Pro-Rata ITC: Claim Tax Credit on Mixed Business Supplies

Introduction

Say you run a business that sells both taxable goods and exempt services. Or maybe you run a shop that offers both regular products and some services that are exempt from GST. Here's the problem: you pay GST on the materials you buy, but some of that GST is linked to sales on which you cannot charge GST. So the question becomes—how much of the GST you paid can you actually claim back? That's what pro-rata input tax credit, or pro-rata ITC, answers. This article explains the rule in plain words, with examples you can use today.

How Pro-Rata ITC Works When You Have Exempt and Taxable Sales

Think of it like this: you buy ten pencils for ₹100 with GST included. You plan to sell some pencils at full GST rates and give some away free (or sell them in a way that is exempt from GST). The GST you paid is linked to all ten pencils, but only the ones you sell at full rates let you claim the tax back. The ones you sell exempt or give away—the tax paid on those is lost to you.

Pro-rata ITC is the rule that lets you split the GST you paid based on what you actually sold at taxable rates versus exempt rates. The GST department says: if 80% of your sales are taxable, you can claim ITC on 80% of your input costs. The other 20% is your cost, not the government's.

Here is a real example from a typical India business. Ramesh runs a coaching centre. He charges students for tuition classes (exempt from GST). But he also sells printed study guides with GST at 5%. When Ramesh buys rent, electricity, and printer ink, the GST is mixed in. Some of that GST is tied to his exempt tuition income. Some is tied to his taxable study guide sales. Ramesh has to split the ITC. He calculates: 60% of my income is from tuition (exempt), 40% from study guides (taxable). So Ramesh can claim ITC on only 40% of the GST he paid on supplies.

This also applies to businesses that mix supplies across states or between goods and services. A shopkeeper who sells groceries (zero-rated goods, no GST to charge but ITC allowed) alongside restaurant meals (subject to GST) also uses pro-rata ITC. Or a freelancer who makes some invoices exempt (say, freelance teaching) and others taxable (say, software development). The rule is the same: split by the value of supplies.

The formula is simple in concept. Take all the supplies you made in the month. Add up the value of taxable supplies only—not exempt ones. Divide taxable supplies by total supplies. That is your pro-rata percentage. Apply that to the GST you paid on inputs. What you get is your claimable ITC. The rest stays with you as a business cost.

A Simple Example

Let's walk through Priya's story. Priya runs a small event management business. She books venues (exempt service), but also sells printed invitation cards (taxable at 5% GST). In January, her sales were:

• Venue booking services: ₹1,00,000 (exempt—no GST charged)
• Printed invitation cards: ₹25,000 (taxable—5% GST charged)
• Total sales: ₹1,25,000

In the same month, Priya bought printing supplies, stationery, and office rent for ₹40,000 plus 18% GST = ₹47,200 total.

Now, how much ITC can she claim?

Step 1: Work out the pro-rata percentage. Taxable supplies = ₹25,000 Total supplies = ₹1,25,000 Pro-rata % = (₹25,000 ÷ ₹1,25,000) × 100 = 20%

Step 2: Calculate claimable ITC. GST paid on inputs = ₹47,200 − ₹40,000 = ₹7,200 Claimable ITC = ₹7,200 × 20% = ₹1,440

Step 3: Non-claimable portion. Non-claimable ITC = ₹7,200 − ₹1,440 = ₹5,760

So Priya can claim ₹1,440 as input credit. The ₹5,760 is absorbed as a business cost because it is tied to her exempt venue-booking income. Next month, she will do the same calculation with her new figures.

Who This Applies to

Pro-rata ITC is relevant for:

• Businesses that make both taxable and exempt supplies: Any shop, service provider, or online seller offering a mix.
• Tuition centres and coaching classes: These charge GST on some services (printed material, online courses) but are exempt on core tuition.
• Event organisers: Venues are often exempt, but decorations or printed materials are taxable.
• Medical practitioners with pharmacy arms: Consultation may be exempt, but medicines sold separately are taxable.
• E-commerce and aggregator platforms: They may facilitate both taxable and exempt services.
• Skip this if: Your business is 100% taxable or 100% exempt—no split needed.

Next step: If you run a mixed-supply business, sit down with your monthly sales figures and calculate your pro-rata percentage. Use the same method every month.

Check Your GST Position

Pro-rata ITC applies once you are GST-registered. If your turnover is below ₹20 lakh (for services) or ₹40 lakh (for goods) in a financial year, you may not need to register unless you cross these thresholds or are in a special category state (₹10 lakh limit). Visit https://www.gsthelp.in to check your registration requirement free of charge. The tool will help you understand if pro-rata ITC even applies to your business yet.

Conclusion

Pro-rata ITC is not hard. It simply means: if part of your business is exempt from GST, you cannot claim ITC on the input costs linked to that exempt part. Calculate what percentage of your sales are taxable, apply that percentage to the GST you paid on inputs, and that is your claimable credit. The rest is your cost. Do this calculation every month when you file your returns. Remember, this is informational only—confirm the current rules on the GST portal at gst.gov.in or speak with a qualified CA before you file.