GST Compliance,
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Upload your GSTR returns or purchase ledgers. The engine runs the applicable compliance checks and generates a citation-backed audit report — every figure tied to the CGST Act and Rules.
All Major GST Rules, Automated
From ITC reversals to vendor compliance — we handle the complexity so you don't have to.
180-Day ITC Reversal
Auto-calculate ITC reversals for unpaid invoices exceeding 180 days from Ledgers.
Late Fee & Delayed Reporting
Intelligent calculation of late fees and delayed reporting interest from your GSTR-1 (PDF or Excel).
Late Fee & Section 50 Interest
Parallel computation of late fees and interest based on actual filing dates from PDFs.
Annual Return Late Fees
Audit your GSTR-9 filings and detect potential late fee liabilities automatically.
GSTR-1 vs 3B vs 9 Recon
Three-way liability reconciliation across GSTR-1, 3B and the annual GSTR-9 to detect tax payment gaps.
GSTR-2B vs 3B ITC Matching
Match claimed ITC against GSTR-2B and flag over-claims and ineligible credit instantly.
1% Cash-Payment Restriction
Checks whether 1% of output tax was discharged in cash where monthly taxable supply exceeds ₹50 lakh, applying the full exception matrix.
Common-Credit Reversal Advisory
Flags every period with both taxable and exempt supplies where Rule 42/43 common-credit reversal applies, surfacing the exempt ratio and your declared reversal for verification.
ITC Time-Bar
Flags ITC availed after the 30-November cut-off, applying the Section 16(5) amnesty for FY 2017-18 to 2020-21.
RCM Reconciliation
Reverse-charge liability declared in GSTR-3B against books, including the Section 49(4) cash-payment requirement.
And we're constantly adding more rules as CBIC releases new notifications.
GSTBuddies vs. Other Tools
See why businesses are switching to a unified solution.
| Feature | GSTBuddies | Other Tools |
|---|---|---|
| All Rules in One Place | ||
| Rule 37 (180-Day ITC Reversal) | ||
| Rule 36(4) ITC Matching | ||
| Rule 86B Credit Monitoring | ||
| GSTR-3B Compliance Check | ||
| Automatic Rule Updates | ||
| Zero Setup Required | ||
| Works with Free Tier | ||
| Professional Reports Export | ||
| Real-time Dashboard |
Everything You Need for
GST Compliance
One platform. All rules. Zero headaches.
Instant Calculation
Upload your returns or ledger. Get a full, citation-backed compliance audit in seconds, not hours.
ITC Reversal: ₹12,450
Peace of Mind Dashboard
"You are all clear" or "1 Action Pending" — at a glance.
Bank-Grade Security
Your data is encrypted and never shared. AWS infrastructure.
Always Updated
We track CBIC notifications and roll out new checks as the law changes.
Compliance in 3 Simple Steps
From data upload to compliance report — faster than making chai.
Upload Documents
Simply drag & drop your GSTR PDFs or Purchase Ledgers. No portal login required.
Auto-Analyze
The engine auto-detects the applicable GST checks and generates a citation-backed audit report you can act on.
Audit Report
Get a professional compliance summary with clear action items and financial risks highlighted.
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Every return. Every check.
Cited to the Act.
Pick a return to see exactly what we audit — 37 checks across 6 GSTR returns, each traced to its CGST Act or Rule.
GSTR-3B · Summary & payment
12 checksLate fee per head from the actual filing date, capped per the Act.
Interest on net cash liability and on excess/wrongly-availed ITC.
Whether 1% of output liability was discharged in cash where applicable.
Reverse-charge liability declared vs the corresponding ITC, matched against your purchase register. The returns-only reverse-charge checks below run without it.
ITC availed after the statutory cut-off for the financial year.
ITC to be reversed — with Section 50 interest from the date of availment — where a supplier invoice stays unpaid beyond 180 days. Runs on the party ledger you export from Tally or Busy; payment dates exist nowhere in a GST return.
Outward liability declared in GSTR-1 against tax paid in GSTR-3B and against the annual GSTR-9, reconciled FY-wise and head-wise to surface short or late payment.
Declared liability in Table 3.1 (forward + reverse charge) that exceeds the Table 6.1 discharge (ITC + cash), head-wise.
Reverse-charge liability in Table 3.1(d) not discharged in cash via Table 6.1(B) — RCM cannot be paid through ITC.
RCM ITC in Table 4A(3) availed before the cumulative cash payment in Table 6.1(B) supports it — reversal if unsupported, interest for the delay.
RCM ITC availed in Table 4A(3) reconciled against the reverse-charge liability declared in Table 3.1(d). Reported for reconciliation — the demand for an unsupported excess is raised by the cash-payment check, so the same amount is never counted twice.
GSTR-3B periods with both taxable and exempt/non-GST outward supplies — Rule 42 common-credit reversal is attracted; surfaces the exempt ratio E/F for verification.
If unpaid after 180 days:
- Reverse the ITC you claimed
- Pay 18% interest on reversed amount if reversed after 180 days
- Interest will be calculated from date of invoice
The 180-Day Rule,
Simplified
The Problem
If you don't pay your supplier within 180 days of purchase, you must reverse the Input Tax Credit (ITC) you claimed—plus pay 18% interest. Tracking this manually across hundreds of invoices is a nightmare.
Our Solution
GSTBuddies automates this entirely. Upload your ledger, and we calculate:
- Exactly which invoices crossed 180 days
- How much ITC to reverse
- Interest due (with date calculations)
- Exportable report for your CA
Invoice: ₹1,00,000 | GST: ₹18,000 | Days Unpaid: 200
Trust the math, not the marketing
Every figure is derived from the CGST Act and Rules and verified against real GST filings — no manufactured reviews, just defensible calculations you can put straight into a client file.
Simple, Credit-Based Pricing
Buy credits and spend them across your GST compliance checks. No subscriptions — pay only for what you run.
Growth
Up to 5 small GST audits — best for regular filers
- 200 credits
- All GST checks (GSTR-1/2A/2B/3B/9/9C)
- Excel & PDF export
- Priority support
Ready to Stop Worrying About GST Compliance?
Start your automated, CGST-Act-cited GST compliance review.