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India • Tamil Nadu

GST software in Tamil Nadu

For Chennai, Coimbatore, Madurai, Tiruchirappalli, Tiruppur and Salem — multi-GSTIN on Pro and above, customs-linked import accounting, e-invoice, and CTPT inside payroll.

IndiaLast updated: 2026-05-24
The short answer

Tamil Nadu's Commercial Taxes Department runs one of India's most digitised state GST setups, and Chennai's Ennore and Kattupalli ports together handle the third-largest container volume in the country — which means a typical Chennai trading house deals with bill of entry matching, customs duty (BCD + IGST + SWS), and ITC under Section 16 of the CGST Act on imported goods on a weekly basis. HelloBooks files GSTR-1, GSTR-3B, GSTR-6 and GSTR-8, matches imports against bill-of-entry data, and runs Coimbatore-style engineering and Tiruppur-style knitwear workflows on the same platform.

Chennai imports, customs, and Section 16 ITC

Chennai's port commissionerate processes Bills of Entry for traders pulling components from China, Vietnam and the EU. Each bill of entry shows BCD (basic customs duty, non-creditable), social welfare surcharge (10% of BCD, non-creditable), and IGST on the assessable value plus BCD plus SWS — and only the IGST portion is creditable as input tax, claimed in GSTR-3B Table 4(A)(1) on the date the BOE is filed and goods are received. HelloBooks tracks the BOE number, BOE date, port code, and the IGST split per line so the ITC claim is auto-populated, the BCD goes to landed cost on the inventory item (not to a P&L expense), and the SWS rolls into duty cost.

For SEZ supplies and exports out of Chennai, the workflow mirrors the rest of India — LUT-based zero-rated supplies under Rule 89 for refund-of-ITC, or with-tax exports under Rule 96 for refund-of-tax. Tamil Nadu's SEZ footprint is concentrated in Sriperumbudur, MEPZ Tambaram, Madras Export Processing Zone and Nokia SEZ; HelloBooks tags SEZ buyers and exporters at the customer level and assembles the refund pack from the same record.

Coimbatore engineering, Tiruppur knitwear, and Salem steel

Coimbatore's engineering cluster — pumps, motors, wet-grinders, foundries — runs on multi-level BOMs, work orders and capital-goods ITC. Capital goods bought after July 2017 are eligible for full ITC at the time of purchase (subject to Rule 43 reversal if the asset is later used for exempt supplies), and depreciation under the Income-tax Act has to be claimed only on the value net of ITC. HelloBooks handles the ITC claim, the Rule 43 monthly proportionate reversal where applicable, and the income-tax depreciation base correctly — three calculations that small Coimbatore accountants often manage in three different spreadsheets.

Tiruppur's knitwear cluster is India's largest cotton-garment exporter, almost entirely export-focused. The workflow is LUT-based: raw cotton is bought with ITC at 5%, processed into garments at 5% (below ₹2,500) or 18% (above), and exported zero-rated under LUT. Refund-of-accumulated-ITC under Rule 89(5) is filed quarterly — Tiruppur exporters are among the heaviest users of inverted-duty-structure refunds in India because their input rate often exceeds their output rate. HelloBooks builds the Rule 89(5) refund pack from the same purchase-invoice and export-invoice data without a separate spreadsheet exercise.

CTPT, payroll, and CTD Tamil Nadu compliance

Tamil Nadu Profession Tax (CTPT) is levied under the Tamil Nadu Municipal Laws (Second Amendment) Act, 1998 — so unlike Maharashtra or Karnataka, profession tax in Tamil Nadu is collected by the local body (corporation, municipality or panchayat) on a half-yearly basis instead of a state-level monthly cycle. The slabs differ slightly across corporations, but the typical Chennai Corporation slab is zero up to ₹21,000/half-year, ranging up to ₹1,250/half-year above ₹75,000. HelloTime, the suite's HR & payroll app, computes CTPT inside India payroll at the right corporation's slab, generates the half-yearly challan, and tracks the September and March windows. The rest of statutory payroll — PF, ESIC, gratuity, FBP, Form 16, Form 24Q — runs the same as anywhere else in India.

