on web and mobile with the same login.

Is there an Android mobile app?

Yes. GST Simulator by IndIaTaxSim is free on Google Play (com.indiataxsim.app) and Indus Appstore. Students and institutes both use the app with their website login. Institutes can open the Students tab to see their batch, add/enroll students, top up credits, and message them. Course videos: modules 1–4 free for everyone; Standard plan users, anyone with credits, and institute-enrolled students get the full video library on mobile — same rules as the web portal.

What certificate do I receive?

All students — whether self-enrolled or enrolled by an institute — receive the TaxSim platform certificate upon passing the GST Portal Proficiency Exam (70% or above). The certificate has a unique certificate ID, QR code, and is publicly verifiable at indiataxsim.com/verify.

What is the refund policy?

Individual plans: 7-day refund if fewer than 3 credits have been used. Once 3 or more credits are used, the plan is non-refundable. Exam fees (₹100) are non-refundable once an attempt is submitted. Institute plan fees are non-refundable once student enrollments have been made. See our Refund Policy page for full terms.

GST simulation — returns, e-invoice, e-way bill practice

India's Most Complete GST Simulation Platform

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.

🎥 80 video walkthroughs — first 4 free; full library with credits. Also on Android (Play Store & Indus Appstore).

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1 free credit on signup (regular taxpayer registration) · ₹500 = 50 credits · Exam path

Guidance: EN · हिन्दी · தமிழ் · മലയാളം · ಕನ್ನಡ · తెలుగు

Android app — GST Simulator

Get it onGoogle Play Also onIndus Appstore

Course Modules

GST Forms Covered

Schemes Supported

99%

Portal Coverage

Everything you need to master GST

Deep detail lives on dedicated pages — better for learning, faster to load, and clearer for search engines.

Platform Features

Registration, invoices, ledgers, e-Way Bill, e-Invoice, refunds & more.

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16 GST Returns

GSTR-1, 3B, 2A/2B, IMS, CMP-08, GSTR-7/8/9 and special schemes.

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80-Module Course

Guided walkthrough with videos, notes & multi-language guidance.

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Pricing & Credits

₹500 for 50 credits · free start · institute plans.

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Free Study Notes

GST study notes by topic — no login required.

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Free GST Tools

Late fee calculator, GSTIN decoder, HSN lookup.

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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

Institutes →

CA students

Portal practice path

Intermediate · Final · articles

CA guide →

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 1–4 free; full library with Standard, credits, or institute enrollment). 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 1–4 videos without a paid plan
✓Course progress synced with your web account
✓Free tools: GST calculator, HSN search, GSTIN lookup

Get it onGoogle Play Also onIndus Appstore

Package: com.indiataxsim.app · App name: GST Simulator

📱

Download free

Search "GST Simulator" by Sajan Thesis Works / IndIaTaxSim, or open the store links directly.

Google Play StoreOpen →Indus AppstoreOpen →

All GST returns & forms you can practice

17 forms — every major return type covered. Open any card for the full guide.

Full returns guide →

GSTR-1

Outward Supplies

Monthly / Quarterly

GSTR-1A

Amendments

As needed

GSTR-2A

Auto-Drafted Inward

Auto-populated

GSTR-2B

Static ITC Statement

Monthly / Quarterly

IMS

Invoice Management System

Continuous

GSTR-3B

Monthly Summary

Monthly / Quarterly (QRMP)

GSTR-9

Annual Return

Annual (FY-wise)

GSTR-9C

Reconciliation Statement

Annual

GSTR-7

TDS Deductor Return

Monthly (due 10th)

e-Invoice

IRN — Invoice Registration

Per B2B invoice

CMP-08

Composition Quarterly

Quarterly

GSTR-4

Composition Annual

Annual

IFF

Invoice Furnishing Facility

QRMP months 1 & 2

GSTR-8

E-Commerce Operator TCS

Monthly (due 10th)

GSTR-5A

Non-Resident OIDAR Provider

Monthly (due 20th)

GSTR-5

Non-Resident Taxable Person (NRTP)

Monthly (due 20th)

GSTR-6

Input 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.

See all platform features →

Start in 4 steps

Create Your Free Account

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 completing the course (50+ credits used), 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 ₹500 = 50 credits. Full table and institute packs on the pricing page.

View pricing →

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), 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 50 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

The Complete GSTSimulation Practice Portal

Everything you need to master GST

Platform Features

16 GST Returns

80-Module Course

Pricing & Credits

Free Study Notes

Free GST Tools

Who is this for?

Commerce & CA Students

Tax Professionals & Accountants

Coaching Institutes & Colleges

Business Owners

Practice GST on the go — GST Simulator

Download free

All GST returns & forms you can practice

Why IndIaTaxSim

Delete Filed Return & Re-File

One-Click Demo Data — Delete Anytime

Help Text on Every Form Field

Multiple GSTIN — Switch Anytime

Late Fee & Interest Auto-Calculated

Full ITC Chain Simulation

Start in 4 steps

Create Your Free Account

Register a Business & Create Invoices

File Every Return

Pass the Exam & Get Certified

Simple credit pricing

FAQ

We're here to help

The Complete GST
Simulation Practice Portal