RTO Tax Calculator Sikkim 2026

Vehicle Registration Process in Sikkim — Step by Step

Vehicle registration in Sikkim is administered by the Sikkim Transport Department through three Regional Transport Offices located in Gangtok (SK 01), Namchi (SK 02) and Mangan (SK 03), running on the national VAHAN platform. Non-transport vehicles (private cars and two-wheelers) pay a one-time motor vehicle tax at registration — there is no annual road tax for private vehicles in Sikkim. Tax for a new vehicle is payable at the time of registration.

1. Buy the vehicle and get a temporary registration. The dealer issues a temporary registration (application in Form 20) at the time of purchase. A temporary registration is valid for a maximum of one month (Rule 47, Central Motor Vehicles Rules, 1989), within which the permanent registration must be completed.
2. Submit the registration application. Form 20 (application for registration), Form 21 (sale certificate from the dealer/manufacturer), Form 22 (certificate of roadworthiness), valid insurance, and proof of address and identity are filed — normally by the dealer for new vehicles. For Sikkimese residents, the Sikkim Subject Certificate (SSC) serves as a primary identity document.
3. Pay road tax and registration fee. Road tax is a one-time payment calculated on the ex-showroom price. The registration fee under Rule 81 of CMVR 1989 is ₹300 for a motorcycle and ₹600 for a non-transport light motor vehicle. HSRP is ₹400 for four-wheelers and ₹200 for two-wheelers.
4. Registration number is allotted. On verification of documents and tax payment, VAHAN allots a permanent number in the SK-XX-XXXX format and the RC is issued to the owner.

Required Documents for Registration

• Form 20 (duly filled application form)
• Form 21 (Sale Certificate from authorised dealer)
• Form 22 (Certificate of Roadworthiness)
• Insurance Certificate (Third-party or Comprehensive)
• Address Proof (Aadhaar, Sikkim Subject Certificate, Voter ID, Utility Bill)
• Identity Proof (Aadhaar, PAN, Driving Licence)
• Original Invoice and Delivery Challan
• PUC Certificate
• Passport-size photographs (2 copies)

Sikkim RTO Offices and District Codes

All Sikkim registration numbers carry the SK prefix followed by a two-digit district code:

Note: Codes are as per the standard RTO code list for Sikkim; verify your office at the Sikkim Transport Department before visiting.

How Sikkim Road Tax is Calculated

Formula: Ex-showroom price of the vehicle × applicable slab rate % = one-time road tax payable. Sikkim uses the same slab structure for petrol, diesel and CNG vehicles — the fuel does not change the rate. The slab rate applies to the full ex-showroom price of the vehicle.

Example: A car priced at ₹10 lakh (ex-showroom) falls in the ₹2 lakh–2 crore slab → 4% → Road tax = ₹40,000. Add ₹600 registration fee and ₹400 HSRP, and total RTO charges come to ₹41,000.

The official slab structure for non-transport vehicles in Sikkim (one-time tax):

• Cars up to ₹2 lakh: 1%
• Cars ₹2 lakh – ₹2 crore: 4%
• Cars above ₹2 crore: 5%
• Two-wheelers up to ₹1 lakh: 3%
• Two-wheelers above ₹1 lakh: 4%
• Electric vehicles: 1% (reduced rate, all categories)

EV Policy: What Sikkim EV Buyers Save

Unlike most states, Sikkim does not fully exempt electric vehicles from road tax. Instead, EVs get a reduced rate of 1% of the ex-showroom price — across two-wheelers, three-wheelers and four-wheelers — compared with the standard rates of 3–4% (or up to 5% for premium cars).

Example: an electric car priced at ₹15 lakh pays 1% = ₹15,000 road tax (instead of ₹60,000 at the 4% standard rate), plus ₹600 registration and ₹400 HSRP — a saving of ₹45,000 over a petrol car of the same price. An electric two-wheeler priced at ₹1.5 lakh pays ₹1,500 instead of ₹6,000.

Note: The reduced rate applies to vehicles purchased and registered in Sikkim. Always confirm the current notification with the Sikkim Transport Department before you finalise a purchase.

Where to Pay Sikkim Road Tax Online

You can pay motor vehicle tax online on the official portals:

1. VAHAN (vahan.parivahan.gov.in): Enter the vehicle registration number → Online Services → Pay Vehicle Tax → enter the last 5 digits of the chassis number and validate → generate OTP (sent to the registered mobile number) → update insurance details → review the fee panel → pay. A payment receipt is generated immediately.
2. State services: Sikkim runs on the national VAHAN platform, and most transport services are available online through the Parivahan portal.

Sources

• Government of Sikkim — Transport Department: sikkim.gov.in
• Parivahan Sewa — Pay Vehicle Tax Online and Temporary Registration: vahan.parivahan.gov.in
• Sikkim RTO code list (reference): Wikipedia