1.      Who is eligible to be a recipient of zakat?
In Holy Qur’an, Allah said: "
As-sadaqaat (here means zakat) 
are only for the fuqara (poor), 
and al-masaakin (the needy) 
and those employed to collect (the funds) 
and to attract the hearts of those who have been inclined (toward Islam), 
and (to free) captives, and for those in debt, and for Allah's cause (i.e. for those fighting in a holy battle) 
and for the wayfarer (a traveler who is cut off from everything); 
a duty imposed by Allah. " (Taubah; 9/60)
It is possible to explain the eight categories of people mentioned in the verse as:
- The
 poor (Faqir/Fuqara): Those without sufficient means of  livelihood to 
meet their basic necessities. For instance, those who,  although may 
have a job, a house and a car, but whose income is below  the minimum 
requirement (nisab).
- The needy (Miskeen): Those without any 
means of livelihood and  material possessions and dependent on others to
 meet their most basic  needs such as food and shelter.
- Employees
 of the zakat, even if they are rich, they are allowed to  take from the
 zakat money limited to an amount to take care of  themselves and their 
family. 
- Sympathizers are people whose hearts are expected to 
inclined to  Islam or whose believe to Islam is expected to increase can
 be given  gifts from the Zakat money.
- Slaves and captives: In 
the days that the system of slavery existed,  this meant that a person 
who wants to free himself from the shackles of  slavery should be given 
Zakat so that he may release his neck from  bondage by giving money to 
his master. 
- Debtor is person who is in debt and does not have 
financial capital  or property exceeding the nisab amount. Such persons 
should hold  priority status when giving Zakat money compared to the 
poor without any  debts.
- Those who work for Allah’s cause, 
either to spread the truth or to  defend their country for Allah’s sake 
but also in need for meeting their  basic needs deserve zakat.
- Travelers
 are people who travels to another country or a foreign  place  for 
noble purposes such as pilgrimage or study and have  difficulty in  
meeting their needs. They might have living means, but  they can still  
receive zakat if they have trouble in accessing their  means during  
travelling. 
2.      What is the designated minimum amount of wealth for a Muslim to be liable for paying zakat?
Every
 Muslim adult possessing the designated minimal amount of wealth  
(called nisab) for a full cycle of a lunar year after meeting his/her  
basic needs and paying off any debt must, as a matter of worship,  
satisfy the duty of the zakat. The basic needs include: a house,  
household furniture, means of transportation/a car, clothing, tools,  
equipment, books etc. necessary to make his/her livelihood, food  
expenses for one year. Should a person’s extra income or possessions  
except for his/her debts, if there is any, reaches the nisab amount and 
 remains that way for one full year, that person must pay zakat.
Nisab amount: Zakat
 is due on certain types of  wealth. There is a different nisab rate for
 every type. Some of the  zakat-due types of wealth, their nisab rates 
and zakat calculated  accordingly are as follows:
Gold: If the amount of gold possessed exceeds 85 grams, one-fortieth of such wealth must be given away as zakat.
Silver: If the amount of silver exceeds 595 grams, again one-fortieth of it must be given as zakat.
Nisab
 on cash funds is also calculated as gold and/or silver. Since  silver 
has lost its value significantly in today’s market, it would be  
reasonable to calculate them based on gold-value 
 
3.      Is paying one’s taxes regarded as zakat? 
Zakat
 must not be confused with taxes. It is unacceptable for a  person 
regarded as wealthy according to religious terms to avoid paying  zakat 
by thinking “I am paying my taxes”. There are essential  differences 
between zakat and taxes in terms of legal source, amount,  purpose and 
means of utilization.
4.      If a
 person possesses the nisab  amount of money or wealth, but his/her 
basic needs have not been met  yet, does s/he need to pay zakat?
When
 the cost of basic needs are deducted from the money or wealth  
possessed, if the remaining wealth does not reach the nisab amount, then
  that person does not need to pay zakat.
5.      Is money saved for debt payment subjected to zakat?
There
 is no zakat due for the savings dedicated to the payment of an  
existing debt. A person who has zakat payments due from previous years  
is also regarded as a debtor. If s/he has less than nisab amount of  
money/wealth left after paying the zakat due for previous years, then  
s/he is not liable for zakat payment in current year. 
6.      Should
 a person who leases his/her  own house to someone else and rents 
another place for himself/herself  pay zakat for the house s/he owns?
If
 the rental income of his/her own house exceeds the rent s/he pays  and 
the excess amount of income reaches the nisab amount and remains so  for
 one lunar year, then yes, s/he is liable for paying zakat on this.
