The reference, indexed.

Every page in the Ledgester GST reference. Section 17(5) blocked credits, reverse charge, place of supply, due dates, calculators and document templates — each linked to the source section, rule or notification.

• Free GST Calculator
  Free online GST calculator for India. Compute GST inclusive or exclusive amounts at 0%, 5%, 12%, 18%, 28% with CGST/SGST/IGST split. Works offline.
• HSN & SAC Code Lookup with GST Rates
  Search any HSN code for goods or SAC code for services and get the applicable GST rate, chapter description, and notes. Free, fast, works offline.
• GST Invoice Generator with PDF Export
  Create GST-compliant tax invoices with auto CGST/SGST/IGST calculation, HSN codes, multiple line items, and instant PDF download. No signup, free forever.
• GST Compliance Calendar
  Stay on top of every GST return deadline. View due dates for GSTR-1, GSTR-3B, GSTR-9, CMP-08 and more, with reminders before each filing.
• GST Late Fee & Interest Penalty Calculator
  Calculate the exact late fee and interest payable for delayed GST returns. Supports GSTR-1, GSTR-3B, NIL returns and turnover-based caps.
• Place of Supply Calculator
  Determine the correct place of supply for goods or services and instantly see whether IGST or CGST+SGST applies, based on Sections 10–13 of the IGST Act.
• E-Invoice Applicability & Rules Checker
  Check whether e-invoicing applies to your business based on aggregate turnover threshold, exempted categories, and document types covered.
• E-Way Bill Rules & Reference Generator
  Understand e-way bill applicability, distance-based validity, exempted goods, and generate a reference summary for your transport documents.
• Input Tax Credit (ITC) Eligibility Checker
  Check whether Input Tax Credit is available on a specific expense. Covers Section 17(5) blocked credits, common ineligible expenses, and conditions.
• Reverse Charge Mechanism (RCM) Applicability Lookup
  Find out if reverse charge applies to a transaction. Covers notified RCM goods and services, GTA, legal services, security services, and unregistered supplier rules.
• GSTR-9 Annual Return Preparation Helper
  Walk through GSTR-9 annual return preparation step by step. Reconcile GSTR-1, GSTR-3B and books, identify mismatches, and avoid common errors.
• GSTIN Verification & Decoder
  Verify any 15-character GSTIN with checksum validation and decode state code, PAN, entity number and check digit. Free instant lookup.