INDIANAPOLIS (AP) - Sports betting is days away from becoming legal in Indiana and the state's casinos are lining up to start collecting wagers.

Indiana will become the 12th state - and the first in the midst of significant Midwest markets - with sports betting when a new state law takes effect Sunday.

A minimum of 3 casinos - ones near Indianapolis, Chicago and Cincinnati - plan to open on-site sports betting locations that day. Some others prepare similar openings before the NFL season kicks off on Sept. 5.

The Indiana Gaming Commission voted Wednesday to authorize sports wagering policies. Eleven of the 13 state-regulated gambling establishments and all three of its off-track betting parlors have received short-term sports wagering licenses. The casinos are still working to release mobile wagering apps in the state.

WHEN WILL SPORTS BETTING START?

A flurry of sports books are set to open in early September as they gain approval from state regulators.

Caesars Entertainment is Indiana's biggest casino operator and is targeting a Sunday start for sports betting at its Indiana Grand gambling establishment in Shelbyville, near Indianapolis. It plans to provide it at its OTB in downtown Indianapolis on Tuesday and at its Horseshoe Hammond casino simply throughout the state line from Chicago the following day.

Rival Penn National is likewise leaping rapidly with Sunday begins planned for its gambling establishments that likewise tap huge neighboring metro locations: Ameristar East Chicago and Hollywood in Lawrenceburg, which is a brief drive from Cincinnati and its northern Kentucky suburbs.

Plenty of hoopla will accompany the openings. Boyd Gaming states former Chicago Bears star Brian Urlacher will position the first bet at its Blue Chip casino in Michigan City on Sept. 5, while the Lawrenceburg gambling establishment plans an event Sept. 7 with retired Cincinnati sports stars Anthony Munoz of the Bengals and Tony Perez of the Reds.

Several gambling establishments plan to start mobile wagering this fall however haven't set dates. How quickly mobile betting appears will depend largely on the casinos, said Sara Gonso Tait, executive director of the Indiana Gaming Commission.

A WINDFALL FOR INDIANA?

Iowa became the first Midwestern state with legalized sports banking on Aug. 15. But Indiana's proximity to a number of big cities makes sports wagering readily available to more possible bettors.

Sports betting typically offers only slim revenue margins for casinos, though operators say it is a method to assist attract bettors. Indiana's jump on surrounding states comes amid a $482 million - or almost 18% - drop in gambling incomes at its casinos given that 2012 amid competitors from brand-new casinos in Cincinnati and southern Michigan.

An Indiana legislative report projects that the state will collect only about $13 million a year in revenue from its 9.5% tax on the gambling establishments' sports bets profits.

Sports wagering income has actually disappointed expectations in lots of states that quickly legislated it after the U.S. Supreme Court cleared the method with a judgment last year. The tax rates vary extensively among states: Pennsylvania set its rate at 36% - four times that of neighboring New Jersey - and Iowa's is near the bottom, at 6.75%.

Regulators are dealing with sports betting rules in Illinois, which legislated it in June but hasn't set a date for it to begin.

WHAT ARE INDIANA'S RULES?

Gamblers should be 21 or older in order to place a bet. Indiana will enable the casinos to take wagers on dozens of professional, college and international occasions, consisting of football, basketball, baseball, auto racing, hockey, soccer, boxing, golf and Olympic competitors. No betting is permitted on high school or youth sporting events, or e-sports.

Gamblers will have to sign up and prove their age with a casino before being able to use a mobile betting app. Those online apps, nevertheless, should use so that the bets are positioned within the state borders, suggesting any Chicago homeowners would need to cross into Indiana each time they wished to position a bet using their cellphone.