GSTR-1 vs GSTR-3B
Automated Reconciliation with WebLedger
Regular reconciliation allows businesses to
Verify that outward supply reported in GSTR-1 matches the taxable value shown in GSTR-3B.
Prevent revenue leakages caused by missed or duplicated invoices.
Maintain accuracy in monthly tax declarations.
Stay audit-ready and compliant with GSTN data validation norms.
WebLedger ensures that your outward supply data is always aligned, transparent, and compliant — automatically.
GSTR-1 vs GSTR-3B: Key Differences
Basis
- Nature
- Frequency
- Purpose
- Data Level
- Auto-population
- Due Date
- Error Sensitivity
- Cross-Verification
GSTR-1
- Detailed outward supplies
- Monthly/Quarterly
- Invoice-wise sales
- Invoice details
- GSTR-2A/2B & 3B
- 11th / 13th
- Buyer ITC
- With GSTR-3B
GSTR-3B
- Summary of sales, purchases & ITC
- Monthly
- Declares total tax & ITC
- Consolidated figures
- Partially auto-filled from GSTR-1
- 20th of next month
- Tax liability & compliance
- Must match GSTR-1
How WebLedger Performs GSTR-1 and GSTR-3B Reconciliation
WebLedger simplifies reconciliation by systematically comparing every outward supply component filed in GSTR-1 with the corresponding details reported in Table 4 of GSTR-3B. This ensures accurate alignment of your sales figures across returns without manual intervention.
Credit/Debit Notes (CDNR/CDNUR)
Reconciles post-sale adjustments, ensuring corrections are reflected in both returns.
B2B Invoices
Matches invoice-wise sales reported in GSTR-1 with total taxable value in GSTR-3B.
B2C (Small and Large)
Cross-verifies B2Cs and B2CL transactions against consolidated figures.
Exports and Zero-Rated Supplies
Confirms outward export supplies are correctly captured in GSTR-3B.
Amendments and Adjustments
Identifies any modifications made after filing and validates their consistency.
Common Challenges

Sales mismatch between GSTR-1 & 3B

ITC reversals not reflected

Incorrect ITC claims

Late fees & penalties

Manual computation errors
Benefits of Automated Reconciliation

Prevent penalties and notices due to sales underreporting.

Eliminate manual cross-verification errors.

Ensure outward supplies remain consistent across both returns.

Save time and improve compliance accuracy.

Maintain audit-ready, transparent data records.
Prevent penalties and notices due to sales underreporting.
Maintain audit-ready, transparent data records.
Save time and improve compliance accuracy.
Eliminate manual cross-verification errors.
Ensure outward supplies remain consistent across both returns.
GSTR-1 & 3B Mismatch?
WebLedger pinpoints mismatches, identifies the reason, and helps you align both returns before filing the next cycle — ensuring your outward supply data remains consistent and compliant.
Frequently Asked Questions
Quick answer to questions you may have.
Why reconcile GSTR-1 and GSTR-3B?
To ensure outward supplies reported in both returns are consistent and avoid penalties for underreporting.
What does WebLedger compare?
All fields from GSTR-1 (B2B, B2C, CDNR, exports) against Table 4 of GSTR-3B.
How are discrepancies handled?
WebLedger highlights mismatched values, explains causes, and generates a variance report.
Who should perform this reconciliation?
All GST-registered businesses submitting GSTR-1 and 3B, including SMEs and CAs.
What are the benefits?
Prevent penalties, maintain audit-ready records, save time, and ensure accurate tax reporting.