[wig]

Accha Mr. Severus GB je 40% interest nay ae info apne khothi pilen? at first apne jokon 40% bollen tokhon aeta verify kore nie!! but general idea theka bujaselam it will be for one year. But eakhon apne jokhon bollen 40% in 1 week!! amar to mathae guriea galo..!!(bole ke)
so start searching...!!
And Here is some info i got from GB website:

Low Interest Rates
Government of Bangladesh has fixed interest rate for government-run microcredit programmes at 11 per cent at flat rate. It amounts to about 22 per cent at declining basis. Grameen Bank's interest rate is lower than government rate.

There are four interest rates for loans from Grameen Bank : 20% (declining basis) for income generating loans, 8% for housing loans, 5% for student loans, and 0% (interest-free) loans for Struggling Members (beggars). All interests are simple interest, calculated on declining balance method. This means, if a borrower takes an income-generating loan of say, Tk 1,000, and pays back the entire amount within a year in weekly instalments, she'll pay a total amount of Tk 1,100, i.e. Tk 1,000 as principal, plus Tk 100 as interest for the year, equivalent to 10% flat rate.

Abar apne bolen apnar information kothi theke palen!! Nake nejar mon gora info dea manus ke biv-vranot kortesan!!!

Ar eakta Info pelam, Grameen Bank ar Malik asole Dr. Yunus na!! He is just the Founder. And does not get any interest from this bank!!!
This info i got from Wikipedia

Ownership and other facts

One unusual feature of the Grameen Bank is that it is owned by the poor borrowers of the bank, most of whom are women. Of the total equity of the bank, the borrowers own 94%, and the remaining 6% is owned by the Government of Bangladesh. Some other facts about the bank, as of August 2006 are:[5]

* Total number of borrowers is 6.67 million, and 97% of those are women (3,123,802 members in 2003 [6])
* The Bank has 2,247 branches (as of May, 2006) covering 72,096 villages, with a total staff of over 18,795. (43,681 villages in 2003 [6])
* Loan recovery rate is 98.85% (repayment rate was 95% in 1998[7])
* Since inception, total loans distributed amounts to Tk 290.03 billion (US$ 5.72 billion). Out of this, Tk 258.16 billion (US$ 5.07 billion) has been repaid.