EUIN, or Employee Unique Identification Number, is a unique code assigned by AMFI to the individual employee or salesperson of a mutual fund distributor who advises an investor. It works alongside the distributor’s ARN, with the ARN identifying the entity and the EUIN identifying the specific person who gave the advice. Its purpose is to affix accountability and prevent mis-selling in mutual fund transactions.

The ARN (AMFI Registration Number) identifies the distributor entity and is the code against which trail commission is paid. The EUIN (Employee Unique Identification Number) identifies the specific individual advisor within that entity and is used only for tracking accountability, not commission. The ARN is organisation-level; the EUIN is individual-level and stays with the person through their PAN even if they change employers.

No, EUIN is mandatory only for advised transactions that initiate something new: fresh purchases, switches, and new SIP, STP, or dividend sweep registrations. It is not required for ongoing SIP or STP instalments, redemptions, dividend reinvestments, or SWP registration. For genuine execution-only transactions where no advice was given, the EUIN can be left blank if the investor signs the execution-only declaration on the form.

To get an EUIN, you must first clear the NISM Series V-A certification. An employee’s EUIN application is then initiated by their ARN-holding employer with AMFI, with a fee of ₹1,500 plus GST. Individual ARN holders and sole proprietors usually receive their EUIN automatically along with their ARN, without a separate fee. AMFI issues the EUIN after verification, and the card can be downloaded online.

If a wrong EUIN is mentioned, the transaction may still process, but the accountability trail points to the wrong individual, which creates a compliance and audit problem for the distributor. If no EUIN is quoted on an advised transaction without the execution-only declaration signed, it is treated as a gap. The correct practice is to quote the actual advising individual’s EUIN, or obtain the signed execution-only declaration when no advice was given.