Author name: Yuvraj Vihol

If you’ve ever raised a GST invoice for fabrication work and stared at the HSN/SAC field wondering what number goes there, you’re not alone. Contractors, fabricators, and procurement teams get this wrong constantly, and a wrong code on your invoice can mean a mismatch notice from the GST department, a blocked ITC claim, or worse, a demand with penalty. Here’s the core problem: fabrication sits on an awkward line. Sometimes it’s a supply of goods (you’re delivering a fabricated MS structure). Sometimes it’s a supply of services (you’re working on the client’s material at their site). GST treats these two scenarios completely differently, with different HSN codes, different SAC codes, and different tax rates. In this guide, you’ll find the exact HSN and SAC codes for MS fabrication work, steel fabrication, aluminium fabrication, and job work on metal structures. You’ll also understand when to use a goods code vs a service code, what 998873 means, and how to pick the right GST rate for your invoice — without calling a CA every time. I’ve spent years working with fabrication contractors, structural steel suppliers, and industrial clients navigating GST compliance. The confusion in this space is real, and most of what’s written online is either too generic or just plain outdated. What Is an HSN Code? HSN stands for Harmonised System of Nomenclature. It’s a 6-to-8-digit international product classification system that India adopted under GST. Every physical good sold in India needs one. The CBIC (Central Board of Indirect Taxes and Customs) maps GST rates to these codes. An HSN code is a standardised 6–8 digit number that classifies physical goods for GST purposes. It works by grouping products into chapters (2 digits), headings (4 digits), and sub-headings (6–8 digits) based on material composition and product type. Most commonly used on B2B invoices where the buyer claims input tax credit. SAC stands for Services Accounting Code — the equivalent classification for services under GST. Where HSN covers goods, SAC covers what you do. Fabrication work is complicated because the same job can be either. A structural MS fabricator who purchases raw MS angle, fabricates trusses in his workshop, and delivers the finished structure to the client is supplying goods. A job worker who goes to the client’s site, uses the client’s MS material, and does cutting, welding, and assembly is supplying a service. The GST rule is clear: if you supply a fabricated product, use an HSN code. If you supply fabrication as a service (including job work), use a SAC code. HSN Codes for MS and Steel Fabrication Products (Goods) When you manufacture and supply fabricated goods made of mild steel or structural steel, Chapter 73 of the HSN schedule applies. Chapter 73 covers “Articles of Iron or Steel.” The primary HSN codes for MS and steel fabrication products fall under Chapter 73 (Iron and Steel Articles). The most relevant heading is 7308, which covers structures and parts of structures made of iron or steel — including bridges, towers, columns, beams, frames, doors, and similar fabricated items. GST rate on most Chapter 73 fabricated structural items is 18%. Here are the most-used Chapter 73 HSN codes for fabricated MS and steel goods: HSN Code Description GST Rate 7308 Structures and parts of structures of iron or steel (towers, trusses, columns, frames, bridges, shuttering) 18% 7308 10 Bridges and bridge sections 18% 7308 20 Towers and lattice masts 18% 7308 30 Doors, windows, and frames 18% 7308 40 Equipment for scaffolding, shuttering, and prop systems 18% 7308 90 Other structures (sheds, columns, beams, platforms) 18% 7326 Other articles of iron or steel 18% 7214 Bars and rods of iron or non-alloy steel 18% For MS fabrication work where you supply a finished product — a fabricated shed, staircase, railing, structural column, or mezzanine floor — HSN 7308 90 is the most commonly applicable code. For MS pipes and pipe fittings fabricated and supplied, look at HSN 7304 (seamless tubes/pipes) or 7306 (welded tubes/pipes). What “MS Structure” Means for GST Classification