Original Passport with at least 6 months validity and minimum 3 blank pages + passport number of all old passports if previously traveled to Singapore.

Singapore Visa Application form.

2 recent colour photographs (Photo Specification).

Personal Covering letter (For Employed - Plain paper/ For Self-Employed – Company Letterhead).

If you are employed - Last 3 months salary slips & Employment ID Card.
If you are self-employed - Business Registration License / MOA / Partnership deed.
If you are retired – Proof of retirement like pension book, statement etc.
If you are a student - school / College / Institute ID Card.
If you are a minor - No Objection Certificate from the parents / non-accompanying parent on a Rs. 100/- stamp paper & ID proof of parent like passport or PAN card.
For Singapore Visit Visa - If you are visiting friend or relative - Invitation letter or Letter of Introduction (LOI) / V39A form.
If sponsored - Sponsorship letter
For Singapore Business Visa - Invitation letter from the host Company stating purpose of trip, business details etc. and covering letter from Indian company on company letterhead.
Confirmed return flight tickets and Hotel reservation.