Sikkim Permits Explained: ILP, PAP and Protected Area Permits for Tourists
Here is the short version. Indian tourists do not need any permit just to enter Sikkim, but they do need a Protected Area Permit (PAP) for restricted zones like Nathula Pass, Tsomgo Lake and North Sikkim (Gurudongmar, Lachen, Lachung). Foreign nationals need an Inner Line Permit (ILP), also called a Restricted Area Permit, simply to set foot in the state, plus a separate PAP for those same protected areas, and a few border spots are closed to them completely.
The good news is that none of this is expensive or complicated. The ILP for foreigners is free, valid for 30 days, and for border areas the paperwork is almost always arranged by your driver or tour operator because those zones legally require a Sikkim Tourism registered agent. As a Gangtok based, family run operator, sorting permits is simply part of what we do on every trip.
This guide covers who needs which permit, the documents to carry, where and how to get them, and the foreigner specific restrictions that trip up a lot of visitors. Read it once and you will not be caught out at a checkpost.
ILP vs PAP: The Two Permits at a Glance
Sikkim has two separate permit systems, and knowing which one applies to you is half the battle.
- Inner Line Permit (ILP / RAP): This is only for foreign nationals, and it is what allows a non Indian passport holder to enter Sikkim at all. Indians do not need it.
- Protected Area Permit (PAP): This applies to both Indians and foreigners, but only for specific restricted areas near the international border, such as Tsomgo Lake, Nathula, Yumthang and the whole of North Sikkim.
So an Indian family driving up from Siliguri needs nothing to reach Gangtok, and only picks up PAPs for the border sights they want to see. A foreign couple needs the ILP first to enter, and then PAPs on top for the same border sights. Two different starting points, one common permit for the high, sensitive areas.
Do Indian Tourists Need a Permit for Sikkim?
Not to enter. Sikkim is a full Indian state, so Indian citizens can travel freely to Gangtok, Pelling, Ravangla, Namchi and most of the popular circuit without any entry permit at all.
What Indians do need is a Protected Area Permit for the border areas: Tsomgo (Changu) Lake and Nathula in East Sikkim, and the North Sikkim run to Lachen, Lachung, Yumthang and Gurudongmar. These permits are issued by the Sikkim Tourism department and the local police or Army checkpost, usually through your registered operator a day before travel.
The fees are nominal. Tsomgo and North Sikkim permits are inexpensive, and Nathula carries a small government charge of roughly 200 rupees per person. You will need to hand over photocopies of a photo ID and a couple of passport size photos, which we will cover below.
The Inner Line Permit for Foreigners: How and Where
Every foreign national needs an Inner Line Permit to enter Sikkim. It is free of cost, valid for 30 days, and extendable within the state.
You can obtain it in several ways:
- Online through the Sikkim government portal, which is now the primary route, as physical issuance at land checkposts is being phased out. Secure your approval before you reach the border.
- At the entry checkposts at Rangpo and Melli, which endorse permits roughly 8:00 am to 7:30 pm, provided your online approval is already in hand.
- At Sikkim House in New Delhi or Kolkata, or the Sikkim Tourism office in Siliguri.
- At the point of arrival if you fly in, on the strength of a valid Indian visa.
Carry your passport, your Indian visa, photocopies of both, and two passport size photographs. One important catch: for the protected border areas beyond, solo foreign travellers are not permitted. Foreigners must travel in a group of at least two and go through a Sikkim Tourism registered travel agent, which is exactly the kind of arrangement we handle locally.
Which Permit for Nathula, Tsomgo and Gurudongmar
These three are the headline sights, and each has its own rules and its own thin air.
Tsomgo (Changu) Lake sits at 12,313 ft (3,753 m), about 40 km and a 1.5 to 2 hour drive from Gangtok. It needs a PAP, and it is open to both Indians and foreigners.
Nathula Pass is the old India China trade pass at roughly 14,140 ft (4,310 m). It needs a PAP and is open only Wednesday to Sunday, staying closed on Monday and Tuesday. Crucially, Nathula is open to Indian nationals only.
Gurudongmar Lake is the big one, a sacred high altitude lake in North Sikkim at about 17,800 ft (5,430 m), only around 5 km from the Chinese border and roughly 175 to 190 km from Gangtok. You cannot do it in a day; you overnight at Lachen (about 67 km from the lake) on a PAP based North Sikkim permit. At that altitude, take the acclimatisation seriously, hydrate, and do not rush the climb from Lachen.
Where Foreigners Cannot Go (and Where They Can)
This is the part most guides gloss over, so here it is plainly. Several border areas are off limits to foreign nationals for security reasons, no matter their country or paperwork.