MS (Mild Steel) structures include everything from factory sheds and storage platforms to industrial frames and staircase structures. All of these, when fabricated and supplied as finished goods, fall under HSN 7308. The GST rate of 18% applies across the board. There is no concessional rate for MS structural work when supplied as goods. SAC Code for Fabrication Work as a Service (998873 Explained) Here’s where most people get confused. If you’re not supplying fabricated goods but instead doing fabrication on someone else’s material, you’re providing a service. GST classifies this as “Manufacturing Services on Physical Inputs Owned by Others” — what used to be called job work. SAC code 998873 covers “treatment and coating of metals and machining services,” which under the broader GST framework for manufacturing services covers metal fabrication work done as a service on materials supplied by the client. The applicable GST rate is 18%. This code applies when a fabricator works on material owned by the principal manufacturer or client. The full SAC hierarchy looks like this: SAC Code Description GST Rate 9988 Manufacturing services on physical inputs owned by others 18% 998871 Structural metal product manufacturing services 18% 998872 Fabricated metal product manufacturing services 18% 998873 Treatment and coating of metals and machining services 18% 998874 Cutlery, hand tool, and general hardware manufacturing services 18% SAC 998871 is the most directly applicable code for structural MS fabrication services — making it the correct choice for most contractors doing job work on iron/steel structures. SAC 998873 specifically applies when the work involves surface treatment, galvanizing, powder coating, or machining as part of the fabrication process. When to Use 998871 vs 998873 Use 998871 when your scope of work is: cutting, drilling, welding, assembling, and erecting steel structures from material supplied by the client. Use 998873 when your work is primarily: blasting, priming, painting, galvanizing, powder coating, heat treatment, or precision machining of metal components. Many fabrication contracts involve both. In that case, the principal supply

Over 4 crore Indian taxpayers will pay zero income tax in FY 2025-26 — and most of them don’t fully understand why. Section 87A of the Income Tax Act 1961 is the reason. Many salaried individuals either miss this rebate entirely or misapply it, ending up paying tax they don’t owe. The calculation is not complicated, but the rules differ by tax regime, income level, and the type of income you earn — and getting those details wrong costs money. In this guide, you’ll learn exactly How Is Section 87A Rebate Calculated step by step, which tax regime gives you more benefit, and how marginal relief protects you if your income just crosses the threshold — without wading through dense legal language. As a tax practitioner with experience filing returns for salaried and self-employed individuals across India, the most common filing mistake I see is taxpayers missing the 87A rebate claim on their ITR. What Is Section 87A of the Income Tax Act 1961? Section 87A sits inside Chapter VIII of the Income Tax Act 1961, which deals with rebates and reliefs. The government introduced it in FY 2013-14 to reduce tax burden on low-to-middle income resident individuals. What is Section 87A Rebate? Section 87A is a direct rebate on your final income tax liability – not a deduction from income. It works by subtracting the rebate amount from the tax calculated on your taxable income, before the 4% health and education cess is applied. It applies to resident individuals whose net taxable income falls within the prescribed limit for their chosen tax regime. The key distinction: a deduction reduces your taxable income; the 87A rebate reduces the tax you owe after income is already computed. This makes it one of the most powerful provisions in the Act for eligible taxpayers. Who Is Eligible for Tax Rebate Under Section 87A? Eligibility under Section 87A has two firm conditions. Both must be satisfied simultaneously. Condition 1 — Residential