There are two BITs in Nepal and students regularly apply to one thinking it is the other. Tribhuvan University runs one through public campuses, cheap and scarce. Purbanchal University runs another through private affiliated colleges, more expensive and far easier to get into. They share a name and a length and very little else about the experience of getting in.
The one-line version: Purbanchal's BIT is the realistic route if your entrance rank will not reach a TU public campus, and the thing to check before you count on it is the mathematics condition in the eligibility rules.
What is BIT at Purbanchal University?
A four-year, eight-semester bachelor's degree under Purbanchal University's Faculty of Science and Technology, carrying roughly 140 credit hours. The content is what you would expect from an applied IT degree — programming, databases, networking, web and software engineering, with supporting mathematics and management — and it is taught almost entirely at private colleges affiliated to the university rather than at campuses the university runs itself.
That affiliation model is the whole character of the degree. It means more colleges, more seats, more locations and more competition between colleges for students — and it means the fee is a private-college fee rather than a public-campus one.
Who can apply?
Twelve years of schooling in any stream, which is the headline and the reason the degree is popular with management and humanities students. But read the next condition before you rely on it.
Published eligibility commonly requires at least one mathematics subject of 100 marks at the +2 level, alongside a minimum grade in each subject of classes 11 and 12 and a CGPA threshold. Some sources also describe a second-division route. This is the clause that catches students who took a +2 with no substantial mathematics and assumed "any stream" meant any subjects — it does not, and it is worth confirming with the specific college before you build a plan around it.
"Any stream" is not the same as any subjects. Check the mathematics condition first.
How admission works
There is an entrance examination, set by the university, and passing it is mandatory. Colleges then admit from a merit list built on those results. So there is a real filter — this is not an open-enrolment degree — but the seat pressure is nothing like the competition for a Tribhuvan University public campus, where a few dozen subsidised places absorb thousands of applicants.
The practical consequence: a rank that would leave you unplaced in the TU system can comfortably secure a place here. That is a genuine advantage if the alternative is losing a year, and a genuine cost if you are paying private fees for four years to get it.
Purbanchal's BIT compared with Tribhuvan's
Neither is the better degree. They are the same qualification bought on different terms, and the right one depends entirely on which seat you can actually get and what your family can fund across four years.
Where is it taught?
Across roughly thirty institutions, with about half of them in Kathmandu district according to the aggregators — though counts differ depending on how a source scopes them, and colleges gain and lose affiliation between cycles. Take the current list from Purbanchal University rather than from a directory, including this page.
Who it suits, and who it does not
It suits a student who wants to work in software, did not come through a science +2 or did not clear a TU entrance, and whose family can fund a private college. For that student it is a sensible, unglamorous route to exactly the same junior developer jobs that CSIT and BCA graduates apply for — because employers hiring juniors read portfolios, not university names.
It suits you less if you have a realistic shot at a TU public campus, where the same four years cost a fraction. It also suits you less if the plan is a master's abroad, where a BSc reads more cleanly against a computer science requirement than a BIT does from either university.
The short answer
Purbanchal's BIT is the accessible version of a degree whose Tribhuvan equivalent is cheap but scarce. Confirm the mathematics condition against your own +2 marksheet before anything else, sit the entrance, and compare the colleges on total four-year cost rather than on how they describe themselves. If a TU public campus is within your reach, take that instead — the degree is the same and the bill is not.