ThynkTax is an agentic tax compliance and filing platform for Indian CA practices. It covers five domains - GST, ITR, TDS, ROC, and ESI/PF - with 18 AI agents that prepare returns, reconcile data, and file on approval.

How is ThynkTax different from ClearTax or Tally?

ThynkTax uses AI agents to actually prepare returns - not just store data. Agents fetch GSTR-2B, reconcile it, run 200+ validation checks, and produce a draft ready for your review. You approve; the Filing Agent submits.

Is ThynkTax safe? Where is my data stored?

All data is stored on Indian servers (Mumbai/ap-south-1) with AES-256 encryption. Row-level security ensures complete tenant isolation. SOC 2 Type II and ISO 27001 certified.

Can the agents file my returns automatically?

No. The Filing Agent is hardcoded as Tier 3 - it always pauses for explicit CA approval before submitting to GSTN, ITD, MCA, or TRACES. There is no configuration override.

What does "Tax Law API" mean? Is it free?

Yes, free and public. Every IT Act 2025 section, CBDT circular, GST notification, DTAA treaty, and landmark ITAT/HC/SC judgment is queryable via REST at api.thynktax.com. No paywall, no signup required for read access.

18AI agents

5compliance domains

200validation checks

536IT Act sections

91DTAA treaties

30+landmark judgments

Tax compliance,
finally on
autopilot.

ThynkTax runs 18 specialised agents across GST, ITR, TDS, ROC and ESI/PF. Agents validate, reconcile and file. You approve. Your practice grows.

Start free trial Watch 3-min demo

Trusted by CA firms managing 500+ clients across India

GSTreconciliation-2b

running

Matching 1,247 invoices · GSTR-2B ⟷ purchase register

started 12s ago847 / 1247

ITRform-26as-cross

completed

Cross-checked 26AS · AIS · TIS for PAN AABCT****K

finished 2m agoall checks passed

TDSchallan-match

waiting

3 challans need PAN correction · awaiting CA review

paused 4m agoTier 3 approval

LIVE·₹2.4Cr GST filed today·847 returns validated·99.2% accuracy (30d)

Filing season 2025-26

· Big-4 affiliate firms· Regional CA practices· CFO offices· Startup finance teams· NRI advisory desks· NGO compliance· Multi-GSTIN groups· Listed-co secretarial· Big-4 affiliate firms· Regional CA practices· CFO offices· Startup finance teams· NRI advisory desks· NGO compliance· Multi-GSTIN groups· Listed-co secretarial

Complete coverage

One platform. Every compliance domain.

From a CGST circular to a Companies Act XBRL filing - ThynkTax covers the workflows that consume your firm's hours.

GST

GST returns, reconciliation & IMS - automated end-to-end

GSTR-1, 2B, 3B and annual GSTR-9. Live ITC matching against purchase register, automatic 17(5) flagging, one-click IMS decisions, and bulk filing across multiple GSTINs.

GSTR-1/2B/3B/9

ITC mismatch detection

E-invoice + e-way bill

Nil return 1-click

12-month ledger sync

ITR

ITR for every schedule, auto-populated from 26AS / AIS / TIS

Old vs new regime side-by-side. Capital gains computation from broker statements. Foreign income, presumptive, salary, business - every schedule.

26AS · AIS · TIS pull

Old vs new regime

Capital gains auto-compute

TDS

24Q / 26Q / 27Q + Form 16 generation

TRACES integration, challan matching, late-fee calculator, and bulk Form 16 / 16A dispatch.

TRACES connect

Challan match

Bulk Form 16

ROC

AOC-4, MGT-7, XBRL tagging

Pre-fill from your books, validate against MCA schema, prepare director KYC, and track event-based filings.

XBRL validator

Director KYC

Event tracker

ESI / PF

ECR, challans, PT across 8 states

Monthly ECR upload, PF challan match, ESI eligibility, and Professional Tax filings for MH, KA, WB, TN, GJ, AP, TS, KL.

ECR auto-upload

PT - 8 states

Coverage tracker

How agents work

18 agents. Zero busywork.

Ingest

Data flows in from Tally, LedgrOS, GSP, banks and TRACES. ThynkTax normalises every source into a single ledger.

TallyLedgrOSGSTN via GSPTRACESBank statementsERI

Validate

Tier 1 agents run 200+ checks autonomously - ITC mismatch, HSN drift, 43B compliance, 206AB flags. Every result is logged with a reasoning trace.

200+ checks12 reconciliation typesReasoning trace

File

Tier 3 Filing Agent pauses. You approve. The agent then submits to GSTN / ITD / MCA with full audit log - defensible at any assessment.

CA approvalAudit-grade logDefensible

agents.thynktax · run_2403● live

Audit trail

Every action is logged with a reasoning trace - defensible at assessment.

See agents in action

Reconciliation

Reconciliation that thinks.

GSTR-2B vs purchase register, AI-powered mismatch explanations, one-click IMS decisions. 12 reconciliation types across every domain - including 26AS vs payroll, bank vs ledger, and ledger vs ITR pre-fill.