Status: You must be a resident individual under Section 6 of the Income Tax Act. HUFs, firms, companies, and non-resident Indians cannot claim this rebate. Condition 2 — Taxable Income Threshold: Tax Regime Income Limit (FY 2025-26) Maximum Rebate New Tax Regime Up to ₹12,00,000 ₹60,000 Old Tax Regime Up to ₹5,00,000 ₹12,500 The income limit applies to net taxable income — the figure you arrive at after all eligible deductions, not your gross salary or CTC. What Counts as Taxable Income? Your taxable income includes salary, rental income, business/profession income, and most capital gains. However, special rate capital gains — particularly long-term capital gains on listed equity under Section 112A — are excluded from the rebate calculation in the old regime. Under the new regime, Budget 2025 has aligned the treatment, but taxpayers with significant LTCG should verify their specific position with a CA before filing. How Is Section 87A Rebate Calculated — Step-by-Step The calculation follows a fixed sequence. Skipping or reordering steps leads to errors. Step 1: Compute Gross Total Income Add all income from all heads — salary (after standard deduction), house property, business/profession, capital gains, and other sources. Step 2: Apply Deductions Under the old regime: subtract deductions under Chapter VI-A (80C, 80D, 80G, etc.). Under the new regime: limited deductions apply (standard deduction of ₹75,000 for salaried individuals, employer NPS contribution under 80CCD(2)). Step 3: Arrive at Net Taxable Income This is the figure after Step 2. Compare it against the applicable threshold. If it exceeds the limit, Section 87A is not available — stop here. Step 4: Calculate Tax as Per Slab Rates Apply the income tax slab rates for your regime to your net taxable income. Step 5: Apply the 87A Rebate Subtract the rebate from the tax calculated in Step 4. The rebate is the lower of: This ensures your tax liability does not go below zero. Step 6: Add Cess Apply 4% health and education cess on the tax after the rebate. If tax after rebate is zero, cess is also zero. Calculation Example — New Regime (FY 2025-26) Scenario: Salaried individual, Gross Salary ₹12,75,000 Step Amount Gross Salary ₹12,75,000 Less: Standard Deduction ₹75,000 Net Taxable Income ₹12,00,000 Tax on ₹12,00,000 (as per new regime slabs) ₹60,000 Less: Rebate u/s 87A ₹60,000 Tax after rebate ₹0 Add: 4% Cess ₹0 Total Tax Payable ₹0 Calculation Example — Old Regime (FY 2025-26) Scenario: Individual with taxable income ₹4,80,000 after 80C deductions Step Amount Net Taxable Income ₹4,80,000 Tax on ₹4,80,000 (as per old regime slabs) ₹11,500 Less: Rebate u/s 87A ₹11,500 Tax after rebate ₹0 Add: 4% Cess ₹0 Total Tax Payable ₹0 Note: The rebate is capped at actual tax payable. Since ₹11,500 is less than the ₹12,500 maximum, the full tax is offset. Section 87A Under New Regime vs Old Regime — Key Differences The 2025 Union Budget expanded the Section 87A benefit substantially under the new regime. Here is a direct comparison for FY 2025-26: Parameter Old Tax Regime New Tax Regime Income threshold for rebate ₹5,00,000 ₹12,00,000 Maximum rebate amount ₹12,500 ₹60,000 Effective zero-tax income Up to ₹5 lakh Up to ₹12 lakh Applicable to salaried Yes Yes (+ ₹75,000 std deduction) Applicable to self-employed Yes Yes For most salaried individuals with income up to ₹12 lakh, the new regime now offers a substantially better outcome. A salaried person earning ₹12.75 lakh gross pays zero tax under the new regime after the standard deduction and the 87A rebate. Under the old regime, the same person would need to claim over ₹2.75 lakh in 80C and other deductions to achieve a comparable result. Marginal Relief Under Section 87A — When Income Slightly Exceeds ₹12 Lakh Budget 2025 also provides marginal relief to taxpayers whose income crosses the rebate threshold by a small amount. Without this relief, an individual earning ₹12,00,001 would owe tax on the entire ₹12,00,001 — a jump from zero to roughly ₹60,000 in tax, triggered by a single rupee of additional income. Marginal relief ensures the additional