Cash flow forecasting for Tamil Nadu businesses

Coimbatore textile spinners on 60-day yarn-buyer credit, Chennai SaaS firms invoicing US clients in USD, and Tiruchirappalli engineering exporters waiting on RoDTEP credits all share the same puzzle — revenue rhythm and outflow rhythm do not line up. Tamil Nadu profession tax (CTPT) settles half-yearly, TNEB power bills run monthly with prompt-pay rebates, ESIC contributions land on the 15th and GST on the 20th, while AR ageing drifts unpredictably. HelloBooks cash flow forecasting reads live AR ageing in original currency where applicable, recurring invoices, vendor bills, export-incentive receivables (RoDTEP, drawback) and the full statutory outflow schedule, then projects a 13-week and 12-month cash position. Driver-based scenarios let a Coimbatore mill model what happens when the largest buyer delays two cycles by 30 days while cotton prices spike 8% — answers that today come from a quarterly CA review rather than a live model.

Coverage

Key features for Tamil Nadu businesses

Bill-of-entry matching for Chennai imports

BOE number, date and port code captured against each import; IGST split auto-populated for the Table 4(A)(1) ITC claim, BCD and SWS rolled into landed cost.

Rule 89(5) inverted-duty refund for Tiruppur exporters

Accumulated-ITC refund pack assembled from purchase and export invoices — the LUT, shipping bill, BRC and HSN trail all in one document export.

Capital-goods ITC + Rule 43 reversal

Full ITC at purchase, monthly Rule 43 proportionate reversal where the asset serves exempt supplies, and income-tax depreciation base set on the net-of-ITC value.

CTPT half-yearly inside payroll

Tamil Nadu profession tax computed at the local corporation slab, half-yearly challan generated, and the September/March windows tracked alongside PF, ESIC and TDS.

See the full capability list:All HelloBooks features
Frequently asked

GST software questions Tamil Nadu businesses ask

When you record an import bill, the BOE number, date and port code are captured; the IGST portion is mapped to Table 4(A)(1) in GSTR-3B; and BCD plus SWS are added to the landed cost on the inventory item rather than expensed. This keeps the GST audit clean and ensures the income-tax depreciation base for any imported capital goods is correct.

Yes. Tiruppur exporters often have an inverted duty structure (input 5% on cotton + 18% on accessories, output 0% as zero-rated export under LUT). HelloBooks assembles the Rule 89(5) refund pack — LUT, shipping bills, BRC, purchase invoices, HSN-wise input tax, output zero-rated value — for quarterly filing.

CTPT is levied by the local body on a half-yearly cycle, not monthly. HelloBooks picks the right corporation slab (Chennai, Coimbatore, Madurai, Salem, Tiruchirappalli and others have small variations), computes CTPT per employee inside payroll, and generates the half-yearly challan for the September and March windows.

Yes. Multi-level BOMs, work orders, batch scheduling, MRP and job costing are all live. Capital-goods ITC claims at purchase are tracked, the Rule 43 reversal runs monthly where the asset serves both taxable and exempt supplies, and machine-hour rates feed into job costing without a separate spreadsheet.

Place-of-supply is derived from the buyer’s GSTIN, IGST is applied for inter-state, and e-way bills are generated automatically for goods shipments above ₹50,000. Validity is set based on the actual road distance — Chennai-Bangalore at ~350 km is a four-day EWB; Tiruppur-Kochi at ~280 km is a three-day EWB.

Yes. Composition taxpayers file CMP-08 quarterly and GSTR-4 annually; HelloBooks switches return cadence automatically based on registration type. The free tier covers a single-GSTIN composition trader with limited transactions, no card required to start.

Yes — driver-based cash flow forecasting is included on every paid tier (see /cashflow-forecasting). It pulls live AR ageing (in USD or INR), recurring SaaS or contract revenue, vendor bills, Rule 89(5) refund receivables for Tiruppur exporters, and statutory outflows (GST, TDS, CTPT, TNEB). Best/base/worst scenarios let Coimbatore mills and Chennai SaaS teams model buyer-delay and cotton-price shocks without rebuilding the Excel from scratch.
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HelloBooks files GST and e-invoices integration, keeps a full audit trail per Companies Act requirements, and is SOC 2 Type II attested. Data is hosted in Azure India regions so import-document scans and customs trails stay within Indian data-residency requirements.

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