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Documentation Index

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Aczen Bilz handles the heavy lifting of GST compliance so you can focus on running your business. Every invoice you raise automatically has CGST, SGST, or IGST applied at the correct rate, every purchase bill feeds into your input tax credit (ITC) ledger, and the platform continuously reconciles your outward and inward supplies so there are no surprises when filing day arrives.

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Key GST concepts

Before exploring the features, here is a quick reference to the GST terms you will encounter throughout Aczen Bilz.
Your Goods and Services Tax Identification Number — the 15-digit registration number issued by the GST Council. Aczen Bilz uses your GSTIN to validate supplier GSTINs on purchase bills and populate your filings correctly.
Harmonised System of Nomenclature (HSN) codes classify goods; Service Accounting Codes (SAC) classify services. You assign these codes to your products and services in Aczen Bilz, and they appear on every invoice and GST return automatically.
GST applies at five standard rates: 0%, 5%, 12%, 18%, and 28%. The correct rate is determined by the HSN/SAC code you assign to each item.
  • CGST (Central GST) and SGST (State GST) apply on intra-state transactions — the total GST is split equally between the central and state governments.
  • IGST (Integrated GST) applies on inter-state transactions and exports — the full tax goes to the central government and is later apportioned to the destination state. Aczen Bilz determines which tax type applies based on the buyer’s and seller’s states.
ITC is the GST you have already paid on purchases. You can offset it against your output GST liability. Aczen Bilz tracks ITC automatically from every purchase bill you record and flags any credits that may not be claimable.

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What Aczen Bilz does for you

Automatic GST calculation

When you create an invoice, Aczen Bilz calculates CGST/SGST or IGST in real time based on the HSN/SAC code, tax rate, and the buyer’s state. You never need to calculate tax manually.

ITC tracking

Every purchase bill you record is added to your ITC ledger. Aczen Bilz separates ITC-eligible and ITC-ineligible purchases and shows you the net GST payable at a glance: Output GST − Input GST = Net Payable.

GSTR-1 preparation

Aczen Bilz compiles your outward supply details — invoice number, customer GSTIN, taxable value, IGST, CGST, SGST, and CESS — into GSTR-1 format and lets you export a CSV for upload to the GST portal.

GSTR-3B preparation

The GSTR-3B summary is auto-populated from your invoices and purchase bills, including outward supplies, ITC claims, reverse charge amounts, and exempt/nil-rated supplies. Export as JSON or Excel for filing.

ITC mismatch detection

Aczen Bilz compares your purchase records (GSTR-2A) against the auto-drafted ITC statement (GSTR-2B) and highlights discrepancies so you can resolve them before filing.

GST liability dashboard

View your total output liability, eligible ITC, and net GST payable for any period. Use the period comparison tool to spot trends and the tax payment planner to avoid last-minute cash flow stress.

Penalty calculator

If a filing is delayed, the penalty calculator estimates the interest and late fee owed so you can account for it accurately when making payment.

Credit note reversal

When you issue a credit note, Aczen Bilz reverses the associated output GST and adjusts your ITC summary so your GSTR-3B stays accurate.

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How Aczen Bilz keeps you compliant

Aczen Bilz applies compliance checks continuously, not just at filing time:
  • Invoice validation — each invoice is checked for a valid GSTIN (if the buyer is GST-registered), a valid HSN/SAC code, and the correct tax split before it is saved.
  • Real-time ITC eligibility — purchase bills are immediately assessed for ITC eligibility. Bills from suppliers without a GSTIN are marked as ineligible so they do not inflate your credit claims.
  • Mismatch alerts — if a supplier’s filed GSTR-1 does not match your purchase records, Aczen Bilz flags the discrepancy in the ITC Match centre before you file.
  • Filing calendar — upcoming GSTR-1 and GSTR-3B due dates appear in the GST compliance calendar so you always know what is due and when.
GST rates and rules change periodically. Aczen Bilz updates its rate tables when the GST Council notifies changes, but you should verify that HSN/SAC codes assigned to your products reflect the latest classification.

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Next step

When you are ready to file, see File GSTR-3B returns with Aczen Bilz for a step-by-step walkthrough of the filing workflow.