GST (Goods and Services Tax) is India’s unified indirect tax on supply of goods and services, replacing VAT, service tax, and 17 other levies. In 2026, GST compliance involves registration (if turnover > ₹40L / ₹20L for services), monthly/quarterly return filing (GSTR-1, GSTR-3B), input tax credit (ITC) reconciliation via GSTR-2B, mandatory e-invoicing for businesses with turnover > ₹5 crore, and annual returns (GSTR-9/9C). Non-compliance attracts penalties up to 100% of tax dues plus interest at 18% per annum. 1. Why GST Still Confuses Indian Businesses in 2026 On 1 July 2017, India replaced a patchwork of 17 indirect taxes — Central Excise, VAT, Service Tax, CST, Octroi, and more — with a single, destination-based Goods and Services Tax. Nine years later, GST has stabilised, but it has never become simple. In 2026, Indian businesses face a more demanding GST environment than ever: mandatory e-invoicing for crores of businesses, AI-powered GST department scrutiny of return mismatches, blocked ITC for non-reconciled purchases, and new sections under the Income Tax Act 2025 that interact directly with GST turnover. Staying compliant is not just about filing returns on time — it is about building an integrated finance function where GST, income tax, TDS, and ESG reporting all speak to each other. This pillar guide is the most comprehensive GST resource for Indian businesses in 2026. It covers every aspect of GST — from registration and rate classification to e-invoicing, ITC reconciliation, department audits, and niche scenarios like crypto taxation, ESOP perquisites, and succession through private trusts. The GST Framework at a Glance Component Detail Full Form Goods and Services Tax Implemented 1 July 2017 Type Dual GST — CGST (Central) + SGST (State) for intra-state; IGST for inter-state Governing Law CGST Act 2017, IGST Act 2017, UTGST Act 2017, GST Compensation Cess Act 2017 Rate Slabs 0%, 5%, 12%, 18%, 28% (+ Cess on sin goods) Administering Body GST Council (Finance Ministers of Centre + all States) Returns Portal www.gst.gov.in E-Invoice Portal einvoice1.gst.gov.in 2. GST Registration — Who Must Register, Thresholds & Process 2.1 Registration Thresholds (FY 2025-26) Category Threshold States Goods supplier — General states ₹40 lakh annual turnover All states except Special Category Goods supplier — Special Category states ₹20 lakh annual turnover NE states, Uttarakhand, HP, J&K, Sikkim Service provider — General states ₹20 lakh annual turnover All general states Service provider — Special Category states ₹10 lakh annual turnover NE states etc. E-commerce operators / sellers on e-commerce No threshold — mandatory registration All India Inter-state supplier (any turnover) No threshold — mandatory All India Casual taxable person / NRI taxable person No threshold Temporary registration Reverse Charge Mechanism (RCM) recipient No threshold (for RCM supplies) All India 2.2 Voluntary Registration Businesses below the threshold can register voluntarily — and often should. Voluntary registration enables ITC claims on purchases, participation in government tenders (many require GSTIN), and credibility with corporate buyers who prefer GST-registered vendors. 2.3 Registration Process — Step by Step Important: From 2023, Aadhaar authentication is mandatory for new registrations. Failure to authenticate results in physical verification before GSTIN is granted. Ensure registered mobile is linked to Aadhaar before applying. 2.4 Composition Scheme — For Small Businesses Type of Business Turnover Limit GST Rate Payable Restriction Goods trader / manufacturer Up to ₹1.5 crore 1% of turnover Cannot supply inter-state or to SEZ Restaurants (not serving alcohol) Up to ₹1.5 crore 5% of turnover No ITC available Service providers Up to ₹50 lakh 6% of turnover (3% CGST+3% SGST) Cannot issue tax invoice Mixed supplier (goods + services) Up to ₹1.5 crore 1% Service ≤ 10% of turnover or ₹5L 3. GST Rate Structure — Slabs, HSN/SAC Codes & Exemptions 3.1 GST Rate Slabs Slab What It Covers Examples 0% (Exempt) Essential goods and services Fresh fruits, vegetables, milk, eggs, health services, education 5% Basic