GST Software for Surat Diamond Traders — The Complete 2026 Guide

Surat cuts 90% of the world's diamonds.

That single statistic — repeated in business publications, cited in industry reports, known to every trader in the city — tells you everything about the scale and significance of what happens in this city's diamond districts. From the cutting and polishing units of Varachha, Katargam, and Udhna to the trading firms of Mahidharpura and Minibazar, from the rough diamond importers of Surat's commercial center to the polished diamond exporters shipping to Antwerp, New York, Dubai, and Hong Kong — Surat's diamond industry is one of India's most economically significant and globally connected trading ecosystems.

For the traders who operate within this ecosystem — the rough diamond importers, the polished diamond traders, the manufacturers who transform rough into polished, the exporters who move finished diamonds to international buyers, and the domestic jewellery manufacturers who source polished diamonds from Surat — GST compliance is a daily operational reality with specific complexities that no other trading category in India quite matches.

Diamond GST is a specialized area. The rates differ based on whether the diamond is rough or polished, cut or uncut, natural or synthetic, loose or set in jewellery. Export compliance for diamonds involves specific SEBI and GJEPC regulations alongside standard GST export documentation. Rough diamond imports under the scheme of natural rough diamond import have their own KYC and tracking requirements. And the sheer per-transaction value of diamond trading — where a single invoice can represent crores of rupees — means that every billing error, every HSN code error, every GST rate error has financial consequences of a magnitude that trading in most other categories does not experience.

This comprehensive guide covers every GST compliance requirement specific to Surat's diamond trading community — the correct rates and HSN codes, e-invoicing for high-value diamond supplies, export compliance, and how ERP Group's accounting software serves the unique billing needs of the world's diamond cutting and trading capital.

Understanding Surat's Diamond Trading Ecosystem

The Structure of Surat's Diamond Industry

Surat's diamond industry is not a single market but a complete ecosystem — from rough stone to polished gem — with distinct business segments operating at each stage of the value chain.

Rough Diamond Importers and Sight Holders

At the top of Surat's diamond supply chain are the companies that import rough diamonds — either as De Beers Sight Holders (one of the exclusive group of companies that buy directly from De Beers through allocated sight boxes) or through the open rough diamond market via Mumbai's SEEPZ (Santacruz Electronics Export Processing Zone) and Surat's own diamond trading infrastructure.

Rough diamond imports are a highly specialized compliance area — involving customs duty, IGST on import (with specific provisions for the gems and jewellery sector), KYC requirements for natural rough diamonds, and Kimberley Process Certification for conflict-free rough diamond documentation.

Diamond Cutting and Polishing Units

The heart of Surat's diamond industry — the thousands of cutting and polishing units in Varachha, Katargam, Udhna, and other Surat industrial areas that transform rough diamonds into polished gemstones. These units range from large organized factories employing 200-500 workers to small artisanal workshops with 5-20 skilled craftsmen (karigar).

From a GST perspective, cutting and polishing units operate as manufacturers — transforming a raw material (rough diamond) into a finished product (polished diamond). The GST on the manufacturing process itself (job work on rough diamonds sent by a principal) has specific compliance requirements.

Polished Diamond Traders in Mahidharpura and Minibazar

Surat's famous diamond bazar — particularly the Mahidharpura and Minibazar areas — is where polished diamonds are traded between manufacturers, exporters, and domestic buyers. Trading happens in the characteristic diamond trading format — small packets of polished diamonds changing hands rapidly, with values running from lakhs to crores per transaction.

Diamond Exporters

Surat-based exporters shipping polished diamonds directly to international buyers — in Antwerp's diamond bourse, New York's 47th Street, Dubai's DMCC, Hong Kong's diamond market, and other global centers. Export compliance for diamonds involves export under LUT (zero-rated), shipping documentation, GJEPC (Gem & Jewellery Export Promotion Council) certificate management, and the specific export valuation requirements for gems and jewellery.

