Running a business often means you have multiple branches, offices, or units across India. Some services—like audit fees, advertising, software subscriptions, or consultancy—are used centrally but benefit all your branches.
So, here’s the question: How do you fairly distribute the tax credit (ITC) from these services to each branch?
The answer under GST is through an Input Service Distributor (ISD).
Let’s break it down in simple terms.
🌱 What is an Input Service Distributor (ISD)?
An ISD is basically an office of a company that receives invoices for input services and then distributes the Input Tax Credit (ITC) to its other branches/units.
👉 Example:
Your head office in Jaipur pays for advertising services worth ₹10,00,000 plus GST. This advertising benefits your Delhi, Mumbai, and Bangalore branches too. Instead of keeping all the ITC at Jaipur, the head office (as ISD) distributes the ITC to the respective branches proportionately.
📝 When Do You Need ISD Registration?
You must register as an ISD if:
You have a head office or central office receiving invoices for services that are used by multiple branches. You want to distribute ITC to branches/units registered under the same PAN.
⚠️ Important:
ISD registration is separate from your normal GST registration. Even if you already have GST registration as a supplier, you need a distinct registration for ISD.
📌 Registration Requirements
Apply online through GST REG-01 form on GST portal. Choose “Input Service Distributor” as your type of registration. Documents needed are similar to GST registration (PAN, proof of business, address, authorization letter, etc.). Separate GSTIN will be issued for ISD.
📊 How Does Credit Distribution Work?
Eligible ITC only can be distributed. Credit is distributed on a pro-rata basis (turnover ratio) to branches that actually use the services. The distribution is done using ISD invoices.
👉 Example:
Head office gets consultancy bill with GST of ₹90,000. Branch A turnover = ₹2 Cr, Branch B turnover = ₹1 Cr (total = ₹3 Cr). Distribution: Branch A gets ITC of ₹60,000 (2/3rd), Branch B gets ₹30,000 (1/3rd).
✅ Compliance for ISD
Issue ISD Invoices – For credit distribution to branches. File Monthly Returns (GSTR-6) – Mandatory, due by the 13th of every month. Reconcile ITC – Ensure ITC distributed matches invoices uploaded by suppliers. Maintain Proper Records – Keep track of invoices received and ITC distributed.
⚖️ Key Points to Remember
ISD mechanism is only for input services, not goods. ITC must be distributed only to GST-registered branches under the same PAN. If service is used exclusively by one branch, ITC should go only to that branch. Distribution must be through GST portal and proper ISD invoices.
💡 Why ISD Matters
Avoids tax credit blockage at head office. Ensures fair distribution of credit to revenue-generating branches. Helps in smooth GST compliance and avoids disputes during audit.
✨ Final Thought
If your business has multiple branches and you’re receiving centralised service invoices, ISD registration is not just an option—it’s a must. It ensures every branch gets its rightful share of ITC, helping you optimise cash flow and stay GST-compliant.
Many startups and growing businesses overlook ISD until audits raise questions. Getting registered early and maintaining compliance can save you from unnecessary headaches later.