Distance

There is no fix formula. Such cases are solved selectively.
Nowadays Competition is high so one should have master degree in order to get handsome salary.
I suggest you to go for Master degree after completing your Bachelor's degree.
As per official website of DU SOL,Placement cell is active and average package that offered last year was 2.2LPA,So Prepare well Go through your past academics.Delhi University School of Open Learning is a popular destination for correspondence education and is acceptable for higher studies or jobs as well.
I may suggest you to pick CA, CS or ICWA simultaneously with B.Com so that you have ample opportunities.

Here is the list you can choose any one out of these.
NORTHERN REGIONAllahabad university, AllahabadAwadesh pratap singh university, rewaBarkatullah vishwavidhyalaya, BhopalMahatma Gandhi gramodaya vishwavidyala, chitrakut, satna, madhya pradeshUniversity of delhiGB Pant University of Agriculture and Technology, pantnagarGuru ghasidas university, bilaspurHimachal Pradesh university, shimlaJamia milia islamia, jamia nagar, new delhiUniversity of jammuJiwaji university, GwaliorUniversity of KashmirKurukshetra universityMaharishi dayanand university, rohtakPunjab university, chandigarhPunjab agriculture university, LudhianaPunjabi university, PatialaDevi ahilya vishwavidyalaya, indoreGuru jambheshwar university, hisarRani dingvati vishwavidyalaya, JabalpurMadhya Pradesh bhoj open university, BhopalUP rajarishi tandon open university, Allahabad
WESTERN REGIONBirla institute of technology and sciences, pilaniInternational institute of population sciences, MumbaiJadavpur University, CalcuttaGujrat vidhyapeeth, ahmedabadShivaji University, KolhapurTilak Maharashtra vidhayapeeth, puneUtkal University, bhubaneshwarDr. Hari Singh Gour Vishwavidhyalaya, sagarGujrat vidhyapeeth, ahmedabadSNDT womens University, Mumbai
EASTERN REGIONBerhanpur University,berhanpurPatna University, patnaBabasaheb bhimrao ambedkar bihar University, muzzafarpurUniversity of burdwan, bindwanGauhati University, guwahatiLalit narayan mithila University, darbhangaNorth eastern hill University, shillongSambalpur University, sambalpurVidyasagar University, mindnaporeNetaji subhash open university, Kolkata
SOUTHERN UNIVERSITY
Allagappa University, vishkhapatnamBangalore University, BangaloreBharatisadan University, tiruchirapalliCentral institute of English and foreign languages, hydrabadJawaharlal Nehru technology university, hydrabadPotti sreeramalu telagu University, hydrabadManonmaniam sundaranar University, mysoreTamil nadu agriculture university, CoimbatoreOsmania university, hydrabadUniversity of mysore, mysoreMother Teresa womens university, ChennaiMadurai kamraj university, MaduraiKakatiya University, Warangal
The university won't matter, as Ph.D will be through distance mode only.