GSTR-1 vs GSTR-3B
Difference, deadlines and reconciliation

Core difference

Filing deadlines

• GSTR-1 monthly taxpayers: commonly 11th of next month.
• QRMP GSTR-1/IFF timing differs.
• GSTR-3B monthly taxpayers: commonly 20th of next month.
• QRMP payment/return due dates differ by state category.

Why mismatches happen

• Invoice in GSTR-1 but tax paid in wrong GSTR-3B period.
• Credit notes not adjusted correctly.
• Amendments not filed.
• GSTR-1 filed late and customer ITC affected.

Consequences of mismatch

• GSTR-9 reconciliation differences.
• Customer ITC denial or dispute.
• GST notice under scrutiny.
• Working capital blocked while corrections happen.

Monthly CA reconciliation

• GSTR-1 versus books sales register.
• GSTR-3B liability versus GSTR-1.
• GSTR-2B versus purchase register.

How to use this page safely

GSTR-1 vs GSTR-3B depends on the financial year, entity type, location, turnover, portal status, notice dates, transaction volume, documentation quality and whether past filings were done correctly.

Use this page as preparation guidance. Before filing, responding, registering, claiming or appealing, share exact forms, notices, portal screenshots, amounts, due dates and prior acknowledgements with a qualified professional.

A strong WorkIndex quote should state scope, assumptions, documents required, timeline, exclusions and whether follow-up, correction filing, reconciliation or notice-response support is included.

How to compare WorkIndex responses

• Ask whether the expert has handled this exact service type, industry and portal workflow before.
• Confirm whether the quote includes filing only, advisory only, or also reconciliation, correction, response drafting and follow-up.
• Prefer experts who ask for records before final pricing instead of quoting blindly.
• For urgent matters, include statutory deadline, notice/order date, current portal status and financial exposure.
• Keep acknowledgement, computation, challan, report, working papers and communication trail after completion.

Keep these ready before requesting quotes

• PAN, Aadhaar, GSTIN, TAN, DIN, CIN, LLPIN, UAN, DSC or registration number as applicable.
• Portal login access or screenshots from Income Tax, GST, MCA, EPFO, ESIC, ICEGATE, RERA or other relevant portals.
• Previous filings, acknowledgements, challans, certificates, orders, notices, audit reports and working papers.
• Bank statements, invoices, contracts, payroll records, books export, rent agreements, transaction reports or project documents relevant to the case.
• A short written summary of what happened, what deadline exists, what help you need and whether support can be remote or must be local.

How to get better quotes faster

• Mention whether you need one-time filing, urgent correction, registration, calculator review, audit, monthly retainer, appeal, technology build or advisory review.
• Add approximate transaction count, employee count, turnover range, number of filings/years pending, and any notice deadline so experts can size the work properly.
• For accounting and bookkeeping pages, share the software used, number of bank accounts, monthly invoice count, GST status, payroll size and whether old cleanup is needed.
• For developer pages, share the product type, existing codebase, framework preference, design readiness, integrations, hosting and expected timeline.
• For tax and GST disputes, upload or summarise the section/form/order number, demand amount, date of service, due date and current portal status before asking for a fee quote.

FAQs

Is posting a requirement on WorkIndex free?

Yes. Customers can post requirements for free and compare relevant professional responses before hiring.

Can this be handled online?

Many finance, tax, GST, accounting, compliance and web development tasks can be handled online if records and access are clear.

How should I compare quotes?

Compare scope, experience, timeline, required documents, follow-up support and whether the professional has handled similar cases before.