Domestic Jewellery Manufacturers Sourcing from Surat

Indian jewellery manufacturers — in Rajkot, Jaipur, Mumbai, Chennai, and other manufacturing centers — purchase polished diamonds from Surat traders for setting in jewellery. These are domestic B2B transactions requiring proper GST invoices.

The Scale of Surat's Diamond Economy

The Surat diamond industry is estimated to generate several lakh crores of economic activity annually — with individual traders sometimes handling transactions worth hundreds of crores in a single day. This per-transaction value concentration means that billing software errors are not just compliance irritants — they are potentially significant financial events.

A single HSN code error on a ₹5 crore diamond transaction invoice — which creates buyer ITC complications and GSTR-1 amendment requirements — has business consequences far exceeding what a similar error on a ₹50,000 garment invoice would create.

GST on Diamonds — Complete Rate and HSN Guide

The Complete Diamond GST Rate Reference

Natural Rough Diamonds — 0.25% GST (HSN 7102)

Unworked or simply sawn, cleaved, or bruted natural rough diamonds attract 0.25% GST — one of the lowest GST rates in the Indian tariff, reflecting the special status of rough diamonds in the gems and jewellery sector.

HSN 7102 10 — Unsorted rough diamonds
HSN 7102 21 — Industrial rough diamonds (unworked or simply sawn)
HSN 7102 31 — Non-industrial rough diamonds (unworked or simply sawn)

The 0.25% rate applies whether the rough diamond is being traded between importers and cutters or being sold in the domestic rough diamond market. This extremely low rate is important for Surat's rough diamond market — it makes domestic rough diamond trade economically viable with minimal tax burden.

Natural Polished Diamonds — 1.5% GST (HSN 7102)

Cut and polished natural diamonds — the core product of Surat's cutting and polishing industry — attract 1.5% GST:

HSN 7102 39 — Other non-industrial diamonds (polished, cut diamonds)
HSN 7102 29 — Other industrial diamonds (polished, cut)

The 1.5% rate on polished diamonds applies to loose polished diamonds traded between manufacturers, traders, and exporters within India. For export supplies (zero-rated under LUT), no GST is charged on the supply itself.

This 1.5% rate creates specific ITC dynamics — manufacturers can claim ITC on rough diamond purchases (0.25% paid as input tax) and offset against the 1.5% output tax on polished diamond sales.

Synthetic or Lab-Grown Diamonds — 1.5% GST (HSN 7104)

Lab-grown diamonds (LGD) — increasingly important in the global and domestic diamond market — fall under HSN 7104:

HSN 7104 20 — Piezo-electric quartz and other synthetic precious and semi-precious stones, unworked or simply sawn or roughly shaped
HSN 7104 90 — Other synthetic precious or semi-precious stones

Lab-grown diamonds attract 1.5% GST — the same rate as natural polished diamonds for cut and polished forms. Surat's growing lab-grown diamond cutting and trading sector faces the same billing requirements as natural diamond trading but with different import channels and different international market dynamics.

Diamond Jewellery — 3% GST (HSN 7113)

When diamonds are set in jewellery — diamond rings, necklaces, bracelets, earrings — the jewellery piece as a whole attracts 3% GST (HSN 7113). This is the domain of jewellery manufacturers and retailers rather than loose diamond traders, but Surat-based manufacturers who also produce finished jewellery need to correctly classify their finished goods at 3% versus loose polished diamonds at 1.5%.

Diamond Cutting and Polishing Services — Job Work GST

When a rough diamond principal sends rough diamonds to a Surat cutting and polishing unit for processing (job work), the cutting and polishing service is taxable:

Job work on diamonds and precious stones — 1.5% GST (SAC 9988 for manufacturing services on physical inputs owned by others)

The cutting and polishing unit charges GST on its processing fees (not on the value of the diamond being processed — that remains with the principal). The 1.5% rate on diamond job work services is relatively low, reflecting the sector's special status.