necessities, mass consumption Packaged food, medicines, economy hotel rooms (<₹1000/night), transport 12% Processed goods, some services Butter, cheese, computers, business class air travel, works contracts 18% Most goods and services (standard rate) IT services, financial services, restaurants (AC), most manufactured goods 28% Luxury, sin goods Automobiles, aerated drinks, tobacco, cement, large ACs, casinos 28% + Cess Special goods Luxury cars (+ 1-22% cess), pan masala, cigarettes, betting 3.2 HSN and SAC Codes — Mandatory Classification Every GST invoice must carry an HSN (Harmonised System of Nomenclature) code for goods or an SAC (Services Accounting Code) for services. The number of digits required depends on turnover: Annual Turnover HSN Digits Required Mandatory on Invoice? Up to ₹5 crore 4-digit HSN Yes — for B2B invoices; optional for B2C Above ₹5 crore 6-digit HSN Yes — for all invoices (B2B and B2C) Notified goods (any turnover) 8-digit HSN Yes (e.g. pharmaceutical products) Tip: Use the HSN search tool at gst.gov.in/masters/hsn to verify correct codes. Wrong HSN classification is one of the most common triggers for GST department notices. An incorrect HSN can result in wrong rate application, mismatch with e-invoice data, and denial of ITC to buyers. 3.3 Key GST Exemptions to Know 4. GST Returns — Complete Filing Calendar & Procedures 4.1 Return Types and Due Dates Return Who Files Frequency Due Date GSTR-1 All regular taxpayers (outward supplies) Monthly 11th of following month GSTR-1A Amendment to GSTR-1 Before GSTR-3B Before 3B filing date IFF (Invoice Furnishing Facility) QRMP taxpayers Monthly (Months 1 & 2 of quarter) 13th of following month GSTR-3B All regular taxpayers (summary + tax payment) Monthly 20th (Turnover >5Cr) / 22nd or 24th (others) GSTR-2B Auto-generated ITC statement Monthly 14th of following month (generated) GSTR-4 Composition scheme taxpayers Annual 30th April GSTR-5 Non-resident taxable persons Monthly 20th of following month GSTR-6 Input Service Distributors (ISD) Monthly 13th of following month GSTR-7 TDS deductors (u/s 51) Monthly 10th of following month GSTR-8 E-commerce operators (TCS u/s 52) Monthly 10th of following month GSTR-9 All regular taxpayers Annual 31st December of following FY GSTR-9C Taxpayers with turnover > ₹5 crore Annual (self-certified) 31st December of following FY GSTR-10 Cancelled/surrendered registrations Once

If you want to know how to compute income tax on salary for the fiscal year 2025-26, this guide will walk you through the entire process step by step.. Most salaried employees in India know how much tax their employer deducts each month. What they often do not have is a clear picture of why that number is what it is — or whether it has been computed correctly. Income tax on salary follows a defined process under the Income Tax Act 1961. Once the steps are clear, the calculation is straightforward. This guide walks through each one using a single real-world example so the numbers stay grounded throughout. If you prefer to skip the manual steps, you can use the free Income Tax Calculator on Finance and Tax Guide to compare both regimes instantly. How to Calculate Income Tax on Salary: What You Need to Know First Before working through the numbers, it helps to understand what counts as salary income for income tax purposes. Gross salary is broader than just the monthly figure credited to your bank account. Under the provisions of income tax law, it includes every monetary benefit received from an employer during the financial year. A typical salary structure for a salaried employee in India includes: Some components reduce your tax burden directly; others do not. Understanding which is which is the first step in accurate tax calculation. Real Example Used in This Guide: Arjun, Software Engineer, Pune To keep the calculation concrete, this guide follows one person through every step. Arjun is 34 years old, works as a software engineer at a mid-sized IT company in Pune, and earns the following annual income for FY 2025-26: Salary Component Annual Amount (Rs.) Basic Salary 7,80,000 House Rent