ISI Mark vs CRS vs FMCS: Which BIS Certification Scheme Applies to You?

Every BIS scheme exists for the same reason: to make sure products sold in India meet a defined Indian Standard for safety, quality, or performance before they reach a consumer. All three require testing at a BIS-recognised lab, and all three result in a mark or registration number you're legally required to display on the product.

Where they differ is in who they apply to, how long they take, and what kind of ongoing compliance they demand.

The ISI Mark is the oldest and most recognisable of the three — that red/black triangular logo you've seen on cables, LPG cylinders, cement, and helmets since childhood. It applies to Indian manufacturers producing goods under mandatory Indian Standards (there are 700+ product categories covered).

Getting an ISI licence involves a factory audit, sample testing at a BIS-approved lab, and — this is the part people underestimate — ongoing surveillance. BIS can inspect your factory and pull market samples even after you're licensed, so quality control has to be a continuous discipline, not a one-time exercise.

Typical timeline: 4–6 months for a first-time applicant, largely driven by how quickly your factory passes the initial audit and your samples clear testing.

CRS (Compulsory Registration Scheme) is narrower in scope but applies to almost every electronics or IT hardware company selling into India — laptops, mobile phones, power banks, LED products, and similar items fall under this. Unlike ISI, CRS doesn't require a factory audit; instead, it's built around third-party lab testing of your product against the relevant Indian Standard.

Both Indian and foreign manufacturers can apply, but a foreign manufacturer must appoint an Authorised Indian Representative (AIR) to file on their behalf and take responsibility for post-market compliance.

Typical timeline: 6–10 weeks once testing is complete — noticeably faster than ISI because there's no factory audit stage.

FMCS is essentially the export/import equivalent of ISI Mark, built specifically for manufacturers based outside India who want to sell products under the mandatory ISI-marked categories into the Indian market. Instead of registering a domestic factory, BIS audits your overseas manufacturing facility directly (or via an authorised inspection body) and issues a licence tied to that plant.

If you're a foreign manufacturer wondering whether you need CRS or FMCS, the deciding factor is the product category: electronics/IT falls under CRS, while everything else under the mandatory ISI list (cement, steel, toys, pressure cookers, etc.) falls under FMCS.

Typical timeline: 4–8 months, since it involves coordinating a factory audit across borders.

Start by identifying which Indian Standard your product falls under — this single fact determines everything else. If you're an Indian manufacturer of a mandatory-standard product, it's ISI. If you make electronics/IT hardware anywhere in the world, it's CRS. If you manufacture any other mandatory-category product outside India, it's FMCS.

The most common mistake we see is companies applying for the wrong scheme entirely and losing months in the process — always confirm the applicable standard and scheme before you start testing, since each scheme uses different labs and documentation.

BIS also runs Scheme-X, a simplified, self-declaration-based track available for a select list of lower-risk product categories. Instead of BIS testing your product before certification (as with ISI and FMCS), you self-declare conformity based on your own or an accredited lab's test report, and BIS verifies that declaration through surveillance after the certificate is already granted — often cutting approval time down to 1–3 weeks.

It's not available for every product, and it shifts more responsibility onto the manufacturer for the accuracy of what's declared, so it's worth checking eligibility rather than assuming it applies just because it's the fastest option on paper.

For ISI and FMCS, BIS (or an empanelled inspection agency for overseas FMCS applicants) sends an officer to physically inspect your manufacturing unit — checking machinery capacity, raw-material sourcing records, in-house quality-control processes, and staff competence, not just the finished product. Auditors also verify your factory can consistently reproduce the tested sample's quality at production scale, since a one-off sample passing lab testing doesn't guarantee every batch will.

This audit isn't a one-time event either — BIS conducts ongoing surveillance visits (often unannounced) after the licence is granted, along with independent market sample testing, so the quality bar has to hold up continuously, not just on inspection day.