HSN Code Precision for Diamond Traders

For Surat diamond traders, HSN code precision matters more than in most other sectors because:

Rate implications are significant even at the transaction level:
A ₹10 crore rough diamond transaction at 0.25% GST generates ₹2.5 lakh in tax. The same transaction at 1.5% (wrong rate) generates ₹15 lakh — a ₹12.5 lakh error from a single HSN code mistake.

GSTR-1 HSN summary scrutiny:
The gems and jewellery sector, given its high transaction values, receives closer regulatory attention — HSN-wise transaction summaries that don't reconcile with declared values attract inquiry.

ITC implications for buyers:
Incorrect HSN codes on purchase invoices create ITC claim complications for diamond traders — since ITC claims are linked to the HSN code and tax paid on inputs.

GST Billing Challenges for Surat Diamond Traders

Challenge 1 — Extremely Low GST Rates Require Perfect Accuracy

The 0.25% and 1.5% GST rates for rough and polished diamonds create an unusual billing challenge — these rates are so low that even small percentage errors matter proportionally. Most billing software defaults assume standard rates (5%, 12%, 18%) — implementing 0.25% and 1.5% rates correctly, with proper rounding on high-value transactions, requires software specifically tested for this rate structure.

Challenge 2 — Per-Carat and Per-Unit Weight Billing

Diamond trading is unique in India in that goods are typically priced and sold per carat — a unit of weight equal to 0.2 grams. A transaction for 500 carats of polished round brilliant diamonds at ₹25,000 per carat totals ₹1.25 crore.

Billing software for Surat diamond traders must support:

• Carat as the unit of measurement (CT or CTS as UQC in the IRP's UQC list)
• Decimal carat quantities (2.57 carats, 145.83 carats)
• Per-carat pricing with total value calculation on decimal carat quantities
• Correct IRP UQC code mapping for e-invoice compliance

Generic billing software that supports only standard retail units (pieces, kilograms, metres) cannot handle carat-based diamond billing correctly.

Challenge 3 — Stone Quality and Grade Classification

Diamond pricing depends on the 4Cs — Cut, Colour, Clarity, and Carat weight. A billing system for diamond traders must support:

Colour Grade Tracking

Diamond colour grades from D (colourless) to Z (light yellow/brown) — with each grade commanding a different price per carat. A billing system must be able to identify and price different colour grades.

Clarity Grade Tracking

Internally Flawless (IF), Very Very Slightly Included (VVS1, VVS2), Very Slightly Included (VS1, VS2), Slightly Included (SI1, SI2) — different clarity grades at different price points. A transaction may involve multiple parcels of different clarity grades at different per-carat prices on the same invoice.

Cut Category

Excellent, Very Good, Good, Fair — cut grade affects price for cut diamonds.

Shape Classification

Round Brilliant, Princess, Emerald, Oval, Pear, Marquise, Cushion — different shapes command different prices per carat.

ERP Group's accounting software supports diamond product master configuration with quality parameters — enabling correct grade-specific pricing at billing.

Challenge 4 — Certificate-Based Trading

Most high-value polished diamonds are sold with GIA (Gemological Institute of America), IGI (International Gemological Institute), or HRD (Hoge Raad voor Diamant) laboratory grading certificates. Each certificated stone has a unique certificate number that serves as its identity document.

Professional billing software for Surat diamond traders should capture the certificate number on high-value individual stone invoices — creating a link between the invoice, the specific stone's grading certificate, and the buyer. This documentation is valuable for customer service, dispute resolution, and regulatory compliance.

Challenge 5 — Foreign Currency Invoicing for Export

Most Surat diamond exports are invoiced in USD — the global diamond trading currency. Export invoices must show:

• Value in USD (or other foreign currency)
• Exchange rate used for INR equivalent
• Export under LUT (zero-rated) with specific documentation
• Shipping bill reference for customs documentation
• GJEPC certificate details

Challenge 6 — High Transaction Value E-Invoicing Volume

For Surat diamond exporters and large traders above ₹5 crore turnover, e-invoicing applies to every domestic B2B supply. But unlike FMCG where e-invoice volume is driven by transaction count, diamond e-invoicing is driven by transaction value — each e-invoice may represent crores of rupees, making every IRN generation a high-stakes compliance event.