Allowance (HRA) 3,12,000 Leave Travel Allowance (LTA) 24,000 Special Allowance 1,44,000 Annual Bonus 72,000 Gross Salary 13,32,000 Arjun lives in a rented flat in Pune and pays Rs. 22,000 per month in rent (Rs. 2,64,000 annually). He has an active home loan on a property in his hometown and makes regular investments in PPF and ELSS. Step 1: Choose the Tax Regime The first decision in how to calculate income tax on salary is choosing the right tax regime. For FY 2025-26, two options are available under the Income Tax Act 1961. For a full side-by-side breakdown, see the New vs Old Tax Regime comparison guide on this site. New Tax Regime — Income Tax Slabs FY 2025-26 The new tax regime is now the default under Section 115BAC. It offers lower income tax slabs but does not allow most common deductions — no HRA exemption, no LTA, no Section 80C, and no home loan interest deduction under Section 24(b). New Tax Regime — Income Tax Slabs for FY 2025-26: Annual Taxable Income Tax Rate Up to Rs. 4,00,000 Nil Rs. 4,00,001 – Rs. 8,00,000 5% Rs. 8,00,001 – Rs. 12,00,000 10% Rs. 12,00,001 – Rs. 16,00,000 15% Rs. 16,00,001 – Rs. 20,00,000 20% Rs. 20,00,001 – Rs. 24,00,000 25% Above Rs. 24,00,000 30% What the new regime does allow for salaried employees: Old Tax Regime — Income Tax Slabs FY 2025-26 The old tax regime carries higher slab rates but permits a range of deductions and exemptions. Taxpayers who claim HRA, have a home loan, invest in 80C instruments, or pay health insurance premiums often find the old regime more efficient despite the higher base rates. Old Tax Regime — Income Tax Slabs for FY 2025-26 (Age below 60): Annual Taxable Income Tax Rate Up to Rs. 2,50,000 Nil Rs. 2,50,001 – Rs. 5,00,000 5% Rs. 5,00,001 – Rs. 10,00,000 20% Above Rs. 10,00,000 30% What the old regime allows: The right choice depends entirely on the numbers. Neither regime is universally better — the one that results in lower tax for a specific income and deduction profile is the right one for that year. Step 2: Compute Your Taxable Income Taxable income is gross salary minus all eligible deductions and exemptions. The figure differs under each regime because the old regime permits more reductions. Taxable Income Under the New Tax Regime Under the new regime, only the standard deduction applies for most salaried employees. Taxable Income Under the Old Tax Regime The old regime involves more steps. Calculating the HRA Exemption: House rent allowance exemption is the lowest of these three figures: The exempt HRA amount is Rs. 1,86,000. Deductions Summary (Old Regime): Deduction Applicable Section Amount (Rs.) Standard Deduction — 50,000 HRA Exemption — 1,86,000 LTA Exemption — 24,000 PPF + ELSS Investment Section 80C 1,50,000 Health Insurance Premium Section 80D 25,000 Home Loan Interest Section 24(b) 2,00,000 Total Deductions 6,35,000 Step 3: Apply the Income Tax Slabs and Calculate Tax With taxable income established for both regimes, the next step is applying the slab rates to calculate the base tax amount. New Tax Regime Tax Calculation (Taxable Income: ₹12,57,000) Income Slab Rate Tax (Rs.) Up to Rs. 4,00,000 Nil 0 Rs. 4,00,001 – Rs. 8,00,000 5% 20,000 Rs. 8,00,001 – Rs. 12,00,000 10% 40,000 Rs. 12,00,001 – Rs. 12,57,000 15% 8,550 Total Tax Before Cess 68,550 Arjun’s taxable income of Rs. 12,57,000 exceeds Rs. 12,00,000, so the Section 87A rebate is not available here under the new regime. The rebate applies only when taxable income is up to Rs. 12,00,000. Old Tax Regime Tax Calculation (Taxable Income: ₹6,97,000) Income Slab Rate Tax (Rs.) Up to Rs. 2,50,000 Nil 0 Rs. 2,50,001 – Rs. 5,00,000 5% 12,500 Rs. 5,00,001 – Rs. 6,97,000 20% 39,400 Total Tax Before Cess 51,900 Arjun’s taxable income of Rs. 6,97,000 is above Rs. 5,00,000, so the Section 87A rebate under the old regime — which applies only up to Rs. 5,00,000 — is not available either. Final Comparison New Regime Old Regime Gross Salary Rs. 13,32,000 Rs. 13,32,000 Total Deductions Rs. 75,000 Rs. 6,35,000 Taxable Income Rs. 12,57,000 Rs. 6,97,000 Base Tax Rs. 68,550 Rs. 51,900 Section 87A Rebate Nil Nil 4% Cess Rs. 2,742 Rs. 2,076 Final Tax