From JewFAQ:
http://www.jewfaq.org/tzedakah.htm
The Meaning of the Word "Tzedakah""Tzedakah" is the Hebrew word for the acts that we call "charity" in English: giving aid, assistance and money to the poor and needy or to other worthy causes. However, the nature of tzedakah is very different from the idea of charity. The word "charity" suggests benevolence and generosity, a magnanimous act by the wealthy and powerful for the benefit of the poor and needy. The word "tzedakah" is derived from the Hebrew root Tzadei-Dalet-Qof, meaning righteousness, justice or fairness. In Judaism, giving to the poor is not viewed as a generous, magnanimous act; it is simply an act of justice and righteousness, the performance of a duty, giving the poor their due.
The Obligation of TzedakahGiving to the poor is an obligation in Judaism, a duty that cannot be forsaken even by those who are themselves in need. Some sages have said that tzedakah is the highest of all commandments, equal to all of them combined, and that a person who does not perform tzedakah is equivalent to an idol worshipper. This is probably hyperbole, but it illustrates the importance of tzedakah in Jewish thought. Tzedakah is one of the three acts that gain us forgiveness from our sins. The High Holiday liturgy repeatedly states that G-d has inscribed a judgment against all who have sinned, but teshuvah (repentance), tefilah (prayer) and tzedakah can alleviate the decree. See Days of Awe.
According to Jewish law, we are required to give one-tenth of our income to the poor. This is generally interpreted as one-tenth of our net income after payment of taxes. Taxes themselves do not fulfill our obligation to give tzedakah, even though a significant portion of tax revenues in America and many other countries are used to provide for the poor and needy. Those who are dependent on public assistance or living on the edge of subsistence may give less, but must still give to the extent they are able; however, no person should give so much that he would become a public burden.
The obligation to perform tzedakah can be fulfilled by giving money to the poor, to health care institutions, to synagogues or to educational institutions. It can also be fulfilled by supporting your children beyond the age when you are legally required to, or supporting your parents in their old age. The obligation includes giving to both Jews and gentiles; contrary to popular belief, Jews do not just "take care of our own." Quite the contrary, a study reported in the Jewish Journal indicated that Jewish "mega-donors" (who give more than $10 million a year to charity) found that only 6% of their mega-dollars went to specifically Jewish causes.
Judaism acknowledges that many people who ask for charity have no genuine need. In fact, the Talmud suggests that this is a good thing: if all people who asked for charity were in genuine need, we would be subject to punishment (from G-d) for refusing anyone who asked. The existence of frauds diminishes our liability for failing to give to all who ask, because we have some legitimate basis for doubting the beggar's sincerity. It is permissible to investigate the legitimacy of a charity before donating to it.
We have an obligation to avoid becoming in need of tzedakah. A person should take any work that is available, even if he thinks it is beneath his dignity, to avoid becoming a public charge.
However, if a person is truly in need and has no way to obtain money on his own he should not feel embarrassed to accept tzedakah. No person should feel too proud to take money from others. In fact, it is considered a transgression to refuse tzedakah. One source says that to make yourself suffer by refusing to accept tzedakah is equivalent to shedding your own blood.
Levels of Tzedakah
Certain kinds of tzedakah are considered more meritorious than others. The Talmud describes these different levels of tzedakah, and Rambam organized them into a list. The levels of charity, from the least meritorious to the most meritorious, are:
1. Giving begrudgingly
2. Giving less that you should, but giving it cheerfully.
3. Giving after being asked
4. Giving before being asked
5. Giving when you do not know the recipient's identity, but the recipient knows your identity
6. Giving when you know the recipient's identity, but the recipient doesn't know your identity
7. Giving when neither party knows the other's identity
8. Enabling the recipient to become self-reliant