Closed to foreigners:
- Nathula Pass
- Gurudongmar Lake (foreigners are stopped short, around the Thangu and Lachen stretch)
- Zuluk and the Old Silk Route in East Sikkim
Open to foreigners with a PAP, a guide and a group of two or more:
- Tsomgo (Changu) Lake, up to the lake only, not onward to Baba Mandir or Nathula
- Yumthang Valley in North Sikkim, and Zero Point (Yumesamdong), which is issued to foreigners too, though access to the higher point can be closed on short notice, so confirm the current rule when you book
If you are a foreign visitor with your heart set on Gurudongmar or Nathula, it is better to know now and plan a route that plays to what you can actually see, which is still spectacular.
Documents You Need to Carry
Keep these ready before you travel, and carry a few spare photocopies; checkposts always want their own set.
For Indian nationals:
- An original photo ID such as a Voter ID, passport or driving licence. Note that PAN card is not accepted, and Aadhaar has not been accepted for Protected Area Permits since September 2019.
- Two passport size photographs.
For foreign nationals:
- Original passport and valid Indian visa, plus photocopies of both.
- Passport size photographs.
A small practical tip from years of doing this: carry more copies than you think you need, and keep them in a dry folder. On the North Sikkim and Nathula runs there are multiple checkposts, and each one keeps a copy.
When to Go and Seasonal Closures
Permits only matter if the roads are open, so timing counts. The most reliable windows are March to June and October to December. Spring brings the rhododendron and primula blooms, especially around Yumthang, while October and November give the clearest mountain views.
Avoid July to September if you can. That is the peak monsoon, and Sikkim's steep hillsides are prone to landslides that shut roads, particularly the North Sikkim route to Lachen and Lachung. It happens most years, and it can strand travellers for a day or more.
Winter, from December to February, is beautiful for snow around Tsomgo and Nathula, but high passes and North Sikkim roads can close on short notice after heavy snowfall. Whatever the season, we watch road and weather conditions daily and adjust the plan rather than push into a risky stretch.
Planning It Without the Paperwork Headache
Once you know the pattern it is genuinely simple: Indians pick up PAPs for the border sights, foreigners add an ILP to enter first, and the truly sensitive spots stay Indian only. The one part that is not do it yourself is the border area PAP, which by law goes through a registered local operator, and that is where a Gangtok based team earns its keep.
On our trips we handle the permits, the checkpost stops and the timing around Nathula's closed days and North Sikkim overnights, so you are just enjoying the drive. A classic loop like our Gangtok, Lachen and Lachung tour folds Tsomgo, the North Sikkim valleys and the Gurudongmar attempt into one clean run, with the paperwork already sorted before you arrive.
If you are starting to sketch out dates, send them across on WhatsApp along with who is travelling, Indian or foreign passport, and we will tell you honestly which permits apply and what is realistic for that season. No pressure, just straight local advice to help you plan well.
Frequently asked questions
Do Indian citizens need a permit to visit Sikkim?
No permit is needed just to enter Sikkim. Indians only need a Protected Area Permit (PAP) for restricted border areas like Tsomgo Lake, Nathula and North Sikkim (Lachen, Lachung, Gurudongmar), usually arranged through a registered operator a day in advance.
Can foreigners visit Nathula Pass and Gurudongmar Lake?
No. Nathula Pass and Gurudongmar Lake are closed to all foreign nationals for security reasons, as is Zuluk on the Old Silk Route. Foreigners can visit Tsomgo Lake (up to the lake only) and Yumthang Valley, and Zero Point where permitted, all on a PAP.
Which days is Nathula Pass open?
Nathula Pass is open Wednesday to Sunday and closed on Monday and Tuesday. It sits at about 14,140 ft (4,310 m) and requires a Protected Area Permit. Only Indian nationals are allowed to visit.
Is an Aadhaar card accepted for Sikkim permits?
No. Aadhaar has not been accepted for Protected Area Permits since September 2019, and PAN card is not accepted either. Carry a Voter ID, passport or driving licence, plus two passport size photographs.
How much do Sikkim permits cost?
The Inner Line Permit for foreigners is free and valid for 30 days. Protected Area Permits for Indians are inexpensive, with Nathula carrying a small government charge of around 200 rupees per person.
Can a solo foreign tourist get a permit for protected areas?
No. For protected border areas, foreigners must travel in a group of at least two and apply through a Sikkim Tourism registered travel agent. Solo foreign travellers are not permitted into these zones.
Planning this trip?
Wongyal Travels is a Gangtok-based team with 11+ years arranging Sikkim and Darjeeling trips. Send your dates and group size for a practical plan and quote.