Key GST Software Features for Diamond Trading

Feature 1 — Diamond-Specific Unit of Measurement (Carats)

What This Means

Complete support for carats (CT or CTS) as the primary unit of measurement — with full decimal precision (2 or 3 decimal places for carat quantities), correct IRP UQC code mapping for e-invoice compliance, and per-carat pricing with accurate value calculation on decimal carat quantities.

Why Surat Diamond Traders Need This

A billing system without carat UQC support will either generate e-invoices with incorrect UQC codes (creating IRP rejection) or force diamond traders to use a proxy unit (KGS or NOS) that misrepresents the actual transaction unit. ERP Group maps CT/CTS to the IRP's approved UQC list — ensuring e-invoices for diamond transactions are compliant.

Feature 2 — 0.25% and 1.5% GST Rate Support With Correct Rounding

What This Means

The billing software must implement 0.25% and 1.5% GST rates accurately — with correct rounding on high-value transactions. For a ₹1 crore transaction, 0.25% GST = ₹25,000 (straightforward). But for transactions where the taxable value generates a fractional paisa in tax calculation, the rounding rule must be consistently applied.

ERP Group's accounting software correctly implements 0.25% and 1.5% rates with proper rounding — essential for diamond traders where these unusual rates are standard daily transactions.

Feature 3 — Diamond Product Master With Grade Classification

What This Means

A product catalogue structure that supports diamond classification parameters — shape, colour grade, clarity grade, cut grade, and whether the stone is natural, lab-grown, or rough — alongside the standard product attributes (HSN code, GST rate).

This allows Surat traders to create invoices that correctly identify the specific diamond goods being traded — not just "polished diamonds" but "Round Brilliant, D Colour, VS1 Clarity, Excellent Cut polished diamonds."

Feature 4 — Certificate Number Capture for Individual Stone Transactions

What This Means

For invoices involving individually certificated stones (GIA, IGI, HRD certificates), the billing software should capture the certificate number as an additional field on the invoice line — creating the stone-to-invoice linkage that professional diamond trading requires.

Feature 5 — Foreign Currency Invoice Support

What This Means

Export invoice generation in USD (or other foreign currencies) with INR equivalent calculation at the transaction exchange rate — correctly documented for GST export compliance and for bank realisation of export proceeds.

Feature 6 — E-Invoice for High-Value Diamond Supplies

What This Means

For Surat diamond traders above the ₹5 crore e-invoicing threshold — which includes most organized diamond trading firms — automatic IRN generation for every domestic B2B supply. For high-value diamond transactions, the e-invoice must correctly carry the carat-based quantity, the diamond-specific HSN code, and the 0.25% or 1.5% GST rate.

ERP Group's certified IRP API integration generates IRN for diamond invoices with all diamond-specific fields correctly populated — ensuring e-invoice compliance for Surat's high-value diamond supply transactions.

For the complete guide to e-invoice generation for businesses including high-value traders, read our guide on e-invoice generation steps in India 2026.

Rough Diamond Import and Domestic Trading Compliance

Rough Diamond Import — The Compliance Starting Point

For Surat companies importing rough diamonds — either as De Beers Sight Holders or through open market sources — the import process involves multiple compliance layers:

Customs Duty on Rough Diamond Imports

The basic customs duty on rough diamond imports is nil (0%) for diamonds — a specific exemption to support India's cutting and polishing industry's global competitiveness. However, IGST on imports applies at 0.25% on rough diamonds — payable at the port of import and available as ITC for the importing company.

Kimberley Process Certification

Natural rough diamonds traded internationally must be accompanied by a Kimberley Process Certification Scheme (KPCS) certificate — certifying that the diamonds are conflict-free. Surat importers receiving rough diamonds must maintain KP certificate records alongside their import documentation.