See reconciliation engine

847 records · 99.6% matched

InvoiceSupplierAmount (₹)SourceStatus

INV-22041Hindustan Logistics LLP1,24,5802B→2Bmatch

INV-22099Bharat Steel Traders47,2102B→PRmismatch

INV-22102Sterling Office Supplies8,9402B→PRlate

INV-22118Cogent Cloud Pvt Ltd1,89,0002B→2Bmatch

INV-22130Patel Realty Services32,450PR→17(5)blocked

↳ AI explanation: Bharat Steel raised invoice in Mar-26 but recorded by them in Apr-26 → propose IMS reject

Validation

Know before you file.

200+ validation checks before any return is submitted. Section 43B deposit tracking. Section 206AB specified-person flag. Auto-compute IGST / CGST / SGST from HSN. Catch the error that costs you a notice.

Browse all 200 checks

validations · GSTR-3B · 2026-04● live

Tax Law API

India's only live tax law API.

Every IT Act section, CBDT circular, GST notification, DTAA treaty and ITAT case law - queryable via REST. Free and public. Use it in your own tools or let our agents quote a section while explaining a decision.

Read API docs

GET/v1/tax-law/sections/80C

Section 80C - deduction limit, instruments, regime applicability.

REQUEST · cURL

curl https://api.thynktax.com/v1/tax-law/sections/80C \
  -H "Authorization: Bearer $TT_TOKEN"

RESPONSE · 200 OK

{
  "section": "80C",
  "act": "IT Act 1961",
  "new_section_2025": "123",
  "title": "Deduction for life insurance, PF, ELSS …",
  "limit_inr": 150000,
  "regime": [
    "old"
  ],
  "instruments": [
    "LIC",
    "EPF",
    "ELSS",
    "PPF",
    "NSC",
    "Sukanya Samriddhi"
  ],
  "last_updated": "2026-04-01"
}

Agent tiers

Human approval where it matters.

Three tiers. The line between autonomy and approval is hardcoded - not a setting your firm can disable.

Tier 1

Autonomous

Run freely. Log everything.

Validation, reconciliation, data ingestion. Continuous monitoring across all domains.

Data ingestion
Validation (200+)
Reconciliation
Notification triage

Tier 2

Supervised

Pause for review. Resume on approval.

Return preparation, IMS decisions, tax planning, advance-tax estimates.

Return preparation
IMS decisions
Tax planning
Notice drafting

Tier 3

Approval-gated

CA must explicitly approve every submission.

Filing. Always. No exceptions. No configuration override exists.

GSTN filing
ITD filing
MCA filing
TRACES upload

Filing Agent is hardcoded Tier 3. No configuration override exists in any plan, on any account.

API · v1 · Free & Public

The only queryable Indian tax law database. Free. No paywall.

536 sections of the IT Act 2025. 91 DTAA treaties. 30+ landmark judgments, all indexed and live.

GET/v1/tax-law/sections?domain=ITR

RESPONSE · 200 OK

{
  "total": 536,
  "sample": [
    {
      "s": "112A",
      "title": "LTCG on listed equity"
    },
    {
      "s": "194Q",
      "title": "TDS on goods purchase"
    }
  ]
}

GET/v1/tax-rules/dtaa/united-states

RESPONSE · 200 OK

{
  "country": "US",
  "interest_pct": 15,
  "dividends_pct": 25,
  "royalties_pct": 15,
  "ftc": true
}

GET/v1/tax-rules/gst-rate/8471

RESPONSE · 200 OK

{
  "hsn": "8471",
  "desc": "Automatic data processing machines",
  "igst": 18,
  "last_updated": "2026-04-01"
}

Browse IT Act 2025 DTAA Treaties TDS Rate Chart API Docs

From practices that ship

"Defensible. Fast. Genuinely intelligent."

The IMS decisions used to eat my Saturdays. Now they take twenty minutes and I trust the reasoning trace more than my own first pass.

CA Anand Subramanian

Partner · SK & Associates, Chennai

We migrated three years of client data in two weeks. The validation catches things our seniors miss - politely.

CA Priya Mehta

Founder · Mehta & Co, Ahmedabad

Filing season last year I had nine people on GST. This year four. ThynkTax did not just save hours; it changed my P&L.

CA Rohan Bhattacharya

Managing Partner · Bhattacharya Advisors, Kolkata

Pricing

Priced per practice. Not per filing.

One subscription. All five domains. No surprise per-return fees during peak season.

Starter

Solo CAs and 2-person firms taking their practice agentic.

₹999/ mo

Billed annually · Up to 10 client GSTINs

Start free trial

All 5 domains (GST, ITR, TDS, ROC, ESI)
Up to 10 client GSTINs
5,000 invoice reconciliations / mo
Email support · 24h SLA
Tax law API · 1,000 calls / day

Start your free 30-day trial.

No credit card. All 5 domains. Full agent access. Cancel anytime.

30-day trial Tally + LedgrOS sync SOC 2 · ISO 27001 Hosted in Mumbai

Or talk to a CA on our team

Tax compliance,finally onautopilot.

One platform. Every compliance domain.

18 agents. Zero busywork.

Ingest

Validate

File

Reconciliation that thinks.

Know before you file.

India's only live tax law API.

Human approval where it matters.

Autonomous

Supervised

Approval-gated

The only queryable Indian tax law database. Free. No paywall.

"Defensible. Fast. Genuinely intelligent."

Priced per practice. Not per filing.

Start your free 30-day trial.

Tax compliance,
finally on
autopilot.