7.      Does a wife with no other income need to pay zakat for her jewelry?
Thus,
 if a woman or man has in her/his ownership gold or silver in  the form 
of decorative items, household items or personal jewelry the  value of 
which reaches the appointed Nisab amount on its own or together  with 
other wealth possessed, then s/he will be required to pay Zakat.
8.      Which one of the spouses is required to satisfy the duty of zakat (almsgiving) and qurban (sacrifice)? 
If
 both spouses have personal incomes and their wealth exceeds the  nisab 
amount, then each of them is required to satisfy the duty of zakat  and 
qurban individually.
9.      We are paying some of our zakat to our employees who are in need of financial aid, is this alright?
It is completely acceptable to pay zakat to one’s employees.
People
 who are not eligible for receiving zakat are: Those who  possess more 
than the nisab amount of wealth after their basic needs are  met 
(explained in article 2 above), non-Muslims (except for those who  are 
included to the group of “sympathizers”), one’s parents,  
grandparents…etc. and his/her offspring, their children…etc., one’s own 
 spouse and descendants of Prophet Mohammad (p.b.u.h).
People 
except for those stated above are eligible for receiving  zakat. The 
most acceptable way to pay zakat is to give alms first to  one’s 
siblings, then to their children, then uncles and aunts and their  
children on one’s father’s side, after that, aunts and uncles on one’s  
mother’s side and their children and then to the rest of one’s  
relatives. A person’s neighbors, colleagues and other acquaintances  
follow on the list of priority.
10.     Can zakat be sent to poor people in far-away places via aid organizations? 
When
 it comes to paying one’s zakat what matters is “tamlik”  (transfer of 
ownership), that is, to transfer the wealth to one of the 8  categories 
of recipients listed in the Quran verse. However, in certain  
situations, a person may be unable to reach the beneficiaries who need  
the zakat the most. In such situations, it is possible and permissible  
to send one’s zakat to beneficiaries in far-away places through a system
  of agency (wakeel). Should one want to transfer his/her zakat to the  
poor and the needy in a far-away place, s/he submits his/her zakat to a 
 person or institution by assigning that person or institution as an  
agent (wakeel). The agent transfers the alms to a poor and needy person 
 in the designated place. Thus, the duty of zakat becomes satisfied by  
meeting the “tamlik” requirement.     
11.  We
 calculate out zakat in the beginning  of each year and try to pay it in
 installments to appropriate people as  we go throughout the year, is 
this method alright? 
Yes, it is. Zakat can be paid at 
once or in installments to the poor  who is in serious need of 
assistance, such as having to pay a debt.
12.  What types of assets are zakatable?
Gold
 and silver, trading goods, buried wealth or treasures, oils and  
minerals, livestock, land produce are zakatable assets. In addition to  
these, in today’s world, equity and cash are also deemed as zakatable  
assets. The conditions that should be met are; the person should hold  
the complete ownership of these, wealth should be equal to or more than 
 the nisab amount after funds needed for basic needs are deducted and  
should be held in person’s ownership for at least one lunar year.
13.     How do we calculate zakat?
Zakat can simply be calculated like this:
A
 tradesman  calculates his/her stock (of whatever he may be trading)  at
 the end of each year, adds up the cash and assets he holds. After  
deducting his debts, if he has an equivalent of more than 85 grams of  
gold, then he pays 2,5% of that wealth as zakat.
- Zakat For Islamic Schools and Orphanages 
Question.)I
  used to give zakat to Orphanage and madarasas. Somebody told me that  
the zakat money cannot be used to construct the orphanage or madarasa  
building structure, and can only be used for its operating costs, so you
  should not give zakat to these organizations if the zakat is being 
used  for constructing the orphanage or madarasas buildings. Please 
explain  this. Also, how would one know for what purpose your zakat 
money was  used by these organizations and whether you zakat was 
properly  disbursed. [Sabir]
Answer.) Zakat must be given to the poor and needy. Zakat cannot be used directly for constructing a madrassa or an orphanage.
You
 should give out your zakat personally to the poor and needy who  are 
eligible to accept zakat. If you choose to give your zakat to an  
organization make sure that there are competent Ulama there who are well
  versed in the laws of Zakat. You should not give your zakat to an  
organization where there are no reliable Ulama and the organization is  
not well versed in the laws of zakat. If they did not discharge your  
zakat according to Shariah, your zakat obligation will not be fulfilled.
  And Allah Ta'ala Knows Best
Source: 
http://www.albalagh.net/qa/zakat_questionz.shtml
            http://www.ihh.org.tr