This guide explains how MSME classification works in practice: which figures the Udyam system uses, how the MSME limits from 2025 change your category, and why the category matters when customers pay late. Exports are left out of turnover, and every GSTIN under the same PAN is added together, so your category can differ from what your headline sales suggest.
Which figures decide your MSME category?
Two figures decide it: investment in plant and machinery or equipment, taken from your income tax return for the previous year, and turnover, taken from your income tax and GST data with exports removed. All GSTINs registered under one PAN count as a single enterprise, and their figures are added together.
The micro, small and medium enterprise criteria come from notification S.O. 2119(E) of 26 June 2020, with the limits amended by S.O. 1364(E). Points that trip people up:
- Investment means plant and machinery as defined in the Income-tax Rules, covering all tangible assets other than land and building and furniture and fittings. It is linked to your previous year's ITR.
- New enterprises without an ITR use the purchase invoice value, excluding GST, on a self-declared basis. This relaxation ends after 31 March of the financial year in which the first ITR is filed.
- Turnover excludes exports of goods, services or both, and is linked to the Income-tax Act or CGST Act data and your GSTIN.
- One enterprise, one registration. All units with GSTINs under the same PAN are seen together, and only the aggregate counts.
The Udyam portal pulls PAN and GST-linked figures on investment and turnover from government databases, so the category you declare should match your returns.
Worked examples: micro, small or medium?
The category is the smallest one whose investment limit and turnover limit you both meet. Here are four made-up businesses run through the MSME classification calculator above, using the limits from 1 April 2025.
| Business | Investment | Turnover counted | Category | What decided it |
|---|---|---|---|---|
| Bluepeak Foods Private Limited, manufacturer | ₹3.2 crore | ₹9 crore | Small | Investment above ₹2.5 crore |
| Coastline Textiles LLP, exporter with ₹38 crore sales of which ₹30 crore exports | ₹1.5 crore | ₹8 crore | Micro | Exports excluded |
| Northwind Consulting, two GSTINs with ₹6 crore and ₹5 crore | ₹40 lakh | ₹11 crore | Small | Turnover added across GSTINs |
| Redleaf Packaging, manufacturer | ₹2 crore | ₹8 crore | Micro | Both within micro limits |
Example. Northwind Consulting has offices in Maharashtra and Karnataka, each with its own GSTIN under one PAN. Each office alone is within the ₹10 crore Udyam turnover limit for micro enterprises. Together they have ₹11 crore of turnover, so the enterprise is small. It cannot hold two Udyam registrations to stay micro.
MSME limits 2025: what changed on 1 April 2025
S.O. 1364(E), dated 21 March 2025, raised every limit from 1 April 2025. Investment limits went up 2.5 times and turnover limits doubled. Many businesses that were small under the 2020 limits are now micro, and many medium enterprises are now small.
Two of the businesses in the table above show the effect. Coastline Textiles and Redleaf Packaging each had ₹1.5 crore or more of investment, above the old ₹1 crore micro limit, so both were small until 31 March 2025. Under the new limits both are micro.
The new limits apply to existing registrations too. Under paragraph 8 of S.O. 2119(E), your classification is updated from the information you file and from government sources such as ITR and GST returns, and a communication is sent to you when your status changes.
Why your MSME category matters when customers pay late
Only micro and small suppliers with Udyam registration get the late-payment protection of the MSMED Act 2006. Under section 15, the buyer must pay by the date agreed in writing, at most 45 days after acceptance, or within 15 days if nothing is agreed. A late buyer owes compound interest with monthly rests at three times the RBI bank rate (section 16). Medium enterprises are not covered.
Three things follow:
- Interest. Micro and small suppliers can claim this interest, and can refer disputes to the Micro and Small Enterprises Facilitation Council (MSEFC) of their state, which is meant to decide within 90 days.
- The buyer's tax deduction. A buyer can deduct an amount owed to a micro or small enterprise beyond the time limit in section 15 of the MSMED Act only in the year it is actually paid. This is section 37(2)(g) of the Income-tax Act 2025, earlier section 43B(h) of the 1961 Act, which applied from assessment year 2024-25 (FY 2023-24). Paying before the return due date does not save the deduction.
- Your invoices. Quote your Udyam Registration Number on invoices and purchase orders, so buyers know the rule applies. Buyers can check the number's format with the Udyam verification tool and then verify it on the Udyam portal.
For buyers, this is why the classification of each supplier matters at year end. A medium enterprise falls outside the rule, although under S.O. 4926(E) an enterprise that moves up keeps the non-tax benefits of its earlier category for three years from the change. Check each supplier's current status and when it changed.
How to register on Udyam and keep your category current
Udyam registration is free, paperless and based on self-declaration on the Udyam Registration portal. No documents are uploaded. You get a permanent Udyam Registration Number and an e-certificate with a dynamic QR code, and there is no renewal.
- Open the portal and choose "For New Entrepreneurs who are not Registered yet as Micro, Small & Medium".
- Enter the Aadhaar number of the proprietor, managing partner or karta. For a company, LLP, co-operative society, society or trust, the authorised signatory gives the Aadhaar number with the organisation's PAN and GSTIN.
- Enter the enterprise details. PAN, and GSTIN where GST registration applies, are needed from 1 April 2021.
- List every activity, manufacturing or services, in the same registration.
- Submit and download the certificate.
Each year, update the information on the portal, including the ITR and GST return details for the previous financial year. Failing to update within the period the portal specifies can lead to suspension of your status. If you are not sure whether GST applies, check with the GST registration checker first.
Common mistakes in MSME classification
Most wrong categories come from using the wrong figure, not the wrong limit. Watch for these:
- Using the cost or gross block of machinery instead of the written-down value in your ITR.
- Counting land, buildings, furniture or fittings as investment.
- Leaving export turnover in the figure, which can push an exporter into a higher category than it should be.
- Splitting units under one PAN into separate registrations. No enterprise may file more than one Udyam registration.
- Missing the annual update, which risks suspension.
- Misstating figures. Intentional misrepresentation attracts a penalty under section 27 of the MSMED Act 2006.
- Paying anyone a "government fee". The portal charges nothing, and it states that no private agency is authorised to do MSME registration. Registration is made on the official portal with the Aadhaar number of the proprietor, managing partner, karta or authorised signatory.
If your business is new, check your GSTIN details and PAN before you start, since the portal matches them against government records.
How Ofin can help
We check your investment and turnover figures, pick the right NIC codes for every activity and guide you through filing on the official Udyam portal, so the certificate shows the right category from the start. Udyam registration support costs ₹999. We can also help you set up invoice terms that point buyers to the 45-day rule.
