It's been said that I have to
show I possess $14850 to be able to apply for PR or Novascotia nomination program.
How can I
show I do possess that amount of money?
See 'Minimum Funds Requirement' ---> http://novascotiaimmigration.com/wp-content/uploads/AppGuide-NSNP-NSDEE-2June2015-English.pdf
Some say that I have to keep that $14850 in my bank account for at least
3 months. Is that true?
Not true. However, you may be asked to explain source of funds if monies come in out of the blue and via large unexplained transfers. Below is the post ITA POF guideline from CIC ---> http://www.cic.gc.ca/english/resources/tools/perm/express/intake-complete.asp
Purpose
To confirm whether the applicant meets the low income cut-off (LICO), as assessed by amount of money they hold compared to the number of people in their family
Document requirements
The applicant should provide official letter(s) from financial institution(s) which list all current bank and investment accounts, as well as outstanding debts such as credit cards and loans. The letter(s) must be printed on the letterhead of the financial institution and must include applicant’s name, the contact information of the financial institution (address, telephone number and e-mail address), the account numbers, dates of when each account was opened and the current balance of each account as well as the average balance in the past six months. Other documents may also be requested, as necessary.
Individuals who must submit this documentation
The principal applicant
Also I don't know
WHEN exactly I have to prove this. After I have already receive ITA or before that? What if I want to apply for Novascotia Nomination Program?
If you're applying to Nova Scotia, you'll have to showcase this twice - first to the province till you get a nomination and then to CIC till you land PR.