Rough Diamond KYC Requirements

SEBI and GJEPC have introduced KYC requirements for rough diamond trading — Know Your Client documentation for rough diamond buyers and sellers within India's diamond market. Billing software must support documentation of KYC status for rough diamond counterparty transactions.

Domestic Rough Diamond Trading

Trading Between Sight Holders and Cutters

When a Surat Sight Holder sells rough diamonds to cutting and polishing units — this is a domestic taxable supply at 0.25% GST. The invoice must correctly identify the rough diamond category (HSN 7102), the weight in carats, and the applicable 0.25% rate.

Job Work — Rough Diamond Sent to Cutters

Many diamond manufacturers operate as principals — sending rough diamonds to job working cutting and polishing units for processing. Under Section 143 of the CGST Act, goods can be sent for job work with a delivery challan without a tax invoice.

ERP Group manages the complete diamond job work compliance trail — delivery challans for rough diamonds sent to cutting units, time limit tracking (one year for return of processed diamonds), and the job work service invoice from the cutter at 1.5% GST on the cutting and polishing charges.

For a complete understanding of how job work compliance works in manufacturing supply chains, read our guide on accounting software for Dharavi manufacturers — the job work compliance principles covered there apply equally to Surat's diamond manufacturing operations.

Polished Diamond Trading and GST

The Polished Diamond Trading Day in Mahidharpura

The Mahidharpura diamond bazar is unique in India — a commercial environment where crores of rupees of diamonds change hands in face-to-face transactions with a handshake and a memo (a trading note that precedes the formal invoice). The subsequent billing and compliance workflow must convert these rapid trading transactions into GST-compliant invoices efficiently.

Polished Diamond Invoice Requirements

Every polished diamond domestic B2B invoice must include:

Mandatory Invoice Fields for Diamond Trading

• Seller's GSTIN, name, and address
• Buyer's GSTIN, name, and address
• Invoice number and date
• HSN code (7102 39 for polished natural diamonds)
• Description including shape, colour, clarity, and cut parameters
• Quantity in carats (with 2-3 decimal precision)
• Rate per carat (in INR)
• Total taxable value
• GST at 1.5% (0.75% CGST + 0.75% SGST for Gujarat-to-Gujarat intrastate)
• Or IGST at 1.5% for interstate supplies
• Total invoice value

IRN for B2B Diamond Invoices Above Threshold

For Surat diamond traders above ₹5 crore e-invoicing threshold — IRN must be generated and printed on every B2B invoice. Given the high per-invoice values in diamond trading, many Surat firms cross the e-invoicing threshold rapidly.

Diamond Trading on Consignment and Memo

The diamond trade has traditional practices — memo transactions where diamonds are sent on approval, consignment trading where goods move before formal billing. These practices create GST compliance complexity:

Memo Transactions

When diamonds are sent on memo (for examination and approval by a potential buyer), this is not a supply — no GST invoice should be generated. A delivery challan accompanies the goods. If the buyer accepts and retains the diamonds, the formal invoice is generated at that point.

ERP Group supports memo-to-invoice conversion — generating the delivery challan for memo dispatch and converting to a tax invoice when the buyer confirms acceptance.

Export GST Compliance for Surat Diamond Exporters

The Scale of Surat's Diamond Export Trade

Surat's polished diamond exports represent a major component of India's gems and jewellery export earnings — one of India's largest export categories. The export of polished diamonds connects Surat's traders to the world's diamond trading centers — Antwerp (Belgium), New York, Dubai, Hong Kong, Tel Aviv, and other markets.

Zero-Rated Export Supply Under LUT

Most Surat diamond exporters export under Letter of Undertaking (LUT) — the EXPWOP route that allows export without payment of IGST, treating the export as zero-rated.

