Horse racing is the oldest form of Maryland gambling. Even the most conservative daily fantasy sites accept players from Maryland. This is thought to give the green light to daily fantasy sports sites like DraftKings, FanDuel, Yahoo!, and CBS Sports. The state adopted language in the federal Unlawful Internet Gambling Enforcement Act that exempts fantasy sports. Maryland wanted to legalize fantasy sports by the end of 2015, but was repealed by state legislation in 2016. The main companies that accept this type of pari-mutuel action are TVG, XpressBet, and TwinSpires. Off-track horse racing is permitted on apps and registered websites. There are two forms of legal Maryland online gambling. Types of Maryland Online Gambling Allowed For more information please visit our exclusive Gambling Taxes article. Do you have to pay taxes on your gambling winnings? OnlineUnitedStatesCasinos has gathered everything you need to know about paying taxes straight from a Certified Public Accountant.