In trade, barter (derived from baretor[1]) is a system of exchange where participants in a transaction directly exchange goods or services for other goods or services without using a medium of exchange, such as money.[2] Economists distinguish barter from gift economies in many ways; barter, for example, features immediate reciprocal exchange, not delayed in time. Barter usually takes place on a bilateral basis, but may be multilateral (i.e., mediated through a trade exchange). In most developed countries, barter usually only exists parallel to monetary systems to a very limited extent. Market actors use barter as a replacement for money as the method of exchange in times of monetary crisis, such as when currency becomes unstable (e.g., hyperinflation or a deflationary spiral) or simply unavailable for conducting commerce.
To try a time bank, search online for one in your local area using How time banks are managed varies according to the region, so it is important (and often mandatory) to attend an initial meeting that explains the general rules of your local chapter. Once you do this, you’re ready to start trading away. Your services and contacts are identified through the local time bank website.
You must include in gross income in the year of receipt the fair market value of goods or services received from bartering. Generally, you report this income on Form 1040, Schedule C.pdf, Profit or Loss from Business (Sole Proprietorship), or Form 1040, Schedule C-EZ.pdf, Net Profit from Business (Sole Proprietorship). If you failed to report this income, correct your return by filing a Form 1040X.pdf, Amended U.S. Individual Income Tax Return. Refer to Topic No. 308 and Should I File an Amended Return? for information on filing an amended return.
The Internet provides a new medium for the barter exchange industry.  Pure Internet-based barter companies differ from traditional, organized trade exchanges in that they do not have a physical office. In modern Internet barter exchanges, there is an agreement or process in place to value goods and services exchanged, which is facilitated by the barter exchange for a fee. A barter exchange functions primarily as the organizer of a marketplace where members buy and sell products and services among themselves. 

While some people may balk at an online community for finding babysitters, I know several parents who say it’s actually very difficult to find a sitter they can trust. BabysitterExchange started in 2000 as a babysitting co-op, and it has since expanded to the point that members use it to reserve time when they just have some errands run, need help tutoring their kids, or want a temporary house-sitter.