LUT Registration and Maintenance

The annual LUT must be filed with the GST department before the financial year begins. ERP Group stores the LUT number and validity in the business configuration — applying it automatically to all export invoices as EXPWOP supply type.

Export Invoice Documentation for Diamonds

Diamond export invoices require specific documentation:

• Invoice in foreign currency (USD typically) with INR equivalent
• Export under LUT designation (EXPWOP)
• Shipping bill reference (generated at customs/ICEGATE)
• Port of export (JNPT Mumbai, or air cargo through Mumbai/Delhi)
• GJEPC Export Certificate (where applicable)
• Parcel details — number of parcels, total carat weight, per-carat value

ERP Group's export invoice module captures all required fields — generating compliant diamond export invoices with correct supply type coding, foreign currency values, and the field structure required for GJEPC and customs documentation.

GSTR-1 Reporting for Diamond Exports

Diamond exports are reported in GSTR-1 Table 6A — with shipping bill number, shipping bill date, port code, and the foreign currency equivalent converted at the exchange rate on the invoice date.

ERP Group automatically routes diamond export invoices to Table 6A in GSTR-1 preparation — with all required fields populated from the export invoice records.

Bank Realisation and FIRC for Diamond Exports

Diamond export proceeds are received in foreign currency — USD wire transfers or payments through the international banking system. Foreign Inward Remittance Certificates (FIRC) from the bank document the receipt of export payment and are important for GST refund claims on export-related expenses.

ITC Management in the Diamond Supply Chain

The ITC Structure for Diamond Traders

Input Tax on Rough Diamond Purchases (0.25%)

When a Surat cutter purchases rough diamonds, they pay 0.25% GST — this becomes ITC that offsets against 1.5% output tax on polished diamond sales.

Example:
Purchase of 1,000 carats of rough diamonds at ₹20,000 per carat = ₹2 crore purchase value
ITC on rough purchase = ₹2 crore × 0.25% = ₹50,000

Sale of 900 carats of polished diamonds at ₹45,000 per carat = ₹4.05 crore sale value
Output tax on polished sales = ₹4.05 crore × 1.5% = ₹60,750

Net tax payable = ₹60,750 - ₹50,000 = ₹10,750

ITC for Diamond Traders Who Do Not Manufacture

Pure traders who buy polished diamonds and resell polished diamonds:

• Input tax at 1.5% on purchases
• Output tax at 1.5% on sales
• Net tax position depends on value addition through trading activity

ITC on Business Expenses for Diamond Firms

Beyond diamond purchase ITC, Surat diamond firms can claim ITC on:

• Office rent and maintenance services (18% input service ITC)
• Courier and logistics services (12% or 18%)
• Professional services — CA, legal, compliance (18%)
• Office equipment and computers (18%)
• Security services for high-value diamond storage (18%)

ERP Group's accounting software tracks all eligible ITC — from both diamond purchase inputs and business service expenses — for correct GSTR-3B ITC claims.

For understanding how ITC reconciliation works and how to fix ITC mismatches in high-value trading environments, read our guide on GSTR-2A vs GSTR-2B reconciliation errors.

Diamond Inventory Management for Surat Trading Firms

The Unique Inventory Challenge of Diamond Trading

Diamond inventory management is fundamentally different from other trading categories:

Individual Stone vs Parcel Tracking

Large-scale diamond trading often involves parcels — mixed lots of diamonds of similar grade sold as a group. Parcel tracking requires recording the total weight (in carats), average quality parameters, and total value — rather than individual stone identification.

High-value individual stones (typically 1 carat and above), however, are tracked individually — each with its certificate number, specific quality parameters, and individual valuation.

Weight-Based Inventory (Carats, Not Units)

Diamond inventory is maintained in carats — not pieces. The inventory system must correctly track carat weight as the primary inventory metric alongside piece count where relevant.

Quality-Parameter Inventory Organization

A Surat diamond trader's inventory is organized by quality parameters — separate stock records for different shapes, colour grades, and clarity grades — since these quality differentiations determine price and match different buyer requirements.

