RENEE MONTAGNE, Host: In New York, a new law took effect this weekend forcing Internet retailers to collect sales tax from customers. Some big Web companies are already challenging the law. NPR's Jim Zarroli reports.</s>JIM ZARROLI: Jim Zarroli, NPR News, New York.
In New York on Sunday, a new law went into effect requiring Internet retailers to collect sales tax from customers. Until now, firms that didn't have a store or other physical assets in the state were not required to collect the tax. Major Web companies, including Amazon and Overstock, are challenging the new law.