ERP Group's warehouse management system manages diamond inventory with carat-based tracking, quality parameter organization, and individual stone certificate number linkage for high-value stones.

Diamond Safe and Vault Management

For Surat diamond trading firms holding significant polished diamond inventory, physical security — vault storage, individual safe management — is a paramount concern. The inventory management system should support:

Location-Based Diamond Storage Tracking

Which diamonds are in which safe or vault location — enabling quick retrieval for buyer inspection and ensuring physical inventory matches system records.

Insurance Valuation Integration

Diamond insurance valuations — typically based on current market value rather than book cost — must be maintained separately from accounting cost. ERP Group maintains market value alongside cost value for insurance documentation purposes.

Labour Compliance for Surat Diamond Cutting Units

The Workforce of Surat's Diamond Industry

Surat's diamond cutting and polishing units collectively employ hundreds of thousands of workers — skilled karigar (artisans) who have mastered the art of diamond cutting and polishing. These workers are highly skilled and often earn wages that reflect their specialized expertise.

PF and ESI for Diamond Cutting Units

For diamond cutting and polishing units with 10 or more employees (ESI threshold) and 20 or more employees (PF threshold) — statutory payroll compliance is mandatory.

PF for Diamond Industry Workers

Diamond factory workers earning above ₹15,000 basic salary — which many skilled karigar do given their specialized expertise — have PF contribution calculated on the ₹15,000 ceiling. Workers below the ceiling have PF on actual basic salary.

ESI for Diamond Factory Workers

Workers earning below ₹21,000 gross salary are covered under ESI. For diamond units where skilled karigar may earn above ₹21,000, the ESI applicability must be checked at the individual employee level each contribution period.

ERP Group's HR & Payroll software manages the complete payroll and PF/ESI compliance for Surat's diamond cutting and polishing units — including piece-rate or production-based incentive components that are common in diamond factories.

For a complete guide to PF and ESI calculation for manufacturing businesses, read our guide on PF ESI calculation formula with example.

Skill-Based Payroll for Diamond Artisans

Diamond cutting and polishing involves multiple specialized roles — cleaver, bruter, cutter, polisher, grader — each with different skill levels and compensation structures. Some workers are paid per piece (per diamond processed) while others are on fixed salaries.

ERP Group's HR & Payroll software supports mixed payroll — fixed salary for administrative staff and piece-rate production-based wages for karigar — with correct PF and ESI calculation on the actual wages regardless of the wage structure.

How ERP Group Serves Surat Diamond Traders

Purpose-Built for High-Value, Specialized Trading

ERP Group's platform serves the compliance and operational needs of Surat's diamond trading community with features specifically configured for the unique requirements of diamond trading:

Conclusion — Surat's Diamond Trade Deserves GST Software That Understands Diamonds

Surat has spent generations building the expertise and infrastructure to become the world's diamond cutting and trading capital. The GST compliance software that serves this industry must match the sophistication of the trade it supports — correctly implementing the 0.25% and 1.5% rates that no other industry regularly uses, supporting carat-based billing with decimal precision, managing the memo and job work transactions that are part of diamond trade practice, and handling export invoicing in foreign currencies for global diamond shipments.

Generic billing software — designed for standard retail and trading operations with standard rates and standard product units — is inadequate for Surat's diamond trade. ERP Group's accounting software is configured for the diamond trading reality — with carat UQC support, correct 0.25% and 1.5% rate implementation, diamond quality parameter product master, certificate number capture, export invoice with LUT compliance, and integrated warehouse management system for carat-level inventory management, CRM software for buyer and seller relationship management, HR & Payroll software for karigar payroll and statutory compliance, and POS software for counter trading operations.

Surat cuts the world's diamonds with precision and expertise. Let ERP Group bring the same precision to your GST compliance — automatically, accurately, every transaction.

Join 5,000+ Indian businesses — including Surat's gems and jewellery trading community — running complete, compliant GST operations with ERP Group.

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